The NXP TDF853x family is a series of ultra-efficient Class-D amplifiers that create a seamless audio experience in vehicles that support 5.5 V stop- start requirements.
Title: NXP Single Digital Loop Class D Amplifiers TDF853x - Leaflets Author: NXP Semiconductors Subject: Equipped with a single digital-feedback loop, the TDF853x Class-D amplifiers reduce system cost in automotive applications while delivering unparalleled sound quality.
NXP single digitalloop Class-D amplifiers TDF853x Class-D amplifiers for an A+ audio experience Equipped with a single digital-feedback loop, these ultra-performance Class-D amplifiers reduce system cost in automotive applications while delivering unparalleled sound quality. KEY FEATURES } Three, four, or five 2 or 4 load Class-D BTL channels } Interleaved power stages (optional) for improved EMC and reduced output-filter cost/complexity } Two BTL channels can combine to drive 1 } Feedback after low-pass filter for lower BOM cost and better audio quality TARGET APPLICATIONS } Automotive head-unit radio } Automotive sound systems } Operation voltage from 5.5 V to 18 V (optional 25 or 45) } Automotive-engine sound design } Digital input in TDM/I²S format to ensure easy board layout } Line-driver mode to drive an external amplifier via direct loudspeaker cable } Quality in accordance with AEC-Q100 } Diagnostic Startup diagnostic for AC and DC coupled loads Supply voltage feedback with 8-bit resolution Selectable clip detection The NXP TDF853x family is a series of ultra-efficient Class-D amplifiers that create a seamless audio experience in vehicles that support 5.5 V stop- start requirements. Ideally suited for use in active noise-cancellation systems, these amplifiers also fit head units and sound systems, and can be used to generate ambient and/or engine sounds in electric vehicles. The output power per channel varies with the supply voltage. The devices support up to 18 or 25 V, with 45 V to drive the loudspeaker. Selectable diagnostic information on DIAG pins IEEE 1194.1-compliant, board-level boundary scan DC output offset diagnostics The TDF8531 has three channels, the TDF8532 has four channels, and the TDF8534 has five channels. The TDF8536 has four 45 V channels. } Protection - Independent output current per channel with selectable thresholds Load dump protection (50 V) Over- and undervoltage protection Thermal fold-back and thermal protection HLQFP100 PACKAGE TDF853X CLASS-D AMPLIFIER REFERENCE DESIGN TDF853X BLOCK DIAGRAM 53x BLOCK DIAGRAM MOD1 MOD2 MOD3 GPIO1 DIAG1 DIAG2 DIAG3 ENABLE VDDA VDDE VDDP VDDD ADS1 ADS2 ADS3 SCL SDA MUTE_N SDI1 SDI2 SDI3 FS SCLK SYNC Microprocessor Diagnostic I2C Protections Supply Monitor Temp Monitor Supplies and References Charge Pump I2S/TDM Input Channel 1 of 5 Digital Loop Filter PWM Control PLL JTAG LLADC CPCP CPCM CP CP_DRV VDDP_DRV VDDP1 OUT1P1 OUT1P2 OUT1M1 OUT1M2 VSSP1 FB1P FB1M TDO TDI TMS TCK TRST_N VSSP VSSA VSSD HW SELECTION GUIDE Type Channel TDF8531HH 3 TDF8532HH 4 TDF8532BHH 4 TDF8534HH 5 TDF8534BHH 5 TDF8536HH 4 Supply 5.5 V 25 V 5.5 V 25 V 5.5 V 18 V 5.5 V 25 V 5.5 V 18 V 5.5 V 45 V Max output power 3 x 80 W 4 x 80 W 4x 70 W 5 x 80 W 5x 70 W 4 x 140 W THD+N / Noise Parallel Mode 0.005 % 26 µV Yes 0.02 % 26 µV Yes 0.005 % 42 µV 0.005 % 26 µV Yes 0.02 % 42 µV 0.005 % 48 µV Yes Idle Power Dissipation 2.1 W 2.8 W 2.8 W 3.5 W 3.5 W 3.0W Interleaved Mode Key Code Key Code Key Code Included www.nxp.com NXP and the NXP logo are trademarks of NXP B.V. All other product or service names are the property of their respective owners. © 2019 NXP B.V. Document Number: 9397 750 17613 REV 2Adobe PDF Library 15.0