Soft-Switched Asymmetric Half-Bridge Flyback-Forward Converter

The paper proposes an asymmetric half-bridge flyback-forward (AHBFF) isolated converter. Compared with the conventional AHB converter with a center-tapped rectifier, the converter has simpler transformer winding structure and better transformer window utilization. Compared with the AHB converter with a current doubler rectifier, the filter inductor has better utilization and simpler structure, which is favorable for lower output current applications. Experimental results based on an industry-stand 16th brick power module designed with the proposed converter shows that the converter has good performance and is compatible with the state-of-the-art active-clamp forward converter