PEREE Phase-shift full-bridge ZVs PWM converter Circuit 0soso VD R L A C R &lg1o 12'3451678Io 17Power Electron cs i 17 Phase -shift full shift full -bridge ZVS PWM converter bridge ZVS PWM converter Circuit Circuit S1 S2 S3 S4 CS1 CS4 CS2 CS3 VD2 VD1 Lr L A B Ui u R C R + - S1 S3 S4 S2 uAB uLr iLr uT1 u R iVD1 iVD2 i L t 0 t 1 t 2 t 3t 4 t 5 t 6 t 7 t 8 t 9 t 0 t 9 t 8 t t t t t t t t t t t t O O O O O O O O O O O O