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LMR14020: What are the risks if Cboot is changed to 0.01uF? Thanks.

Part Number: LMR14020

What are the risks if Cboot is changed to 0.01uF? Thanks.

  • HI,

    If Cboot is too small, the high side UVLO might be trigger during the on period of the high side mosfet and increase load regulation.

    The efficiency might be affect too cause the Vgs on might be lower and increase the on resistance of high side mosfet.

    Be advice that the capacitance might change via  temperature and voltage on it. So please make sure to have a large margin. 

    Thanks!