L010550 LSI LS7314, LS7315

User Manual: L010550 - LSI-LS7314, LSI-LS7315

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AC POWER CONTROLLERS

DESCRIPTION:

The LS7314 - LS7315 are MOS integrated circuits specifically

designed for appliance motor speed control, lighting control,

etc. I/Os (PLs) are provided for selecting/indicating from one to

ten power levels. The LS7315 is designed for pushbutton con-

trol. The LS7314 is designed for touch control.

(See Figures 4A and 4B)

INPUT/OUTPUT DESCRIPTION:

PL1 - PL10 (Pins 1 - 8, 15, 16)

Ten inputs/outputs for selecting ten output phase angles (pow-

er levels). When no power level is selected (such as after sys-

tem power-up) PL1 - PL10 all act as inputs. When a power lev-

el is selected by applying a logic zero at one of these inputs for

TH time (See Dynamic Characteristics), the output (TRIG) is

turned on at the phase angle selected and the PL input switch-

es status to become an output in order to drive a display, such

as an LED. It switches back to the input state when another PL

input is activated or when OFF is selected. (See Note 1)

OFF (Pin 10)

If TRIG is on, a logic 0 applied to the OFF input for TH time

turns TRIG output off and switches the selected PL back to the

input state. If TRIG is off, activating OFF leaves the circuit un-

affected. Following an OFF activation, TRIG can be turned on

by applying any PL input. (See Note 1)

SYNC (Pin 12)

Input for PLL reference frequency (50Hz/60Hz). All internal

clock frequencies are synchronized with the SYNC input.

CAP (Pin 11)

Input for component connection for the PLL filter capacitor.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

PL3

PL4

PL5

PL6

PL7

PL8

PL9

PL10

PL2

TRIG

Vss (+V)

SYNC

CAP

OFF

V

DD

(-V)

LSI

CONNECTION DIAGRAM - TOP VIEW

LS7314

FIGURE 1

PL1

7314-012703-1

APPLICATIONS:

• Universal and shaded-pole motor speed control for modern

appliance designs. Eliminates awkward mechanical switch

assemblies and multi-tapped motor windings. (See Fig. 4C)

• Multi-level light switches. (See Fig. 4D)

TRIG (Pin 13)

This output is designed to drive a triac in series with the

load and control its firing angle with respect to the AC line.

A 1ms output pulse width is provided to enable the triac to

fire even with inductive loads which cause significant phase

delays between voltage and current.

Vss (Pin 14)

Supply voltage positive terminal.

VDD (Pin 9)

Supply voltage negative terminal (ground).

NOTE 1: LS7315 has an internal pullup resistor on this in-

put and LS7314 does not. (See DC Electrical Character-

istics.)

LSI/CSI

LSI Computer Systems, Inc. 1235 Walt Whitman Road, Melville, NY 11747 (631) 271-0400 FAX (631) 271-0405

LS7314-7315

UL

®

A3800

Ø

T

W

FIGURE 2. TRIG PHASE ANGLE Ø

SYNC

TRIG

FEATURES:

• 10 I/Os to Select/Indicate up to ten Power Levels

• Inputs activated by Touch or Pushbutton Switch

• Output switches pure and precise AC Power to Load

• Operates with 50Hz/60Hz line frequency

• Rugged, latchup-free process technology

• +10V to +14V operation (Vss - VDD)

• LS7314, LS7315 (DIP);

LS7314-S, LS7315-S (SOIC) - See Figure 1

January 2003

7314-012703-2

*LS7314 & LS7315 **LS7315-51

(1) The TRIG Phase Angles shown in TABLE 1 are referenced

to the SYNC input. Ø values are mask programmable.

(2) The percentage of Full Power delivered to a resistive load

by the Triac Switch.

FIGURE 4C VALUE TABLE

CONDITION C2(µF)

(1), (3) 0.47

(1), (4) 0.33

(2), (3) 0.68

(2), (4) 0.47

(1) No LEDs (2) 5mA LEDs

(3) 115VAC, C2 = 200V (4) 220VAC, C2 = 400V

FIGURE 4C and 4D NOTES

NOTE 1: Value for 5mA LEDs.

NOTE 2: Use zener which produces 6.2V ±5% at 500µA or

less, i.e. P/N MZ4627.

NOTE 3: R6-C6 Snubber Network may be required for large

inductive loads.

NOTE 4: Tie all unused touch inputs together and return to Vss

through 100k Ohm, 1/4W resistor.

NOTE 5: The AC Mains Polarity shown is required for Touch

Control applications.

