This reference design uses the UCC28713 primary-side regulated (PSR) flyback controller to generate a 12V/1.5A output from a univeral AC input. The valley switching of the UCC28713 allows this low-cost design to achieve an average efficiency over 87%; no load losses are less than 50mW. The PSR function eliminates the need for an optocoupler and TL431, greatly simplifying the circuit and reducing cost.
Features
- Primary side regulation eliminates the need for an optocoupler and TL431.
- Low cost
- High efficiency, over 87% average efficiency
- Low standby power consumption, under 50mW