This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TPS40170: OCP Design Issue

Part Number: TPS40170

We face the OCP design point issue with buck controller.

We found the measured point of OCP is NOT meeting to what we calculated. Could you advie what the problem is! Very thanks. e

1234.Presentation1.pptxVery Thanks.

Regards,

Brian

  • Hi Brian,

    The BSC066 low-side FET has ~7mOhm Rds(on) at Vgs = 8V (the applicable gate drive voltage of the TPS40170). Maybe you can measure the voltage drop of the low-side FET. The programmed voltage drop at current limit is 9uA x 14.7k = 132mV.

    Regards,
    Tim