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TPS92641: Low Power Shutdown with TPS92641

Part Number: TPS92641

ISSUE:

Low Power shutdown (UDIM pin L-->H) create delay , something like 4mS in the customer application.

We think the delay is related to the time COMP pin (100nF) to reach it's nominal level regulation  

Needs:

1) Reduce or avoid this delay

2) Is there a different/better way to turn  off  the device and freezing the state?

3)  Is there a different/better way to turn  ON   the device with fast speed up?

4) Is it possible to increase the output current with external device or buffer like half bridge driver + FETs??

Thanks

Best regards

Mauro