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TPS25200-Q1: FMD Inquiry

Andy Snawerdt
Intellectual 1780 points
Part Number: TPS25200-Q1

Hi Team,

My customer is looking to use our TPS25200-Q1 as protection for an off-board load, and would like to understand if any of the failure modes in our FMD report could result in a loss of the overvoltage clamp protection. One that concerns us is "Vout stuck on", I assume this would result in failure to protect from an overvoltage condition?

Regards,

Andy

  • 0
    TI__Guru 54840 points

    Hi Andy,

    I will check and get back on this.

    Regards

    Kunal Goel

  • +1 in reply to Kunal Goel
    TI__Guru 54840 points

    Hi Andy,

    The failure mode distribution estimation for comes from the combination of common
    failure modes listed in standards such as IEC 61508 and ISO 26262, the ratio of sub-circuit function size and
    complexity and from best engineering judgment.  So they are random and when we say that VOUT stuck on FMD is 5% that does not out of 100 times 5 would be VOUT stuck on.

    Also I agree that if failure mode is VOUT stuck on then overvoltage may not be clamped at output.

    Regards

    Kunal Goel