Hi,
I am into designing universal input, 480W power supply with CVCC characteristics for battery charging application.
I would be using front end PFC followed by half bridge LLC as power conversion scheme.
While selecting PFC controller, I am looking at UCC28056x. I noticed that ref design of 165W is given in the datasheet.
Can this controller be used to design the PFC stage for a 480W power supply with the DC-DC stage being a LLC ? Will an external Mos driver be required ?
How do we handle start up of the IC ? I don't see it has a high voltage start up pin.
PS - Please recommend a suitable, low cost, LLC controller with adaptive dead time control to go in this project.
Regards
Sanjay