DI-30, TOP249YN, 180W PC Main SFX Supply

DI-30, Reference Design for TOP249YN, 180W PC Main SFX Supply. Passive power factor correction is implemented using inductors LPFC1 and LPFC2.Transistors Q4, Q6, R1, R2, R3, R5, and R6 form an active capacitor (C2, C3) balancing circuit, Operating only as needed to minimize zero-load power consumption