SLVAEE9A October   2019  – July 2021 TPS2065C , TPS2065D , TPS2069C , TPS2069D , TPS25221

 

  1.   Trademarks
  2. 1Introduction
  3. 2Root cause of False Fault Glitch
  4. 3Solution for the Fault Glitch
    1. 3.1 With RC Filter to Eliminate Fault Glitch as Start-Up
    2. 3.2 Validate the Influence of RC Filter to Normal Operation
  5. 4Summary
  6. 5Revision History

Summary

The RC filter workaround can help solve the power switch fault glitch issue during Vin startup. The workaround will cause a delay on normal fault condition. The delay duration depends on the RC value. Comparing with internal fault glitch time, 8-9 ms, the 1.55 ms delay time is relatively less impact and can be compromised.