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PMP40871: Inductor voltage rating

Jef Daems
Prodigy 50 points
Part Number: PMP40871

Hi,

I noticed that the inductor used in this design has a maximum voltage rating of 20 Vdc, whereas the peak inductor voltage will be about 48 V in this design. Is this an oversight? Or does this parameter not apply to self-induced voltages?

Kind regards,

Jef

  • +1
    TI__Expert 5425 points

    Hi Jef,

    Thanks for pointing this out. Probably just an oversight, but in general I have never run into an issue with the inductor over voltaging for such low voltage levels (less than 100V or so). We tested the boards with no issues, but if you are concerned moving to an inductor with a high voltage rating is certainly okay.

    Thanks,

    Robert 

  • 0 in reply to Robert Taylor1
    Prodigy 50 points

    Hi Robert,

    Thanks for the quick response. I've never had problems with this either, but I never had to use an inductor in such a small package before. I'll double check with the suppliers to make sure.

    Jef