FEDEVEL
Platform forum

Sniper2 , 12-17-2023, 07:35 PM

So i am designing a flyback that is meant to go from 42-60V input to 12-15V and 3.3-5V and another 3.3-5V isolated would be nice ,it does not need to be isolated. ( 100mA for all rails, .5A peak but i can use a few large capacitors to buffer that )
I am sort of having problems finding a proper transformer and i was wandering where can i look for some off the shelf ones
Should i make my own from cores? I suspect there are some out there since this is more ro less PoE input and some common rails at the output.

BTW should i go with a buck on the non insolated outputs? ( mostly considering for power efficiency but it is a extreme duty cycle anyway )

Robert Feranec , 12-18-2023, 07:40 AM

I would probably try to find a PoE reference design which would meet the spec I need and then used standard components based on its BOM.

Sniper2 , 12-18-2023, 09:26 AM

I am trying that but often tge bom item is a semi custom one but I can try to search for a few more references, then again I may have more wiggle room then I think

Sniper2 , 12-18-2023, 09:26 AM

Thx

Sniper2 , 12-21-2023, 02:52 PM

Found coilcraft ones