1989_Burr Brown_Power_Sources_Handbook_Vol_1 1989 Burr Brown Power Sources Handbook Vol 1
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MODEL INDEX
PWR70 .......................... 29
PWR71 .......................... 31
PWR72 .......................... 33
PWR74 .......................... 35
PWR11XX ..................... 59
PWR13XX ..................... 61
PWR 1546A ................... 63
PWR1726 ...................... 66
PWR1XX ....................... 37
PWR2XX ....................... 39
PWR3XX ...................... .41
PWR4XX ...................... .43
PWR5XX ...................... .45
PWR6XX ...................... .47
PWR7XX ....................... 50
PWR8XX ....................... 53
P'NR 1017 ...................... 55
PWR51OX ..................... 69
PWR53XX Single .......... 72
PWR53XX Dual ............ 74
PWR53XX Triple ........... 76
PWR59XX ..................... 78
PWR62XX ..................... 80
PWS725/726 ................. 82
PWS740 ........................ 87
Individual Product Data Sheets for models not listed here are
available from your local Burr-Brown salesperson or representative. See the listing on the inside back cover.
BURR-BROWN
POWER SOURCES
HANDBOOK
VOLUME 1
BURR-BROWN®
IElElI
-Credits-
Member of the
.!PJ
manufactUfefS association
which assisted in the preparation of the Glossary in this handbook.
LI-358
©1989 Burr-Brown Corporation
Printed in U.S.A.
Burr-Brown Corporation
International Airport Industrial Park
Mailing Address:
PO Box 11400
Tucson, AZ 85734
Tel: (602) 746-1111
FAX: (602) 889-1510
Street Address:
6730 S. Tucson Blvd.
Tucson, AZ 85706
•
Twx: 910-952-1111
Cable: BBRCORP
•
Telex: 66-6491
The infonnation provided herein is believed to be reliable; however, BURRBROWN assumes no responsibility for inaccuracies or omissions. BURRBROWN assumes no responsibility for the use of this infonnation, and all
use of such infonnation shall be entirely at the user's own risk. Prices and
specifications are subject to change without notice. No patent rights or
licenses to any of the circuits or products described herein are implied or
granted to any third party. BURR-BROWN does not authorize or warrant
any BURR-BROWN product for use in life support devices and/or systems.
Contents
INTRODUCTION & SELECTION GUIDES .................. 5
WHERE TO GO FROM HERE:
BURR-BROWN SALES & SERVICE ........................... 9
CUSTOM & MODIFIED PRODUCTS ........................ 11
QUALITY ASSURANCE & RELIABILITy ................... 13
POWER CONVERSION GLOSSARY ........................ 15
APPLICATION NOTES .............................................. 21
PRODUCT DATA SHEETS ....................................... 29
SALES OFFICES ....................................................... 96
INTRODUCTION &
SELECTION GUIDES
Burr-Brown offers a wide selection of power conversion products. Hundreds
of standard and unique DC/DC converters, including DIP sizes, higher
wattage, and wide-input-range units are available. All carry Burr-Brown's
guarantee of high quality and reliability.
The Burr-Brown Power Sources Handbook contains detailed Product Data
Sheets for all of Burr-Brown's power conversion products. In addition, it
includes supplementary data such as extensive Selection Guides, discussion
of the advanced reliability programs available, a Glossary of power conversion terminology, and Application Notes for more effective use of these
products. You'll also find information on how to get modified and custom
products.
On the inside of the front cover is an index of all products in the handbook,
listed in alphanumeric order. The inside back cover contains a directory of
Burr-Brown sales offices and representatives.
ABOUT THE SELECTION GUIDES
Use the following Selection Guides to compare the many products in this
book. Then refer to the Product Data Sheet for full specifications. Models
shown in boldface are new products.
Burr-Brown Power Sources Handbook, Vol. 1
5
Selection Guides
Boldface = NEW
HIGH·ISOLATION DC/DC CONVERTERS
Model
PWR1726
PWR70
PWS726
PWR74
PWR13XX Series
PWR71
PWR72
PWR1XX Series
PWR2XX Series
PWR3XX Series
PWR4XX Series
PWR6XX Series
PWR7XX Series
PWR1017
PWS725
PWS740
Test Voltage
(AC, VPEAK 60Hz, 60s)
Rated Power
(Watts)
8000
5000
4950
4000
3535
3000
3000
3000
3000
3000
3000
3000
3000
3000
2121
2121
Features
1.5
3
450mW
3
3
3
450mW
1.5
2
3
2
5
3
450mW
O.g/Channel
Page
High Isolation
Small Size
High Isolation
Multichannel
DIP Package
Multichannel
Wide Input Range
General Purpose
General Purpose
Multichannel
Small Size
Regulated
Regulated
Multichannel
High Isolation
Distributed Power
66
29
82
35
61
31
33
37
39
41
43
47
50
55
82
87
Boldface =NEW
DIP·PACKAGED DC/DC CONVERTERS
Model
Regulation
Internal
Filtering
No
No
Yes
Yes
No
Yes
PWR11 XX Series
PWR13XX Series
PWR59XX Series
Features
Page
Filtered
High Isolation
Filtered
59
61
78
Boldface =NEW
MULTICHANNEL DCIDC CONVERTERS
Model
PWR1017
PWR71
PWR5XX Series
PWR8XX Series
PWR74
PWR3XX Series
PWR53XX Series
PWS740
6
Number of
Channels
4
4
4
2
2
2
1or2
8
Number of
Outputs Per
Channel
2
2
10r2
3 Total
2
10r2
1or2
2
Rated
Power
(Watts)
3
3
4
5
3
2
15
D.g/Channel
Features
8 Outputs
Small Size
Small Size
5 ±12 or 5 ±15 VOUT
High Isolation
Small Size
Wide Input Range
Distributed Power
Burr·Brown Power Sources Handbook, Vol. 1
Page
55
31
45
53
35
41
72
87
Selection Guides
lOW-NOISE DC/DC CONVERTERS
Model
Boldface
Noise Out (mV~-~l
Typ
Max
Rated Power
(Watts)
Features
=NEW
Page
PWR1546A
0.6
5
Ultra-Low Noise
63
PWR62XX Series
15
5.2
ECl Power
80
PWR59XX Series
20
2
DIP Package
78
PWR6XX Series
30
3
Regulated
47
PWR7XX Series
30
5
Regulated
50
PWR74
40
3
High Isolation
35
1.0
100
PWR1726
50
1.5
High Isolation
66
PWR11XX Series
50
3
DIP Package
59
PWRl XX Series
50
2
General Purpose
37
PWR3XX Series
50
2
Multichannel
41
15
Wide Input Range
72
1.5
General Purpose
39
PWR53XX Series
PWR2XX Series
75
75
PWR70
80
3
High Isolation
29
PWR71
100
3
Multichannel
31
PWR4XX Series
100
3
Small Size
43
PWR1017
100
3
Multichannel
55
Boldface = NEW
WIDE-INPUT-RANGE DC/DC CONVERTERS
Model
PWR53XX Series
Input Range
(VDC)
Rated Power
(Watts)
Features
Page
9-18
15
Single, Dual, & Triple Outputs
18-36
15
Single, Dual, & Triple Outputs
72
36-72
15
Single, Dual, & Triple Outputs
PWR72
5·22
3
Dual Outputs
33
PWS740
7-20
0.9/Channel
Distributed Power
87
Boldface = NEW
REGULATED DC/DC CONVERTERS
Model
Regulation
Line
Load
(%)
(%)
Rated
Power
(Watts)
PWR1546A
±0.02
0.02
5
low Noise
63
PWR6XX Series
±0.02
0.04
2
General Purpose
47
50
Features
Page
PWR7XX Series
±0.02
0.04
5
General Purpose
PWR510X
±0.02
0.04
9
General Purpose
69
PWR62XX Series
±0.04
0.06
5.2
EClPower
80
PWR59XX Series
±0.3
0.4
2
DIP Package
78
PWR53XX Series
±0.2
1.0
15
Wide Input Range
72
Burr-Brown Power Sources Handbook, Vol. 1
7
Selection Guides
Boldface =NEW
UNREGULATED DC/DC CONVERTERS
Rated Power
(Watts)
Package Size
(Inches)
PWR1XX Series
450mW
1.0 x 1.0 x 0.4
General Purpose
37
PWS725
450mW
1.6 x 0.9 x 0.31
High Isolation
82
PWS726
450mW
82
Model
PWR13XX Series
PWR2XX Series
1.5
Features
Page
1.6 x 0.9 x 0.31
High Isolation
24-pln DIP
High Isolation
61
1.0 x 1.0 x 0.4
General Purpose
39
PWR1726
1.5
1.2 x 1.6 x 0.4
High Isolation
66
PWRll XX Series
2
24-pln DIP
Filtered
59
41
PWR3XX Series
2
1.0 x 1.0 x 0.4
Multichannel
PWR70
3
1.0 x 1.0 x 0.4
High Isolation
29
PWR71
3
2.0 x 2.0 x 0.4
Multichannel
31
PWR72
3
1.0 x 1.0 x 0.4
Wide Input Range
33
PWR74
3
1.0x 1.0xO.4
Multichannel
35
PWR4XX Series
3
1.0 x 1.0 x 0.4
General Purpose
43
PWR1017
3
2.0 x 2.0 x 0.4
Multichannel
55
PWR5XX Series
4
1.2 x 1.6 x 0.4
Multichannel
45
PWR8XX Series
5
1.2 x 1.6 x 0.4
Multichannel
53
PWS740
0.9/Channel
Components
Distributed Power
87
DCIDC CONVERTERS BY WATTAGE
Model
Rated Power
(Watts)
Boldface
Package Size
(Inches)
Features
Page
PWR53XX Series
15
2.5 x 3.5 x 0.7
Triple Output
PWR51OX
9
2.0 x 2.0 x 0.4
Regulated
69
PWR62XX Series
5.2
2.0 x 2.0 x 0.4
ECl Power
80
50
72
PWR7XX Series
5
2.0 x 2.0 x 0.4
Regulated
PWRl546A
5
2.0 x 2.0 x 0.4
Ultra-low Noise
63
PWR8XX Series
5
1.2 x 1.6 x 0.4
Multichannel
53
8
Burr-Brown Power Sources Handbook, Vol. 1
=NEW
WHERE TO GO FROM HERE:
BURR-BROWN SALES & SERV~ClE
GETTING TECHNICAL ASSISTANCE
We have a large and competent field sales force, backed up by an experienced
staff of technical applications specialists. They are eager to assist you in
selecting the right product for your application. This free service is available
from our Tucson-based headquarters and all sales offices.
GETTING PRODUCT DATA SHEETS
AND OTHER TECHNICAL LITERATURE
Product Data Sheets (PDSs) and manuals similar to those you see here, but
perhaps containing more recent revisions, are available for most of the
products in this book. To obtain any of these items, contact your local BurrBrown salesperson or representative. See the list on the inside back cover.
HOW TO PLACE AN ORDER
You can place orders via telephone, FAX, mail, TWX, or TELEX with any
authorized Burr-Brown field sales office, sales representative, or our headquarters in Tucson. A complete list of sales offices is on the inside back cover
of this book. When placing an order, please provide complete information,
including model number with all option designations, product description or
name, quantity desired, and ship-to and bill-to addresses. This will help us
serve you most efficiently.
PRICES AND TERMS
Contact your local Burr-Brown sales office for pricing. Prices and specifications are subject to change without notice.
For U.S.A. customers all prices are FOB Tucson, Arizona, U.S.A., in U.S.
dollars. Applicable federal, state, and local taxes are extra. Terms are net 30
days.
Burr-Brown Power Sources Handbook. Vol.l
9
Burr-Brown Sales & Service
QUOTATIONS
Price quotations made by Burr-Brown or its authorized field sales representatives are valid for 30 days. Delivery quotations are subject to reconfirmation at the time of order placement.
RETURNS AND WARRANTY SERVICE
When returning products for any reason, it is necessary to contact Burr-Brown
prior to shipping for authorization and shipping instructions. In the U.S.A.,
contact our Tucson headquarters. In other countries, contact your local BurrBrown sales office or representative. Please ship returned units prepaid and
supply the original purchase order number and date, along with an explanation of the malfunction. Upon receipt of the returned unit, Burr-Brown will
verify the malfunction and will inform you of the warranty status, cost to
repair or replace, credits, and status of replacement units where applicable.
10
Burr-Brown Power Sources Handbook, Vol. 1
CUSTOM & MODIFIED PRODUCTS
At Burr-Brown, we welcome the opportunity to discuss inquiries about
special or custom OEM power conversion requirements. If you're faced
with the need for unique mechanical or electrical characteristics, our
outstanding engineering staff can solve your problem.
MODIFIED PRODUCTS
If one of our standard products is close but won't quite do the job, consider
a modified product. First find the standard product in this catalog that most
closely reflects your requirements. Determine exactly what electrical or
mechanical characteristics your application requires. For example, this
might be a different input or output voltage, a certain pin-out, or special
testing of a specific parameter for guaranteed qualification. Call your nearest
Burr-Brown sales office for further investigation.
CUSTOM PRODUCTS
If a standard product cannot be modified to meet your requirement, the next
alternative is to consider a custom product. We have many types not listed
in this catalog that have been built for one customer.
A custom product can also be designed to meet your special needs. But
having a custom product designed for you may also present some disadvantages, so discussing the feasibility is essential. Let's talk. Prompt assistance
is available by contacting your local Burr-Brown salesperson or representative listed on the inside back cover of this handbook.
Burr-Brown Power Sources Handbook, Vol.}
11
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QUALITY ASSURANCE
& RELIABILITY
All Burr-Brown DC/DC converters are manufactured using stringent inprocess controls and quality inspections. Internal Quality Assurance Programs use the guidelines set forth in MIL-I-45208A, Inspection System
Requirements. Each lot is fully traceable to incoming materials.
Burr-Brown's DC/DC converters are leading the industry in reliability. Our
products have some of the highest predicted MTTFs for DCIDC converters.
The Advanced Reliability Options available enhance reliability to even
higher levels. For example, our industry standard PWR700A (VIN =5VDC,
VOUT =5VDC, Regulated, 5W) has a predicted MITF of 1,371,486 hours
(per MIL-HDBK-217 Rev. E, circuit-stress analysis method, +25°C, ground
benign). Under IG screening that number rises dramatically to 2,338,585
hours. The PWR700A/T has a whopping 3,052,850 hours at +25°C! This is
nearly 350 years!
Our Quality Assurance Department performs all predicted MTTF calculations per MIL-HDBK-217 Rev. E, circuit-stress analysis method. Some
manufacturers only include "critical" components, or use the less realistic
parts-count method. Company policy requires a predicted MTTF of at least
20,000 hours at +85°C for all new DC/DC converter releases. For a nominal
fee, (waived for large orders) we will calculate the predicted MITF of any
Burr-Brown DC/DC converter. Demonstrated MTTF is also available on
selected models.
RELIABILITY
Customers may also choose one of two additional levels of screening to meet
specific requirements. Screening is available on most standard models. The
advanced reliability program is designed to reduce infant mortality, rework,
field failures, and equipment downtime. Screening processes are summarized on the following page.
Burr-Brown Power Sources Handbook, Vol. 1
13
Quality Assurance & Reliability
STANDARD MANUFACTURING PROCESS
I
Incoming Material Inspection
Per MIL-S-19500
I
Component Attachment
I
100% Internal Visual Inspection
I
100% Electrical Test
I
Seal
I
100% Final Electrical Test
I
External Visual
I
QA Lot Acceptance Testing
/G-LEVEL I SCREENING
I
Standard Manufacturing Process
I
Burn-in, MIL-STD-883
Method 1015, 160 hours, TA = +125°C
I
100% Final Electrical Test
I
QA Lot Acceptance Testing
IT-LEVEL II SCREENING
I
Standard Manufacturing Process
I
Stabilization Bake, MIL-STD-883,
Method 1008, 24 hours, TA= +125°C
I
Temperature Cycling, MIL-STD-883,
Method 1015, 160 hours, (-55°C to +125°C)
I
Burn-in, MIL-STD-883,
Method 1015, 160 hours, TA = +125°C
I
100% Final Electrical Test
I
QA Lot Acceptance Testing
14
Burr-Brown Power Sources Handbook, Vol. 1
POWER CONVERSION GLOSSARY
Ambient Temperature-The average temperature of the environment immediately surrounding the
power supply.
Breakdown Voltage-The voltage level causing insulation failure.
Cross-Regulation-In a multiple output power supply, the percent voltage change at one output
caused by the load change on another output.
Crowbar-An over-voltage protection circuit that rapidly places a low resistance shunt across the
power supply output terminals if a predetermined voltage is exceeded.
CSA -Canadian Standards Association. An independent Canadian organization concerned with
testing for public safety.
Current Limiting-An electronic overload protection circuit limiting the maximum output current
to a preset value.
Derating-Practice of applying components or devices at a lower stress level than specified capabilities to reduce the occurrence of stress-related failures.
100-r________________
a:i"
w ~
;:n.
75
I- (}.
50
5'0
25
~
~]l
~'3
I-u.
~
TEMPERATURE
FIGURE 1. Derating Curve.
Dielectric-An insulating material between conductors.
Dielectric Withstand Voltage-The voltage an insulating material will withstand before flashover
or puncture. See also Hi-Pot Test, Isolation.
Burr-Brown Power Sources Handbook, Vol. 1
15
Power Conversion Glossary
Drift-A change in output over a period of time independent of input, environment, or load.
Efficiency-The ratio of the total output power to the total input power, expressed as a percentage,
under specified conditions.
Electromagnetic Interference (EMI)-Any electronic disturbance that interrupts, obstructs, or otherwise impairs the performance of electronic equipment.
EMI-Abbreviation for Electromagnetic Interference.
ESL-Abbreviation for Equivalent Series Inductance.
ESR-Abbreviation for Equivalent Series Resistance.
Equivalent Series Inductance (ESL)-The amount of inductance in series with an ideal capacitor
that exactly duplicates the performance of a real capacitor.
Equivalent Series Resistance (ESR)-The amount of resistance in series with an ideal capacitor
that exactly duplicates the performance of a real capacitor.
Faraday Shield-An electrostatic shield between input and output windings of a transformer. This
can be used to reduce coupling capacitance.
Flyback Converter-A power supply switching circuit that normally uses a single transistor.
During the first half of the switching cycle, the transistor is on and energy is stored in a transformer
primary. During the second half of the switching cycle, this energy is transferred to the transformer
secondary and the load.
V,N
PWM
'""---1 Reference
Isolation ,...
Amplifier
FIGURE 2. The Flyback Converter.
Foldback Current Limiting-A power supply output protection circuit whereby the output current
decreases with increasing overload, reaching a minimum at short circuit. This minimizes internal
power dissipation under overload conditions. Foldback current limiting is normally used with linear
regulators.
Forward Converter-A power supply switching circuit that transfers energy to the transformer
secondary when the switching transistor is on,
16
Burr-Brown Power Sources Handbook, Vol. 1
Power Conversion Glossary
VOUT
PWM
Isolation 1+---1 Reference
Amplifier
FIGURE 3. The Forward Converter (With Output PI Filter).
Ground Loop-A condition causing undesirable voltage levels when two or more circuits share a
common electrical return or ground lines.
Hi-Pot Test (High Potential Test)-A test performed by applying a high voltage for a specified time
to two isolated points in a device to determine adequacy of insulating materials.
Input Line Filter-A low-pass or band-reject filter at the input of apower supply that reduces line
noise fed to the supply.
Input PI Filter-See PI Filter.
Input Voltage Range-The range of input voltage values for which a power supply or device
operates within specified limits.
Isolation Capacitance-The capacitance across the isolation barrier.
Isolation Resistance-The resistance across the isolation barrier.
Filters
&
Control
Circuitry
Rectifiers,
Regulators,
&
Vour
Filters
FIGURE 4. Isolation Resistance And Capacitance.
Burr-Brown Power Sources Handbook. Vol. 1
17
Power Conversion Glossary
Inverter-A device that changes DC power into AC power.
Isolation-The electrical separation between two circuits, or circuit elements.
Isolation Voltage-The maximum AC or DC specified voltage that may be continuously applied
between isolated circuits.
Leakage Current-The AC or DC current flowing from input to output and/or chassis of an isolated
device at a specified voltage.
Line Regulation-The percentage change in output due to the input voltage varying over its
specified limits, at specified load values, with all other factors constant.
Linear Regulation-A regulation technique wherein the control device, such as a transistor, is
placed in series or parallel with the load.
Load Decoupling-The practice of placing filter components at the load to attenuate noise.
Load Regulation-I) Static: The change in output voltage as the load is changed from specified
minimum load to maximum and maximum to minimum, with all other factors held constant.
2) Dynamic: The change in output voltage expressed as a percent for a given step change in load
current. Initial and final current value and the rates of change must be specified.
Logic InhibitlEnable-A referenced or isolated logic signal that turns a power supply output off or
on.
MTBF-Abbreviation for Mean Time Between Failure.
MTTF-Abbreviation for Mean Time To Failure.
Mean Time Between Failure-The average length of time between system failures, exclusive of
infant mortality and rated end-of-life. An established method of calculating MTBF is described in
the most recent edition of MIL-HDBK-217.
Mean Time To Failure-The equivalent of MTBF for non-field-repairable units.
No Load Voltage-Terminal voltage of a supply when no current is flowing in external circuit.
Noise-The aperiodic random component on the power source output that is unrelated to source and
switching frequency. Unless specified otherwise, noise is expressed in peak-to-peak units over a'
specified bandwidth. See Ripple.
Nominal Value-The stated or objective value of a quantity or component, which may not be the
actual value measured.
Operating Temperature Range-The range of ambient, baseplate, or case temperatures through
which a power supply is specified to operate safely.
Output Filter-One or more discreet components used to attenuate output ripple and noise.
Output Ripple and Noise-See Periodic and Random Deviation,
Output Voltage Accuracy-The tolerance in percent of the output voltage.
Overload Protection-A feature that senses and responds to current of power overload conditions.
Over-voltage Crowbar--See Crowbar.
18
Burr-Brown Power Sources Handbook, Vol. 1
Power Conversion Glossary
Over-Voltage Protection (OVP)-A feature that senses and responds to a high voltage condition.
PARD-Abbreviation for Periodic and Random Deviation.
Periodic and Random Deviation (PARD)-The sum of all ripple and noise components measured
over a specified bandwidth and stated, unless otherwise specified, in peak-to-peak values.
PI Filter-A filter consisting of two line-to-line capacitors and a series inductance in a
configuration used to attenuate noise and ripple.
1t
L
:~_____-r-~___
-r-e-______:~
C_,________________C_2__
FIGURE 5. PI Filter.
Post Regulation-Refers to the use of a secondary regulator on a power supply output to improve
line/load regulation and to attenuate ripple and noise.
Preregulation-The initial regulation circuit in a system containing at least two cascade regulation
loops.
PSMA-Abbreviation for Power Sources Manufacturers Association.
Pulse-Width Modulation-A method of regulating the output voltage ofa switching power supply
by veering the duration, but not the frequency, of a train of pulses that drives a power switch.
Push-Pull Converter-A power switching circuit that uses two or more switches driven alternately
on and off.
Rectifiers,
>----1 Regulators,
Com
&
Control
Filters
&
Drive
Circuitry
FIGURE 6. Push-Pull Converter.
PWM-Abbreviation for Pulse-Width-Modulation.
Burr-Brown Power Sources Handbook, Vol. 1
19
Power Conversion Glossary
Rated Output Current-The continuous load current under which specifications of a power supply
are detennined.
Reflected Ripple Current-The AC current generated at the input of a power supply or DC/DC
converter by the switching operation of the converter, stated as peak-to-peak or RMS.
Return-The name for the common tenninal of the output of a power supply, it carries the return
current for the outputs.
Ripple-The periodic component at the power source output harmonically related to source or
switching frequencies. Unless specified otherwise, it is expressed in peak-to-peak units over a
specified bandwidth.
Short-Circuit Protection-A protective feature limiting the output current of a power supply to
prevent damage.
Soft Start-Controlled tum on to reduce in-rush current.
Split Bobbin Winding-The method of winding a transfonner whereby the primary and secondary
are wound side-by-side on a bobbin with an insulation barrier between the two windings.
Stability-The percent change in output parameter as a function of time, with all other factors held
constant, following a specified warm-up period.
Stand-By Current-The input current drawn by a power supply under no load conditions.
Switching Frequency-The rate at which a DC voltage is switched in a converter.
Temperature Coefficient-The average percent change in output voltage per °C change in ambient
temperature over a specified temperature range.
Temperature Range, Specification-The range of temperatures under which the power supply
operates fully within all specifications.
Temperature Range, Operating-The range of temperatures under which it is safe to operate but
one or more parameters might go out of specification.
Temperature Range, Storage-The range of temperatures through which an inoperative power
supply can remain in storage without degrading its subsequent operation.
Transformer-Device that transfers energy from one circuit to another by means of electromagnetic
induction.
Transient Recovery Time-The time required for the output voltage of a power supply to settle
within specified output accuracy limits following a sudden change in line or load.
UL-Abbreviation for Underwriters Laboratories Incorporated.
