This power supply reference design consists of a synchronous-rectification LLC isolated half-bridge associated to a CCM PFC stage. It needs 14V-primary (100mA max.) and 7V-secondary (50mA max.) as bias supply. Thanks to low-profile construction (20mm height), it can be employed in LCD screen applications, as well in high-efficiency and low dissipation cases thanks to efficiency values of 98% on PFC (high line) and 96% (97% peak) on LLC stage.
Features
- High efficiency on both stages: 96% (low line), 98% (high line) on PFC stage and 96.5% efficiency (at nominal 385Vin) on LLC stage
- A single thermal-shunt simplifies the interface with housing
- Low profile: 20mm, small form factor 142mm x 157mm