PMP9638, Primary-Side Regulated Flyback with Universal Input (85 to 264Vac), Dual Output 12V/2A and 3.3V/0.5A

PMP9638, Primary-Side Regulated Flyback with Universal Input (85 to 264Vac), Dual Output 12V/2A and 3.3V/0.5A. The PMP9638 reference design uses the UCC28740 primary-side regulated (PSR) Flyback with resonant-Ring valley-switching controller to generate dual DC output 12V/2A and 3.3V/0.5A from a universal AC input. This design minimize switching loss in FET to provide high efficiency. The current regulation feature of the UCC28740 provides accurate current limit protection