UPS-Abbreviation for Uninterruptible Power Supply.
VDE-Abbreviation for Verband Deutscher Elektotechniker. A West Gennan organization that tests
equipment for public safety and emitted noise.
Voltage Balance-The difference in magnitude, in percent, between differential tracking output
voltages of a power supply where the voltages have equal nominal values with opposite polarities.
Warm-Up Drift-The change in output voltage of a power source from turn-on until it reaches
thennal eqUilibrium at specified operating conditions.
20
Burr-Brown Power Sources Handbook. Vol. 1
APPLICATION NOTES
TESTING ISOLATION
BARRIER CHARACTERISTICS
The insulation and spacing of most PWR products are tested to meet the
dielectric withstand requirements of UL544, paragraph 31. Check each
product data sheet for details of its isolation properties. A 60Hz essentially
sinusoidal potential is applied between the primary and secondary for a
period of one minute. The potential used for this test is twice the maximum
rated voltage plus lOOOV.
Dielectric withstand testing is intended to be done at the manufacturer's site
only. This test should not be repeated. Exposing the dielectric material of the
isolation barrier to repeated testing causes microscopic carbonizing of the
dielectric, resulting in a weakened barrier. A low resistance path will
eventually be created across the barrier.
PRESERVING ISOLATION CHARACTERISTICS
If intrinsic safety is required, care should be taken in the layout and assembly
of the printed circuit board (PCB) to avoid degrading the isolation barrier of
the DC/DC converter. Precautionary measures include cleaning the PCB
prior to installing the PWR product. Some products come with standoffs
built into the packaging to ease the cleaning procedure after installation. If
not, use non-conductive spacers to keep the DC/DC converter off the PCB.
Clean regularly to insure no contaminates accumulate under the unit. Use an
epoxy solder mask to isolate PCB conductive traces which must run under
or close to the converter. Do not use conductive inks on the PCB under the
unit; e.g. inks used in inspection stamps or component identification
marking.
Burr-Brown Power Sources Handbook. Vol. 1
21
Application Notes
OUTPUT POWER DISTRIBUTION
Figure 1 shows the recommended method of connecting multiple loads to
the converter. Single point distribution prevents ground loops and interaction between parallel load circuits.
DC/DC
Converter
FIGURE 1. Recommended Power Distribution.
LOW NOISE CONSIDERATIONS
Large ground planes are recommended because they serve as low inductance reference points for all components and increase the effectiveness of
the shielding inside the DC/DC converter. The shield is usually attached to
input common. If this is not a "quiet" reference, the shield, with its large
physical area, could become a potential source of noise distortion. See the
following two application notes for more information and application
examples.
22
Burr-Brown Power Sources Handbook, Vol. 1
Application Notes
DC-TO-DC CONVERTER NOISE REDUCTION
The inherent switching inside the DC-to-DC converter
gives rise to potential sources of noise. This noise
manifests itself on the output voltage as spikes at the
switching frequency. Due to size and cost requirements,
internal filtering is limited but usually adequate for most
applications. When excessive noise is suspected, you
must first rule out extraneous noise sources. Figure I
illustrates the recommended method for testing output
voltage ripple and noise.
It is important that the inductor wire size can carry the
load current. including a safety factor. and that the core
does not saturate. Also notice that the DC resistance of
the inductor is outside the fecdback loop for regulated
units and subsequently degrades that regulation.
I.e filters are generally used only where very accurate
analog measurements are being taken. and the power
supply rejection is poor at the ripple frequency. A much
more common filtering technique is the output filter
capacitor.
CHOOSING AN OUTPUT CAPACITOR
The saying "the more the better" is definitely not applicable to output capacitors of switching type power
supplies. The basic design equations of the supply rules
out any brute force approach. The parameter of major
concern is the Effective Series Resistance (ESR). ESR is
due to stray resistance inside the electrolytic capacitor
that becomes significant at switching power supply
frcquencies and higher. Together with Effective Series
Inductance (ESL). ESR can be modeled as the equivalent
circuit shown in Figure 3.
FIGURE 1. Recommended Noise Measurement Method.
ESR
If your circuit requires less noise than the supply is
capable of. there are two preferred filter techniques-LC
filters or an output filter capacitor.
ESL
o---i~
LC FILTERING
For applications requlflng higher accuracy, such as
analog measurements, LC filters should be used on each
channel to attenuate high-frequency noise. Because of
the output filter capacitor already present in the DC-toDC converter, adding an inductor and capacitor to the
output creates a pi filter at half the user-capacitor cost
(Figure 2).
Frequency (Hz)
PWRXXX
L-_~
*Improvement from paralleling several
capacitors with equal total capacitance.
_ _ +VOUT
FIGURE 3. Typical Log/Log Impedance Plot for
Aluminum Electrolytic Capacitor.
Inlernal/
co---t------t---- Common
T'-_ _- _
FIGURE 2. Output "PI" Filters.
-VOUT
ESR is also a function of temperature and actually
decreases as temperature is increased. This temperature
dependency is particularly strong in the below zero range
as shown in Figure 4. This, together with decreasing
capacitance (Figure 5), can prove fatal to a switcher
design that performed well on the bench.
AN-162A
Burr-Brown Power Sources Handbook, Vol. 1
23
Application Notes
20
15
~
o
~
10
\
\
II:
ffl
~
5
""'"
,
1
o
-40
-30
-20
r--.... '"'-
-10
20
10
30
40
Temperature (oG)
FIGURE 4. ESR Ratio Relative to Room
Temperature.
1
~
0.7 5
V
0
:;
II:
"g
I'"
V~
~
I--"'""
...'"
l!! 0.5 0
'u
u
0.2 5
o
-40
-30
-20
-10
10
20
30
40
Temperature (oG)
FIGURE 5. Capacitive Ratio Relative to Room
Temp.erature.
The ESR becomes, in effect, a voltage divider with the
internal output resistance of the supply. Therefore, the
lower the ESR, the better suited the capacitor is for
filtering the output of a switching type power supply. As
the load increases, the capacitors' ripple current increase,
causing a larger drop across the ESR, and consequently,
a larger output ripple voltage (seen as noise). A commonly used method for estimating ESR is by means of
the equation:
ESR = DF X 0.01/27TfC
24
Where D F is given in %, f is given in hertz, and C is given
in farads. Dissipation factor (DF) is a function of
frequency and is useless if given at less than 1kHz. (If
given at lower frequencies it is more indicative of
equivalent parallel resistance). If given at 1kHz or greater,
the above equation applies. Typical values are 8% to 24%
at 1kHz for solid tantalums, and 0.1% to 3% at 1kHz for
ceramics, and 8% at 120Hz for aluminum electrolytics.
Most tantalum and aluminum electrolytic capacitor
manufacturers do not specify the ESR, probably because
it is not worth bragging about. One way of reducing
ESR in design is to put two or more capacitors in
parallel that add to the needed capacitance and reduce
the ESR by the parallel resistance relation (see note in
Figure 3). The second capacitor may be 1/10 or 1/100 the
capacitance of the first, since it will provide bypassing for
higher frequencies.
There are two basic families of electrolytic capacitors
from which to choose: aluminum and tantalum. Aluminum types are available in many quality grades and
fabrication techniques. Tantalum types come in foil,
solid, and wet-slug sUbtypes. At first this may present a
bewildering array of choices, but these can quickly be
reduced by your particular need. Cheap aluminum electrolytics of questionable quality are often used but all ·to
frequently this leads to actual noise generation, with
poor reliability and in general, criticisms of high frequency switching type supplies. Good quality aluminum
electrolytics probably provide the best compromise, if
one must be made, between cost and performance. These
are "computer grade" and other types made especially
for switchers. Some have specialized construction that
produce very low ESR and ESL rather than low cost.
The outstanding feature of all tantalum types is their
high capacitance to volume efficiency. This is particularly
seen in the wet-slug tantalum, an undisputed winner in
the capacitance versus volume contest. Solid tantalums
appeal where there is a great emphasis on longevity, both
shelf life and operating life. The foil-type tantalum is a
very good capacitor for switchers but is not cost competitive with aluminum types. Where switching frequencies
are very high (lMHz and greater) and current demands
are low, nonelectrolytic capacitors will probably replace
the previously discussed electrolytics, providing bypassing
at high frequencies where the ESL of electrolytics
becomes too high.
In addition to considering the capacitance, ESR, ESL,
and appropriate voltage derating for the application,
most capacitors have a maximum rms ripple current (or
max rms ripple voltage) rating which should not be
exceeded. Ripple current can be estimated by i rms =
ip- p /3.5 (or Vrms = Vp- p /3.0). These ratings are too often
ignored, but the stress produced by exceeded ripple will
adversely effect the lifespan of the output filter capacitor.
Burr-Brown Power Sources Handbook, Vol. 1
Application Notes
The effect of ripple current flowing in the output capacitor
is the dissipation of heat in the capacitor's ESR. Heat
kills electrolytics in two ways-electrolytic depletion and
electrolytic evaporation. The rate at which the electrolyte
is lost depends on the elecytrolyte itself and the capacitor's
internal structure. But whatever that rate, tests byaluminum capacitor makers indicate it nearly doubles for
each lDoC rise in temperature. Thus, each lDoC rise
nearly cuts the usable life of an aluminum capacitor in
half. The best approach to counter this problem is to use
capacitors designed and rated for higher temperatures.
Whatever capacitor is selected, its effective use depends
greatly upon wiring techniques. For example, inductance
can become dominant if good wiring practices are not
followed and a low, ESL requirement can be reduced
through very careful wiring. Place the capacitor as close
as possible to the load rather than the power supply. The
reason for this is the presence of inductance in the wire
or PCB trace and the existing output capacitor inside the
supply. A small pi filter is formed furthering the reduction
of noise. Capacitor lead length including circuit wiring
on both sides of the capacitor should be minimized.
Short, wide straps are the best and these can be paralled
for further reduction in self-inductance.
It's true thai good capacitors have played a big role in
making switching type power supplies a technological
and commercial success, but this success has inspired the
capacitor makers to devise even better suited types.
Because of this impetus and the versatility of the switching power supply, it is dificult to say that one type of
capacitor is inherently better than another. Most capacitor manufacturers are willing and able to provide advice
that would help you in your decision.
designing a filter to reduce the ripple and noise of the
PWR623, an LC configuration was chosen to maximize
ripple attenuation. The Siemens bobbin core was selected
for its excellent current rating while the Sprague tantalum
capacitor was selected for its relatively good ESR. The
capacitor is also comparatively compact which lends it
to use on printed circuit boards. In choosing values for
the components, the calculated break (or 3dB) frequency
should be significantly less than the ripple frequency. A
first order analysis will contain several sources of error.
These errors include the effects of loading, internal
resistance, ESR of the inductor, and most importantly the
ESR and ESL of the capacitor. In a first order analysis
of an LC filter, the break frequency can be found by
setting the inductive reactance equal to the capacitive
reactance and solving for frequency (C).
27TfL=_I21TfC
f= -L I I
27T V Ie
For our example the inductor was IOOJ,lH and the
capacitor was IJ,lF. This yielded a break frequency of
15.92kHz (Figure 7), which is an order of magnitude
below the ripple frequency of the PWR6XX series
(approximately 160kHz).
The PWR623 product data sheet shows a typical ripple
of 30mVp-p. Upon bench testing the circuit (Figure 6) at
rated load (±67mA), the noise was reduced to below the
capabilites of the general test equipment being used.
0
~
15,92kHz
EXAMPLE: FILTERING THE PWR623
The circuit in Figure 6, developed for and in use by a
customer, is representative of the necessary considerations
in filtering high frequency switching power supplies. In
iii
-10
'\
:!:!.
"
'"
l!!
'0
\
-20
\'
-40
\
Q.
c:
~
PWR623B
'"
l!!
'0
>
:;
Q.
:;
0
100pH Inductors: Siemens B78108-S1104
1pF Capacitors: Sprague 1500105 X9020A2
-40dB/dec
-30
>
:;
-50
100
1k
FIGURE 6. Filter Circuit for DC/DC Converter.
10k
\
100k
1M
Frequency (Hz)
FIGURE 7. Linear First Order Approximation of
Filter Circuit.
Burr-Brown Power Sources Handbook, Vol. 1
25
Application Notes
MINIMIZING THE EFFECTS OF
DC/DC CONVERTER SWITCHING NOISE
When dealing with high frequencies, the interaction
between devices requires extreme care in setup. Some
devices are more susceptible to high frequency noise.
This unwanted interaction can ruin the performance of
otherwise excellent devices. For our example we will
look at the interaction between a DC-to-DC converter's
high frequency noise and a wide band isolation amplifier. The DC to DC converter is the model PWR74 and
the isolation amplifier is the ISOlOO.
At first, the use of DC/ DC converters may seem trivial.
You simply apply a DC voltage to the input and obtain
one or more isolated DC voltages at the output. In practice though, things are not that simple. The switching
action of the converter's internal circuitry can cause
noise at its input, ripple at its output, and radiated interference into adjacent circuits.
All of these undesirable effects can be minimized by the
techniques given in this application note. This example,
developed for and in use by a customer, typifies the measures that can be taken to optimize practical DC{ DC
converter applications.
The following parts were used:
DC/DC converter ..................•.... PWR74
Isolation amplifier .................•.•... ISOlOO
Ll-LS ..........•..........•.• IOOIlH RF inductor
CI ..............•........•........••...•• IOIlF
C2-CS •••••••••••••.••••••••....•.••••••••• IIlF
C6-C9 ..............•......•.....•.......•.OIIlF
CIO ........•......•.......••...••..•...•.•• 5pF
RI,R2 ...................•............... IMO
R4 ................••.........•.•..•••..•• 2MO
ZI, Z2 ...••..........•....•... Offset voltage span.
R5, R6 ..............•.. Dimensioning as required.
R3/ C 11 .........•....... Low-pass filter at output.
Dimensioning as required.
CIRCUIT
In order to be more universally applicable, this circuit
(see Figure I) was designed for three-port isolation. Thus
the input from the power supply is isolated from both
the input and output sides of the amplifier, which are
isolated from each other.· The circuit is configured with
Rl R2 IMO providing unity gain. Selection of noninverting unipolar or non-inverting bipolar mode is
made through jumpers JI and J2 as shown on the
schematic. Setting jumper J3 provides offset ildjustment
through an auxiliary voltage stabilized with zener diodes.
= =
26
To suppress any tendency toward oscillation, reduce
peaking of frequency response, and limit output noise,
the output stage is slightly compensated with ClO = SpF.
Ceramic bypassing capacitors were used for each supply
voltage for both input and output sides directly at the
IC. (C6 - C9 = .OIIlF). Finally, the output voltage is
available directly at output I or through a low-pass filter
at output 2.
PCB
Ground planes relating to the three isolation voltages are
implemented on the component side of the PC board
(see Figure 2). Each is separated by a space sufficient to
assure high-voltage isolation. These· planes offer lowinductance reference points required by RF applications
and also provide guarding for sensitive signal lines.
Leakage current across the PCB isolation barriers are
minimized by guarding both rows of pins with lowresistance paths to their respective commons. This is
done on the component as well as solder sides of the
board.
NOISE
If the input voltage to the DC/DC converter is not
"clean", its effect on the amplifier will have to be minimized. Using the internal capacitor present in the
PWR74, a pi filter was constructed with LI = lOOIlH and
CI = IOIlF. In addition, the filter suppresses the reflected ripple current of the DC/DC converter caused by the
dynamic current component at its switching frequency
(about 500kHz). This is of major importance if other
circuits are supplied by the input voltage.
Each of the PWR74 output voltage ports contains an
internal filter capacitor. An LC filter (L2 - LS = lOOIlH,
C2 - C5 = 11lF) was used for additional ripple
suppression. The filtering of high frequency noise directly
at its source not only eliminates conducted noise, but
also simplifies circuit layout. The high frequency of the
PWR74 demands low effective series resistance (ESR)
capacitors for the input and output filters (Cl - CS).
For this reason ceramic caps were used.
The PWR74 internal shielding is connected to the -VIN
pin of the converter. This "quiet" ground, with respect to
radio frequencies, is absolutely necessary for efficiency in
shielding radiated noise. RF oscillations on the shield not
only would jeopardize its desired effect, but also would
become a potential source of distortion to other circuitry.
Burr-Brown Power Sources Handbook, Vol.}
Application Notes
OTHER APPLICATION CONSIDERATIONS
I. For long input lines to the ISOIOO, use shielded or
twisted pair cable.
2. The ISOIOO Input Common (pin 18) and -In (pin 17)
should be grounded through separate lines. The Input
Common can carry large DC currents and may cause
feedback to the signal input.
3. Care should be taken to minimize external capacitance
across the isolation barrier.
4. Distance across the isolation barrier between external
components and conductor patterns should be maximized to reduce leakage and arcing.
5. Use of conformally coated printed circuit boards is
recommended.
6. When in the unipolar mode, the reference currents
(pins 8 and 16) must be terminated. IJN should be
greater than 20nA to keep internal LED on.
7. The noise contribution of the reference currents will
cause the bipolar mode to be noisier than the unipolar
mode.
8. The maximum signal output voltage swing is determined by liN and RF.
V MAX SWING - liN MAX X RF
•• •
• • ••
•
••• •
PWR 716
Layout-Component Side
FIGURE 2. PCB Layout Diagram•.
+V..
L.
C.
A Unipolar
B Bipolar
PWR74
-v..
5
4
3
-V. C. +V.
6
7
8
-V. C. +V.
FIGURE 1. Example Circuit Diagram.
Burr-Brown Power Sources Handbook, Vol. 1
27
PWR70
BURR-BROWN®
PWR70
IElElI
ISOLATED DC/DC CONVERTER
Low Cost-Unregulated Outputs
OUTPUT POWER TO 3 WATTS
FEATURES
APPLICATIONS
• TESTED IN COMPLIANCE WITH UL544
• SPOT REGULATOR
• OUTPUT POWER TO 3 WATTS
• POWER FOR DATA ACQUISITION,
OP AMPS, ETC.
• HIGH ISOLATION VOLTAGE 2000VPEAK
• PROCESS CONTROL
• SIX-BIDED SHIELDING
• PORTABLE EQUIPMENT
• INPUT AND OUTPUT FILTERING
• TEST EQUIPMENT
• LOW PROFILE PACKAGE 0.4- HIGH
DESCRIPTION
The PWR70 is a single-channel, dual-output
DCI DC converter designed for general purpose
power conversion applications where high efficiency
is more important than load regulation.
Six-sided shielding suppresses electromagnetic
radiation which could disturb sensitive analog measurements or interfere with system timing signals.
Input filtering minimizes reflected ripple current.
Output ripple voltage and switching transients are
reduced by filtering the PWR 70 outputs.
The PWR 70 provides a plus and minus output voltage approximately equal to the input voltage magnitude. It operates over an input voltage range of
10VDC to l8VDC. Isolation voltage is a minimum
of 2000 VPK.•
The PWR70 is tested in compliance with UL544
dielectric withstand voltage requirements for primary circuits.
SIMPLIFIED CIRCUIT DIAGRAM
I-----------------~ IH-~~;~E;S--
I~
It"''--_+-_---1~._u
.()
I
..1... I ~
I
I
I;i=:
L
+VOUT
IF
I
I
I
-- --.., .()
I, I~
CONTROL CIRCUITRY
H~
IfI~
T
n! 1~{]jRE!ECTWIFiIEi!RSa_-......_+-<-o)
~ ~
OUTPUT
COMMON
-VOUT
L ____________ ..i
Iniernillonil Alrporllndullrlal Plrk· P.O. Box 11400· Tucson. Arizona 85734· Tel. IBD21 746-1111 • Twx: 910-952·1111 • Cable: BBRCORp· Telex: 66·8491
PDS-S3IB
Burr-Brown Power Sources Handbook, Vol. 1
29
PWR70
SPECIFICATIONS
ELECTRICAL
At TA
=
+25°C. +V'N
PARAMETER
INPUT
Rated Voltage
Voltage Range
Input Current
Ripple Current
ISOLATION
Rated Voltage
Resistance
Capacitance
Leakage Current
OUTPUT
Raled Vollage
Voltage Accuracy
Rated Current
Current Range
Line Regulation
Load Regulation
Ripple Vollage
-=
MECHANICAL
15VDC. and lOUT"" ±15mA unless otherwise noted.
CONDITIONS
TYP
MIN
UNITS
MAX
15
lOUT
bUT
lOUT
'OUT
=
0
=;
0
VDC
VDC
mA
mA
mA, pk
mA, pk
18
10
± 3mA
25
±33mA
± 3mA
±33mA
±10
±10
150
60sec, 60Hz, 50DDV pk
2000
VDC
Q
lOG
12
V'sa
pF
240VAC.60Hz
2
"A
±15
±80
VDC
%
mA
mA
VIV
mY/rnA
mY, pk
mY, pk
+85
+125
+150
°C
°C
°C
5
±15
±100
0
1.08
35
±10
10VDC " Y'N ?' 18VDC
':3mA ~ lOUT c:.--' '33mA
'OUT = ±3mA
'OUT = ±33mA
TEMPERATURE
Specification
Operating
Storage
-25
-55
-65
H-l
r-
Pin numbers shown
for reference only.
R
E=:::;_IN
~
)
I
V+':
COM .------'
GT;'~ V-::~G
I
Bottom
I
~ L --l
View
"+" denotes
missing pin.
NOTE: Input and Output circuits have
separate shields.
INCHES
MIN
MAX
1.075
1.175
1.075
1.175
.350
.420
DIM.
"
l
l
OJ
OJ
E
0
E
0
c
c
B
C
D
1
Z
Z
E
E
u.
c
u.
c
:;.s;
~
e
e
o
0
0
.~
~
C
C
l-
I-
:::l
1-
1
:::l
a
+3mALOAD
1\
>
H
K
R
0
>
rmYOT
.042
.200 BASIC
.212
.312
.170
.350
.800 BASIC
.100 BASIC
.112
.212
G
....
1/
.038
MILLIMETERS
MIN
MAX
27.31
29.85
27.31
29.85
8.88
10.67
0.97
1.07
5.08 BASIC
7.92
5.38
8.88
4.32
20.32 BASIC
2.54 BASIC
5.38
2.84
Material: Black Epoxy
Weight: 15 gm. (0.53 oz.)
Grid: 2.5Omm (0.10")
2
-65 -35
Output Currenl (mA)
-5
25
55
85
115 145
Ambient Temperature (OC)
FIGURE I. Load Regulation.
CONNECTION DIAGRAM
BOTTOM VIEW
FIGURE 2. Temperature Drift.
V+
-VIN
ABSOLUTE MAXIMUM RATINGS
Input Voltage ......................................... 18VDC
Output Currenl. .............. , ....................... ±150mA
Output Short·Circuit Duration •.... : ................ Continuous
30
Burr-Brown Power Sources Handbook, Vol. 1
+V1N
COM
IN
V
+IN
+Vou~
OUTPUT
COMMO N
-Vou-<
NOTE: Input and output clrcultJ hln uplrIII IhlaldL Input ahilid II conMCltd
10 -V,•. Output Ihilid II conMCltd II
outpul camllll1.
PWR71
BURR-BROWN®
PWR71
IElElI
ISOLATED DC/DC CONVERTER
Four Isolated Channels - Dual, Unregulated Outputs
3 WATTS RATED OUTPUT POWER
FEATURES
APPLICATIONS
• TESTED IN COMPLIANCE WITH UL544
• SPOT REGULATOR
• OUTPUT POWER TO 3 WATTS
• POWER FOR DATA ACQUISITION.
OP AMPS. ETC.
• HIGH ISOLATION VOLTAGE 1000VPEAK
• PROCESS CONTROL
• SIX-SIDED SHIELDING
• PORTABLE EQUIPMENT
• INPUT AND OUTPUT FILTERING
• TEST EQUIPMENT
• LOW PROFILE PACKAGE 0.4" HIGH
DESCRIPTION
The PWR71 is a four-channel, dual-output, unregulated DC! DC converter designed for general purpose power conversion applications where high
efficiency is more important than load regulation.
A continuous connection between an output and its
common will not damage the PWR 71. Short circuit
protection is accomplished by using power
MOSFETs in the PWR71 input circuitry.
The PWR71 has four isolated plus and minus output voltages approximately equal to the magnitude
of the input voltage. It operates over an input voltage range of IOVDC to 18VDC. Rated output
current for the PWR71 is 25mA per output or a
total of 200mA for all outputs.
Six-sided shielding suppresses electromagnetic
radiation which could disturb sensitive analog measurements or interfere with system timing signals.
Filtering the PWR71 input and outputs minimizes
the effects of electrical noise on the source and loads
of the converter.
Isolation voltage between the input and any of the
four output circuits is IOOOVPK continuous. This
same isolation specification applies between any of
the four dual outputs.
Each PWR7l is tested in compliance with UL544,
VDE750, and CSA C22.2 dielectric withstand specifications. In addition, barrier leakage current is
100% tested.
