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密级公开学号200740513149衡水学院毕业论文(设计)正激式开关稳压电源设计论文作者指导教师专业本科专科年级论文提交日期论文答辩日期:::::::张志生侯晓云电子信息工程本科2007级2011年5月18日2011年6月01日毕业论文(设计)学术承诺本人郑重承诺:所呈交的毕业论文是本人在导师指导下进行的研究工作及取得的研究成果。除了文中特别加以标注和致谢的地方外,论文中不存在抄袭情况,论文中不包含其他人已经发表的研究成果,也不包含他人或其他教学机构取得的研究成果。作者签名:日期:毕业论文(设计)使用授权的说明本人了解并遵守衡水学院有关保留、使用毕业论文的规定。即:学校有权保留或向有关部门送交毕业论文的原件或复印件,允许论文被查阅和借阅;学校可以公开论文的全部或部分内容,可以采用影印、缩印或其他复制手段保存论文及相关资料。作者签名:指导教师签名:日期:日期:2007级电子信息工程专业毕业论文-I-论文题目:正激式开关稳压电源设计摘要:电源设备用来实现电能变换和功率传递,是各种电子设备正常工作的基础,而高频高效小型开关电源又是开关电源发展的必然趋势,在通信、军事装备、交通设施、仪器仪表、工业设备、家用电器等领域得到了越来越广泛的应用。在深入研究分析各种开关电源原理和特点的基础上,根据项目的指标要求,论文设计了一种单端正激式高频多路输出开关电源。该开关电源的特点是以单端正激变换器为主拓扑,以TOP244YN和高频变压器为核心,采用EMI滤波器、MOSFET、输出滤波电路、采样反馈通道等主要元器件和电路模块,实现了稳定输出。论文所设计的开关电源输入为市电110V/220V交流,两路输出电压分别为+5V和15V直流电压,开关频率为132KHz。论文采用面积乘积法(AP),确定了高频变压器的原副边以及铁芯材料的选择,设计了输出电路、系统补偿器以及启动电路和EMI滤波电路。关键词:高频开关电源;单端正激式;变压器;EMI张志生:正激式开关稳压电源设计-II-Title:SwitchingPowerSupplyDesignAbstract:Powerequipmentusedtoachievethepowerconversionandpowertransmission,whichisbasictothevariouselectronicdevicesworkingnormally,andthehighfrequencyandhighefficientsmallswitchingpowersupplyisaninevitabledevelopmenttrend,whichisusedmoreandmoreincommunications,militaryequipment,transportfacilities,instrumentation,industrialequipment,householdappliancesandareas.Thispaperdesignedasingle-terminalforwardhigh-frequencymulti-outputswitchingpowersupplyundertheIn-depthresearchandanalysisofvariousprinciples,andtherequirementsofthecharacteristicsofswitchingpowersupplybasingontheindicatorsoftheproject.Thecharacteristicsofthisswitchingpowersupplyisthat:itachievedfourstableoutputwiththesingle-terminalasthemaintopology,withTOP244YNandhigh-frequencytransformerasthecore,usingEMIfilters,MOSFET,theoutputfiltercircuit,samplingfeedbackchannelandothermajorcomponentsandcircuitmodules.SwitchingPowerSupplyis110VACor220VACasthemaininput,twooutputvoltagesare+5Vand15VDCvoltage,andtheswitchingfrequencyis132KHz.Withanareaproductmethod(AP),weidentifythechoiceoftheoriginalorassistantsideofthehigh-frequencytransformer,designtheoutputcircuit,thecompensatorsystem,thestartcircuitandEMIfilteringcircuits.Keywords:high-frequencyswitchingpowersupply;single-terminalforward;transformers;EMI2007级电子信息工程专业毕业论文-III-目录摘要.........................................................................................................................................IAbstract....................................................................................................................................II1绪论.......................................................................................................................................11.1引言................................................................................................................................11.2国内外开关电源的现状与发展方向.........................................................................11.2.1国内外开关电源的现状.........................................................................................11.2.2开关电源的发展方向.............................................................................................11.3论文的主要工作...........................................................................................................22开关电源原理及设计方法....................................................................................................32.1开关电源的基本结构与原理...........................................................................................32.1.1开关电源的基本结构................................................................................................32.1.2开关电源的基本工作原理........................................................................................32.2Forward正激式变换电路................................................................................................42.2.1主电路拓扑和控制方式............................................................................................42.2.2电流连续时Forward变换器的工作原理.................................................................62.3开关电源设计流程...........................................................................................................82.4论文设计电源的技术指标...............................................................................................93高频变压器的设计...............................................................................................................103.1变压器的设计过程.........................................................................................................103.2变压器绕制说明及绕制原理图.....................................................................................104控制单元的设计...................................................................................................................124.1TOP244YN芯片特点.....................................................................................................134.2引脚功能描述.................................................................................................................134.3控制单元电路原理图....................................................................................................145整流滤波输出和反馈电路的设计......................................
本文标题:正激开关电源设计
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