TPS1653: Output short, IC damage

Chen Alex1

Genius 4255 points

Part Number: TPS1653

hi sir

we use the TPS16530 To be the power protect, verify as below

I shorted the TPS16530 circuit output to the gorund, and IC was burn out.

Please help to figure out the problem is.

Refer to the sch. as below:

thanks

0 Amrit Jit 3 months ago

Hi Chen,

Do you have waveform?

Because of PCB path inductance and L1 inductor present at output, VOUT can go negative and violate the device -ve abs max.

You can probe the VOUT while doing short circuit to check that. I would recommend using Schottky diode like output.

Thanks
Amrit

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