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TPS25947: PTS259474ARPWR does not auto-retry when power is overvoltage

Wendy Wang1
Genius 11250 points
Part Number: TPS25947

Hi team,

My customer, ABB test the samples PTPS259474LRPWR and PTS259474ARPWR. And they find that both of them do not auto-retry when power is overvoltage.

Besides, the mark on them are 2A7H and 2A2H, respectively. Which one is PTS259474ARPWR and which one is PTPS259474LRPWR?

Thanks a lot!

Best regards,

Wendy

  • +1
    TI__Guru 50265 points

    Hi Wendy,

    Thanks for reaching out! 

    Do you mean that input voltage is above overvoltage lockout threshold? When input voltage is above overvoltage lockout threshold then both auto-retry and latch-off variants will remain off  until voltage goes below overvoltage lockout threshold.

    To test which one is auto retry and which one is latch-off variant, set some current limit and apply overcurrent. The part will shutoff after timer due to overcurrent. Now auto retry variant will automatically start after 110ms  but latch-off variant will stay off.

    Regards

    Kunal Goel

  • +1 in reply to Kunal Goel
    TI__Guru 50265 points

    Hi Wendy,

    Closing thread here as we are following up on mail.

    Regards

    Kunal Goel