A High-Efficiency Multiple Output Flyback Converter Based on Variable Width Winding Planar Magnetics

This paper introduces the principle of DCM active clamp Flyback converter based on transformer leakage inductor resonance. Using transformer leakage inductor resonance can further reduce the volume and core loss of the system. The design method of variable width winding planar transformer is introduced in detail. The theory of variable width winding is proved. Advantages of variable width winding are compared with constant width winding. Finally, an active clamp Flyback converter with six outputs is designed to verify the feasibility of the variable width winding theory.