SLVAF30 February   2021 TPS55288 , TPS55288-Q1 , TPS552882 , TPS552882-Q1 , TPS61021A , TPS61022 , TPS61023 , TPS61088 , TPS61089 , TPS61178 , TPS61230A , TPS61235P , TPS61288 , TPS61378-Q1

 

  1.   Trademarks
  2. 1Introduction
  3. 2Observation in Bench Test
  4. 3Root Cause Analysis
  5. 4A Simple Solution
  6. 5Summary

5 Summary

The voltage spike in the boost converter output voltage is mainly caused by the ESL of the output capacitor. Setup of the probe and the oscilloscope also impact the output voltage ripple waveform. This application details the root cause of voltage spike and proposes ferrite bead reduce the spike if required.