IlIIImatloDiI AlrporiladUllrllll'lrk - P.O. 10111400 - Tal:lOll. Arizona 85734 - Til 1602) 746-1111 - TWI: 910-952-1111 - MIl: BIRCORP· TIIII: 66-6491
PDS-SS8B
Burr-Brown Power Sources Handbook, Vol. 1
31
PWR71
SPECIFICATIONS
ELECTRICAL
MECHANICAL
At T. = +25'C, +V.. = 15VDC, and lour = ±25mA untess otherwiaa noted
PARAMETER
CONDITIONS
MIN
MAX
NOM
0."0
UNITS
..l.-____---,
('0.") MAX
T'-r-r....-.-------,,----L
INPUT
Rated Voltage
Voltage Renge
Input Current
15
10
18
ISOLATION
Rated Voltage
Resistance
Capacitance
Leakage Current
mA
50
280
ILOAD = 0
I""", = Rated Load
1...,.,,=0
I""", = Rated Load
Ripple Current
80 sec, 80 Hz, 3000 V...
375
30
mA
mA,pk
80
mA, p-p
1000
Cl
10
pF
pA
3
±15
±15
±14.25
3
±25
lOUT = No Load
lOUT = Rated Load
Rated Power
Rated Current
Each output
Total 01 an outputs
Each output
Total olan outputs
10VeC 2: VIN 2: 18VeC
OmA~ ILOAD~
25mA
I""", = 0
I""" = Rated Load
Current Range
Line Regua1ion
Load Regulation
Ripple Voltage
±040
0
0
500
1.08
35
±10
±100
-25
-40
-55
+85
+100
+125
T
_.J
++
(
1
9
10
Al1_ ..
18O±O·381
ft'.!
:j:j: ""3'2
vec
vec
vec
WattS
mA
mA
mA
mA
VN
mVimA
mV,pk
mV,pk
±18
±15.75
200
TEMPERATURE
Specification
Operating
Storage
'---~
, - (50 8O±O 38) ----,
3:. 5
6
7
8
2.000±O.015
2
vec
lOG
V'IO = 24OVAC, 80Hz
OUTPUT
Rated Voltaga
Voltage Range
VDC
vec
Bottom View
io_(-....).
GRID:.O.l00 _ ( 2 . 5 4 _ )
MATERIAL:
_
_
onoIoIiog
"""""
_has Low,
_
_
_
wideapnlira
-... ... ""'' ' ' -proportios-
I1ifIluIioIIty"""""'''.LeooI_islnslwi1h1
1001 _ _ 10 _ _ " _ ' .
ABSOLUTE MAXIMUM RAnNGS
(nput Voltage _ _ _ _ _ _ 18VDC
Output Current
'c
'c
'c
500 mA
Output Short-Circuit
Duration
ContinuollS
TYPICAL PERFORMANCE CURVES
::~
I.
~.
=-~ro11)
~
",
.
",
~
I'
a
1.Oo\D~1""'1
i ,.
/
.
V
3
1 -
' !J~'"
I.
..
I. I - -
~ ..~ ~
//
i
. . . "'v
"'I,
1.Oo\D~1""'1
~
//
"
'IrII'U1VOUIIGI,VOCt
..
..
0,;
WUTCUfIIIIItn'_ ....,-r'lOLTAGI
,
H
. ...:=
. .
-
i
...
TYPICAL APPLICATIONS
,('
I·L
",
~
. .
..
,.
--I.GUI~.".-J
..
,
I. -
,,
I
"~,
~
~.
..
=....J..'-IO
H
I• ...
/
..
B
,HM
IllPUTCUIIIIPT ... LOAO~
~.::
t"IoM,
/
"
""""'VOLTAQI ... LOAD~
LQADCIJIIIIIDIf... ' .... '
0UIPUT·~1JfTIMCTIOtI
32
D
~:'t:c~~
i
,f'
I·
L
I.
V,,'51/OC
f
MI
,•
!
"
CONNECTION DIAGRAM
Burr-Brown Power Sources Handbook, Vol. 1
..
.
,
.. ~ .
,.
I..uTWOI."'GI('IDC1
OUTPUTfOLTAQI ... ..vr VOL,...
... 1 I·
•
~
..~-~
i
"
v:::: V--
is"
\
. \ ,- -
--..
_~I"CJ
PWR72
BURR-BROWN®
PWR72
IElElI
Wide Input Voltage Range-SVnC fto 22VDC
UNREGULATED DC/DC CONVERTER
FEATURES
DESCRIPTOON
•
•
•
•
The PWR72 is a 3W, single-channel. dual-output
DCI DC converter designed for low cost spot power
conversion and ground elimination applications.
It provides a plus and minus output voltage approximately equal to the input voltage magnitude. The
PWR 72 operates over a wide range of input voltages
from 5VDC to 22VDC. Its unregulated outputs give
the PWR72 high efficiency power conversion.
Surface-mounted devices and manufacturing processes are used in the PWR72 to give the user a
device which is more environmentally rugged than
most DCI DC converters. The use of surface-mounted
technologies also gives the PWR72 superior isolation voltage. A third advantage of using surfacemounted technologies is low manufacturing cost.
Low Price
High Power Output: 3W. minimum
Wide Input Voltage Range: 5VOC to 22VOC
Isolation Barrier 100% Tested per UL544. VDE750.
and CSA C22.2 Dielectric Withstand
• Isolallon Barrier Leakage Current 100% Tested at
240VAC: 3pA. maximum
• Low Isolallon Barrier Capacitance: lOpF
• Single-Channel. Dual Output
CONNECTION DIAGRAM
-VIN
ORDERING INFORMATION
o
o
o
G
1
T
PWR 72/0
Device Family _ _ _ _ _ _ _ _ _=r-.....
PWR indicates DC! DC converter
-
+VOUT
ModeINumber-----------~
Common
-VOUT
[Boltom View)
Reliability Screening
No designator indicates standard manufacturing
processing
10 indicates Level I screening-burn-in only
I T indicates Level II screening-stabilization
bake, temperature cycling, and bum-in
TYPICAL APPLICATION
r----t1
~.~
~Oltag.
31----,
Load
I
41---~
Load
2
I
5 1 - - -....
Internatlon.1 Alrporllndustrlal Park· P.O. Box 11400· Tucson. Arizona 85734 • Tel. 1602) 746·1111 . Twx: 911).952·1111 . Cable: BBRCORP • Telex: 66·6491
PDS·SS9
Burr-Brown Power Sources Handbook, Vol. 1
33
PWR72
SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL
At T. = +25'C, +V'N = 15VDC, and lOUT = ±1OOmA unless otherwise noted.
Parameter
Condll/on.
Typ
Min
INPUT
Rated Voltage
Voltage Range
Units
Max
15
Ripple Current
40
280
15
150
I LOAD = Rated Load
ISOLATION
Rated Voltage
Test Voltage
VDC
VDC
mA
mA
mA,pk
mA, pop
22
5
I LOAD := 0
ILOAD = Rated Load
ILOAD= 0
Input Current
330
1000
3000
60sec, 60Hz
VDC
VP.
GO
pF
IlA
10
10
Resistance
Capacitance
Leakage Current
3
V,SO = 240VAC, 60Hz
Input Voltage .............................. 22VDC
Output Short-Circuit Duration. . . . . . . .. Momentary
Internal Power Dissipation. . . . . . . . . . . . . . . . . . .. 3W
Junction Temperature .................... +175°C
Package Thermal Resistance. . . • . •• . • . • • •. 13'CIW
Lead Temperature
(soldering, 10 seconds) .••...••••••••••• +300'C
MECHANICAL
r-
1.125 ±0.015
(28.58 ±O.38)
--l
II!>
OUTPUT
Rated Voltage
Voltage Range
±15
lOUT
= No Load
lOUT
= Rated Load
Rated Power
Rated Current
Line Regulation
Total of all outputs
Each output
Total of all outputs
10VDC 2! V ,N 2! 18VDC
Load Regulation
Ripple Voltage
OmA ~ !LOAD ~ l00mA
I LOAD = 0
Current Range
ILOAO:=
±15
±14.25
3
100
200
0
0
150
VDC
VDC
VDC
W
mA
mA
mA
mA
VN
mVlmA
mV,pk
mV, pk
+85
+100
+125
'C
'C
'C
±20
±15.75
±150
300
1.15
15
30
Rated Load
TEMPERATURE
Specification
-25
-40
-55
Operation
Storage
T
1
1.125 ±0.015
PWR72
(28.58 ±0.38)
(Top View)
~04
104
"2
~04~
"1
OUTPUT VOLTAGE VS LOAD CURRENT
19
~
f
g
25r---r---~--~--,
V'N= 15VDC
Each output
loaded t o _
7~ ~dicate
15
:;
~ 13
o
(Bottom View)
6
~ 20~-+--~-It'7"~+--i
.
value
~
'"
~ 15
0.410 Max
(10.41)
g
'"
1
50
100
150
Load Current (mA)
10
20C
INPUT CURRENT VS LOAD CURRENT
400 r--T"""-~-T'"-"
25
POWER DERATING
10
1\
'i:
~200'--hooI"--I---I----I
All dimensions are in inches (millimeters)
GRID: 0.100 Inches (2.54 millimeters)
MATERIAL: Low thermal resistance molding
\
o
V'N= 15VDC
Each output loaded
to indicate value
0~--5~0--1~0-0--1~50--2-'00
34
20
NOTES:
l300~--+---47L--t---;
Load Current (mA)
15
Input Voltage (VDC)
o
compound which has excellent chemical
resistance, wide operating temperature range
i\
50
100
150
200
Ambient Temperature ('C)
and good electrical properties under high
humidity environments. Lead material Is
brass with a hot-solder--dlpped surface to
allow ease of solderability.
Burr-Brown Power Sources Handbook, Vol, 1
PWR74
BURR-BROWN"
IElElI
PWR74
ISOLATED DC/DC CONVERTER
Two Isolated Channels - Dual, Unregulated Outputs
OUTPUT POWER TO 3 WATTS
FEATURES
APPLICATIONS
• TESTED IN COMPLIANCE WITH UL544
• SPOT REGULATOR
• OUTPUT POWER TO 3 WATTS
• POWER FOR DATA ACQUISITION,
OP AMPS, ETC.
• HIGH ISOLATION VOLTAGE 1500VPEAK
• PROCESS CONTROL
• SIX-SIDED SHIELDING
• PORTABLE EQUIPMENT
• INPUT AND OUTPUT FILTERING
• TEST EQUIPMENT
• LOW PROFILE PACKAGE 0.4" HIGH
DESCRIPTION
Six-sided shielding suppresses electromagnetic
radiation which could disturb sensitive analog measurements or interfere with system timing signals.
Input filtering mir,imizes reflected ripple current.
Output ripple voltage and switching transients are
reduced by filtering the PWR74 outputs.
The PWR74 is a two-channel, dual-output DCI DC
converter designed for general purpose power conversion applications where high efficiency is more
important than load regulation_
The PWR74 provides two isolated plus and minus
output voltages approximately equal to the input
voltage magnitude. It operates over an input voltage range of IOVDC to 20VDC. Isolation voltage is
a minimum of 1500 VPK._
Momentarily connecting an output pin to its output
common will not damage the PWR 74. Short-circuit
protection is accomplished by using power
MOSFETs in the PWR74's input circuitry.
The PWR74 is tested in compliance with UL544
dielectric withstand voltage requirements for primary circuits.
SIMPLIFIED CIRCUIT DIAGRAM
r--------------------------------~
~
t-(:+v....
I
I
I ..() IUTPUT
t--+---+--+I-U_ - ,
I
I
:-n-v....
~
,----,
-
'IiCiiiiiiI'.
-
-tV....
II
i",MPUT
1--.
-tV..
CONTROL
CIRCUITRY
-v.. v
L....
r9.. I~
I
-
I;";
=
r--;-~
I
I
I
____ .JI
'" -v....
InlarnaliDnal Airport Indullrial Park - P.O. Box 11400 - TUCIDn. Arizona B5734 - Tal (602) 746-1111 - Twx: 910-952-1111 - Cabla: BBRCORP - Talax: 66-6491
PDS-S6IA
Burr-Brown Power Sources Handbook, Vol. 1
35
PWR74
SPECIFICATIONS
ELECTRICAL
At T... = +25°C, +VIN = 15VDC, and lOUT = ±25mA unless otherwise noted.
PARAMETER
INPUT
Rated Voltage
Voltage Range
Input Current
MECHANICAL
TYP
MIN
CONDITIONS
MAX
15
10
lOUT = No Load
lOUT =Rated Load
lOUT = No Load
lOUT = Rated Load
Ripple Current
ISOLATION
Rated Voltage C1J
Resistance
Capacitance
Leakage Current
55
155
80
100
60 sec, 60 Hz, 4000 VPK
20
75
175
OUTPUT
Rated Voltage
Voltage Accuracy
Rated Current
Current Range
Une Reguation
Load Regulation
Ripple Voltage
=24OVAC, 80Hz
n
2
±15
-25°CSTAS+85°C
5
-2scC:5TA:5+85°C
±25
±50
0
40
-25
-55
-65
pF
pA
VDC
%
rnA
rnA
VN
1.15
18
20
10VDC '" V," '" 20VDC
±5mA 2:: lOUT 2:: ±25mA
lOUT = ;:::: No Load
lOUT ='" Rated Load
TEMPERATURE
Specification
Operating
Storage
VDC
VDC
rnA
rnA
rnA, p.p
rnA, p.p'
V",
1500
10G
12
V,so
UNITS
100
mV/mA
mY, p.p
mY, p.p
+85
+125
+150
'C
'C
'C
r-B-j
ID
18
-1r-
D
NOTE: 1) Ratings apply input-to-input and are typical channel-to-channel.
eochoulpuiloadodio
rti
DIM.
A
B
C
0
G
H
O,L-__~____,L,____L -_ _- '
LOAD CURRENT (mAl
OUTPUT VOLTAGE .... LOAD CURRENT
INPUT VOL r"'GE (voe,
INPUT CURRENT n. INPUT VOLTAGE
LOAD CURRENT (mAl
INPUT CURRENT .... LOAD CURRENT
K
L
P
R
I
~'5
6
~'Of--+-~
,
~
.
§
,,
I",oh I
OU~TAGE
,
,/
I".
''''I't'~:'
~N~~'~U"~:' ,
,
INCHES
MILLIMETERS
MAX
MIN
1.075
1.175
1.075
1.175
.350
.420
.018
.022
.100 BASIC
.085
.175
.150
.350
.900 BASIC
MIN
MAX
27.31
29.85
27.31
29.85
10.67
8.89
0.56
0.46
2.54 BASIC
2.16
4.45
3.81
8.89
22.86 BASIC
12.7 BASIC
.500 BASIC
.085
.175
2.16
4.45
Material: Black Epoxy
Weight: 15 gm. (0.53 oz.)
Grid: 2.5Omm (0.10")
,
,
I IJ
AMBIENT TEMPEFIAUTRE (OC)
PERFO .... ANCI! n. TE..PE .. ATU ..E
CONNECTION DIAGRAM
BOTTOM VIEW
+VOUT1 •
COMMON, •
ABSOLUTE MAXIMUM RATINGS
-VOUl1 •
-VO UT2
Input Voltage ............•..........•.............•..... 2OVDC
Output Current ....................................... ±1OOmA
Output Short-Circuit Duration ....................... 45 Seconds
36
Burr-Brown Power Sources Handbook, Vol. 1
•
COMMON, •
+VOUT2
•
PWRIXX Series
BURR-BROWN®
PWR1XX Series
IElElI
450mW Rated Output Power
UNREGULATED DC/DC CONVERTER SERIES
FEATURES
• Isolation Voltage Tested per UL544. VDE75D. and
CSAC22.2 Dielectric Withstand Requirement
• Barrier Leakage CurrentlDD% Tested at 240VAC
• Single Channel
• Single or Dual Unregulated Outputs
• Wide Operating Temperature Range: -40·C to
+100·C
• Input and Output Filtering
• Six-Sided Shielding
DESCRIPTION
The PWRIXX Series offers a large selection of
unregulated 450mW DC/DC converters for use in
CONNECTION DIAGRAM
such diverse applications as process control, telecommunications, portable equipment, medical systems, airborne and shipboard electronic circuits,
and automatic test equipment.
Thirty-six models allow the user to select input voltages ranging from +5VDC to +48VDC and output
voltages of +5, +12, +15, ±5, ±12, or ±15V.
Surface-mounted devices and manufacturing processes are used in the PWRIXX Series to give the
user a device which is more environmentally rugged
than most DC/DC converters. The use of surfacemount technologies also gives the PWRIXX Series
superior isolation voltage. Each PWRIXX Series
unit is tested in compliance with the dielectric withstand voltage requirements of UL544, VDE750, and
CSAC22.2.
ORDERING INFORMATION
T
Device Family _ _ _ _ _ _ _ _ _~..JWR l XX IG
PWR indicates DC! DC converter
Model Number
Selected from table of Electrical
Characteristics
Reliability Screening - - - - - - - - - - - '
No designator indicates standard manufacturing
processing
I G indicates Level I screening-burn-in only
I T indicates Level II screening-stabilization
bake, temperature cycling, and burn-in
TYPICAL APPLICATIONS
3t-----.
Load
5t---.....I
L---~!2~_=~~~~5t----.....I
(Slnllle Output Modall)
(Dual Output Modell)
Internallonal Airport Induslri.1 Park· P.O. 80xll400· Tucson. Arizon. 85734· Tel. 16021 745·"" . Twx: 91 ()'952·" " • Cable: B8RCORp· Telex: 66·6491
PDS-628
Burr-Brown Power Sources Handbook, Vol. 1
37
PWRIXX Series
SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS(1)
NomInal
Input' Voltage
(VDC)
Rated
Output 'foliage
(VDC)
PWRloo
PWR10l
PWR102
PWR103
PWR104
PWR105
5
5
12
15
±5
±12
±15
PWR106
PWR107
PWR108
PWR109
PWRll0
PWRlll
12
PWR112
PWR113
PWR114
PWR115
PWR116
PWRI17
15
PWR118
PWR119
PWR120
PWR121
PWR122
PWR123
24
PWR124
PWR125
PWR126
PWRI27
PWR128
PWRI29
28
PWR130
PWR131
PWR132
PWRI33
PWRI34
PWR135
48
Model
M ••lmunt
Input Current
(rnA)
Rated
Output Current
(rnA)
90
180
180
180
180
180
180
38
30
±45
±19
±15
90
5
12
15
±5
±12
±15
38
30
±45
±19
±15
5
12
15
±5
±12
±15
90
38
30
±45
±19
±15
60
60
5
12
15
±5
±12
±15
90
40
40
40
40
40
40
12
15
±5
±12
±15
5
12
15
±5
±12
±15
MECHANICAL
75
75
75
75
75
75
1.125±0.015
(28.58 ±0.38)
80
60
80
80
38
30
±45
±19
±15
5
input Voltage, ••••••.•••••.•. 120% X Rated voltage
Output Short-Circuit Duration •..•.•• Continuous to
output common
Internal Power Dissipation .................... 1W
Junction Temperature •..•••••••..••...•.• +175°C
Package Thermal Reslslance • • • . • . • • . . . • .. 9O"CIW
Lead Temperature
(soldering, 10 seconds) •.••••.••••.•••.. +3OO"C
90
38
30
±45
±19
±15
35
35
35
35
90
20
20
20
20
20
20
30
±45
±19
±15
Parameter
CondHlon.
J...-----...,I
(Top View)
34
~~2
II.OAD = Rated Load
60Hz, 80 seconds
OUTPUT
Vollage Accuracy
Vollage (No Load)
Ripple Voltage
Line Regulation
TEMPERATURE
Specification
Operation
Storage
MIn
Typ
Mu
Unit.
4
Pin 4 Is
missing on
single output
models
1000
3000
10
25
5
I"",. = Rated Load
VOUT = 5 Models
V.", = 12 Models
Vo", = 15 Models
koAO = Rated Load
±5
7
15
18
50
1
-25
-40
-55
~
0.410
--Max
(10.41)
rnA, p-p
30
V,SO = 240VAC
r------....
+85
+100
+125
VDC
V",
Gn
pF
pA
%
VDC
VDC
VDC
mV, p-p
%/%
"C
"C
"C
I- 0.040 ±a.OO3
(1.02 ±a.OS)
NOTES:
All dimensions are in inches (millimeters)
GRID: 0.100 inches (2.54 millimeters)
MATERIAL: Low thermal resistance molding
compound which has excellent chemical
resistance, wide operating temperature range
and good electrical properties under high
humidity environments. Lead material is
brass with a hot-solder-dipped surface to
allow ease of solderability.
NOTE: (1) Specifications typical at T. = +25"C, nominal input voltage, and rated output
current unless otherwise noted.
38
4
5
(Bottom View)
Resistance
Capacitance
Leakage Current
4
~.,
..I
I
±20% of Rated Input
ISOLATION
Rated Voltage
Test Voltage
(28.58 ±a.38)
Marked With/
specific model
number
ordered
COMMON SPECIFICATIONS(1)
INPUT
Voltage Range
Input Ripple Current
1.125 ±0.015
PWR1XX
35
35
38
T
1
Burr-Brown Power Sources Handbook, Vol.}
PWR2XX Series
BURR-BROWN®
PWR2XX Series
IElElI
1.5 Watts Rated Output Power
UNREGULATED DC/DC CONVERTER SERIES
FEATURES
• Isolation Voltage Tested per UL544. VDE750. and
CSAC22.2 Dielectric Withstand Requirement
• Barrier Leakage Current 100% Tested at 240VAC
• Single Channel
• Single or Dual Unregulated Outputs
• Wide Operating Temperature Range: -40°C to
+100°C
• Input and Output Filtering
• Six-Sided Shielding
DESCRIPTION
The PWR2XX Series offers a large selection of
unregulated 1.5W DC! DC converters for use in such
CONNECTION DIAGRAM
diverse applications as process control, telecommunications, portable equipment, medical systems, airborne and shipboard electronic circuits, and automatic test equipment.
Thirty-six models allow the user to select input voltages ranging from +5VDC to +48VDC and output
voltages of +5, +12, +15, ±5, ±12, or ±15VDC.
Surface-mounted devices and manufacturing processes are used in the PWR2XX Series to give the
user a device which is more environmentally rugged
than most DC/DC converters. The use of surfacemount technologies also gives the PWR2XX Series
superior isolation voltage. Each PWR2XX Series
unit is tested in compliance with the dielectric withstand voltage requirements of UL544, VDE750, and
CSAC22.2.
ORDERING INFORMATION
T
PWR2XX/G
Device Family
::rPWR indicates DCI DC converter
Model Number-----------..J
Selected from table of Electrical
Characteristics
Reliability Screening - - - - - - - - - - - '
No designator indicates standard manufacturing
processing
I G indicates Level I screening-bum-in only
I T indicates Level II screening-stabilization
bake, temperature cycling, and burn-in
TYPICAL APPLICATIONS
31---....,
3~--....,
Load
~--_.[2~
4t----1
______~5~---..J
(Dual Output Modell)
(Single Output Modell)
International Airport Industrial Park· P.O. Box 11400 • Tucson. Arizona 85734 . Tal. 1602) 746·1111 • Twx: 910·952·1111 • Cable: 8BRCORP . Telax: 66·6491
PDS-S65
Burr-Brown Power Sources Handbook. Vol.}
39
PWR2XX Series
SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICSf1l
Nominal
Input Yoltage
(YDC)
R_
Output Yoltage
(YDC)
Reted
Output Current
(mA)
Maximum
Input Current
(mA)
PWR200
PWR201
PWR202
PWR203
PWR204
PWR205
5
5
12
15
±5
±12
±15
300
545
545
545
545
PWR206
PWR207
PWR208
PWR209
PWR210
PWR211'
12
PWR212
PWR213
PWR214
PWR215
PWR216
PWR217
15
PWR218
PWR219
PWR220
PWR221
PWR222
PWR223
24
PWR224
PWR225
PWR226
PWR227
PWR228
PWR229
28
PWR230
PWR231
PWR232
PWR233
PWR234
PWR235
48
Model
125
100
±150
±63
±50
545
±63
±50
300
125
100
±150
±63
5
12
15
±5
±12
±15
300
±63
±50
300
1.125 ±0.015
(28.58 ±0.38)
T
I
Marked with
specific model
number
±SO
300
ordered
(Top View)
92
~04~
92
92
f04
Pln41s
missing on
~04
single output
models
H"~
63
63
63
63
63
63
125
100
±150
±63
±50
(28.58 ±0.38\
~
92
92
92
125
100
±150
±63
1
1.125 ±0.015
PWR2XX
104
104
104
104
104
104
125
100
±150
5
12
15
±5
±12
±15
L
1- .
167
167
167
167
167
167
±SO
5
12
15
±5
±12
±15
MECHANICAL
206
206
206
206
206
208
125
100
±150
5
12
15
±5
±12
±15
Junction Temperature ••.••••.••••.••.•••• +175"C
Package Thermal Reaistance . . • • • . • • • . • • •• 6O"C/W
Lead Temperature
(sotderlng, 10 seconds) ••.•.•..•••••••.• +3OO·C
545
300
5
12
15
±5
±12
±15
Input Voltage. • . • • • • • . • • • • • •• 120% X rated voltage
Output Short-Circuit Duration . ...... Continuous to
output common
Internal Power Dissipation •...•....••......... 2W
-04
1
(Bottom View)
COMMON SPECIFICATIONSf1l
Per.meter
Condilion.
