I have experienced a failure with the TPS57060, where the device blew catastrophically when the input supply was momentarily interrupted (seconds).
The circuit has been reproduced a few times prior to this occurrence without any such failure.
The circuit is a +50V to +28V step-down configuration, designed using TI online design wizard, and the component values and tolerances were selected/checked as per TPS57060 datasheet. I suspect that this may be a known problem one may experience with Switch-mode PSUs??
My suspicion is that the input interruption reverted the circuit to start-up conditions while there was still significant charge on output capacitors, and the for some reason compromised the device. If this were true, I am yet to figure out how.
Is there someone here who may able to corroborate my theory or alternatively propose another explanation?