LM5160: flybuck converter with secondary regulation.

Hello team,

My customer is requesting isolated buck solution for 48Vin 12Vout 1A load, efficiency target is > 87% and secondary regulation is required because of accurate dynamic load regulation spec.

I tried to find out the LM5160 but according to webench come out the efficiency 82% can't meet 87% target, so do you have any other better device can suggest? and also how to design flybuck as secondary regulation? can you provide the reference schematic?

Thanks a lot.

Martin

Webench_LM5160, 48V to 12V_1A with Flybuck..pptx