.1
INPUT
Voltage Range
Input Ripple Current
ILOAD = Rated Load
ISOLATION
Rated Voltage
Test Voltage
60Hz, 60 seconds
OUTPUT
Voltage Accuracy
Voltage (No Load)
10
25
Ripple Voltage
V"o=24OVAC
ILOAO =
VOUT =
VOUT =
Vo"" =
ILOAD =
Rated Load
5V Models
12V Models
15V Models
Rated Load
-40
Storage
-55
NOTE:
-25
mA, p-p
pA
±5
7
15
18
%
VDC
VDC
VDC
mY, p-p
TEMPERATURE
Specification
Operation
0.410 Max
(10.41)
5
75
1
Line Regulation
,.--------,---,-
VDC
V...
GO
pF
tooo
3000
Capacitance
Unlta
.1.
±20'11. of Rated Input
50
Resistance
Leakage Current
Mu
TrP
Min
+85
+100
+125
·C
"C
"C
NOTES:
All dimensions are In Inches (millimeters)
GRID: 0.100 Inches (2.54 millimeters)
MATERIAL: Low thermal resistance molding
compound which has excellent chemical
resistance, wide operating temperature range
and good electrical properties under high
humidity environments. Lead material Is
brass with a hot-solder-dlpped surface to
allow ease of solderability.
(1) Specifications typical alT. = +25·C, nomlnallnputvoltage, and rated output
current unless otherwise noted.
40
Burr-Brown Power Sources Handbook, Vol. 1
PWR3XX Series
BURR-BROWN®
PWR3XX Series
113131
Dual-Channel, 2 Watts Rated Output Power
UNREGULATED DC/DC CONVERTER SERIES
FEATURES
• Isolation Voltage Tested per UL544, VDE750, and
CSAC22.2 DIelectric Withstand Requirement
• Barrier Leakage Current 100% Tested at 240VAC
• Single Channel
• Single or Dual Unregulated Outputs
• Wide Operating Temperature Range: -40°C to
+100°C
• Input and Output Filtering
• Slx·Slded ShIelding
DIESCRIPTION
The PWR3XX Series offers a large selection of
unregulated 2W DC/DC converters for use in such
diverse applications as process control, telecommunications, portable equipment, medical systems, airborne and shipboard electronic circuits, and automatic test equipment.
Thirty-six models allow the user to select input voltages
ranging from +5VDC to +48VDC and output voltages of +5, +12, +15, ±5, ±12, or ±15VDC.
Surface-mounted devices and manufacturing processes are used in the PWR3XX Series to give the
user a device which is more environmentally rugged
than most DC/DC converters. The use of surfacemount technologies also gives the PWR3XX Series
superior isolation voltage. Each PWR3XX Series
unit is tested in compliance with the dielectric withstand voltage requirements of UL544, VDE750, and
CSAC22.2.
TYPICAL APPLICATIONS
CONNECTION D,IAGRAM
ORDERING INFORMATION
T
(Dual-Channel, Dua' Output)
PWR3XX/G
Device Family
=---rPWR indicates DC! DC converter
Model Number-----------.J
Selected from table of Electrical
Characteristics _ _ _ _ _ _ _ _ _ _..l
Reliability Screening
No designator indicates standard manufacturing
processing
/ G indicates Level I screening-burn-in only
/ T indicates Level II screening-stabilization
bake, temperature cycling, and burn-in
(Single-Channel, High-Current
Dual Outpul)
Internalional Airport Industrial Park· P.O. Box 11400· Tucson. Arizona 85734· Tel./6021745·11 II • Twx: 91 ()'952·11 II . Cable: BBRCORp· Telex: 66·6491
P08-S66A
Burr-Brown Power Sources Handbook, Vol. 1
41
PWR3XX Series
SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS IIl
Nominal
InputVolt"lle
(VDC)
Rated
Output VolIIIge
(YDC)
Rated
Output Current
(rnA)
Mulmum
Input Current
(rnA)
PWR300
PWR301
PWR302
PWR303
PWR304
PWR305
5
5
12
IS
±5
±12
±15
200
690
690
690
PWR306
PWR307
PWR308
PWR309
PWR310
PWR311
12
PWR312
PWR313
PWR314
PWR315
PWR316
PWR317
IS
PWR318
PWR319
PWR320
PWR321
PWR322
PWR323
24
PWR324
PWR325
PWR326
PWR327
PWR328
PWR329
28
PWR330
PWR331
PWR332
PWR333
PWR334
PWR335
48
Model
84
67
±100
±42
±34
690
690
690
200
5
12
IS
±5
±12
±15
67
±100
±42
±34
200
5
12
IS
±5
±12
±15
205
205
205
67
±100
±42
±34
67
±100
±42
±34
200
84
5
12
IS
±5
±12
±15
1.125 ±0.015
115
liS
115
liS
liS
liS
200
84
70
70
70
70
70
70
67
±100
±42
±34
Condition.
INPUT
Voltage Range
Input Ripple Curr!>nt
ILOAD::;;
ISOLATION
Rated Voltage
Test Voltage
60Hz, 60 seconds
Rated Load
Min
OUTPUT
Voltage Accurecy
Voltage (No Load)
Ripple Voltage
Line Regulation
1000
3000
10
25
VISO= 240VAC
10
1""0 = Rated Load
Vo", = 5V Models
Vo", = 12V Models
Vo", = 15V ModelS
ILOAO = Rated Load
±5
7
15
18
TEMPERATURE
Specification
Operation
Storage
NOTE:
Max
±20%I 01 Rated Iinput
30
Resistance
Capacitance
Leakage Current
Typ
50
I
-25
-40
number ordered.
L...-----I
-55
314'~'
6'7'8-
li~~f~i~~
~.
are missing
Plns4and
7
Ion
single-output
I models.
1-
(Bottom View)
,
0.410 Max
(10.41)
t
rnA, p-p
VDC
VPEN<
GCl
pF
/JA
%
VDC
VDC
VDC
mV, p-p
'C
'C
'C
J L 0.020 ±0.002
I I (0.51 ±D.05)
Lo.HO
Min
(4.32)
NOTES:
All dimensions are in Inches (millimeters)
GRID: 0.100 Inches (2.54 millimeters)
MATERIAL: Low thermal reslstsnce molding
compound which has excellent chemical
resistance, wide operating temperature range
and good electrical propertlea under high
humidity environmenls. Lead material Is
brass with a hot-solder-dlpped surface 10
allow ease of solderability.
(I) Specifications typical alT. = +25'C, nominal inputvoltage, and rated output
current unless otherwise noted.
42
~
(Top View)
Units
%/'Ib
+85
+100
+125
(28.58 ±O.38)
Marked With'
speciiici,!,odel
COMMON SPECIFICATIONSIIl
Parameter
.-I
l
PWR3XX
130
130
130
130
130
130
84
1.125 ±O.015
(28.58 ±0.38)
r~_T
205
200
5
12
IS
±5
±12
±15
L
I
205
205
84
67
±100
±42
±34
5
12
IS
±5
±12
±15
MECHANICAL
265
265
265
265
265
265
84
Input Voltage................ 120% X rated voltage
Output Short-Circuit Duration ••.••.. Continuous to
Output Common
Internal Power Dissipation .................... 2W
Junction Temperature .................... +175'C
Package Thermal Resistance. . • • • • • • • . • • .. 9O'CIW
Lead Temperature
(soldering, 10 seconds) ..••••••••.•.••.. +300'C.
Burr-Brown Power Sources Handbook, Vol. 1
PWR4XX Series
BURR-BROWN®
PWR4XX Series
1E3E31
3 Watts Rated Output Power
UNREGULATED DC/DC CONVERTER SERIES
FEATURES
• Isolation Voltage Tested per UL544. VDE750. and
CSAC22.2 Dielectric Withstand Requirement
• Barrier Leakage Current 100% Tested at 24DVAC
• Single Channel
• Single or Dual Unregulated Outputs
• Wide Operating Temperature Range: -40°C to
+100°C
• Input and Output Filtering
• Six-Sided Shielding
DESCRIPTION
The PWR4XX Series offers a large selection of
unregulated 3W DC/DC converters for use in such
diverse applications as process control, telecommunications, portable equipment, medical systems, airborne and shipboard electronic circuits, and automatic test equipment.
Thirty-six models allow the user to select input voltages ranging from +5VDC to +48VDC and output
voltages of +5, +12, +15, ±5, ±12, or ±15V.
Surface-mounted devices and manufacturing processes are used in the PWR4XX Series to give the
user a device which is more environmentally rugged
than most DC/DC converters. The use of surfacemount technologies also gives the PWR4XX Series
superior isolation voltage. Each PWR4XX Series
unit is tested in compliance with the dielectric withstand voltage requirements of UL544, VDC750, and
CSAC22.2.
ORDERING INFORMATION
CONNECTION DIAGRAM
T
PWR4XX /G
Device Family
--=rPWR indicates DC/DC converter
Model Number-----------~
Selected from t!lble of Electrical
Characteristics
Reliability Screening-----------'
No designator indicates standard manufacturing
processing
/ G indicates Level I screening-bum-in only
/T indicates Level II screening-stabilization
bake, temperature cycling, and burn-in
TYPICAL APPLICATIONS
3t---...,
3J----,
Load
4t----+
L----f2
~---t2~~~~5r---~
(Single Oulpul Modelo)
5J---..J
.(Dual Output Modell)
Inlernatlonal AIrport Induslrlal Park - P.O. Box 11400 - Tucson. Arizona 85734 - TIl. (6021 746-1111 - Twx: 910-952·1111 - Cable: BBRCORP - Telax: 66-6491
PDS-S67
Burr-Brown Power Sources Handbook, Vol. 1
43
PWR4XX Series
SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS"!
NomlJIIII
Input VollllIe
(VDC)
R_
Outpul Voltage
(VDC)
Raled
Output Currenl
(mA)
Maximum
InpulCumtnl
(mA)
PWR400
PWR401
PWR402
PWR403
PWR404
PWR405
5
5
12
15
±5
±12
±15
600
250
200
±300
±125
±100
1034
1034
1034
1034
1034
1034
PWR406
PWR407
PWR408
PWR409
PWR410
PWR411
12
5
12
15
±5
±12
±15
600
250
200
±300
±125
±100
380
380
380
380
380
380
PWR412
PWR413
PWR414
PWR415
PWR416
PWR417
15
5
12
15
±5
±12
±15
600
250
200
±300
±125
±100
286
286
286
286
286
286
PWR418
PWR419
PWR420
PWR421
PWR422
PWR423
24
5
12
15
±5
±12
±15
600
250
200
±300
±125
±100
184
184
184
184
184
184
PWR424
PWR425
PWR426
PWR427
PWR428
PWR429
28
5
12
15
±5
±12
±15
600
250
200
±300
±125
±loo
162
162
162
162
162
162
PWR430
PWR431
PWR432
PWR433
PWR434
PWR435
48
5
12
15
±5
±12
±15
600
105
105
105
105
105
105
Model
250
200
±300
±125
±loo
Input Voltage. • •• . • • • • • • • • • .. 120% X rated voltage
Output Short-Circuit Duration. •• • •• ••• Momenlary
Internal Power Disslpetlon •..•••••.••.••••.•• 2.5W
Junction Temperalure .................... +125'C
Package Thermal Resistance. • • • • . • • • • • • •• 16'CIW
Lead Temperature
(soldering, 10 seconds) .•••••••••••••••• +3OO'C
MECHANICAL
L
'aremeter
ISOLATION
Rated Voltage
Test Voltage
Resistance
Capacitance
Leakage Current
OUTPUT
Voltage Accuracy
Vollage (No Load)
Ripple Voltage
Line Regulation
TEMPERATURE
Specification
Operation
Storage
Condition.
Min
Typ
Ma.
BURR-BROWNe
IElElI
60Hz, 80 seconds
1000
3000
VDC
VPEAK
10
50
Visa; 240VAC
10
ILOAD = Rated Load
Vou, ; 5V Models
VOUT ; 12V Models
Vou, ; 15V Models
ILOAD; Raled Load
±5
7
15
18
100
1
GO
pF
pA
%
VDC
VDC
VDC
mV, p-p
'IbI%
~~~
..
4
~.
~
fO-
~1
Pin 41s
missing on
single output
models
(Bottom View)
----r-
0.410 Max
(10.41)
•
r-I-
(Side View)
1~ln
I ~~MII
0.040±O.003
(1.02 ±O.OS)
NOTES:
All dimensions are In Inches (millimeters)
GRID: 0.100 Inches (2.54 millimeters)
MATERIAL: Low thermal resistanca molding
compound which has excallent chemical
resistance, wide operating temperature range
-25
-40
-55
.+85
+100
+125
'C
'C
'C
and good electrical properties under high
humidity environments. Lead material Is
bras. with a hOI-solder-dipped surface 10
allow ease of solderability.
NOTE: (1) Specifications typical at T.; +25'C, nominal Input voltage, and rated outpul
current unless otherwise noted.
44
(28.58 ±0.38)
Marked With,l
specific model
number
ordered
~
(Top View)
Unlta
mA, p-p.
70
T
1
1.125±0.015
PWR4XX
±20'1010f Raled'inpul
ILOAD; Rated Load
1
(28.58 ±0.38)
COMMON SPECIFICATIONS I1J
INPUT
Voltage Range
Input Ripple Current
---J
1.125±O.015
1-
Burr-Brown Power Sources Handbook, Vol. 1
PWR5XX Series
BURR-BROWN®
PWR5XX Series
113E11
4W Rated Output Power
UNREGULATED DC/DC CONVERTER SERIES
FEATURES
diverse applications as process control, telecommunications, portable equipment, medical systems, airborne and shipboard electronic circuits, and automatic test equipment.
Thirty-six models allow the user to select input voltages ranging from +5VDC to +48VDC and output
voltages of +5, +12, +15, ±5, ±12, or ±15V.
• Isolation Voltage Tested per UL544, VDE75D, and
CSAC22.2 Dielectric Withstand Requirement
• Barrier Leakage Current 100% Tested at 240VAC
• Quad Channel
• Single or Dual Unregulated Outputs
• Wide Operating Temperature Range:
-40°C to +100°C
• Input and Output Filtering
• Six·Sided Shielding
Surface-mounted devices and manufacturing processes are used in the PWR5XX Series to give the
user a device which is more environmentally rugged
than most DCI DC converters. The use of surfacemount technologies also gives the PWR5XX Series
superior isolation Voltage.
DESCRIPTION
The PWR5XX Series offers a large selection of
unregulated four-watt DC! DC converters for use in
CONNECTION DIAGRAM
ORDERING INFORMATION
S..
Device Family _ _ _ _ _ _ _ _ _ WRT5XX fG
PWR indicates DCI DC converter
Model Number
Selected from table of Electrical
Characteristics
Reliability Screening - - - - - - - - - - - '
No designator indicates standard manufacturing
processing
f G indicates Level I screening-bum-in only
f T indicates Level II screening-stabilization
bake. temperature cycling, and burn-in
Inlernational Airporllnduslrial Park· P.O. Box 11400· Tucson. Arizona 85734 . Tel. 16021 746·1111 . Twx: 910·952·1111 . Cable: BBRCORP . Telex: 66·6491
PDS·674B
Burr-Brown Power Sources Handbook, Vol. 1
45
PWRSXX Series
SPECIFICATIONS
ELECTRICAL CHARACTERISTICS(1J
ABSOLUTE MAXIMUM RATINGS
NomInal
Input Voltage
(VOC)
Rat...'" .
Oulpul Vollage
(VDC)
R8Ied121
oulpul Currenl
(mA)
Mulmum
Input Currenl
(mA)
PWRSOO
PWR501
PWR502
PWR503
PWR504
PWR505
5
5
12
15
±5
±12
±15
200
67
±100
±42
±34
1300
1290
1230
1300
1290
1230
PWR506
PWR507
PWR508
PWR509
PWR510
PWR511
12
200
490
PWR512
PWR513
PWR514
PWR515
PWR516
PWR517
15
PWR518
PWR519
PWR520
PWR521
PWR522
PWR523
24
PWR524
PWR525
PWR528
PWR527
PWR528
PWR529
28
PWR530
PWR531
PWR532
PWR533
PWR534
PWR535
48
Model
84
5
12
15
84
±12
±15
84
200
67
±100
±42
±34
200
67
±loo
±42
±34
±5
±12
±15
5
12
15
±5
±12
±15
IElElI
PWR5XX
f
200
67
±loo
±42
±34
(Top View)
5
4
3
Parameter
Condlllons
iLOAD
= Rated Load
MIn
Typ
Max
±20J of Rate) Input
70
V,so = 240VAC
15
OUTPUT
Voltage'Accuracy
Voltage (No Load)
VOUT ;;:::
Rated Load
5 Models
VOUT = 12 Models
VOUT = 15 Models
ILOAD = Rated Load
±5
7
15
18
750
1
ILoAD:::::
9
1
+85
+100
+125
10
11
(Bottom View)
t
0.410 Max
(10,41)
mA,p-p
GO
1
-25
-40
-55
Unll.
VDC
10
55
Line Regulation
TEMPERATURE
Specification
Operation
Storage
Pins 4, 7, 10,
and 13 are
missing on
single oUlput
models
14
13
12
ISOLATION
Rated Voltage
Resistance
Capacitance
Leakage Current
Ripple Voltage
6
7
8
2
COMMON SPECIFICATIONS(1)
INPUT
Voltage Range
Input Ripple Current
pF
/lA
%
VDC
VDC
VDC
%of
VOUT, p-p
%/%
·C
·C
·C
W (Side View)
.-I L
-11-
•
0.020 ±O.OO2
(0.51 ±O.OS)
U
t·
~
Min=-J
(4.32)
NOTES:
All dImensions are In inches (millimeters)
GRID: 0.100 Inches (2.54 millimeters)
MATERIAL: Low thermal raslstance molding
compound which has excellenl chemical
resistance, wide oparatlng temparalure range
and good electrical propartles under high
humIdity environments. Lead material Is
brass wllh a hot-solder-dlppad surlace 10
allow ease of solderability.
NOTE:' (1) Specifications typical at T. = +25·C, nominal input voltage, and rated output
'Current unless otherwise noted. (2) Specifications apply to each output.
46
~
L-_n_u~m=b_er~0~·r_d8~re~d_.__~
123
111
111
123
111
111
84
1.625 ±0.015
(41.28 ±O.38)
Marked with
specific model
210
190
190
210
190
190
84
---,--
BU.... -.RONNe
245
222
222
245
222
222
84
5
12
15
..J
-l
1.125±0,015
(28.58 ±0.38)
444
390
355
355
390
355
355
87
±100
±42
±34
5
12
15
±5
±12
±15
L
I
490
444
200
5
12
15
±5
±12
±15
MECHANICAL
444
444
67
±100
±42
±34
±5
Input Voltage.".""".",., 120% X Rated voltage
Outpul Short-Circuit Duration, • , , • , ,.. Momentary
Internal Power DIssipation " " , ••• " •• , •• ,.,' 2.5W
Junclion Temperature , .•• , .. , •.. , •• ".,., +150·C
Package Thermal Resistance. • • • • • • • • • • • •• 38°CIW
Lead Temperatura
(soldering, 10 seconds) ., •.. " . , " " " " +300·C
Burr-Brown Power Sources Handbook. Vol. 1
PWR6XX Series
BURR-BROWN®
PWR6XX Series
IElElI
2W Rated Output Power
REGULATED DC/DC CONVERTER SERIES
FEATURES
• Isolation Voltage Tested per Ul544. VDE75D. and
CSAC22.2 Dielectric Withstand Requirement
o Barrier leakage Current 100% Tested at 240VAC
• Single Channel
• Single or Dual Regulated Outputs
• linear Output Regulation
o Wide Operating Temperature Range:
-40°C to +95°C
• Input and Output Filtering
G Six-Sided Shielding
DESCRIPTION
The PWR6XX Series offers a large selection of regulated two-watt DC/ DC converters for use in such
diverse applications as process control, telecommunications, portable equipment, medical systems, airborne and shipboard electronic circuits, and automatic test equipment.
Thirty-six models allow the user to select input voltages ranging from +5VDC to +48VDC and output
voltages of +5, +12, +15, ±5, ±12, or ±15V.
Surface-mounted devices and manufacturing processes are used in the PWR6XX Series to give the
user a device which is more environmentally rugged
than most DC/DC converters. The use of surfacemount technologies also gives the PWR6XX Series
superior isolation voltage. Each PWR6XX Series
unit is tested in compliance with the dielectric
withstand voltage requirements of UL544, VDE750,
and CSAC22.2.
ORDERING INFORMATION
T
Device FamiIY _ _ _ _ _ _ _ _
!7---'WR 6XX IG
PWR indicates DCI DC converter
Model Number
Selected from table of Electrical
Characteristics
Reliability Screening _ _ _ _ _ _ _ _.....J
No designator indicates standard manufacturing
processing
IG indicates Levell screening-bum-in only
IT indicates Level II screening-stabiJization
bake. temperature cycling, and burn-in
TYPICAL APPLICATIONS
~
1
3
I
II I
L08d
Inpul
Voltage
2
5
(Slngl' Outpul Modell)
~
1
3
I
Lo,d
I
I
L....
I
4
Input
Voigge
2
5
(Dual Output Modell)
Internallonal Alrporllndusirlal Park· P.O. Box 11400· Tucson. Arizona 85734 . Tel. (602) 746·1111 • Twx: 9111-952·1111 • Cable: BBRCORP· Telax: 66·6491
PDS-673A
Burr-Brown Power Sources Handbook, Vol. 1
47
PWR6XX Series
SPECIFICATIONS
ELECTRICAL SPECIFICATIONS!11
Nominal
Input Voltage
Rated
Output Voltage
Model
(VOC)
(VOC)
Rated
Output Current
(mA)
PWR600
PWR601
PWR602
PWR603
PWR604
PWR605
5
5
12
15
±5
±12
±15
400
167
134
±200
±84
±67
PWR606
PWR607
PWR608
PWR609
PWR61 0
PWR611
12
5
12
15
±5
±12
±15
PWR612
PWR613
PWR614
PWR615
PWR616
PWR617
15
PWR61B
PWR619
PWR620
PWR621
PWR622
PWR623
tnput Current
Regulellon
No Load,
IJp (mA)
Rated Load,
IJp (mA)
ReDacted
Ripple Current,
IJp (mA)
Line,
IJp ('110)
Load,
IJp ('110)
Efllcl8llC)',
min ('110)
45
45
45
645
597
580
645
600
580
25
25
25
25
25
25
0.02
0.02
0.02
0.02
0.02
0.02
0.04
0.04
0.04
0.04
0.04
0.04
59
63
64
80
63
64
400
167
134
±2oo
±64
±67
22
22
22
22
22
22
268
246
241
269
249
243
20
20
20
20
20
20
0.02
0.02
0.02
0.02
0.02
0.02
0.04
0.04
0.04
0.04
0.04
0.04
59
63
64
60
63
64
5
12
15
±5
±12
±15
400
167
134
±200
±84
±67
15
15
15
15
15
15
214
199
193
215
200
195
20
20
20
20
20
20
0.02
0.02
0.02
0.02
0.02
0.02
0.04
0.04
0.04
0.04
0.04
0.04
59
63
64
60
63
64
24
5
12
15
±5
±12
±15
400
167
134
±200
±64
±67
10
10
10
10
10
10
134
124
120
135
126
122
15
15
15
15
15
15
0.02
0.02
0.02
0.02
0.02
0.02
0.04
0.04
0.04
0.04
0.04
0.04
59
63
64
60
63
64
PWR624
PWR625
PWR626
PWR627
PWR62B
PWR629
2B
5
12
15
±5
±12
±15
400
167
134
±2oo
±B4'
±67
10
10
10
10
10
10
114
107
104
114
lOB
105
15
15
15
15
15
15
0.02
0.02
0.02
0.02
0.02
0.02
0.04
0.04
0.04
0.04
0.04
0.04
59
63
64
60
63
B4
PWR630
PWR631
PWR632
PWR633
PWR634
PWR635
4B
5
12
15
±5
±12
±15
400
167
134
±2oo
±B4
±67
10
10
10
10
10
10
67
63
63
67
63
63
10
10
10
10
10
10
0.02
0.02
0.02
0.02
0.02
0.02
0.04
0.04
0.04
0.04
0.04
0.04
59
63
B4
60
63
B4
45
45
45
COMMON SPECIFICATIONS!11
Condition.
Min
5V Models
12V Models
15V Models
24V Models
2BV Models
4BV Models
4.5
10.8
13.8
21.6
25.2
43.2
ISOLATION
Rated Voltage
Test Voltage
Resistance
Capacitance
60 Seconds, 60Hz
1000
3000
Leakage Current
240V.60Hz
OUTPUT
Voltage Accuracy
Voltage Balance
Temperature Coefficient
Ripple and Noise
Dual Output Units Only
-25°C::::; TA:5 -85°C
BW = DC to 10MHz
Parameter
INPUT
Voltage Range
V,N =
V,N =
V,N =
V,N =
V,N =
V,N =
Typ
Max
Unlle
5.5
13.5
'16.5
2B.5
31.0
53.0
VDC
VDC
VDC
VDC
VDC
VDC
VDC
V..
