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BQ24780S: REGN Capacitance

Diego Lewis
Intellectual 1540 points
Part Number: BQ24780S

Hi Team,

My customer is asking if there is a reason we are suggesting an 2.2uF 0603 capacitor for the REGN pin besides the derating. Any concerns with using an 0402 with an effective capacitance of 2.2uF?

Regards, Diego Lewis

  • 0
    TI__Mastermind 25800 points

    Hey Diego,

    Its also related to the power handling capability. REGN is used, among other things, as the bias supply to the gate drivers, to here is a decent amount of instantaneous current delivered by the output cap for REGN to the gate drivers and ultimately the external NMOS gates.

    Regards,

    Joel H