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TPS4H160-Q1: EMC test problem

Part Number: TPS4H160-Q1

Hi team,

My customer use TPS4H160-Q1, however, they faced with some EMC problem.

Here are the CE test results, you can see the internal oscillator and charge pump switching frequency causes the fail of CISPR25. RE test is also failed, 1uF+0.1uF+0.01uF capacitors are added in the input pin, however, that doesn't improve the test results.

Could you help give some advice on this? Thanks.

Dongbao