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LM25088-1 EMI emission issue

Xinming Wang
Prodigy 20 points
Other Parts Discussed in Thread: LM25088

Hi,

We have an issue that the LM25088-1 radiates a very strong EMI noise around 140MHz to 180MHz when input is from 9.0V to 32V.  Need to understand the root cause and a solution to fix it.  Shielding is not an option for current design.

Thanks in advance.