Design considerations and performance evaluations of synchronous rectification in flyback converters
Design considerations and performance evaluations of synchronous rectification in flyback converters
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DOI：
10.1109/apec.1997.575641
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发表时间：
1997-02
期刊：
影响因子：
--
通讯作者：
Michael T. Zhang;M. Jovanovic;F. Lee
中科院分区：
文献类型：
--
作者：
Michael T. Zhang;M. Jovanovic;F. Lee
给出了带同步整流的反激式功率转换器的各种实现方式的设计权衡和性能比较。具体讨论了恒频连续导通模式、断续导通模式、变频DCM和零电压开关同步整流DCM反激变流器的优点和局限性。推导了与肖特基二极管实现相比，所讨论的同步整流方法的理论效率改进。最后，在一个实验样机上验证了理论结果，该样机是通用输入、离线、15V/36W反激式样机。
Design trade-offs and performance comparisons of various implementations of the flyback power converter with a synchronous rectifier are presented. Specifically, the merits and limitations of the constant-frequency (CF) continuous-conduction-mode, CF discontinuous-conduction-mode (DCM), variable-frequency DCM, and zero-voltage-switched DCM flyback power converters with synchronous rectifiers are discussed. The theoretical efficiency improvements of the discussed synchronous rectification approaches relative to Schottky diode implementations are derived. Finally, theoretical results are verified on an experimental, universal-input, offline, 15 V/36 W flyback prototype.