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TPS55330: Dynamic Response

Part Number: TPS55330

Hi Team,

My customer now use TPS55330 and would like to optimize the Dynamic Response.

Vin=5.5V(very stable during the test)

Vout=8.5V

Iout=0.4A(max)

The first picture is test in Electronic load. The second one is test in normal work.

The green waveform are not stable...

Any advice to optimize?