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《直流稳压电源的研制》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。
1、直流稳压电源的研制摘要电源是电子设备的重要部件。随着现代电子设备应用范围越来越广范，对其电源的要求也越来越高。以电流型PWM(脉宽调制)控制器为核心的高频开关电源由于具有体积小、重量轻、效率高、线路简洁、可靠性高以及具有较强的自动均衡各路输出负载的能力等优点,非常适合用于中小功率的场合。本文阐述了一种基于UC3844PWM(脉宽调制)控制器的新型五路输出反激式开关电源电路的设计。主电路输入为220V交流电，输出为12V/0.2A、24V/1A、±15V/0.5A和5V/2A的5路直流电，其中5V/2A输出是重要的一路输出信号,它除了用于稳
2、压外,还为电机控制用的数字板电源提供5V电源。此外，本文还给出了变压器、漏感消除电路、启动电路以及电压电流反馈电路的设计过程。关键词：电流型PWM；UC3844；反激式开关电源-I-Developmentofdirectcurrentvoltage-stabilizedpowersupplyAbstractPowerisanimportantpartoftheelectronicequipment.Withmodernelectronicequipmentusedmorewidely,thedemandforitspowersourcei
3、shigherandhigher.Withcurrent-modePWM,lightweight,highefficiency,conciseline,highreliabilityandhasstrongabilityofautomaticequilibriumoutputload,isverysuitableforsmallandmedium-sizedpoweroccasion.ThispaperexpoundsakindofdesignbasedonUC3844PWM(pulsewidthmodulation)controller
4、ofnewfivewaysofoutputflybacktypeswitchpowersupplycircuit.Firstitstudiesthecharactersofflybackconverter,thenanalyzestheinternalprincipleofUC3844andgivesthedesignofmaincircuitandcontrolcircuit.Themaincircuit’sinputis220Valternatingcurrent,outputis12V/0.2A,24V/1A,±15V/0.5Aan
5、d5V/2Adirectcurrent,ofwhichthe5V/2Aoutputisanimportantwayforoutputsignal,itcannotonlystabilizevoltage,butalsoprovides5Vpowersupplyfordigitalboardpowersupply.KeyWords:Current-modePWM;UC3844;Flybacktypeswitchpowersupply-II-目录摘要...............................................
6、......................................................................................IAbstract.....................................................................................................................................II引言........................................
7、............................................................................................11绪论........................................................................................................................................21.1引言..................................
8、.........................................................................................21.2直流稳
