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TPS62160-Q1: Output issue

Part Number: TPS62160-Q1
Other Parts Discussed in Thread: TPS62150A

Hi Team:

Customer use TPS62160Q1 in ADAS system.

The application is 5V input and 3.3V output. But they do an experiment that, change the input to 3V, which will make the input lower than output. Then the output will change to 3V also. But after some time, the output will also change.

Then, the output will be like below:

Yellow line is the input from the power supply.

Green line is the input from the TPS62160Q1.

And the Blue line is the output of the TPS62160Q1.

Could you help me to check whether it's normal?

Any method to solve it?