SLUAAL8 may   2023 BQ25790

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Root Cause
  6. 3RC Snubber
  7. 4TVS Diodes and Zener Diodes
  8. 5Summary
  9. 6References

1 Introduction

When hot-plugging a higher than 5 V USB adapter or multi-cell battery into an electronic device, it is not usual to see some voltage spikes and or ringing. If the IC pin that is connected to the input power or battery connector does not have enough voltage rating, the IC can be permanently damaged. This application note explains and identifies the root case of the voltage spikes and or ringing. In addition, this application explains how a properly sized resistor and series capacitor (RC) and or a diode can be used to prevent the device from being damaged.