I'm trying to design a flyback AC-DC supply with an output of 3.3V upto 1A. I noticed some weird behavior. If I try to get a WEBENCH design from the UCC28722 product page on the TI website it says that minimum Vout is 5V. However, if I run WEBENCH from its own page I can design a 3.3V supply. Is the UCC28722 suitable for a 3.3V supply? If yes, would the attached reference design work? I'm simply asking since I'll need to get a custom transformer made for this (even for prototyping purposes) and if this controller is not suitable it would be wasted expense for me.