TPS74501 Ramping input supply causes an LDO to overshoot on start-up

Hello,

Please see the following app note.  I believe the issue is startup while the LDO is in dropout.  If this is the case then enabling the device using the enable pin after Vin has reached Vout + Vdrop will alleviate the issue.  You can use a separate enable signal on the enable pin or simply add an RC circuit from Vin to the enable pin.

https://www.ti.com/lit/an/sbva060/sbva060.pdf

Thanks,

- Stephen