The UCC28060 is an older part and has replaced by the UCC28063 or the UCC28063A in most applications.
The attached schematic shows how to power VCC from the transformer auxiliary winding.
You can find this schematic as part …
The UCC29910A has been designed for the pfc stage in AC adapter type applications where the input voltage range is 90Vac to 264Vac and the output voltage is 84Vdc. It is most likely unsuitable for LED driver type applications since:
It does not provide…