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LM25007: EMC Filter for DC/DC switching controller

david moreliere
Prodigy 90 points

Part Number: LM25007

Hello During some EMC test I found perturbation on my Power supply due to the DC/DC of my board. I use a LM25007.

Is there some specific recommandation using the LM25007 regarding this problem.

  • 0
    TI__Mastermind 22302 points

    Hello David,
    It looks like your conducted EMI problems are at 330kHz, which I assume to be your switching frequency, as well its harmonics.
    Ultimately there could be many reasons depending on both your component selection and layout which we cannot know until you share.

    However this paper as well application note AN-2162 are good starting resources for managing EMI.

    Regards,

    Orlando