SLVUDQ1 May   2026

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   5
  6. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  7. 2Hardware
    1. 2.1  AC-MB Settings
      1. 2.1.1 Audio Serial Interface Settings
      2. 2.1.2 USB Control
      3. 2.1.3 External Control
    2. 2.2  AC-MB Power Supply
    3. 2.3  Default Jumper Settings on TAS2573EVM
    4. 2.4  I2C Target Address Selection
    5. 2.5  IOVDD and VDD Power Supply Options on EVM
    6. 2.6  VBAT Power Supply for TAS2573 on EVM
      1. 2.6.1 VBAT 2S EVM Hardware Configuration
      2. 2.6.2 VBAT 3S (External PVDD) EVM Hardware Configuration
    7. 2.7  Speaker Outputs
    8. 2.8  1-Channel Configuration
    9. 2.9  4-Channel Configuration
    10. 2.10 4-Wire Measurement of Load
    11. 2.11 Jumper Settings Quick Reference
  8. 3Hardware Design Files
    1. 3.1 Schematics
    2. 3.2 PCB Layouts
    3. 3.3 Bill of Materials (BOM)
  9. 4Additional Information
    1. 4.1 Known Issues
    2. 4.2 Troubleshooting
    3.     Trademarks

1.3 Specification

The TAS2573 is a digital input Class-D audio amplifier designed for delivering best battery life for real use cases of music playback and voice calls. The integrated boost operation is flexible so that TAS2573 can be implemented in 1S, 2S and 3S battery applications. TAS2573EVM showcases the 1S battery broadly used in mobile and industrial applications.

TAS2573EVM Application Diagram for 1S Battery SystemFigure 1-1 Application Diagram for 1S Battery System

For 2S battery applications, the boost inductor can be supplied by a higher supply from 4.5V to 9V. VBAT pin must still be supplied by a voltage from 2.5V to 5.5V.

TAS2573EVM Application Diagram for 2S Battery SystemFigure 1-2 Application Diagram for 2S Battery System

In a 3S battery application, the integrated boost can be bypassed, and an external power rail up to 14V can supply PVDD directly. The boost inductor is not required in this case and SW pins are left open. VBAT pin must still be supplied by a voltage from 2.5V to 5.5V.

TAS2573EVM Application Diagram for 3S Battery SystemFigure 1-3 Application Diagram for 3S Battery System