开关电源的PSPICE仿真分析

173()Vol.17No.320029JOURNALOFZHENGZHOUINSTITUTEOFLIGHTINDUSTRY(NaturalScience)Sep.2002:2001-10-16:郑州轻工业学院科研基金资助项目(200115):王留芳(1969),女,河南省柘城县人,郑州轻工业学院讲师,硕士,主要从事电机及电器控制和电力电子技术应用研究.:1004-1478(2002)03-0020-03开关电源的PSPICE仿真分析王留芳,曹玲芝,杨存祥,孙玉胜(郑州轻工业学院信息与控制工程系,河南郑州450002):采用通用电路分析软件PSPICE,在保证模拟电路精度的情况下,建立实时电路仿真模型,进而对开关电源系统进行计算机实时仿真分析,对开关电源闭环控制系统动态响应过程及稳态过程的仿真分析表明,该方法可优化系统的设计方案,验证理论设计的可行性.:开关电源;仿真分析;电路模型;反激式:TP276:A0.,.,,,.,,.,CAD,.,.,,,,,,,.PSPICE.1PSPICE11PSPICEPSPICE,.:,,,(IC),.PSPICE,PSPICE,.,IC.:IC,,;.,,.3王留芳等:开关电源的PSPICE仿真分析2112DOUBLEENDFLYBACK,PSPICE.,Si9120,,.2.1.,.图1实时电路仿真模型1,E1,E2V(56);E3,;E4;X2,X4RS.X4,RSS1,,Q,,,M1,M2;,X4,RSS0,R,Q,,M1,M2,.X3.2DC/DCPSPICEPSPICE.:Vac=220V;Vom=5V,Vo2=24V,Vo3=+15V,Vo4=-15V,Vo5=+12V,Voh=+12V;fs=100kHz,Ton=4.5s;Np=66,Nom=2,No2=10,No3=No4=7,No5=Noh=6;M1,M2IRF840,Dx1,Dx2,D1~D5MUR.21图2开关电源启动过程仿真波形2..,1ms,..223.,.22()2002.图3系统稳态工作过程的仿真波形图3PSPICE.,,,,PSPICE.:[1]RaymondSRamshaw,DereckCSchuurmann.PSPICESimulationofPowerElectrioncsCircuits[M].London:ChapmanandHall,1997.[2]王留芳.电流型双端反激式开关电源的研究[D].南京:东南大学,1999.[3]AbrahamIPressman.SwitchingPowerSupplyDesign[M].NewYork:McGrawHill,1991.UsingPSPICEforsimulatedanalysisofswitchpowersupplyWANGLiufang,CAOLingzhi,YANGCunxiang,SUNYusheng(Dept.ofInformationandControllingEng.,ZhengzhouInst.ofLightInd.,Zhengzhou450002,China)Abstract:Withthecircuitanalysissoftware(PSPICE)andundertheconditionthatthemodelcircuitisprecise,therealtimecircuitsimulatedmodelisbuilt,thusconducttherealtimesimulatedanalysiswithcomputeroftheswitchpowersupplysystem.Throughthesimulatedanalysisofthedynamicreflectionprocessandstableprocessoftheswitchpowerclosedcircuitcontrolsystemtoshowthatthemethodcanimprovethesystemdesignprogrammeandverifythefeasibilityofthetheorydesign.Keywords:switchpowersupply;simulatiedanalysis;circuitmodel;flyback