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TPS40055: Question about KFF .

Part Number: TPS40055

Hi

My customer configured an external circuit for OCP operation using op-amp.
The way it works is to lower the KFF pin to low when it becomes OCP.
My customer asked if it works like the waveform below.

<Ch1(yelow):Vgs, Ch2(blue): Vds, Ch3(red): Ids>

And the magnification of the waveform is as follows.
If you look at the Vgs waveform in the displayed part, the ON time is long.
Can you check if this is right, too?

Thanks