I'd like to integrate a PoL DC/DC converter such as this one from Mornsun : KUB4812QB-10A
It will convert from a battery (48V) to an auxilary 12V bus on which will be connected a 12V Lead-Acid or Lithium-ion battery.
I've had trouble in the past with isolated DC/DC PoL modules where they couldn't run without a diode at the output lest it fries after a couple of ON/OFF cycles (current from the battery feeding back to the output and frying part of the output stage)
I've yet to have a definitive answer as to why this pre-biased operation is not allowed on these modules but the magic smoke escape was very repeatable.
Should I expect the same kind of behaviour from a non-isolated DC/DC such as the one from Mornsun? This point is not exactly explained in details in the datasheet...