SLAAEU8 June   2026 TAS5805M

 

  1.   1
  2.   Abstract
  3. 1Troubleshooting Overcurrent Protection Events
  4. 2Inductor Selection
    1. 2.1 Startup Current
    2. 2.2 Peak Current at Maximum Output Power
    3. 2.3 Maximum Current Under Burst Signal
  5. 3Parameter Configuration
    1. 3.1 Overcurrent Limit (Cycle-By-Cycle)
    2. 3.2 DRC/AGL Configuration
    3. 3.3 Clipper Configuration
  6. 4Summary
  7. 5References

Abstract

This document was translated from a simplified Chinese source. (ZHCAG74)

TI Class-D audio amplifier ICs are widely used in consumer electronics and automotive applications due to their high performance and high efficiency. Among them, the TAS58xx series is widely used in consumer electronics products such as TVs, speakers, soundbars, and party boxes. One of the most common issues encountered by engineers when using the TAS58xx series is overcurrent protection. The TAS58xx series amplifiers feature fast overcurrent shutdown capability. By detecting the MOSFET peak current, the amplifier can achieve shutdown within 100 ns when a severe short-circuit event occurs, thereby protecting the amplifier IC from damage. An overcurrent shutdown event cannot be automatically recovered. After an overcurrent shutdown event occurs, the user must restart the device to resume audio playback. Therefore, during normal signal playback, frequent triggering of overcurrent shutdown should be avoided.

Overcurrent shutdown events are highly correlated with inductor selection and amplifier configuration. This article briefly introduces several considerations for avoiding overcurrent shutdown during normal operation in system design. The discussion mainly focuses on two aspects: inductor selection in hardware design, and CBC/DRC/AGL/Clipper configuration in software.