Part Number: TPS54202
We have some prototype boards that have a TPS54202 power supply on them. The TPS4202 doesn't work on one of the boards and I'm still looking into the reason why. So far, the only problem I've found is that the EN line is pulled up to 24v with a 470k resistor. The voltage on the EN line measures 6.8v, which is just below the absolute max of 7v from the datasheet.
We were originally using the TPS563208, which has a built-in zener. We raised the VIN from 12v to 24 and had to remove the old power supply and go with the TPS54202 at the last minute. I didn't catch the change in EN pins between the two switchers. The datasheet for the TPS54202 doesn't mention having an internal clamp on that pin, so I'm wondering if I may have damaged it and that might be why it isn't starting up.