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TPS53515: TPS53515 EN toggle

Genius 4840 points
Part Number: TPS53515

Our customer is using TPS53515 in folowing condition.

12V->5V(5A)

12V->3.3V(5A)

But they have 14000uF capcitor at both output.

So they enable device then detect OCP at soft start and then UVP latch off.

Please see attached 5Vout_NG.TIF

5Vout_NG.TIF

This part support pre-bias out so they try EN toggle for prevent startup fail.

Please check 5Vout.TIF (In this case RTRIP:69.9kohms) and 3.3Vout.TIF(In this case RTRIP:51.4kohms)

3.3Vout.TIF

5Vout.TIF

We would like to make an improvement more with toggle term shortly .

Please let us know min EN toggle term of this device?

regards,