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TPS7A47: TPS7A4701 broken - HV application

Part Number: TPS7A47

Dear Support,

Dear Support,

My customer uses our LDO from a 22V to generate a 20V@20mA +pic current (few amps)

These pic currents (few µs) occur every ~ms; so a total of 146µF has been added on the LDO output.

No specific over temperature has been detected (through IR camera).

And the 22Vin is coming from a DC/DC (no load dump).

I will share the schematic and layout in PM.

Any idea on where we should investigate?