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TPS552882-Q1: SW1 short to SUPPLY question

Roy Chou1
Genius 16780 points
Part Number: TPS552882-Q1


Tool/software:

Hi Team,

From TPS552882-Q1 FuSa document, the IC internal boost MOSFETs will have potential damaged if SW1 short to SUPPLY. We would like to check the mechanism for the damage. May you help take an example for it? Thank you.

Regards,

Roy

  • 0
    TI__Guru 68145 points

    Hello Roy,

    The expert for this device is out of the office for the rest of the week. Please excuse the delay and expect an answer beginning of next week.

    Best regards,
    Brigitte

  • 0
    TI__Mastermind 28950 points

    Hi Roy,

    The straight damage example is over-voltage stress on Boost side MOSFETs, as the abs max voltage rating for Boost side FETs is 25V, if the battery voltage increases up to 36V, when device start switching, the Boost side MOSFETs will get damaged.

    BRs,

    Bryce