PMP9640, 310W PSU Using Transition Mode Bridgeless PFC and LLC-SRC - Reference Design

PMP9640, 310W PSU Using Transition Mode Bridgeless PFC and LLC-SRC - Reference Design. High efficiency, high power factor and reliable power supply are the main focus of the PMP9640 design for motor driver applications. Low cost analog transition mode PFC controller UCC28051 has been used for bridgeless PFC as the first conversion stage of the PMP9640. LLC series resonant converter (SRC) with UCC25600 is applied as the second stage of the PMP9640. In addition, a high-side buck converter with UCC28710 is applied here as the bias supply. In this design bridgeless PFC efficiency can go up to 98.5%