高频变压器次级串联开关电源的实现  

Implementation of Switch Mode Power Supply with In-series Secondary Windings of High-frequency Transformers

作　　者：田书欣[1] 钟莉娟[1] 杨喜军[1] 雷淮刚[2] 

机构地区：[1]上海交通大学,电气工程系,上海200240 [2]上海大学,自动化系,上海200072

出　　处：《电力电子技术》2011年第3期100-101,105,共3页Power Electronics

摘　　要：基于平面变压器、次级软开关技术和CA1524控制器,设计了满载效率为90%的单级推挽逆变-全桥整流的12 V/220 V DC/DC变换器单元,以及次级绕组两级串联方案,实现了输出功率1 kW以上,满载效率90%。给出了实测波形和不同输入电压和不同输出功率条件下的整机效率曲线。实验结果表明,谐振软开关次级多级串联开关电源各项指标良好,适合输入端为低电压大电流应用场合。Based on planar transformer,secondary soft-switching technology and CA1524 controller,12 V/220 V DC/DC converter is designed,which is made up of single-stage push-pull inversion-full bridge rectification with the efficiency of 90%.Scheme with inseries secondary windings of transformers is proposed to achieve output power of 1 kW and efficiency of 90%.The whole efficiency curves on the basis of different input voltage and different output power are shown.The experimental results indicate that switch mode power supply for multistage series secondary windings of transformers with resonant soft-switching has good indexes,which is suitable for application in situation of low input voltage and large input current.

关 键 词：开关电源 变压器 谐振软开关 推挽逆变 

分 类 号：TN86[电子电信—信息与通信工程]