GO
10
140
20
±0.5
±D.3
±0.01
30
±1
pF
pA,rms
%
%
'!bI'C
mV, pop
TEMPERATURE
Specification
Operation
Storage
NOTE:
..
(1) SpeCifications typical at TA
-25
-40
-55
+85
+95
+125
'C
'C
'C
= +25°C. nominal Input voltage, and rated output current
unless otherwise noted.
48
Burr-Brown Power Sources Handbook, Vol. 1
PWR6XX Series
MECHANICAL
I
I
2.000 ±0.015
j--(50.80±0.38)~
IL---r+.....,.r----'TTU~0.170.Min
IT(~:.:~)Max
T
"'.,
LOMO ±0.003
5 '"
~ ~
g~
~-.:-=-.-'r
(Top View-"A" Package Option)
(4.32)
(1.02 ±a.08)
(Side View-"A" Package Option)
......... I·· . ·
t
t
: : : : : : : ; : ~-y~uT ~ ; t !
t·
::
::::: :;;:;:;::!:;:
~
: : : : ; : : ; : ~ I ; ; ; : 1: ; 1
(Bottom View-"A" Package Option)
I
2.000 ±0.015
(50.80 ±0.3a)~
y
IL---ru=.....,.,....---.".U~
0'410
--Max
(10.41)
c;i
~~
8.
~~~~~~~~-L
(Top View "B" Package Option)
I--
2.000 ±0.015
(50.80 ±0.38)
·1
0.170 Min
L M40 ±0.003
~~
(1.02 ±0.08)
(Bottom View "B" Package Option)
(Side View-"B" Package Option)
I
T
Il)~
~~
~
ruL
U
0.040 ±0.003
(4.32)
(1.02 ±0.08)
(Bottom View-"C" Package Option)
(Side View-"C" Package Option)
m
It---(50.80±0.38)~
2.000 ±0.015 -----..l
~
T
L........_ _ _ _ _ _ _.....
~~
;t ~
8 ~
~~..,.......,....r
(Top View-"O" Package Option)
0.410
--Max
(10.41)
0.170 Min
L.-""'TT-----....".
~ ~
~~~~~~~JC
(Top View "C" Package Option)
(4.32)
COM
VOUT
1
o.4.10
--Max
(10.41)
0.170
--Min
(4.32)
0.020 ±a.002
(0.51 ±0.05)
(Side View-"O" Package Option)
'(Bottom View-"O" Package Option)
NOTES:
All dimensions are in inches (millimeters)
GRIO: 0.100 inches (2.54 millimeters)
MATERIAL: Units are encapsulated In a low thermal resistance
molding compound which has excellent chemical resistance,
wide operating temperature. range, and good electrical
properties under high humidity environments. Lead material
is brass with a hot-solder-dipped surface to allow ease of
solderability.
Common pins are missing on single output models.
ABSOLUTE MAXIMUM RATINGS
Input Voltage •.•••.•••••••..••••.•..••••.•••.•• 120% of nominal
Output Shon-Circuit Ouration ••••.••.••.•..•••••••••• 5 seconds
Internal Power Oissipation ................................. 1.5W
Lead Temperature (soldering, 10 seconds) ••••.••••••.••• +300"C
Junction Temperature •••••.•••.•.•..••. " . • ••• • . •. • • . •. +150"C
Package Thermal Resistance (Junction-te-Ambient, 6...) •• 45"C/W
Burr-Brown Power Sources Handbook, Vol. 1
49
PWR7XX Series
BURR-BROWN®
PWR7XX Series
IElElI
SW Rated Output Power
REGULATED DCIDC CONVERTER SERIES
FEATURES
• Isolation Voltage Tested per UL544, VDE750, and
CSAC22.2 Dielectric Withstand Requirement
• Barrier Leakage Current 100% Tested at 240VAC
• Single Channel
• Single or Dual Regulated Outputs
• Linear Output Regulation
• Wide Operating Temperature Range:
-40°C to +100°C
• Input and Output Filtering
• Slx·Slded Shielding
DESCRIPTION
The PWR 7XX Series offers a large selection of
regulated 5W DC/DC converters for use in such
diverse applications as process control, telecommunications, portable equipment, medical systems, airborne and shipboard electronic circuits, and automatic test equipment.
Thirty-six models allow the user to select input voltages ranging from +5VDC to +48VDC and output
voltages of +5, +12, +15, ±5, ±12, or ±15V.
Surface-mounted devices and manufacturing processes are used in the PWR 7XX Series to give the
user a device which is more environmentally rugged
than most DC/ DC converters. The use of surfacemount technologies also gives the PWR 7XX Series
superior isolation voltage. Each PWR 7XX Series
unit is tested in compliance with the dielectric
withstand voltage requirements of UL544, VDC750,
and CSAC22.2.
ORDERING INFORMATION
S-..J T7X~LG
Device Family _ _ _ _ _ _ _ _ WR
PWR indicates
DC! DC converter
Model Number
Selected from table of Electrical
Characteristics
Reliability Screening - - - - - - - - - '
No designator indicates standard manufacturing
processing
{G indicates Level I screening-burn-in only
IT indicates Level II screening-stabilization
bake. temperature cycling, and burn-in
TYPICAL APPLICATIONS
~
1
3
I
II I
Load
Input
Voltage
2
6
(Single Output Madell)
~
'1
3
I
Load
I
I
Load
I
4
Input
Vallege
2
5
(Dual Output Modell)
Inlamallonal Airport Induslrlal Park· P.O. Box 11400· Tucson. Arizona 85734· Tel. (602) 746·1111 . Twx: 911).952·1111 . Cable: BBRCORP· Talax: 66-6491
PD~2A
50
Burr-Brown Power Sources Handbook, Vol. 1
PWR7XX Series
SPECIFICATIONS
ELECTRICAL SPECIFICATIONS'"
Input Cunen!
Nominal
Input Vollaga
(VDC)
Rated
Output Voltage
(VDC)
Rated
Output Current
(mA)
No Load,
PWR700
PWR70I
PWR702
PWR703
PWR704
PWR705
5
5
12
15
±5
±12
±15
PWR706
PWR707
PWR708
PWR709
PWR710
PWR71 I
12
PWR712
PWR713
PWR714
PWR715
PWR716
PWR717
15
PWR718
PWR719
PWR720
PWR721
PWR722
PWR723
24
PWR724
PWR725
PWR726
PWR727
PWR728
PWR729
28
PWR730
PWR731
PWR732
PWR733
. PWR734
PWR735
48
Model
Regulation
typ (mA)
Rated load,
typ(mA)
Rellocled
Ripple Current,
typ(mA) pop
line,
typ(%)
1000
417
334
±500
±209
±167
168
168
168
168
168
168
1600
1535
1490
1560
1490
1450
30
30
30
30
30
30
.02
.02
.02
.02
.02
.02
5
12
15
±5
±12
±15
1000
417
334
±500
±209
±167
38
38
38
38
38
38
620
550
535
640
550
535
10
10
10
10
10
10
.02
.02
.02
.02
.02
.02
5
12
15
±5
±12
±15
1000
417'
334
±500
±209
±167
35
35
35
35
35
35
510
490
470
520
480
455
10
10
10
10
10
10
.02
.02
.02
.02
.02
.02
.04
.04
61
.04
.04
.04
65
62
65
67
5
12
15
±5
±12
±15
1000
417
334
±500
±209
±167
33
20
20
20
20
20
20
.02
.02
.02
.02
.02
.02
.04
.04
63
33
33
33
33
320
305
300
330
310
305
5
12
15
±5
±12
±15
1000
417
334
±500
±209
±167
33
33
33
33
33
33
280
270
260
280
270
280
20
20
20
20
20
20
.02
.02
.02
.02
.02
.02
5
12
15
±5
±12
±15
1000
417
334
±500
±209
±167
31
31
31
31
31
31
165
160
155
165
155
155
10
10
10
'10
10
10
.02
.02
.02
.02
.02
.02
33
Load,
typ(%)
.04
.04
.04
EHlclency,
mln(%)
61
63
.04
.04
65
62
65
67
.04
61
.04
.04
63
.04
65
62
65
67
.04
.04
.04
.04
.04
.04
.04
.04
.04
.04
.04
.04
.04
.04
63
61
65
62
65
67
61
63
65
62
65
67
.04
61
.04
63
.04
.04
65
62
65
67
.04
.04
COMMON SPECIFICATIONS'"
Condillon.
Min
5V Models
12V Models
15V Models
24V Models
28V Models
48V Models
4.65
11.00
13.70
21.00
25.00
44.50
60 Seconds, 60Hz
1000
3000
Parameter
INPUT
Voltage Range
ISOLATION
Rated Vollage
Test Voltage
Resistance
Capacitance
Leakage Current
OUTPUT
Voltage Accuracy
Voltage Balance
Temperature Coefficient
Ripple and Noise
TEMPERATURE
Specification
Operation
Storage
NOTE:
Y,N =
Y,N =
V,N =
Y,N =
Y,N =
Y,N =
Typ
Max
Unlta
6
15
17
27
31
53
VDC
VDC
VDC
VDC
VDC
VDC
VDC
V...
GO
10
170
240V rms, 60Hz
25
±0.5
±0.3
±0.01
30
Dual Output Units Only
-25°C:S: TAo S" +85°C
BW = DC to 10MHz
-25
-40
-55
pF
pA,rms
±I
%
%
%I'C
mY. pop
+65
+100
+125
'C
'C
'C
(I) Specltlcations typical at TA = +25·C. nominal input voltage. and rated output current
unless otherwise noted.
Burr-Brown Power Sources Handbook, Vol. 1
51
PWR7XX Series
MECHANICAL
(Top View)
+VOUT
+VIN
~
~ !output
i
Input
Pins
COM·
Pins
-VOUT
-VIN
(Bottom View-"B" Package Option)
k
~ 0'410
(10.41)
L-"--0.-02-0-±-0-.OO-3------...,,.1
+VOUT
(1.02 ± O.OS)
(Si~e
,+VIN
M
ax
0.170 Min
(4.32)
View-"B" Package Option)
OM·
VIN
Ie. +VIN
VOUT'
'~J~T
•
(Bottom View-"A" Package Option)
COM·f.
I
~I (~:':~)Max
.....
U
~---U--."...---0.040 ±0.003
(1.02 ±O.OS)
T-VIN
0.170 IMin
(4.32)
.YOr T •
(Bottom View-"C" Package Option)
(Sine View-"A" Package Option)
NOTES:
All dimensions are in inches (millimeters)
GAID: 0.100 inches (2.54 millimeters)
·Common pins are missing on single output models.
u-----------.. .u.:±~i;;:.~
LI...
MATEAIAL: Units are encapsulated In a low thermal resistance
molding compound which has excellent chemical resistance,
wide operating temperature range, and good electrical
properties under high humidity environments. lead material
is brass with a hot-soider-dipped surface to allow ease of
solderability.
-
0.040 ±0.003
(1.02 ±D.OS)
lT
(4.32)
(Side View-"C" Package Option)
ABSOLUTE MAXIMUM RATINGS
Input Voitage .•.•.•.•••.•••...••••.••••••.•.••• 120% of nominal
Output Short-Circuit Duration ..•••.•••.••..•••.•••••. 5 seconds
Internal Power Dissipation ..••••..•.••..••••.•.••..•.••••.• 3.5W
Lead Temparature (soldering, 10 seconds) , .•.• ,......... +3OO"C
Junction Temperature .................................. +l50'C
Package Thermal Aesistance, Junction-to-Ambient, 9,. • •. 15'CIW
52
Burr-Brown Power Sources Handbook, Vol. 1
PWR8XX Series
BURR-BROWN®
PWR8XX Series
IElElI
5 Watts-Triple-Output
UNREGULATED DC/DC CONVERTER SERIES
FEATURES
diverse applications as process control, telecommunications, portable equipment, medical systems, airborne and shipboard electronic circuits, and automatic test equipment.
Twelve models allow the user to select input voltages
ranging from +5VDC to +48VDC and output voltages of +5 and ±12VDC or ±15VDC.
• Isolation Voltage Tested per UL544, VDE75D, and
CSAC22.2 Dielectric Withstand Requirement
• Barrier Leakage Current 100% Tested at 240VAC
• Single Channel
• Single or Dual Unregulated Outputs
• Wide Operating Temperature Range: -40°C to
+1DO°C
• Input and Output Filtering
• Six·Sided Shielding
DESCRIPTION
The PWR8XX Series offers a large selection of
unregulated 5W DCI DC converters for use in such
CONNECTION DIAGRAM
ORDERING INFORMATION
~+VOUT'
+V1N
-VIN0)
~+VOUTI
7
I-Y0UT1
TYPICAL APPLICATION
3r-----,
r---42
¢
Input
Voltage
T'
PWR8XX/G
Device Family
=rPWR indicates DC! DC converter
Model Number------------'
Selected from table of Electrical
Characteristics
Reliability Screening - - - - - - - - - - - - '
No designator indicates standard manufacturing
processing
I G indicates Level I screening-bum-in only
I T indicates Level II screening-stabilization
bake, temperature cycling, and burn-in
~common.
~-VOUT2
0
Surface-mounted devices and manufacturing processes are used in the PWR8XX Series to give the
user a device which is more environmentally rugged
than most DC/DC converters. The use of surfacemount technologies also gives the PWR8XX Series
superior isolation voltage. Each PWR8XX Series
unit is tested in compliance with the dielectric withstand voltage requirements of UL544, VDC750, and
CSAC22.2.
I
Load
I
I
Load
I
4
5~
6r-----,
I
Load
7~
I
Inlernatlonal Airport Industrial Park· P.O. Box 11400 - Tucson. Arizona B5734 - Tel. (6021746-1111 - Twx: 910-952-1111 - Cable: BBRCORP - Telex: 56-6491
PDS-S90A
Burr-Brown Power Sources Handbook, Vol. 1
53
PWR8XX Series
SPECIFICATIONS
ELECTRICAL CHARACTERISTICS!lI
Model
Nominal
Input
Voltage
(VOC)
ABSOLUTE MAXIMUM RATINGS
Channel 1
Rated Output
Channel 2
Rated Output
Maximum
Input
Voltage
(VOC)
Current
(mA)
Voltage
(VOC)
Current
Current
(mA)
(mA)
PWR800
PWR801
5
5
5
250
250
±12
±15
±156
±125
1665
1685
PWR802
PWR803
12
5
5
250
250
±12
±15
±156
±125
695
695
PWR804
PWR805
15
5
5
250
250
±12
±15
±156
±125
555
555
PWR806
PWR807
24
5
5
250
250
±12
±15
±156
±125
345
345
PWR808
PWR809
28
5
5
250
250
±12
±15
±156
±125
295
295
PWR810
PWR811
48
5
5
250
250
±12
±15
±156
±125
170
170
Parameter
Conditions
IU)AI)
ISOLATION
Rated Voltage
Test Voltage
60Hz, 60 seconds
= Rated Load
OUTPUT
Voltage Accuracy
Voltage (No Load)
Ripple Voltage
Line Regulation
Package Thermal Resistance. . . . . . . . . . . . .. 27°CIW
Lead Temperature
(soldering, 10 seconds) "." ....••...•.• +300'C
MECHANICAL
L
I
Min
"iYP
Ma.
±2O%10f Rated I,nput
50
-----;,-----
aURR-IlROWNo&
11911911
1.625±0.015
(41.28 ±0.38)
~
Unit.
Marked with
specific model
number ordered.
mA,p-p
~
1000
3000
GO
10
V'SO
ILOAD
VOUT
Vou,
VOUT
80
= 240VAC
15
= Rated Load
= 5V Models
= 12V Models
= 15V Models
kOAD = Rated Load
(Top View)
VDC
VPEAK
±5
7
15
18
%
VDC
VDC
VDC
mV, p-p
%/%
+85
+100
+125
'C
·C
·C
100
1
3
pF
IlA
4
5
2
1
6
TEMPERATURE
Specification
-25
Operation
Storage
-40
NOTE:
--1
l
1.125 ±O.ot5
(28.58 ±0.38)
1
Resistance
Capacitance
Leakage Current
Junction Temperature .................... +175°C
PWR8XX
COMMON SPECIFICATIONSI1I
INPUT
Voltage Range
Input Ripple Current
Input Voltage" •.••.. "...... 120% X rated voltage
Output Short-Circuit Duration. . . . . . . .. Momentary
Internal Power Dissipation. . . .. . ... . . . . . . . .. .. 4W
-55
7
(Bottom VIew)
(1) Specifications typical at TA = +25°C. nominal input voltage, and rated output
t
current unless otherwise noted.
0.410 Max
(10.41)
W (Side View)
-' L
.
0.020 ±a.002
- " - (0.51 ±0.05)
u.
E-'
~
Min=--J
(4.32)
NOTES:
All dimensions BrB in inches (millimeters)
GRID: 0.100 Inches (2.54 millimeters)
MATERIAL: Low thermal resistance molding
compound which has excellent chemical
resistance. wide operating temperature range
and good electrical properties under high
humidity environments. Lead material Is
l "'BSS with a hot-solder-dipped surface t:)
a' 'W~' ~ of solderability.
54
Burr-Brown Power Sources Handbook, Vol. 1
PWRI017
BURR-BROWN®
PWR1017
11131131
Four-Channel, Dual-Output, Synchronizable
UNREGULATED DC/DC CONVERTER
FEATURES
APPLICATIONS
•
•
•
•
•
•
•
•
•
•
•
•
•
Synchronlzable
Ali Outputs Isolated
Output Power to 3W
High Isolation Voltage-loooVpk
Six-Sided Shielding
Input and Output Filtering
Low Profile Package-o.4" High
Power for High Resolution Data Acquisition
Precision Test Equipment
Spot Regulator
Process Control
Portable Equipment
Multiple Power Supplies
DESCRIPTION
The PWRI017 is a four-channel, dual-output unregulated DC! DC converter designed for low noise
applications where high efficiency and switching
synchronization are required.
Any unit whose slave pin is connected to another
unit's master pin will cause the oscillators to lock
together. The PWRlOI7 may also be driven from a
system master clock. The free running switching
frequency is 250kHz.
.
The PWRI017 has four isolated plus and minus
output voltages approximately equal to the magnitude of the input voltage. It operates over an input
voltage range of 10VDC to 18VDC. Rated output
current for the PWRI017 is 25mA for all outputs.
CONNECTION DIAGRAM
Isolation voltage between the input and any of the
four output circuits is 1000Vpk continuous. The
same isolation specification applies between any of
the four dual outputs.
Six-sided shielding suppresses electromagnetic radiation which could disturb sensitive analog measurements or interfere with system timing signals. Filtering the PWRlOl7 input and outputs minimizes the
effects of electrical noise on the source and loads of
the converter.
Each PWRI017 is tested in compliance with UL544,
VDE750, and CSA C22.2 dielectric withstand specifications. In addition, barrier leakage current is
100o/c tested.
MECHANICAL
+
~.!'!
Osc. Out 4.
+V'N 3.
-V'N 2'
Sync. In 1.
.9-
C L_____ I
-L~]
l~ _8
o Ch.l L_
~10+
N
T
A
Ch.2
Ch.3
Ch.4 [ij
-~ a.r------,
: ~13
__
lm'
L __
~I~~
-
+
~12
1I
T
0.410 M
(10.41)
11
0.250 ±0.080
III I ~ (6.35 ±2.03)
0.040 ±0.OO2
(1.02 ±0.05)
11+
NOTE: All dimensions are In Inches (millimeters).
Grid = 0.100" (2.54mm).
.~
o
~
~ ~
8o 5l
0
N
~
I.
2.000 ±0.015
(50.80 ±0.38)
~5 67
4
3
2
1
161514
.1
1~
11
12
3
Bottom View
Inlernational AIrport Induslrlal Park· P.O. Box 11400· Tucson. ArIzona 85734 • Tel. 16021 746·1111 • Twx: 911J.952·1111 • Cable: BBRCORP • Telex: 66-8491
PDS-706A
Burr-Brown Power Sources Handbook; Vol. 1
55
PWRI017
ABSOLUTE MAXIMUM RATINGS
SPECIFICATIONS
Input Voltage. , ... , ........ 18VDC
Output Current ... , ........ 500mA
Output Short Circuit
Duration ... " .. ' •... Momentary
ELECTRICAL
At TA ;:::;; 25°C. V'N;:::;; 15VDC.
ILOAD;:::;;
±25mA and in free running mode unless otherwise noted.
PWR1017
CONDITIONS
PARAMETER
MIN
INPUT
Rated Voltage l11
Voltage Range
MAX
NORM
UNITS
VDC
VDC
rnA
rnA
rnA, p-p
15
18
10
Input Current
kOAO;:::;;
ILOAD ;:::;;
Ripple Current
ILOAD ;:::;;
ISOLATION
Rated Voltage l31
Resistance
70
285
80
0
Rated Load
Rated Load
Test: 60sec, 60Hz, 3000V, pk
10
15
0.9
VISO = 240VAC, 60Hz
OUTPUT
Rated Voltage
Voltage Range
ILOAD;:::;;
OmA
I LOAD ;:::;; Rated Load
Each output
Total of all outputs
Rated Current
Current Range
Each output
Total of all outputs
10VDC < V'N < 18VDC
Line Regulation
Load Regulation
Ripple Voltage
0>
IlOAD
±15
±16.5
±16
±14.25
±25
200
0
0
SYNCHRONIZATION'"
fSYNC Range
VSYNC Range
Oscillator Output Fanout
VSYNC, max
VSYNC Duty Cycle
0
Rated Load
VSYNc > 6.4Vp-p
400kHz < fsyNc < 700kHz
Max deviation from
±100
400
6.4
-VIN
5
TEMPERATURE
Specification
Operating
Storage
VDC
VDC
VDC
rnA
rnA
rnA
rnA
mVlmV
mVimA
mV, pk
mV, pk
±18
±15.75
±40
500
ILoAD;:::;;
ILoAD ;:::;;
3
1.16
12.5
±10
> 25mA
50
-25
-40
-55
PWR 1017 X
Device Family
TeT
PWR indicates DCIDC converter
Model Number--------'
Reliability Screening _ _ _ _ _ _....J
No designator indicates standard
manufacturing process
IG indicates Level I screeningburn-in only
IT indicates Level II screeningstabilization bake, temperature
cycling, and burn-in
VDC
GO
pF
/lA
1000
Capacitance
Leakage Current
350
ORDERING INFORMATION
700
36
2
50
60
kHz
V, p-p
Synch Inputs
V
+85
+100
+125
"C
"C
"C
Control Circuitry Block Diagram
%
NOTE: (1) Other voltages ava,lable on request. (2) Operating frequency (,n sync mode) = fSYNcl2. Osc,lIator
frequency (pin 4, free running)::;: 2 (1 operation). Oscillator frequency (pin 4, sync mode):;:: fsyNc. (3) Ratings
apply input-to-output and are typical channel-to-channel
NOTE: Care should be taken when the synchronization input pin is not used, in order to avoid the
possibility 01 noise pick-up and false PLL locking.
This could·destroy the unit and/or any other units
that are coupled to its synchronization output (pin
4). This protection may be accomplished by either
tying the synchronization pin to -VIN, or clipping
pin 1 off flush with the module surface. Tying pin 1
to -VIN is preferred.
TYPICAL PERFORMANCE CURVES
OUTPUT VOLTAGE VS
LOAD CURRENT
INPUT VOLTAGE VS
OUTPUT VOLTAGE
TA=+25"C
TA = +25"C, V,N = 15VDC; each output
loaded to indicated value.
TA = +25"C, V'N = 15V; each output
loaded to indicated value.
251
6'
c
INPUT CURRENT VS
OUTPUT CURRENT
17
450
"-
20'
<:.
"'"
S 15
~
:;
~
"'"'-
1
350
f"'...
'[
.5 150
0
5
13
10
12
14
16
Input Voltage (VDC)
56
~ 250
o"
18
o
10
50
20
30
40
Load Current (rnA)
Burr-Brown Power Sources Handbook, Vol. 1
V
o
V
10
/
V
20
30
Load Current (rnA)
40
PWRI017
TYPICAL PERFORMANCE CURVES (CO NT)
OUTPUT-TO-OUTPUT
INTERACTION
TAo:;;:: +25°C, V1N :;;:: 15V. free running.
three outputs unloaded.
INPUT CURRENT VS
INPUT VOLTAGE
T. = +25°C. I, = ±25mA
320
;:
~ 280
"
()
:;
a.
E 260
/
/'
18
V
,/
L C
0
h
r-~
n
n
a a
(3
~ 17 f - -
.;
,;
0>
S 16
....
d
~
e
CHANNEL-TO-CHANNEL
INTERACTION
T" :;;:: +25°C. V1N :;;:: 15VDC. free running.
Ihree oulpuls loaded 10 ±15mA
17
~ I,
~ 1,=
V,
I
lSmA
.;
-
;g
:;
a.
:; 15
,;
~15t---11---11--~~__~
;g
:;
514~-~1--~1--~--~
o
o
13~0----~25-----5~0----~75----..Il00
14
240
10
14
16
12
Inpul Vollage (VDC)
18
25
50
75
Load Currenl. I, (mA)
VS OUTPUT VOLTAGE
AND INPUT CURRENT
100
Load Currenl. I, (mA)
TEMPERATURE
CHARACTERISTICS
I"NC
OUTPUT POWER
DERATING
VIN :;;::
+15V
I
ILOAD:;;::
±25mA. free running.
