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Fault signal of TPS2553-1

Takahiro Nishizawa
Genius 5575 points
Other Parts Discussed in Thread: TPS2553-1

We have a question about TPS2553-1.

Does the timing of  fault signal output fluctuate by EMC condition?

Best regards,

Takahiro Nishizawa

  • 0
    TI__Mastermind 18031 points

    Hi,

    Sorry, I am not clear about your question.

    You worry about the fault signal being disturbed by external disturbance?

    I think it's according to the external signal intensity.

    It would be better to post your real case.

    For TI's policy, I will first click resolved button.

    If you have any other concern, contact me any time.

    If you think resolved, please help click'Issue is solved button'.

    Thanks.

  • 0 in reply to Ziv Zhang
    Genius 5575 points

    Thank you for your support!

    Our customer are concerned that variation of fault output timing has adverse effect on load.

    Does the timing of fault output change change by EMC condition?

    Our customer will conduct EMC test.

    Best regards,

    Takahiro Nishizawa

  • 0 in reply to Takahiro Nishizawa
    TI__Mastermind 18031 points

    Hi,

    For power switch, without switching operation, we normally not consider the EMC issue.

    The fault pin is open-drain, and is just a indicator for such as current limit and thermal.

    I think the EMC signal is not big enough to influence the fault.

    Fault has no influence on load.

    The Fault pin normally connect to MCU as an indicator which will trigger the MCU protection.

    Because we never consider the EMC issue before, it's better to have a test and then discuss the question.

    For TI's policy, I will first click resolved button.

    If you have any other concern, contact me any time.

    If you think resolved, please help click'Issue is solved button'.

    Thanks.

    Ziv