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LMZ31707: Hotswap application

TAN SB
Intellectual 400 points
Part Number: LMZ31707

Hi,

I am using the LMZ31707 to power pluggbale QSFP+ modules in the hotswap environment, How can I prevent the controller from blowing up in case a bad module is plugged in?

Thanks,

SB

  • 0
    TI__Guru 50120 points

    Hi Tan,

    Perhaps an efuse with an aluminum electrolytic would help. In the case where you are hotplugging/hotswap there may be voltage transient on the input power path that can cause voltage spikes on the VIN pin. The aluminum electrolytic should help dampen the input line by keep the input voltage stable. However this is not a complete protection solution.

    It may be more appropriate to post a question to the ESD/TVS protection group on this E2E forum for more information on their device which is commonly used in hotswap environments.

    Regards,

    Jimmy

  • 0 in reply to Jimmy Hua
    Intellectual 400 points

    Hi Jimmy,

    Thanks for your reply.

    BTW, I can't find the ESD/TVS forum group under the FORUMS tab.

    Thanks,

    SB