DRIVER

DRIVER

10

15

8

CONTROL

LOGIC DRIVER

DIGITAL

COMPARATOR

POWER

LEVEL

ROM

PHASE

ANGLE

POINTER

PHASE-LOCKED

LOOP

AND

CLOCK

GENERATOR

LEVEL 1

LEVEL 10

11

+

-

+

-

+

-

VSS

VDD

TRIG

CAP

OFF

PL1

PL10

13

FIGURE 3. LS7314-LS7315 BLOCK DIAGRAM

12

+

-

VSS

VDD

SYNC

TABLE 1. TRIG PHASE ANGLES, Ø (1)

PL Ø * % PWR (2) Ø ** %PWR (2)

1 43° 8 81° 40

2 55° 16 105° 67

3 68° 26 116° 77

4 81° 40 120° 80

5 95° 55 123° 83

6 108° 69 129° 87

7 122° 82 134° 90

8 134° 90 160° 99

9 147° 96 167° 99

10 160° 99 175° 99

R3

OFFPL1PL10

FIGURE 4A. PUSHBUTTON INTERFACE FOR LS7315

VDD

R3 = 10K , 1/4W

R8

R8

R7 R8

R8

R7 R8

R8

R7

Vss

TP TP TP

PL10 PL1 OFF

FIGURE 4B. TOUCH INTERFACE FOR LS7314

SEE NOTE 4

R7 = 1M to 5M , 1/4W (Select for Sensitivity)

R8 = 2.7M , 1/4W for 115VAC Mains

R8 = 4.7M , 1/4W for 220VAC Mains

M

P

N

L

MT2

G

MT1

C1

R1

R2

R9

C2

Z1

C5

D1

-

+

C4 C3

13 11

SYNC CAP

12

9

10158

14

Z2

R4

R5

VSS

OFF

PL1

PL10

LS7314 - LS7315

FIGURE 4C. MOTOR SPEED CONTROL APPLICATION

VDD

R6

C6

TRIG

OFF

PL1

PL10

AC

MAINS SEE NOTE 3

T

SEE NOTE 5

Use Fig. 4A or 4B

Interface Circuits

C1 = 0.15µF, 200V (400V) R1 = 82Ω

C2 = See Figure 4 Value Table R2 = 1.5MΩ

C3 = 0.047µF R4 = 560Ω (See Note 1)

C4 = 470pF R5 = 10kΩ

C5 = 220uF R6 = 1.8kΩ, 1W (2W)

C6 = 0.47µF, 200V (400V) R9 = 100Ω

L = 100µH (200µH) Z1 = 13V ± 5%, 1W

D1 = 1N4148 Z2 = 6.2V, 1/4W (See Note 2)

T = Q4004L4 (Q5004L4) Typical

All resistors 1/4W, all capacitors 25V unless otherwise specified.

Indicates component change for 220VAC Mains.

*

*

**

*

7314-012703-3

*

P

N

100µH

MT2

G

MT1

200V 13V

220µF

1N4148

-

+

470pF

13 11

SYNC CAP

12

9

10158

14

6.2V, 1/4W (See Note 2)

1K

10K

VSS

OFF

PL1

PL10

LS7314 - LS7315

FIGURE 4D. MULTI-LEVEL WALL SWITCH DIMMER APPLICATION

VDD

TRIG

OFF

PL1

PL10

115V

AC

MAINS

Q40044L4

0.15µF

INCANDESCENT

LAMP LOAD

2W 200V

0.68µF

.047µF

.047µF

82

Use Fig. 4A or Fig. 4B

Interface Circuits

1.5M

All Resistors 1/4W, all Capacitors 25V

unless otherwise specified.

Component Values are for use with

115VAC Mains and 2.5mA LEDs.

1W

Input Pull-up Resistance:

For LS7315

PL, OFF RIN 50 100 200 kΩ-

Output Voltage:

TRIG, HI VOH Vss - - V -

TRIG, LO VOL - Vss - 8 - V -

Output Current:

TRIG, Sink IOS 25 - - mA Vss = +12V

VOL = Vss - 4V

PL Source IOPL 5 - - mA VOPL= Vss - 1V

DYNAMIC CHARACTERISTICS:

SYMBOL MIN TYP MAX UNIT CONDITION

SYNC frequency fS40 - 70 Hz -

PL, OFF hold time TH50 - infinite ms 60Hz SYNC

TH60 - infinite ms 50Hz SYNC

TRIG Pulse Width Tw- 1.0 - ms 60Hz SYNC

Tw- 1.2 - ms 50Hz SYNC

MAXIMUM RATINGS:

PARAMETER SYMBOL VALUE UNIT

DC Supply Voltage Vss - VDD +20 V

Any Input Voltage VIN Vss - 20 to Vss + 0.5 V

Storage Temperature TSTG -65 to +150 °C

Operating Temperature TA0 to +80 °C

DC ELECTRICAL CHARACTERISTICS:

(TA = 25˚C, all voltages referenced to VDD)

SYMBOL MIN TYP MAX UNIT CONDITION

Supply Voltage VSS +10 +12 +14 V -

Supply Current IDD - 1.2 2 mA Vss = 12V, outputs off

Input Voltage:

SYNC, LO VISL 0 - 1/3Vss V -

SYNC, HI VISH 2/3Vss - Vss V -

All other inputs, LO VIL 0 - 1/4Vss V -

All other inputs, HI VIH 1/2Vss - Vss V -

Input Current:

SYNC Input IH- - 110 µA With Series 1.5MΩ

Resistor to 115VAC

7314-012703-4

The information included herein is believed to be

accurate and reliable. However, LSI Computer Systems,

Inc. assumes no responsibilities for inaccuracies, nor for

any infringements of patent rights of others which may

result from its use.