基于NCP1351B的双管反激变换器设计  

Design of double switch flyback converter based on NCP1351B

作　　者：汤伟 方宇[1] 孟飞 葛晓星 杨家俊 翁苗 曹松银[1] TANG Wei;FANG Yu;MENG Fei;GE Xiaoxing;YANG Jiajun;WENG Miao;CAO Songyin(School of Information Engineering,Yangzhou University,Yangzhou 225127,China)

机构地区：[1]扬州大学信息工程学院,江苏扬州225127

出　　处：《扬州大学学报（自然科学版）》2021年第2期50-55,共6页Journal of Yangzhou University：Natural Science Edition

基　　金：国家自然科学基金资助项目(61873346);扬州市邗江区科技计划资助项目(HJM2019008)。

摘　　要：为了满足不同工作电压等级的需求,设计了一款基于NCP1351B芯片的高输入、多输出的双管反激式变换器.采用变频控制策略,根据负载变化调节开关频率可有效降低开关损耗.建立基于变频调制的多路输出反激变换器模型,分析双管反激电路的工作原理,在建立小信号模型的基础上给出补偿网络参数的设计方法,并运用MATLAB仿真验证系统的稳定性.通过制作一台多输出反激变换器实验样机进行验证测试,结果表明该设计是正确且有效的.In order to meet the requirements of different voltage levels,a high input and multi output dual switch flyback converter based on NCP1351 B chip is designed.Frequency conversion control strategy is adopted to adjust the switching frequency according to the load change to effectively reduce the switching loss.The model of multi output flyback converter based on frequency conversion modulation is established.By analyzing the working principle of dual switch flyback circuit,the design method of compensation network parameters is given based on the small signal model,and the stability of the system is verified by MATLAB simulation.An experimental prototype of multi output flyback converter is made,and the experimental results show that the design is correct and effective.

关 键 词：NCP1351B 双管反激 反激变换器 小信号建模 

分 类 号：TM461.3[电气工程—电器]