VIN 8V~54V to Vout 12V@3A Buck-Boost Controller Recommendation

Hello Delun,
Thanks for reaching out to us via e2e. 

Are you explicitly looking for a Buck-Boost topology (four switch design)?
Or would for example an asynchronous flyback design with a single FET also be an option? 

Thanks and regards,
Harry

HI Harry

Is there any risk in using buck-boost topology? I don’t need non-isolation, convenient material preparation and price are the priority.

BR,

Delun

Hello Delun,
There is no risk in using a Buck-Boost technology.
But - as you have confirmed - if price is a concern, a flyback or Sepic could be cheaper than a Buck-Boost with four FETs.
But you will need to find an appropriate transformer (to avoid a custom design) and a transfomer will probably require more space (height).

Best regards,
Harry

HI Harry,

For buck-boost, do you have any recommended models? The flyback transformer will be a purchasing pain point for me, and my mass production may not be able to support MOQ.

Thanks,

Delun