Analysis, Design and Implementation of a New ZVS Interleaved Asymmetrical Half-Bridge Converter Using Synchronous Rectifier

作者：Taheri M; Milinnonfared J; Daryabak M

来源：International Review of Electrical Engineering, 2010, 5(4): 1381-1389.

• Active-Clamping Circuit
• Interleaved Converter
• Synchronous Rectifier
• Zero-Voltage Switching
• Asymmetrical Half-Bridge Converter

This paper presents an interleaved asymmetrical half-bridge zero-voltage-switching (ZVS) converter using synchronous rectifier The presented topology is composed of an asymmetrical half-bridge forward converter parallel with an asymmetrical half-bridge flyback converter Only two power switches are used in the primary side of transformers, and Operate asymmetrically under zero voltage switching to achieve high efficiency and low switch voltage stress in comparison with conventional and active clamp converters Because of interleaved operation of the converter, the output current ripple will he reduced The proposed converter can approximately share the total load current between two secondaries Therefore, the copper loss of the transformers can be decreased The synchronous rectifier switches are used at the secondaries to further reduce the conduction loss of the rectifier diodes The synchronous rectifier switches of the proposed converter also conduct under zero voltage switching condition with a continuous conduction mode Detailed analysis and design of this new converter are described A prototype converter has been implemented and experimental res

• 出版日期2010-8