+250
.
-70t--"""'1r---+-
9
6
0
INPUT CURRENT VB
OUTPUT CURRENT
V,N = 15VDC
180
15
0"
c
11
100
±30
±eo
±90
±120.
6
V,N (VDC)
iNPUT CURRENT VB
INPUT VOLTAGE
ILOAD = ±50mA
EFFICIENCY VB
POWER OUT
V'N= 15VDC
240
80
180
70
«
g 120
/
.!
80
50
0
±30
±60
leOAD (mA)
±90
±12O
6
9
12
15
40
18
~
3
EFFICIENCY VB
INPUT VOLTAGE
ILOAD = ±50mA
240
180
8
~ 12~---+----~----~--~
80
~
70
r----Ioo.
!""""'o!oo
.....
~
~ 80
0::
.!!!
120
J
4
POUT(W)
INPUT CURRENT VB
AMBIENT TEMPERATURE
V,N = 15VDC; ILOAD = ±50mA
18r----.----,-----r---~
~
o
V,N(VDC)
OUTPUT VOLTAGE VB
AMBIENT TEMPERATURE
V,N = 15VDC; ILOAD = ±50mA
15
9
ILOAD (rnA)
T.('C)
80
OUTPUT VOLTAGE vs
INPUT VOLTAGE
leO'D= ±50mA
u
ffi
9r----+----+---~--~
60
6-40'=-----5-=----+-J30L---+~65~--+:-:-:'100
T.('C)
68
0
-40
50
40
-5
+30
+65
+100
T. ('C)
Burr-Brown Power Sources Handbook, Vol. 1
6
9
12
V,N (VDC)
15
18
PWR510X
BURR-BROWN®
PWR5104
PWR5105
IElElI
9W Rated Output Power
REGULATED DC-TO-DC CONVERTER
FEATURES
•
•
•
•
•
•
•
•
LOW COST
LOW NOISE
LINEAR OUTPUT REGULATION
WIDE OPERATING TEMPERATURE RANGE:
-40°C TO +100°C
±12VDC AND ±15VDC OUTPUTS
INPUT AND OUTPUT FILTERING
SIX-SIDED SHIELDING
BARRIER LEAKAGE CURRENT 100% TESTED AT
240VAC
DESCRIPTION
The PWR5104 and PWR5105 offer respectively
±12VDC and ±15VDC ouputs of regulated 9W
power driven from your +SV system buss. These
units are designed for use in such diverse applications
as process control, telecommunications, portable
equipment, medical systems, airborne and shipboard
electronic circuits, and automatic test equipment.
The PWRS104 and PWR510S offer a low cost
alternative to the models currently in the market. In
addition these models utilize high frequency switch
ing in order to maintain a low EMI and RFI
environment. Both models incorporate input and
output filtering along with six-sided shielding to
keep unwanted noise from your circuit.
Surface-mounted devices and manufacturing processes are used in the PWR5104 and PWR5105 to give
you a device which is more environmentally rugged
than most DC-to-DC converters. These manufacturing and design technologies also give superior
isolation voltage.
ORDERING INFORMATION
CONNECTION DIAGRAM
T
PWR 510X/G
Device Family
7""
PWR indicates DC/DC converter.
Model N u m b e r - - - - - - - - - - . J
Selected from table of Electrical
Characteristics
-V'NQ
+V'NQ)
Top View
Reliability Screening - - - - - - - - - - '
No designator indicates standard
manufacturing processing
/G indicates Levell screening-burn-in only
IT indicates Level II screening-stabilization
bake, temperature cycling, and burn-in
Inlernational Airport Induslrlal Park· P.O. Box 11400· Tucson. Arizona 85734 . Tel. (602) 746·1111 . Twx: 910·952·11 II . Cable: BBRCORp· Telex: 66·6491
PDS-713A
Burr-Brown Power Sources Handbook, Vol.]
69
PWRSIOX
SPECIFICATIONS
ELECTRICAL
Specifications typical at TA = +25°C. nominal input voltage and rated output current unless
otherwise noted.
MECHANICAL
PWR510415105
PARAMETER
INPUT
Nominal Voltage
Voltage Range'"
Input Current
Input Current
Ripple Current
CONDITIONS
MIN
TVP
MAX
5.00
4.75
5.25
60
No load
Rated load
At rated load
2400
5
OUTPUT
PWR5104 Rated Voltage
PWR5105 Rated Voltage
Accuracy
Voltage Balance
±12
±15
±o.5
±0.3
2570
±1.0
UNITS
ISOLATION
Rated Voltage
Resistance
Capacitance
Leakage Current
-25'C to +85'C
±o.Ol
±375
±300
BW ~ DC to 10MHz
6
70
35
0.02
0.04
75
7SO
10
50
240Vrms, 60Hz
15
GENERAL
Switching Frequency
VDC
VDC
%
%
%l'C
mA
mA
mV,p-p
%
%
%
VDC
GO
pF
pA,rms
kHz
SO
T
:ei
~ ci
~ tl
§~
~--:=.,..-,.....,.,~r
Top View
-25
-40
-55
+85
+100
+125
'C
'C
'C
"A" Package Option
j I : : : : : : : ; : : :J; +tH
: t i :::::::: ~-: ~
!! ~ ·~.i-
: ; i : : : : : : :+~~!: r : : :
• I
•t
I
•
•
•
t •••
'!'
~
•
•
+VIN' 1
+ •
t
•
1 • • • • ...
... f
•
t ... ..
~ .. COM." ..... ..
~ I . . . . . . -VIN-" ......... ~ ... ..
..
If
....
f
..
......... f···· ......... .
.........·-Vour.'
r·····• . ··
•
TEMPERATURE
Specification
Operation
Storage
I
2.000 ± O . 0 1 5 .
(SO.80 ±0.38)---,
VDC
VDC
mA
mA
mA,p-p
Temperature
Coefficient
PWR5104 Rated Current
PWR5105 Rated Current
Ripple and Noise
Line Regualtion
Load Regulation
Elliciency
I
r---
•••••• + •
t
••
: : : : :~ : ! : : : : : : :! : : :
• • • • • ,. • • • • t · • • • t • • •
::::; !";;::!!:-::!::;
Bottom Vlew-"An Peckage Option
NOTE: (1) Other voltage rangas available. Contact factory.
ABSOLUTE MAXIMUM RATINGS
L....--ru=-T,----...U~
O'410M
(10.41)
Input Voltage""""""".""""""" 110% of nominal
Output Short-Circuit Duration , ... ".,""'" 15 seconds
Internal Power Dissipation "."".""""""".,,. 4.0W
Lead Temperature (soldering, 10 seconds)..... +300'C
Junction Temperature ........... " ..... " ......... +150'C
Package Thermal Resistance,
Junction-to-Ambient, 9". """""""""",,. 15'CIW
L Q040 ±o.OO3
ax
0.170 Min
(4.32)
(1.02 ±o.OB)
Side View-"A" Package Option
NOTES:
All dimensions are In inchas (millimeters)
GRID: 0.100 inchas (2.54 millimeters)
MATERIAL: Units are encapsulated In a low thermal
rasistance molding compound which has excellent
chemicel resistance, wide operating temperature
range, and good electrical propertlas under high
humidity environments. Lead material Is bross with
a hot-solder-dlpped surface to allow ease of solderability.
70
Burr-Brown Power Sources Handbook, Vol. 1
PWR510X
TYPICAL PERFORMANCE CURVES
EFFICIENCY VS LOAD
(at Nominal Input Voltage)
EFFICIENCY VS INPUT VOLTAGE
(at Full Power Out)
100
80
90
70
r--- r---
80
~
~
""
ffi
70
·8
v
60
~
~
~
~
20
iii
~~
·8
~
10
20
10
o
+4.50
+4.75
+5.00
+5.25
0
+5.50
3
6
9
12
Power Out (W)
Input Voltage (V)
INPUT CURRENT VS TEMPERATURE
OUTPUT POWER DERATING
10.0
I
+85'C
7.5
~
Ii;
II
0
Q.
\
5.0
~
\
'5
Co
'5
0
2.5
0
3
~
;::
+25
+50
Temperature (OC)
+75
\
+100
"
....
"'
~
U
"Co
.!;
0
-50
-25
0
+25
+50
+75
+100
Temperalure ('C) AI Nominal V'N (5V)
Burr-Brown Power Sources Handbook, Vol. 1
71
PWR53XX Series (Single Output)
BURR-BROW~
PWR53XX SERIES
SINGLE OUTPUT
IElElI
AVAILABLE 4TH QTR 'SS
NEW
ADVANCE INFORMATION
SUBJECT TO CHANGE
15 Watt, 2:1 Input
WIDE RANGE DC/DC CONVERTER
FEATURES
APPLICATIONS
• 2:1 INPUT VOLTAGE RANGE
• TELECOMMUNICAnONS EQUIPMENT
• REMOTE ON/OFF
• SHORT-CIRCUIT PROTECTION
• BATTERY POWERED SYSTEMS
• SIX-SIDED SHIELDING
• AIRBORNE AND SHIPBOARD
ELECTRONICS
• OVER-VOLTAGE PROTECTION
• PORTABLE INSTRUMENTATION
• PI INPUT AND OUTPUT Fli..TERING
DESCRIPTION
The PWR53XX Series offers a large selection of regulated 15W DC/DC converter with a wide 2:1 input
voltage range. These products are loaded with features
such as short-circuit protection, six-sided shielding,
remote ON/OFF, and over-voltage protection.
A combination of high-efficiency, remote ON/OFF,
and wide input range makes the PWR53XX series
ideal for battery powered systems. Other well-suited
applications included telecoinmunications equiprilent,
portable instrumentation, and airborne and shipboard
electronics.
The PWR53XX Series is also available in dual and
triple outputs to suit almost every requirement. Input
ranges of 9-18VDC, 18-36VDC, and 36-72VDC give
the designer great flexibility in system powering. Using
PWM regulation allows for efficiencies of 75% to
85%, which along with the remote ON/OFF function
helps conserve battery power.
Six-sided shielding suppresses electromagnetic radiation, which could disturb sensitive analog measurements or interfere with system timing signals. Internal
PI filters on both input and output lines minimizes the
effects of switching noise on the source and loads.
All units utilize surface mount technology for ruggedness and long-term reliability. Conservative design
rules were followed, yielding low component stress
levels and a high MTIF. These units are designed and
built with the same commi~i1t to excellence as our
high grade medical power products.
Int8l'nationalAlrportlnciustrlalPark • MalllngAddrets:POBolll141JO • TUcIon,AZ85734 ' S1rettAdclress:6730 S. TUcson Blvd. ' Tucsan,AZ 85706
Tel: (602) 74601111
Twx: 8100852-1111
cabll: BBRCORP
Tellx: 66-6491
FAX: (602) 118&-1510
PD8·873
72
Burr-Brown Power Sources Handbook, Vol. 1
PWR53XX Series (Single Output)
SPECIFICATIONS
ELECTRICAL
MECHANICAL
At T. = +2S'C. Rated Input Voltage. Rated Output Current unless otherwise noted.
PARAMETER
CONDITIONS
INPUT
Ranges
MIN
TYP
18
36
72
9
18
36
ISOLAnON
Rated 'Voltage
Resistance
MAX
SOO
Overvoltage Protection
REGULAnON
Une
Load
VDC
VDC
VDC
VDC
Gn
10
OUTPUT
Rated Voltages
Rated Currents
Voltage Accuracy
Temperatune Coefficient
Ripple and Noise
Response Time
UNITS
See Below
See Below
BW= OCto 10MHz
To within ±1.0%
25% step change in load
SVCUT Models
12Vcur Modeis
lSV"" Models
75
SOO
VDC
mA
%
%I"C
mVp·p
lIS
6.8
15
18
VDC
VDC
VDC
Lowlineto Highllne
Full load 10 1/4 Load
±O.2
±1.0
±1.0
±O.02
GENERAL
Efficiency
Switching Frequency
7S
100
(Top View)
..
~
L=..1.=:...1
-.,-.",
~
Marked
with
specific
model
number
ordered.
PWR53XX
USA
(Bottom View)
7 •
02
1.0"
6 0
S •
4 •
8
%
%
3 •
2.S00·
(63.50)
(Side View)
%
kHz
0.700"g
(17.78)
0.170·
U
(4.32)
I
THERMAL
Specification
Operating
Storage
I
U
./!0.04" Dla
(1.02)
Min
REMOTE ON/OFF
logic Compatibility ...................................... CMOS or Open Collector TIL
ON .................................................................. +5.0VDC or Open Circuit
Eo OFF .........................................................................................+O.4VDC
Shutdown Idle Curnent ....................................................................... 18mA
Control Common ..................................................................................-V~
e.
ABSOLUTE MAXIMUM RATINGS
Output Short-Circuit Duration ................................................... Continuous
Lead Temperature (soldering. 10 sec) ........................................... +300·C
NOTE: All dimensions ane in Inches
(millimeters).
MATERIAL: Units are encapsulated In a low
thermal neslstance molding compound that
has excellent chemical neslstance. wide
operating temperature range. and good
electrical properties under high humidity
environments. The shell Is a non-conductive
black dlallylphthalate which allows for sixsided non·conductivity.
MODEL NUMBERS
MODEL
PWRS300
PWRS301
PWRS302
PWRS303
PWRS304
PWRS30S
PWRS306
PWRS307
PWRS308
V"
9-18VDC
9-18VDC
9-18VDC
18-36VDC
18-36VDC
18-36VDC
36-72VDC
36-72VDC
36-72VDC
V"",
SVDC
12VDC
lSVDC
SVDC
12VDC
lSVDC
5VDC
12VDC
lSVDC
I"",
3000mA
1250mA
1000mA
3000mA
1250mA
1000mA
3000mA
12S0mA
1000mA
PIN CONNECTIONS
SINGLES
PIN
1
2
3
4
5
6
7
8
Burr-Brown Power Sources Handbook. Vol.}
FUNcnON
+V"
-Vw
No Pin
No Pin
No Pin
+Voor
-Voor
Remote On/Off
73
PWR53XX Series (Dual Output)
BURR-BROWN®
PWR53XX SERIES
DUAL OUTPUT
11E5I1E5I1
AVAILABLE 4TH QTR 'SS
ADVANCE INFORMATION
SUBJECT TO CHANGE
15 WaJt, 2:1 Input
WIDE RANGE DC/DC CONVERTER
FEATURES
APPLICATIONS
• TELECOMMUNICATIONS EQUIPMENT
• 2:1 INPUT VOLTAGE RANGE
• BATTERY-POWERED SYSTEMS
• REMOTE ON/OFF
• SHORT-CIRCUIT PROTECTION
• SIX-SIDED SHIELDING
• AIRBORNE AND SHIPBOARD
ELECTRONICS
• OVER-VOLTAGE PROTECTION
• PORTABLE INSTRUMENTATION
• PI INPUT AND OUTPUT FILTERING
DESCRIPTION
The PWR53XX Series offers a large selectiori of regulated 15W DC/DC converters with a wide 2:1 input
voltage range. These pEOducts are loaded with features
such as short-circuit protection, six-sided shielding,
remote ON/OFF, and over-voltage protection.
A combination of high-efficiency, remote ON/OFF,
and wide input range makes the PWR53XX series
ideal for battery powered systems. Other well-suited
applications include telecommunications equipment,
portable instrumentation, and airborne and shipboard
electronics.
The PWR53XX Series is also available in single and
triple outputs to suit almost every requirement. Input
ranges of 9-18VDC, 18-36VDC, and 36-72VDC give
the designer great flexibility in system powering. Using
PWM regulation allows for efficiencies of 75% to
85%, which along with the remote ON/OFF function
helps conserve battery power.
Six-sided shielding suppresses electromagnetic radiation, that could disturb sensitive analog measurements
or interfere with system timing signals. Internal PI
fIlters on both input and output lines minimizes the
effects of switching noise on the source and loads.
All units utilize surface mount technology for ruggedness and long-term reliability. Conservative design
rules were followed, yielding low component stress
levels and a high MTIF. These units are designed and
built with the same commitment to excellence as our
high-grade medical power products.
international Airport lndus1rlal Park • Mailing Address: PO Box 11400 • Tucson, AZ 85734
Tel: (602) 746-1111 ' Twx: 91fl.952·1111 ' cable: BBRCORP
• Street Address: 6730 S. TUcaon Blvd. • Tucson, AZ 85706
Telex: 66-6491 ' FAX: (602) 1189-1510
PDS·886
74
Burr-Brown Power Sources Handbook, Vol. 1
PWR53XX Series (Dual Output)
SPECIFICATIONS
ELECTRICAL
MECHANICAL
At TA • +25'C, Rated Input Voltage, Rated Oulput 'Current unless otherwise noted.
PARAMETER
CONDITIONS
INPUT
Ranges
MIN
TYP
9
18
36
ISOLATION
Rated Voltage
Resistance
MAX
18
36
72
500
VDC
VDC
VDC
VDC
GO
10
OUTPUT
Rated Voltages
Rated Currents
Voltage Accuracy
Temperature Coefficient
Ripple and Noise
Response Time
UNllS
SeeBelow
See Below
BW = DC to 10MHz
To within :t1.0%
25% step change In load
75
SOO
VDC
mA
%
o/oI'C
mVp·p
lIS
Lowline to Highllne
Full load to 1/4 Load
±O.2
:tl.0
%
%
:tl.0
±O.Q1
REGULATION
Une
Load
GENERAL
Elliciency
Switching Frequency
80
100
(Top View)
Marked
with
specific
model
number
ordered.
%
kHz
THERMAL
(Side View)
Specification
Operating
Storage
I
O.700"g
(17.78)
n--------"r'
0.170"
U
U
(4.32)
~ 0.04" Dla
Min
(1.02)
REMOTE ON/OFF
Logic Compatibility ...................................... CMOS or Open Collector TIl.
e., ON .................................................................. +5.0VDC or Open Circuit
e., OFF .........................................................................................+D.4VDC"
Shutdown Idle Current ....................................................................... 18mA
Control Common ..................................................................................-V..
ABSOLUTE MAXIMUM RATINGS
Output Short-Circuit Duration ................................................... Continuous
Lead Temperature (soldering, 10 sec) ........................................... +300"C
NOTE: All dimensions are In inches
(millimeters).
MATERIAL: Units are encapsulated In a low
thennai resistance molding compound that
has excellent chemical resistance, wide
operating temperature range. and good
electrical properties under high humidity
environments. The shell is a non-conductive
black dlallylphthalate that allows for s"'-slded
non-conductivity.
MODEL NUMBERS
MODEL
PWR5309
PWR5310
PWR5311
PWR5312
PWR5313
PWR5314
PWR5315
PWR5316
PWR5317
V..
V..,
lOUT
9-18VDC
9-18VDC
9-18VDC
18-36VDC
18-36VDC
18-36VDC
36-72VDC
36-72VDC
36-72VDC
:t5VDC
:t12VDC
:tl5VDC
:t5VDC
:t12VDC
:t15VDC
:t5VDC
:t12VDC
:t15VDC
1500mA
625mA
SOOmA
1500mA
625mA
SOOmA
1500mA
625mA
500mA
PIN CONNECTIONS
DUALS
PIN
1
2
3
4
5
6
7
8
Burr-Brown Power Sources Handbook. Vol. 1
FUNCTION
+V"
-V"
+V"'"
Common
-V"",
No Pin
No Pin
Remote On/OIl
75
PWR53XX Series (Triple Output)
BURR-BROWN®
PWR53XX SERIES
TRIPLE OUTPUT
11:511:511
AVAILABLE 1ST QTR '89
ADVANCE INFORMATION
SUBJECT TO CHANGE
15 Watt,. 2:1 Input
WIDE RANGE DC/DC CONVERTER
FEATURES
APPLICATIONS
• TELECOMMUNICATIONS EQUIPMENT
• 2:1 INPUT VOLTAGE RANGE
• BATTERY-POWERED SYSTEMS
• REMOTE ON/OFF
• SHORT-CIRCUIT PROTECTION
• SIX-SIDED SHIELDING
• AIRBORNE AND SHIPBOARD
ELECTRONICS
• OVER-VOLTAGE PROTECTION
• PORTABLE INSTRUMENTATION
• PI INPUT AND OUTPUT FILTERING
DESCRIPTION
The PWR53XX Series offers a large selection of regulated 15W DC/DC converters with a .wide 2:1 input
voltage range. These products are loaded with features
such as short-circuit protection, six-sided shielding,
remote ON/OFF, and over-voltage protection.
A combination of high-efficiency, remote ON/OFF,
and wide input range makes the PWR53XX series
ideal for battery powered systems. Other well-suited
applications include telecommunications equipment,
portable instrumentation, and airborne and shipboard
electronics.
The PWR53XX Series is also available in single and
dual outputs to suit almost every requirement. Input
ranges of 9-l8VDC, 18-36VDC, and 36-72VDC give
the designer great flexibility in system powering. Using
PWM regulation allows for efficiencies of 75% to
85%, which along with the remote ON/OFF function
helps conserve battery power.
Six-sided shielding suppresses electromagnetic radiation, that could disturb sensitive analog measurements
or interfere with system timing signals. Internal PI
filters on both input and output lines minimizes the
effects of switching noise on the source and loads.
All units utilize surface mount technology for ruggedness and long-term reliability. Conservative design
rules were followed, yielding low component stress
levels and a high MTIF. These units are designed and
built with the same commitment to excellence as our
high-grade medical power products.
InternatlonalAlrpo~lndustrlalPark
• Mailing Addrus: PO Box 11400 • Tucson,AZBS734 • Streat Address: 6730 S. TUcson Blvd•• TUcson,AZ 85706
Tel: (602) 746-1111 • Twx: 91D-952·1111 • CabJe:BBRCORP
TeJex:66-6491. FAX: (602) 889·1510
PDS·887
76
Burr-Brown Power Sources Handbook, Vol.}
PWR53XX Series (Triple Output)
SPECIFICATIONS
ELECTRICAL
MECHANICAL
At T. = +25'C, Rated Input Voltage, Rated Output Current unless otherwise noted.
PARAMETER
CONDITIONS
TYP
MIN
INPUT
Ranges
18
36
72
18
36
ISOLATION
Rated Voltage
Resistance
MAX
Gil
10
See Below
See Below
5VDC Outputs
12 & 15VDC Outputs
Temperature Coefficient
Ripple and NoIse
REGULATION
Une
Load
VDC
VDC
VDC
VDC
500
OUTPUT
Rated Voltages
Rated Currents
Voltage Accuracy
UNITS
±2
±3
±O.04
75
BW= OCto 10MHz
(Top View)
Marked
with
specific
model
number
ordered.
VDC
rnA
%
%
%I'C
mVp·p
(Bottom View)
7 •
• 2
Lowtlne to Highline
Full load to 1/4 Load
±1.0
±S
GENERAL
Efficiency
Switching Frequency
80
100
%
%
1.0"
S •
%
kHz
THERMAL
(Side View)
Specllication
Operating
Storage
I1TU-------,Urr-'I
0.700"g
(17.78)
0.170"
J! 0.04- Dla
(4.32)
REMOTE ON/OFF
Min
logic Compatibility ...................................... CMOS or Open Collector TTL
Eo ON .................................................................. +S.OVDC or Open Circuit
Eo OFF .........................................................................................+0.4VDC
Shutdown Idle Current ....................................................................... 18mA
Control Common ..................................................................................-V'N
ABSOLUTE MAXIMUM RATINGS
Output Short,Circuit Duration ................................................... Continuous
Lead Temperature (soldering, 10 sec) ........................................... +300'C
(1.02)
NOTE: All dimensions are in inches
(millimeters).
MATERIAL: Units ane encapsulated In a low
thermal resistance molding compound that
has excellent chemical resistance. wide
operating temperature range, and good
electrical properties under high humidity
environments. The shell Is a non·conductlve
black diallylphthalate that allows for six-sided
non-conductivity.
