Automotive 4-Channel Class D Amplifier Reference Design for Head Unit
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Key Document


The TIDA-00573 reference design provides a Class D based amplifier solution that allows it to be evaluated in the form factor of a typical Class AB amplifier.  The design is optimized to mitigate thermals associated with audio amplifiers and to minimize switching noises associated with Class D amplifiers.  This design is comprised of two parts.  The 1st highlights the audio amplifier module while the 2nd highlights the circuitry needed to incorporate it into a base board.  The pair of boards allows stand-alone performance testing of the design.

  • Able to withstand load-dump conditions
  • Size/Space optimized design
  • CISPR-25 tested EMI
  • Able to withstand Start/Stop operation down to 5.6V

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Schematic/Block Diagram

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Design Guide

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Design Files

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TI Devices (2)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
TAS5404-Q1  Automotive, 26-W, 4-ch, 6- to 18-V analog SE input Class-D audio amplifier w/ I2C diag & load dump  Audio amplifiers  Sample & Buy View Design Kits & Evaluation Modules
TL760M33-Q1  Automotive 500-mA, 26-V, high-accuracy, low-dropout voltage regulator  Power management  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
TAS5404-Q1 Download
TL760M33-Q1 Download -
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Technical documentation

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User guide (1)
Title Type Size (KB) Date
PDF 3598 04 Dec 2015
Design files (7)
Title Type Size (KB) Date
ZIP 2608 07 Jan 2016
ZIP 1569 07 Jan 2016
ZIP 1581 07 Jan 2016
ZIP 2600 07 Jan 2016
ZIP 287 07 Jan 2016
ZIP 210 07 Jan 2016
ZIP 748 07 Jan 2016

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