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LMR23625: LMR23625CFQDDARQ1 EMI issue (Serial resistor with Cboot)

Ray Chang
Intellectual 1345 points
Part Number: LMR23625

Hi Team,

Customer used LMR23625-Q1 in their project, we met the EMI issue.

We found the solution that add the 10ohm resistor to serial with Cboot. It's helpful for EMI performance.

Do you have any concern to add 10ohm resistor serial with Cboot? What is the range you recommend?

  • 0
    TI__Genius 11040 points
    Hello,

    It should be okay to add a 10ohm resistor in series with Cboot. I would recommend no greater than 20-50Ohm.

    You are slowing down the rising edge of the switch node, so you will want to monitor the effects on the efficiency .

    Please let me know if you have any additional questions.

    Best Regards,
    Katelyn Wiggenhorn