MODEL NUMBERS
MODEL
PWR5318
PWR5319
PWR5320
PWR5321
PWRS322
PWRS323
PWR5324
PWR5325
PWRS326
VIN
Vo",
I..,
9-18VDC
9·18VDC
9-18VDC
18-36VDC
18-36VDC
18-36VDC
36-72VDC
36-72VDC
36-72VDC
5I±12VDC
5I±ISVDC
5/121-5VDC
5I±12VDC
5I±ISVDC
5I121-5VDC
SI±12VDC
SI±ISVDC
5I121-5VDC
IS001±310mA
IS001±250mA
IS001310/-500mA
1SOO/±31OmA
IS001±250mA
IS001310/-500mA
IS00/±310mA
IS00/±250mA
IS001310/-500mA
PIN CONNECTIONS
TRIPLE
PIN
FUNCTION
1
2
3
+V"
4
S
6
7
8
Burr-Brown Power Sources Handbook, Vol_ 1
-VIN
+Voor
Common
-Voor
+5VDCOut
No Pin
Remote On/Off
77
PWR59XX Series
BURR-BROWW
PWR59XX
1&:1&:11
AVAILABLE 4TH QTR 'SS
NEW
ADVANCE INFORMATION
SUBJECT TO CHANGE
24-Pin DIP,
REGULATED DC/DC CONVERTER
FEATURES
APPLICATIONS
• 24-PIN DIP PACKAGE
• FULLY REGULATED OUTPUTS
• INTERNAL. INPUT AND OUTPUT
FILTERING
• HIGH-DENSITY PC BOARDS
• COMPUTER PERIPHERALS
• LAN POWER
• PORTABLE EQUIPMENT
• 20mVp-p RIPPLE AND NOISE WITH NO
EXTERNAL COMPONENTS
• MTTF GREATER THAN 2 MILLION HOURS
AT+25°C
• SHORT-CIRCUIT PROTECTION
• BUILT-IN STANDOFFS
DESCRIPTION
The PWR59XX Series offers a broad line of low-cost,
high-performance. regulated. single and dual outputs
DC/DC converters in a 24-pin DIP package. These
miniature converters offer better performance in industry-standard package and pin-out at lower cost. The
PWR59XX Series is internally filtered to give an
output noise and ripple specification of 20mVp-p. No
external parts are necessary to obtain this performance.
Surface mounted components and void free. hard-cast
epoxy allow for superior reliability. excellent thermal
dissipation. and an extended tempemture range of
+85°C at no extra cost. The calculated MTrF (per
MIL-HDBK-2l7 Rev. E. circuit stress-analysis method.
ground benign) is 2.725 million hours for the PWR5905
at +25°C.
The PWR59XX Series is ideal for use on high-density
PC boards where isolated, regulated. low ripple power
is needed. An input PI filter is standard on all models,
eliminating the need for external filtering, which uses
precious board space. The standoffs allow for PC
board cleaning. helping preserve isolation. They also
allow for visual inspection of solder joints from above.
The 9VDC output units can supply power to operate
LAN circuits in a standard package. The isolation and
regulation make the PWR59XX well suited for this
application as well as digital-to-analog and analog-todigital (DAC and ADC) conversion circuits. The shortcircuit protection gives safety to the unit for prototyping and production solder-bridges.
International Airport Industrial Park • Mailing Address: PO Box 11400 • Tucson. AZ· 85734 • Street Address: 6730 S. Tucson Blvd. • Tucson, AZ 85706
Tel: (602) 746-1111
Twx: 910.95201111
Cabl.: BBRCORP
Tll8x:66-6491
FAX: (602) 889-1510
PDS·879
78
Burr-Brown Power Sources Handbook. Vol. 1
PWR59XX Series
SPECIFICATIONS
(Top View)
ELECTRICAL
Specifications at T, = +25'C, Rated Input Voltage, Rated Output Current unless otherwise noted.
PARAMETER
CONomONS
MIN
TYP
MAX
o~
UNITS
]
PWR59XX
INPUT
Ranges
4.5
10.8
21.6
43.2
Ripple Current
V1N= Nominal
ISOLATION
Rated Vollage
Resistance
5
12
24
48
50
VDC
VDC
VDC
VDC
mAp·p
5.5
13.2
26.4
52.6
500
OUTPUT
Rated Voltages
Rated Currents
Vollage Accuracy
Ripple and Noise
REGULATION
Line
Load
See Below
See Below
5VDC Oulpuls
BW =DC 10 10MHz
No External Parts
Lowline to Hlghllne
1/4 Load to Full Load
GENERAL
Switching Frequency
USA
1.250'
(31.75)
VDC
GO
10
±3
VDC
mA
%
20
mVp.p
±0.3
0.4
%
%
100
kHz
.600'
(20.32)
(Bottom View)
1 23
101112
..
o
0
0
to
.400'
(10.16)
.600'
(15.24)
.
o
131415
242322
g '~I";"
THERMAL
(1Q.42)
'-'<:rrr-n-----n-rr<:7
PARAMETER
CONOmONS
MIN
Specification
Operating
Storage
TYP
-25
-40
-55
MAX
UNITS
+85
+100
+150
'C
'C
'C
.170'
(4.32)
Min
..J
""1
1.. .. 100"
1(2.54)
.020"--11..
(.51) I I
ABSOLUTE MAXIMUM RATINGS
NOTE: All dimensions are In Inches (millimeters).
Oulput Short·Circuit Duration ................................................... Continuous
Lead Temperature (soldering, 10 sec) ........................................... +300'C
MATERIAL: Unlls are encapsulated In a low·thermal·reslstance molding compound that has excellent chemical reslslance, wide operating temperature range, and good
electrical properties under high humidity environmenls.
The shell Is a non·conductive black dlallylphthalate that
allows for six-sided non-conductivity.
MODEL NUMBERS
Duals
MODEL
PWR5900
PWR5901
PWR5902
PWR5903
PWR5904
PWR5905
PWR5906
PWR5907
PWR5908
PWR5909
PWR5910
PWR5911
PWR5912
PWR5913
Vw
Vo",
lOUT
5VDC
5VDC
5VDC
5VDC
5VDC
5VDC
5VDC
12VDC
12VDC
12VDC
12VDC
12VDC
12VDC
12VDC
5VDC
9VDC
12VDC
15VDC
±5VDC
±12VDC
±15VDC
5VDC
9VDC
12VDC
15VDC
±5VDC
±12VDC
±15VOC
200mA
lllmA
83mA
66rnA
±200mA
±83mA
±66mA
200mA
lllmA
83mA
66mA
±200mA
±83mA
±66mA
MODEL
PWR5914
PWR5915
PWR5916
PWR5917
PWR5916
PWR5919
PWR5920
PWR5921
PWR5922
PWR5923
PWR5924
PWR5925
PWR5926
PWR5927
V"
VOUT
lOUT
24VDC
24VDC
24VDC
24VDC
24VDC
24VDC
24VDC
48VDC
48VDC
48VDC
48VDC
48VDC'
46VDC
48VDC
5VDC
9VDC
12VDC
15VDC
±5VDC
±12VDC
±15VDC
5VDC
9VDC
12VDC
15VDC
±5VDC
±12VDC
±15VDC
200mA
lllmA
63mA
66mA
±200mA
±63mA
±66mA
200mA
lllmA
83mA
66mA
±200mA
±63mA
±66mA
PIN CONNECTIONS
Singles
Duals
PIN
FUNCTION
FUNCTION
1
2
3
+VIN
NC
NC
+VIN
-Vwr
Common
10
11
12
-VOJr
+VOUT
-VaIr
Common
+Vwr
13
f4
15
-Vw
+VOUT
-Vour
22
23
24
NC
NC
+Vw
Burr-Brown Power Sources Handbook, Vol. 1
-V~
-V~
+Vw
Common
Common
-Vour
+V~
79
PWR62XX Series .
8URR-8ROWN®
PWR62XX SERIES
IElElI
-S.2VDC Output, ECl Power Supply
S.2W REGULATED DC/DC CONVERTER
FEATURES
. APPLICATIONS
• -5.2 VDC OUTPUT
• liNEAR OUTPUT REGULATION
• WIDE OPERATING TEMPERATURE
RANGE: -40°C to +100°C
• ECl lOGIC SUPPLY
• HIGH-SPEED ADC
• COMPUTERS
• INPUT AND OUTPUT FilTERING
• SIX-SIDED SHIELDING
• 1000mA OUTPUT CURRENT
.5,12,15,24,28 & 48VDC INPUT
VOLTAGES
• ISOLATED
DESCRIPTION
The PWR62XX Series offers a selection of regulated
5.2W DCIDC converters for use in power ECL systems. The -5.2VDC output and various input voltages
are fully isolated, allowing tIie designer flexibility in
grounding and polarity configurations.
This series is the only one currently offered designed
to give the -5.2VDC for ECL logic with no external
trimming components. This reduces spare, labor. and
costs in the end product. The PWR62XX Series has a
low 15mVp-p typical output ripple and noise specification. No external parts are neccessary to obtain this
performance. Low noise insures system integrity and
solves problems before they occur. The absence of
extra external filtering components further reduces
.total costs.
Surface-mounted devices and manufacturing processes
are used in the PWR62XX to give the user a device
more environmentally rugged than most converters.
Void-free. hard-cast epoxy allows for excellent thermal dissipation and superior reliability. All models
incorporate input and output filtering along with sixsided shielding to keep unwanted noise from your
sensitive circuitry.
Internallonal Airport Induwlal Park • MalUng Address: PO Box 11400 • TUcaan. AZ 85734 • Street Add....: &730 S.. TUcIan Blvd. • TuCICIII. AZ 857IJ6
T81:(602) 746-1111 • Twx: 91D-952-1111 • ClbIa:BBRCORP
TII8I:66-6491' FAX: 602)888-1510
PDS·891
80
Burr-Brown Power Sources Handbook, Vol. 1
PWR62XX Series
SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
SpeciDcations at T. = +25'C, Rated Input Voltage, Rated Output Current unless otherwise speciDed.
PARAMEITER
CONDITIONS
MIN
TYP
MAX
UNITS
PWR6200
PWR6201
PWR6202·
PWR6203
PWR6204
PWR6205
4.65
11.0
13.9
21.0
25.0
5.0
12.0
15.0
24.0
28.0
48.0
10
6.0
15.0
17.0
27.0
31.0
53.0
VOC
VDC
VDC
VDC
VDC
VDC
mAp-p
INPUT
Voltage
44.5
Reflected Ripple Current
ISOLAll0N
Rated Voltage
Resistance
Capacitance
Leakage Current
OUTPUT
Rated Voltage
Voltage Accuracy
Temperature Coefficient
Rated Current
Rated Power
Ripple and Noise
REGULAll0N
Une
Load
500
10
150
V•• =240VAC, 60Hz
25
VDC
Gn
pF
pAnns
BW =DC to 10MHz
±0.01
1000
5.2
15
VDC
0/0
%l"C
mA
W
mVp-p
High Une to Low Une
Full Load to No Load
±0.04
0.06
0/0
0/0
65
60
1.0 x 10'
0/0
kHz
hours
-5.2
±1
MECHANICAL
(Top View)
1
j
I.-- 2.000 ± 0.015 ---J
(50.80 ± 0.38)
(Bottom View)
+V"
v"
GENERAL
Efficiency
Switching Frequency
MTTF'"
ORDERING INFORMATION
Device Family _ _ _ _ _ _ _ _ _
(Side View)
-'J§Z~
~
U
L---:-rr:----rr
f
PWR Indicates DClDC converter
Model Number - - - - - - - - - - - - - - - '
.
0.040 ±o.o03
0'410Max
(10.41)
0.170 Min
(4.32)
(1.02±o.o8)
Reliability Screening - - - - - - - - - - - - - - '
No designator Indicates standard manufacturing process.
IG Indicates Levell screening-burn-In on/y.
fT Indicates Level II screenlng-stabllizaUon bake, temperature
NOTES: 1) All dimensions are In Inches
(millimeters).
cycling, and burn-In.
GRID: 0.100 Inches (2.54 millimeters)
THERMAL CHARACTERISTICS
PARAMETER
MIN
Speclficallons
-,25
Operating
-40
Storage
-55
Package Thennal Resistance
(Junction-ta-Amblent)
TYP
15
MAX
+85
+100
+125
UNITS
'c
'C
'C
'C/W
MATERIAL: Units are encapsulated In a low
thennal resistance molding compound that
has excellent chemical resistance, wide
operating temperature range, and good
eledrlcal properties under high humidity environments.
ABSOLUTE MAXIMUM RATINGS
Inpul Voltage .......................................................................................... 6V
Qulput Short-Circuit Duration ••.••••••.•••.••..•••....•••••.••••••.••••••••.•••••.••••.• 15 min
Internal Power Dissipation ................................................................. 4.0W
Lead Temperature (Soldering, 1Osee) ............................................ +300'C
Junction Temperature ..................................................................... +150'C
Burr-Brown Power Sources Handbook, Vol, 1
81
PWS72S/726
BURR-BROWN®
PWS725
PWS726
113131
Isolated, Unregulated
DC/DC CONVERTERS
FEATURES
• ISOLATED ±7 TO ±IBVDC OUTPUT FROM SINGLE
7 TO lBVDC SUPPLY
• ±15mA OUTPUT AT RATED VOLTAGE ACCURACY
• HIGH ISOLATION VOLTAGE
PWS725: 150DVrms
PWS726: 3500Vrms
• LOW LEAKAGE CAPACITANCE: 9pF
• LOW LEAKAGE CURRENT: 2pA. max. at 240VAC
50/60Hz
• HIGH RELIABILITY DESIGN
• AVAILABLE WITH OUTPUT SYNCHRONIZATION
SIGNAL FOR USE WITH IS0120 AND IS0121
•
•
•
•
PROTECTED AGAINST OUTPUT FAULTS
COMPACT
LOW COST
EASY TO APPLY-FEW EXTERNAL PARTS
APPLICATIONS
•
•
•
•
MEDICAL EQUIPMENT
INDUSTRIAL PROCESS EQUIPMENT
TEST EQUIPMENT
DATA ACQUISITION
DESCRIPTION
The PWS725 and PWS726 convert a single 7 to
ISVDC input to bipolar voltages of the same value
as the input voltage. The converters are capable of
providing ± 15mA at rated voltage accuracy and up
to ±40mA without damage. (See Output Current
Rating.)
The PWS725 and PWS726 converters provide reliable, engineered solutions where isolated power is
required in critical applications. The high isolation
voltage rating is achieved through use of a speciallydesigned transformer and physical spacing. An additional high dielectric-strength, low leakage transformer coating increases the isolation rating of the
PWS726.
Reliability and performance are designed in. The
bifilar wound, wire bonded transformer simultaneously provides lower output ripple than competing
designs, and a higher performance/ cost ratio. The
soft-start oscillator/driver design assures full operation of the oscillator before either MOSFET driver
turns on, protects the switches, and eliminates high
inrush currents during turn-on. Input current sensing
protects both the converter and the load from
possible thermal damage during a fault condition.
Special design features make these converters especially easy to apply. The compact size allows dense
circuit layout while maintaining critical isolation
requirements. The Input Sync connection allows
frequency synchronization of multiple converters.
The Output Sync (PWS725A and PWS726A only)
is available to synchronize ISOl20 and ISOl21
isolation amplifiers. The Enable input allows control
over output power in instances where shutdown is
desired to conserve power, such as in battery-powered
equipment, or where sequencing of power turnon/turn-off is desired.
Inllrnatlonal Alrporllndullrial Park. P.O. Box 11400 • Tucson. Arizona 85734 • Tel.: 16021746-1111 • Twx: 910-952·1111 • Cable: BBRCORP • Telex: 66-11491
PDS-7368
82
Burr-Brown Power Sources Handbook,. Vol. 1
PWS725/726
SPECIFICATIONS
ELECTRICAL
T",~· +-25°C. CL ~
1.DpF ceramic, V'N"'" 15VDC, operating frequency:::: 800kHz, VOUT == ±1SVOC, C,N
= 1.0~F ceramic. lOUT = ±15mA, unless otherwise noted.
PWS7261726A
PWS725/725A
PARAMETERS
CONDITIONS
MIN
TYP
MAX
INPUT
Rated Voltage
Input Voltage Range
Input Current
Input Current Ripple
15
18
7
10::::: ::15mA
No external filtering
L-C input filter, L,N = 10DpH. G,N::: lpFIII
Conly, C,N = lpF
77
150
5
60
MIN
TYP
MAX
· ·· ·
··
UNITS
VDC
VDC
rnA
rnAp-p
rnAp-p
mAp-p
ISOLATION
Test Voltages
Input to output. 10 seconds
Input to output. 60 seconds, minimum
Input to output. continuous, AC 60Hz
Rated Voltage
4000
1500
8000
3500
1500
2121
Input to outpul, continuous DC
Input to output
Input to output, 240Vrms, 60Hz
Isolation Impedance
Leakage Current
10"119
1.2
2.0
OUTPUT
Raled Outpul Voltage
Output Current
14.25
Balanced loads
Single-ended
Balanced loads, ±10mA lOUT
No external capacitor
Lo = 10/lH. Co = I/lF (Figure 1)
Lo = O/lH. Co filter only
Lo = 10/lH. Co = 1.0/lF
Lo = 100/lH. C filler
C filter only
<
Load Regulation
Ripple Voltage (400kHz)
Output Switching Noise
Output Capacitive Load
Voltage Balance, V+, VSensitivity to AVIN
Output Voltage Temp. Coefficient
Output Sync Signal
PWS725A1PWS726A only
15.00
15.0
< ±40mA
15.75
40
80
0.4
60
10
See Performance Curves
1
10
1
0.04
1.15
10
30
Square Wave, 50% duty cycle
TEMPERATURE
Specification
Operating
Storage
-25
-25
-25
MECHANICAL
··
· ··
··
+85
+85
+125
3500
4950
·
··
··
VDC
Vrms
Vrms
VDC
OllpF
/lA
VDC
rnA
rnA
%/mA
rnVp-p
rnVp-p
· ·
·
rnVp-p
/IF
/IF
·
V. p-p
··
···
·
%
VlV
rnVl·C
·C
·C
·C
PIN CONFIGURATION
32
NOTE: Leads in true
position within .010"
(.25rnm) R at MMC at
seating plane.
-Yo
NC
NC
Oulput Ground
~ 1
[2
[ 3
[ 4
Pin numbers shown for
reference only.
Numbers are not
marked on package.
16 J.
E!
32
+Vo
31 ~ NC
30 ~ Output Ground
29
PWS725 }
PWS726
Do Nol Use
P
:~~~~~~
} Oulpul Sync
~----___ A ______~I
--F
NC [ 13
J~]_
+J
___l _
Input Ground ~ 14
Input Sync ~ 15
V'N [ 16
DIM
A
B
C
D
F
G
H
J
K
l
N
INCHES
MIN
MAX
1.580
1.620
.880
.900
.310
.370
.016
.020
.000TYP
.100 BASIC
.044
.009
.150
.900
.040
.056
.012
.185
.920
.060
20 ~
19
18 ~
17P
Frequency Adjust
Frequency Adjust
Enable
NC
MILLIMETERS
MIN
MAX
41.15
40.13
22.35
7.87
0.41
22.86
9.40
0.51
1.02TVP
2.54 BASIC
1.12
1.42
3.81
0.30
4.70
22.86
0.23
23.37
1.02
1.52
Burr-Brown Power Sources Handbook, Vol. 1
83
PWS725 I 726
TYPICAL PERFORMANCE CURVES
T... = . . . . 25°C, Vee -= ±15VDC unless otherwise noted.
OUTPUT CAPACITANCE YS RIPPLE VOLTAGE
LOAD REGULATION
20
100
90
VIN = +15V
18
c:
80
6.
>
0
:g,
l!!
60
.s
~
V,N = ±15V
>
:;
c. 14
:;
01\
GO
Q.
.9-
4
:;
c.
:;
o
~
~ 16
l!!
'0
g
a:
\
10 - ±15mA
O~
0
Balanced Loads
Single-ended Loads ........
~ I:::-
12
f'.
0
.....
o
O~
0
I~
Peak-to-Peak
"'" f~
DC<
Capacitor Only
20MHz
L-C
~
0.1
0.2
0.3
0.4
0.5
10
FiII~r. L ~ 10rH-
0.6
0.7
0.8
0.9
o
10
20
20
40
40
80
30
60
Balanced
Single
Output Current (rnA)
1.0
Capacitance (PF)
LINE REGULATION
MAXIMUM POWER DISSIPATION
20
8
I
10 = ±15mA
6
1.4 4
f\
~
:;;
~
0
a.
1
:;
B-
4
;1
0
+85
8
6
I
0
+25
+50
Temperature
/
77
+75
±15
+100
14
16
18
Input Voltage (V)
OUTPUT VOLTAGE DRIFT
SYNC FREQUENCY VS INPUT CURRENT
AND OUTPUT VOLTAGE
~
GO
'"
l!!
'0
~ 15
l!!
>
:;
Q.
±30
12
10
l
o ..........,,......--.---r.....
o
V'
~
(Oel
INPUT CURRENT VS OUTPUT CURRENT
~
.L
~
4
-25
<
L
0
I
I
1
140
/
2
I
V
1/
:;
o
= +15V
±VOUT>
5'
90
~
(')
g
80
5i
~ 14
70
=.
3'
o
±45
10 (rnA)
VIN
Temperature (Oe)
CD
h"'PUT (10 = ±15mA)
60
:e
400
800
1200 1600
SYNC Frequency (kHz)
(Optional External Control)
THEORY OF OPERATION
The PWS725 and the PWS726 DC-to-DC converters
consist of a free-running oscillator, control and switch
driver circuitry, MOSFET switches, a transformer, a
bridge rectifier, and filter capacitors together in a 32-pin
DIP (0.900 inches nominal) package. The control circuitry c'onsists of current limiting, soft start, frequency
adjust, enable, and synchronization features. See Figure I.
84
In instances where several converters are used in a
system, beat frequencies developed between the converters are a potential source of low frequency noise in
the supply and ground paths. This noise may couple into
signal paths. See Figures 2 and 3 for connection of INPUT
SYNC pin. Converters can be synchronized and these beat
frequencies avoided. The unit with the highest natural
Burr-Brown Power Sources Handbook, Vol. 1
PW872S/726
OUTPUT SYNC (PWS72!;A, PWS726A Only)
r-------------- 29'----...,
I
I IS
..L.r---...... 0.22/1F
NOTES:
(1) Frequency Adjust is optional, with pins 19 and 20 left open. The normal switching frequency is 800kHz.
(2) Leave INPUT SYNC pin open if unused; limit stray capacitance on INPUT SYNC pin to less than 50pF.
(3) leave ENABLE pin open or connect to V1N if not used.
(4) Optional output filtering, with Lo
= 0,
limit Co:::; 1J1F. with Lo:':' 100pH,Iimit Co:': 101IF, See Performance Curves for Lo
(5) Optional input filtering. see Performance Curves for LIN = O.
(S) CAUTION: Do not connect pin 29 to low impedance loads (PWS725A, PWS72SA). See Figure 5.
FIGURE I. PWS725j726 Functional Diagram.
+7V to +18V
-7V to 'lev
'5V
330Cl
lW
Slave
PWS725
PWS726
PWS725/726
Signal n
15
-Vee
Keep Connection
Short
IS
IS
19'
Slave
16
19'
MC1472
or Equivalent
Peripheral
Driver
PWS725
PWS726
PWS7251726
·Units to be synchronized should
have a lower free-running
IS
frequency than the master unit.
Grounding FREO ADJ (pin 19)
19'
IS
16
lower free-running frequency than the
TTL signal. Grounding FREO ADJ (pin 19)
will shift the free-running
frequency to approximately
400kHz.
will shift the free-running frequency to
To Other
PWS725/726
Converters
19'
·Units to be synchronized should have a
approximately 400kHz.
"The TTL SYNC signal can have a
frequency range of 450kHz to 1.5MHz.
16
To Other
PWS725/726
Converters
FIGURE 2. Synchronization of Multiple PWS725s or
PWS726s from a Master Converter.
FIGURE 3. Synchronization of Multiple PWS725s or
PWS726s from an External TTL Signal.
frequency will determine the synchronized running
frequency, To avoid excess stray capacitance, the INPUT
SYNC pin should not be loaded with more than 50pF. If
unused, the INPUT SYNC must be left open,
Soft start circuitry protects the MOSFET switches during
start up. This is accomplished by holding the gate-tosource voltage of both MOSFET switches low until the
free-running oscillator is fully operational. In addition to
the soft start circuitry, input current sensing also protects
the MOSFET switches, This current limiting keeps the
FET switches operating in their safe operating area
under fault conditions or excessive loads, When either of
these conditions occur, the peak input current exceeds a
safe limit, The result is an approximate 5% duty cycle,
300/ols drive period to the MOSFET switches. This
protects the internal MOSFET switches as well as the
external load from any thermal damage. When the fault
or excessive load is removed, the converter resumes
normal operation. A delay period of approximately 50/ols
incorporated in the current sensing circuitry allows the
output filter capacitors to fully charge after a fault is
removed. This delay period corresponds to a filter
capacitance of no more than I/oiF at either of the output
pins. This provides full protection of the MOSFET
switches and also sufficiently filters the output ripple
voltage (see specification table), The current sensing
circuitry is designed to provide thermal protection for
the MOSFET switches over the operating temperature
range as well. The low thermal resistance of the package
(the = ID°C; W) ensures safe operation under rated
conditions. When these rated conditions are exceeded,
the unit will go into its shutdown mode.
An optional potentiometer can be connected between
the two FREQUENCY ADJUST pins to trim the oscilla-
Burr-Brown Power Sources Handbook, Vol. 1
85
PWS725 I 726
PWS725
PWS726
Monitor frequency with scope
15
.....- or frequency counter (use
\
19
'"
-
Frequency
Increase
low C probe)
\
positive and negative supplies. For example. an operational amplifier may draw 13mA from the positive
supply under full load while drawing only 3mA from the
negative supply. Under these conditions. the
PWS725j726 could supply power for up to five devices
(80mA -+- 16mA = 5). Thus, the PWS725 726 can power
more circuits than is at first apparent.
