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UCC25660: VCCP cap sizing and simplis model

Jacob Wyrick
Expert 8365 points
Part Number: UCC25660

Tool/software:

Hi team - Two questions:

- Is there a reason why such large bypass capacitor is needed on the VCCP pin? 

- When will the simplis model be available?

Thanks,

Jacob

  • 0
    TI__Intellectual 2510 points

    Hi Jacob,

    High value of capacitor is recommended at VCCP pin of UCC25660 to help VCCP voltage not fall below the VCCStopSwitching, when the controller powered using the bias winding of LLC transformer, and the device enters burst mode. It also helps during HV startup.

    I was told that the SIMPLIS model will be available in a month.

    Regards

    Hemanth