多路输出单端反激开关变换器控制系统设计  

Design of multiple output single-ended flyback switch converter control system

作　　者：皇金锋[1] 

机构地区：[1]陕西理工学院电气工程学院,陕西汉中723003

出　　处：《电源技术》2013年第7期1220-1222,共3页Chinese Journal of Power Sources

基　　金：陕西省教育厅科学研究计划资助项目(2010JS042)

摘　　要：研究一种采用单端反激变换器实现多路输出正负电压的DC-DC开关电源控制系统。根据单端反激开关变换器的基本工作原理,利用状态空间平均法建立了多路输出单端反激开关变换器的动态小信号数学模型,根据数学模型设计了补偿校正网络。利用SG3525做控制器组建了多路输出电源闭环控制系统。实验结果表明,设计的多路输出单端反激开关电源具有良好的电源调整率和负载调整率。A kind of single-ended flyback converter was designed to realize multi-channel output positive and negative voltage of the DC-DC switching power supply control system.According to the basic working principle of single-ended flyback switch converter,a multiplexed output single-ended flyback switch converter dynamic small signal mathematical model was built by state space average method.According to the mathematical model,compensation and correction network was designed.Using SG3525 as controller,a multiple output power supply closed loop control system was formed.The simulation experiment results show that the design of multi-channel output single-ended flyback switching power supply has good power regulation and load regulation.

关 键 词：多路输出 单端反激变换器 数学模型 SG3525 

分 类 号：TM13[电气工程—电工理论与新技术]