ISOLATION VOLTAGE RATINGS
n
----
n
+5V OE
-..-J L--J L - -
+4V 8E
1.2Sps Nominal
SYNC Signal
• For nominal 800kHz operation, leave pins 19 and 20 open
fiGURE 4. Frequency Adjustment Procedure.
tor operating frequency ± lOo/c (see Figure 4). Care
should be taken when trimming the frequency near the
low frequency range. If the frequency is trimmed too
low, the peak indJlctive currents in the primary will trip
the input current sensing circuitry to protect the MOSFET
switches from these peak inductive currents.
The ENABLE pin allows external control of output
power. When this pin is pulled low, output power is
disabled. Logic thresholds are TTL compatible. When
not used, the Enable input may be left open or tied to
VIS (pin 16).
Because a long-term test is impractical in a manufacturing
situation. the generally accepted practice is to perform a
production test at a higher voltage for some shorter
period of time. The relationship between actual test
conditions and the continuous derated maximum specification is an important one. Burr-Brown has chosen a
deliberately conservative one: VDCIIS'I = (2 X VACrms
(I)'"S"'>!', RAilS") + IOOOV for ten seconds. This choice
is appropriate for conditions where system transient
voltages are not well defined. * Where the real voltages
are well-defined or where the isolation voltage is not
continuous. the user may choose a less conservative
derating to establish a specification from the test voltage.
OUTPUT SYNC SIGNAL
To allow synchronization of an ISOl20 or ISOl21
isolation amplifier, the PWS725A and PWS726A have
an OUTPUT SYNC signal at pin 29. It should be
connected as shown in Figure 5 to keep capacitive
loading of pin 29 to a minimum.
OUTPUT CURRENT RATING
The total current which can be drawn from the PWS725
or PWS726 is a function of total power being drawn
from both outputs (see Functional Diagram). If one
output is not used, then maximum current can be drawn
from the other output. If both outputs are loaded, the
total current must be limited such that:
4
-f
29
20kO
PWS725A
PWS726A
of
150121
FIGURE 5. Synchronization with ISOl20 or ISOl21
Isolation Amplifier .
• Reference National Electrical Manufacturers Association (NEMA) Standards Parts ICS 1-109 and ICS I_III.
86
20 PF ±
IS0120 or
1"+1 + 11,-1 ::;80mA
It should be noted that many analog circuit functions do
not simultaneously draw full rated current from both the
Ext Osc
Connection
Burr-Brown Power Sources Handbook, Vol. 1
PWS740
BURR-BROWN®
PWS740
IElElI
Distributed Multichannel Isolated
DC-TO-DC CONVERTER
FEATURES
APPLICATIONS
•
•
•
•
•
• INDUSTRIAL MEASUREMENT AND CONTROL
• DATA ACQUISITION SYSTEMS
• TEST EQUIPMENT
ISOLATED·±7 TO ±20VDC OUTPUTS
BARRIER 100% TESTED AT 1500VAC. 60Hz
LOWEST POSSIBLE COST PER CHANNEL
MINIMUM PC BOARD SPACE
80% EFFICIENCY .(8 CHANNElS. RATED LOADS)
DESCRIPTION
The PWS740 is a multichannel, isolated DC-to-DC
converter with a l500V AC continuous isolation
rating. The outputs track the input voltage to the
converter over the range of 7 to 20VDC. The
converter's modular design, comprising three components, minimizes the cost of isolated multichannel
power for the user.
The PWS740-l is a high-frequency (400kHz nominal)
oscillator I driver, handling up to eight channels.
This part is a hybrid containing an oscillator and
two power FETs. It is supplieD in a TO-3 case to
provide the power dissipation necessary at full load.
Transformer impedance limits the maximum input
current to about 700mA at l5V input, well within the
unit's thermal limits. A TTL-compatible ENABLE
pin provides output shut-down if desired. A SYNC
pin allows synchronization of several PWS740-ls.
The PWS740-2 is trifilar-wound isolation transformer
using a ferrite core and is encapsulated in a plastic
package, allowing a higher isolation voltage rating.
The PWS740-3 is a high-speed rectifier bridge in a
plastic 8-pin mini-DIP package. One PWS740-2 and
one PWS740-3 are used per isolated channel.
-Yo Gnd1 +Vo
-Yo Gnd2 +Vo
"User Option
Functional Diagram
"Optional features; if unused. leave open.
Freq r-,.."-9---'
Adj
v+
F~""-""""""-----1f---+-------r::t--1-~::RIVEI ~~~re
O.3pF ?
O.3pF'?
.
'--_____..c-+'--_~-:.~~=-----------<~-------4--TO
Channels
International Airport Industrial Park • P.O. Box 11400 • TUClon. Arizona B5734 • Tat.: (602) 746-1111 • Twx: 9tIJ.952·111t • Clbla: BBRCORP • Tatax: 66-8491
PDS·7S8B
Burr-Brown Power Sources Handbook, Vol. 1
87
PWS740
SPECIFICATIONS
ELECTRICAL
NOTE: Y,N = 15V, output load on each of 8 channels = ±15mA, T. = +25'C unless specified otherwise.
PARAMETER
MIN
CONOITION
TYP
MAX
UNITS
1500
2121
VACrms
VDC
VACrms
011 pF
/lA
PWS740 SYSTEM
ISOLATION
Rated Voltage
Tesl Voltage
Impedance
Leakage Current
INPUT
Rated Voltage
Voltage Range
Current
Continuous, AC, SO/80Hz
Continuous, DC
103, minimum
Measured from pin 2 to pin 5 of the PWS740-2
240VACrms, 60Hz per channel
4000
10"113
0.5
1.5
15
20
7
Current Ripple
±30mA output load on 8 channels, Y,N = 15V
Rated output load on 8 channels, V'N = 15V
Full output load on 8 channels, VJN = 15V with
OUTPUT
Rated Voltage
Voltage at Min Load
Voltage Range
VouTvsTemp
Load Regulation
Tracking Regulation
Ripple Voltage
Noise Voltage
Current 1+loUTI + 1-louTI
±15mA output load on B channels
±lmAlchannel
±15mA output load on each channel
±15mA output load on each channel
±3mA < output load < ±30mA
VouTNIN
See Typical Performance Curves
See Theory of Operation
Each channel
71
520
300
1
filter on input
14.0
15.0
30
±7
16.0
±20
±0.05
0.25
1.2
TEMPERATURE
Specification
Operation
-25
-25
VDC
VDC
mA
mA
mA
VDC
VDC
VDC
VI'C
VlmA
VN
80
mA
+85
+85
'C
'C
470
20.0
Vs
0.8
kHz
V
V
V
PWS740-1 OSCILLATOR/DRIVER
Frequency
Supply
Enable
350
7.0
2.0
0
V,N =15V
Drivers on
Drivers off
400
15.0
PWS740-2 ISOLATION TRANSFORMER
Isolation Test Voltage
las, minimum
4000
1500
60s. minimum
Rated Isolation Voltage
Isolation Impedance
Isolation Leakage
Primary Inductance
Winding Ratio
Continuous
1500
10" 113
0.5
300
240VAC
400kHz, Pin 1 to Pin 5
Primary/Secondary
1.5
VACrms
VACrms
VACrms
011 pF
/lA
/lH
68176
PWS740-3 DIODE BRIDGE
Reverse Recovery
Reverse Breakdown
Reverse Current
Forward Voltage
1,= 1.= SOmA
1.= 100/lA
V.=40V
1,=100mA
40
55
1.5
1.6
ns
V
/lA
V
PIN CONFIGURATIONS
TO-3
Sync
Top Views
Pla8llc Mini-DIP
NC
AC
88
0®
NC
NC
AC
AC
y+
NC
To
Gnd
®®
VD
AC
00
To
PI ••llcDIP
PWS740-2
Burr-BrownPower Sources Handbook. Vol. 1
(Drawings Not to Scale)
PWS740
MECHANICAL
TO-3
Plastic DIP
~,!"~t[ 'Ijl
Pin 1
Top View
F~~23\ :l
®r+~R
'~716;~'
on package.
.745
.240
.038
.080
38.35
18.92
6.10
40' BASIC
.151
.980
Q
R
DIM
A
B,
B,
C,
C,
12.7 BASIC
30.12 BASIC
15.06 BASIC
1.186 BASIC
.593 BASIC
.400
.500
K
39.37
19.56
7.37
0.97
1.07
2.03
2.67
40' BASIC
.500 BASIC
10.16
3.64
24.89
.161
1.020
dl
JlD
12.70
4.09
25.91
MILLIMETERS
MIN
MAX
0.54
0.38
0.54
0.38
0.29
13.72
9.91
G
.200 BASIC
K
0.11
G
.400 BASIC
0.2t
13.72
,L-I
I
Seating
Plane
-I __ M
...\\--J
NOTE: Leads in true position
within 0.010" (0.25mm) R at MMC at
seating plane.
INCHES
MIN
MAX
0.64
0.49
0.64
.052
.044
~
"~
I , I 17
C[] U
L~~
NOTE: Leads in true position
within 0.010" (0.25mm) R at MMC al
seating plane.
MILLIMETERS
MIN
MAX
.770
.290
.042
.105
J.l
7~
Top V i ; ; : P: 1 'u
H-·-~Cl-
Pin numbers shown for reference
only. Numbers may not be marked
INCHES
MIN
MAX
1.510
1.550
P
C,
NOTE: leads in true position
within 0.010" (0.25mm) Rat MMC at
seating plane.
DIM
A
B
C
D
E
F
G
H
J
~,n,A,n
:!:l
-
Cl
1
--
I---A,-
.It
~H~
Bottom View
or
-A---
B,82
Identifier
o--L.
Q
Plastic Mini-DIP
r-A-j
DIM
A
A,
B
B,
C
D
F
G
H
J
K
L
M
N
16.26
12.45
16.26
13.21
11.18
9.91
8.64
5.08 BASIC
2.79
5.33
10.16 BASIC
P
INCHES
MIN
MAX
MILLIMETERS
MIN
MAX
.355
.400
.340
.385
.230
.290
.200
.250
.120
.200
.015
.023
.030
.070
.100 BASIC
.025
.050
.008
.015
.070
.150
9.03
10.16
8.65
9.80
5.85
7.38
5.09
6.36
3.05
5.09
0.38
0.59
0.76
1.78
2.54 BASIC
0.64
1.27
0.20
0.38
1.76
3.82
7.63 BASIC
0'
IS'
0.25
0.76
0.64
1.27
.300 BASIC
IS'
.030
.050
.0'
.010
.025
TYPICAL PERFORMANCE CURVES
VRIPPLE
5
20
5
0
5
1.4. AND a CHANNELS
25
I
L=15L
10 = ±15mA/channel
I
EFFICIENCY VS lOAD
LINE REGULATION
1 THROUGH a CHANNELS
VS CLOAD
100
20
aD
~
J
\
-H
"
....
0.2
0.4
CCOAO
15
l,..
u
0.6
-
0.8
60
.!!!
5
10
15
V,N (V)
1.0
20
--
~~
4 Channels
~
40
1 Channel_
20
0
I I
aChannels
~
c
10
E
w
r-
_
0
-----
---
·25
o
5
(PF)
10
~
15
VIN=t 5V
20
25
30
±loUT (mA)
Burr-Brown Power Sources Handbook, Vol. 1
89
PWS740
TYPICAL PERFORMANCE CURVES (CONT)
0
v
..........
iE
g
>
.
'"S
10 = ±15mA
VON = +15V
-5
a:
-10
-25
o
FREQUENCY ADJUSTMENT RANGE
LOAD REGULATION
I. 4 AND 8 CHANNELS
OUTPUT VOLTAGE DRIFT
'N
500
g
400
g
"
+50
""
f
/
0-
OJ..
300
C>
~"
[
~
V~
200
o
10'---+---~---r---r---+---i
+85
5~____________~____~
Temperature (OC)
o
10
15
±IOUT
20
25
I
100
See Functional Diagram
o
I
I
r
1
10
lk
100
10k lOOk
Frequency Adjustment Resistor (n)
30
(rnA)
PIN DESCRIPTIONS OF
PWS740-1 DRIVER
techniques, these lines could generate interference to
analog circuits. See the next section on PCB layout.
+VIN, RETURN, AND GND
These are the power supply pins. The ground connection,
RETURN, for the N-channel MOSFET sources is brought
out separately from the ground connection for the oscillator/driver chip. The waveform of the FETs' ground
return current (and also the current in the VDRIVE line) is
an 800kHz sa~tooth. A capacitor between +VJN and the
FET ground provides a bypass for the AC portion of this
current.
The power should never be instantaneously interrupted
to the PWS740 system (Le., a break in the line from V+,
either accidental or by means of a series switch). Normal
power-down of the V+ supply is not considered instantaneous. Should a rapid break in input power occur,
however, the transformers' voltage will rapidly increase
to maintain current flow. Such a voltage spike may
damage the PWS740-1. The bypass capacitors at the
+VIN pin of the PWS740-1 and the VDRIVE pins of the
transformers provide a path for the primary current if
power is interrupted; however, total protection requires
some type of bidirectional IA voltage clamping at the
+VJN pin. A low cost SA20A TransZorb@ from General
Semiconductor(ll or equivalent, which will clamp the
VIN pin between -.6V and +23V, is recommended.
ENABLE
To AND To
These pins are the drains of the N-ehannel MOSFET
switches which drive all the transformer primaries in
parallel. The signals on these pins are 400kHz complementary square waves with twice the amplitUde of the
voltage at +VJN. It is these lines that allow the power to
be distributed to the individual high voltage isolation
transformers. Without proper printed circuit board layout
(I) General Semiconductor Industries Inc .• 2001 W. 10th Place. Tempe AZ
8S2~1. 602-968-3101.
A high TTL logic level on this pin activates the MOSFET
driver circuitry. A low TTL level applied to the ENABLE
pin shuts down all drive to the transformers and the
output voltages go to zero (only the oscillator is unaffected). For continuous operation, the ENABLE pin can be
left open or tied to a voltage between +2V and V+.
SYNCHRONIZATION
The SYNC pin is used to synchronize up to eight
PWS740-1 oscillators. Synchronization is useful to prevent beat frequencies in the supply voltages. The SYNC
pins of two or more PWS740-ls are tied together to force
all units to the same frequency of oscillation. The
resultant frequency is slightly higher than that of the
highest unsynchronized unit. If this feature is not
required, leave the SYNC pin open. The SYNC pin is
sensitive to capacitance loading. ISOpF or less is recommended. Also external parasitic capacitive feedback
between either To and the SYNC pin can cause unstable
operation (commonly seen as jitter in the To outputs).
Keep SYNC connections and To lines as physically
isolated as possible. Avoid shorting the SYNC pin
directly to ground or supply potentials; otherwise, damage
may result.
Figure I shows a method for synchronizing a greater
number of PWS740-1 drivers. One unit is chosen as the
master. Its synchronization signal, buffered by a highspeed unity gain amplifier can synchronize up to 20 slave
units. Pin I of each slave unit must be grounded to
assure synchronization. Minimize capacitive coupling
between the buffered sync line and the outputs of the
drivers, especially at the end of long linY,s. Capacitance
to ground is not critical, but total stray capacitance
between the sync line and switching outputs should be
kept below SOpF. Wbere extreme line lengths are needed,
TransZoJ'b 18 General Semiconductor Industries Inc.
90
Burr-Brown Power Sources Handbook, Vol. 1
PWS740
such as between printed circuit boards, additional
OPA633 buffers may be added to keep drive impedance
at an acceptably low value. Because of temperatureinfluenced shifts in the switching levels, best operation of
this circuit will occur when differences in ambient temperatures between the PWS740-l drivers are minimized,
typically within a 35°C range.
If larger temperature gradients are likely to occur, the
user may wish to consider the synchronization method
shown in Figure 2. This circuit is driven from an external
TIL-compatible source such as a system clock or a
simple free-running oscillator constructed of TIL gates.
The output stage provides temperature compensation
over the rated temperature range of the PWS740. The
signal source frequency should be about 800kHz for
rated performance, but may range from 500kHz to
2MHz with slightly reduced performance. Precautions
with regard to circuit coupling and layout are the same
as for' the circuit of Figure 1. Repeaters using the
OPA633 may be used for long line lengths. Symmetry
and good high-frequency layout practice are important
in successful application of both of these synchronization
techniques.
FREQUENCY ADJUSTMENT
The FREQ AD] pin may be connected to an external
potentiometer to lower an unsynchronized PWS740-l
oscillator frequency. This may be useful if the frequency
of the PWS740-1 is too close to some other signal's
frequency in the system and beat interference is possible.
See Typical Performance Curves. Use of this pin is not
usually required; if not used, leave open for rated
performance.
THEORY OF OPERATION
EXTERNAL FILTER COMPONENTS
Filter components are necessary to reduce the input
ripple current and the output voltage noise. Without any
input filtering, the sawtooth currents in the FET switches
would flow in the V+ supply line. Since this AC current
can be as great as IA peak, voltage interference with
other components using this supply line would likely
occur. The input ripple current can be reduced to
approximately ImA peak with the addition of two
components-a bypass capacitor between the +VIN pin
and ground, and a series inductor in the VDR1VE line. A
IOj.lF tantalum capacitor is adequate for bypass. A
parallel 0.33j.1F ceramic capacitor will extend the bandwidth of the tantalum. Additional bypass capacitors
at each primary center-tap of the transformers are
recommended. In general, the higher the capacitance, the
lower the ripple, but the parasitic series inductance of the
bypass capacitors will eventually be the limiting factor.
The inductor value recommended is approximately 20j.lH.
Greater reduction in ripple current is achieved with
values up to 1001'H; then physical size may become a
concern. The inductor should be rated for at least 2A
(2) Pulse Engineering, PO Box 12235, San Diego CA 92112, 619·268-2400.
and its DC resistance should be less than 0.10. An
example of a low cost indicator is part number 51591
from Pulse Engineering(2l.
Output voltage filtering is achieved with a 0.33j.1F
capacitor connecting each VOUT pin of the diode bridge
to ground. Short leads and close placement of the
capacitors to the unit provide optimum high frequency
bypassing. The 800kHz output ripple should be below
5mVp-p. Higher frequency noise bursts are also present
at the outputs. They coincide with the switch times and
are approximately 20mV in amplitude. Inductance of
IOI'H or less in series with the output loads will significantly reduce the noise as seen by the loads.
PC BOARD LAYOUT CONSIDERATIONS
Multilayer printed circuit boards are recommended for
PWS740 systems. Two-layer b.oards are certainly possible
with satisfactory operation; however, three layers provide
greater density and better control of interference from
the FET switch signals. Should four-layer boards be
required for other circuitry, the use of separate layers for
power and ground planes, a layer for switching signals,
and a layer for analog signals would allow the most
straightforward layout for the PWS740 system. The
following discussion pertains to a three- or four-layer
board layout.
Critical consideration should go to minimizing electromagnetic radiation from the switching signal's lines, To
and To. You can identify the path of the switching
current by starting at the +VIN pin. The dynamic
component of the current is supplied primarily from the
bypass capacitor. The high frequency current flows
through the inductor and down the VDRIVE line, through
one side of the transformer windings, returning in the To
r-:-_ _ _ _ _ _ _ _ _ _ _8Channels
NC
L.._ _...... Typical at 25'C
2.511
~
-I
1-
200ns
4400kHz
Slave
740-1
.,.
111
8 Channels
6
:
8 Channels
FIGURE 1. Master/Slave Synchronization of Multiple
PWS740 Drivers.
Burr-Brown Power Sources Handbook, Vol. 1
91
PWS740
+V'N (7-20V)
+5V
3300
IW
2
TILSync
l11
2
Peripheral
Driver
(MC1472 or
Equivalent)
4
PWS74D-I
r-
4.0V'"
rI '
2.5V - - - '
Yr-'
8
-I
1-
200ns
6200
t
1I8W
t
2
PWS74D-I
1000
Other
PWS740s
.,.
NOTES:
Other
PWS740s
(I) See texllor frequency range; duty cycle = 5-75%. (2) Typicai waveform at 25'C. Active pull-up
initiates synchronization; pulse width is set by PWS740~ pull-down characteristics and is not affected by frequency of operation.
FIGURE 2. External Synchronization of Multiple PWS740 Drivers with TIL-Level Signals.
with the "on'; FET switch, and then back up through the
bypass capacitor. This current path defines a loop
antenna which transmits magnetic energy. The magnetic
field lines reinforce at the center of the loop, while the
field lines from opposite points of the loop oppose each
other outside the loop. Cancellation of magnetic radiation
occurs when the loop is collapsed to two tightly spaced
parallel line segments, each carrying the same current in
opposite directions. For this reason, the printed circuit
traces for both To connections should lay directly over a
power plane forming the VORIVE connection. This plane
need not extend much wider than To anq To. All of the
current in the plane will flow directly under the To traces
because this is the path of least inductance (and least
radiation).
Another potential problem with the To lines is electric
field radiation. Fortunately, the VORIVE plane is effective
at terminating most of th~ field lines because of its
proximity to these lines. Additional shielding can be
obtained by running ground trace(s) along the To lines,
which also facilitate minimum loop area connections for
the transformer's center tap bypass capacitors.
The connections between the secondary (output side) of
the transformer and the diode bridges should be kept as
short as possible. Unnecessary stray capacitance on these
lines could cause tuned circuit peaking to occur, resulting
in a slight increase of output voltage.
The PWS740 is intended for use with the ISOI02 isolation
buffer (see Figure 3). Place the PWS740-2 transformer on
the VOUT side of the buffer rather than on the C[
(bandwidth control) side to prevent possible pickup of
switch signal by the IS0102.
The best ground connection ties the ISOI02 output
analog common pin to the PWS740-1 ground pin with a
ground plane. This is where a four-layer board design
becomes convenient. The digital ground of the IS0102
can be connected to the ground plane or closer to the +V
92
supply. If possible, you should include the analog components that the IS0102 drives on the same board. For
example, if several IS0102s are mutliplexed to an analog( digital converter, then having all components sharing
the same ground plane will signficantly simplify ground
errors. Avoid connecting digital ground and the PWS740
ground together locally, leaving the ISOI02 analog
ground to be connected off of the board; the differential
voltage between analog and digital ground may become
too great.
OUTPUT CURRENT RATINGS
The PWS740-l driver contains "soft-start" driver circuitry
to protect the driver FETs and eliminate high inrush
currents during turn-on. Because the PWS740 can have
between one and eight channels connected, it was not
possible to provide a suitable internal current limit
within the driver. Instead, impedance-limiting protects
the driver and transformer from overload. This means
that the internal impedance of each PWS740-2 transformer is high enough that, when short-circuited at its
output, it limits the current drawn from the driver to a
safe value. In addition, the wire size and mass of the
transformer are large enough that the transformer does
not receive damage under continuous short-circuit conditions.
The PWS740-1 is capable of driving up to eight individual channels to their full current rating. The total
current which can be drawn from each isolation channel
is a function of total power being drawn from both DC
V+ and V- outputs. For example, if one output is not
used, then maximum current can be drawn from the
other output. In all cases, the maximum total current
that can be drawn from any individual channel is:
IIL+I + IlL-I :5 60mA
It should be noted that many analog circuit functions do
not simultaneously draw full rated current from both the
Burr-Brown Power Sources Handbook, Vol.}
PWS740
+
VORIVE
+15V
20/lH 10/lF ~ ~ O.3pF
PWS740-3
"?"
4
To
+V'N
T
t-------.
PWS740-1
To
+15V'
-15V'
Gndl
-----4
------1--1
System Uses:
1 Oscillator/ Driver
8 Transformers
8 Bridges
81S0102s
1 Multiplexer
Not.all components are shown.
13
16
Ao
Ao
VOUT
·Supplies ±15mA of isolated
supply current per channel.
~GND
Offset
.. Westeap DKM-l0 or equivalent
T
14
FIGURE 3. Low Cost Eight-Channel Isolation Amplifier Block with Channel-to-Channel Isolation.
poslttve and negative supplies. Thus. the PWS740 can
power more circuits per channel than is first apparent.
For example, an operational amplifier does not draw
maximum current from both supplies simultaneously. If
a circuit draws lOrnA from the positive supply and 3mA
from the negative supply, the PWS740 could power (60
+ 13) about four devices per channel.
ISOLATION VOLTAGE RATINGS
Because a long-term test is impractical in a manufacturing situation, the generally accepted practice is to
perform a production test at a higher voltage for some
shorter period of time. The relationship between actual
test conditions and the continuous derated maximum
specification is an important one. Burr-Brown has chosen
a deliberately conservative one: VTEST = (2 X VCONTINUOUS
RXrING) + 1000V. This choice is appropriate for conditions
where system transient voltages are not well definedP)
Where the real voltages are well-defined or where the
isolation voltage is not continuous, the user may choose
a less conservative derating to establish a specification
from the test voltage.
(3) Reference National Electrical Manufacturers Association (NEMA)
Standards part ICS 1-109 and ICSI-Ill.
Burr-Brown Power Sources Handbook, Vol.]
93
NOTES
94
Burr-Brown Power Sources Handbook, Vol. 1
NOTES
Burr-Brown Power Sources Handbook, Vol. 1
95
BURR-BROWN INTERNATIONAL SALES OFFICES &
SALES REPRESENTATIVES
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