Other Parts Discussed in Thread: TPS65320-Q1
Dears
Currently we are using one TI power IC(TPS65320-Q1) in our product, But we are facing a problem in our degin:
This power regulator output 3V3 & 1V8 rail, and there is one power 1V0 (high load(Up to 7.5A on limited case)) is converted from 3V3, When power down our system, There is a spike(around 300mV) appear on 3V3 output regulation as attached picture below,
We suspect it is due to the power IC transient perfermance is not very good, We have tried to add more capacitors (E.G,Add PC15 = 47uF) on output but it doesn't work. our design please refer to below:
We want to fix the spike if any good idea or suggestion please advise,
Any questions please let me know, Thanks!