UCC29910A: BUCK-BOOST PFC

Andy,

UCC29910 is a buck PFC, not buck-boost PFC. For buck-boost topology, you can consider UCD3138 digital controller.

Best,

Ning

Hi Ning Tan 

If I use the single switch buck-boost convert with PFC.
Please tell me what problems I will encounter.
Is it possible to use an existing controller?

Thanks

We don't have any analog controller can do buck-boost PFC in your example

Hi Ning Tan 

If I use UCD3138 digital controller in the single switch buck-boost converter with PFC.

Could it work?

And is there any limitation in this topology?

Thanks

It would. but it overkills. We have 4 switch buck boost solution for non-inverting Vout.

https://www.ti.com/tool/PMP21529

Hi Ning Tan 

Is there any controller work for 4(or 2) switch buck boost solution for non-inverting converter with PFC???

Thanks