Reference Designs

PMP6251 is a reference design for 150W LCD TV power by using the UCC28051 to construct PFC: UCC25600 to construct LED driver LLC converter: UCC24610 to construct SR circuit and UCC28610 to construct standby flyback converter. This driver provides 4 outputs including LED driver: 12V 3A: 5V 4A and 5V standby 1A; and has the capability to operate at 90~264Vac.The LED driver is done using multi-transformer topology which can improve efficiency and decrease component count. A thorough analysis of PFC: LLC: cascade QR flyback operation and performance along with design optimization guidelines are presented. Experimental results obtained on every general condition load are provided.