DCDC开关电源设计方案报告.doc

DC-DC开关电源设计[摘要]:伴随开关电源在计算机、通信、航空航天、仪器仪表及家用电器等方面广泛应用,大家对其需求量日益增加,而且对电源效率、体积、重量及可靠性等方面提出了更高要求。开关电源以其效率高、体积小、重量轻等优势在很多方面逐步替换了效率低、又笨又重线性电源。电力电子技术发展，尤其是大功率器件IGBT和MOSFET快速发展，将开关电源工作频率提升到相当高水平，使其含有高稳定性和高性价比等特征。开关电源技术关键用途之一是为信息产业服务。本文介绍了一款基于PWM技术DC-DC开关稳压电源。输出纹波小，电压稳定可靠.[关键词]：开关电源，DC-DC，AP1501A，高频变压器[Abstract]:Withtheswitchingpowersupplyinthecomputer,communications,aerospace,instrumentsandhouseholdappliancessuchasextensiveuseofthegrowingdemandofitspeople,andtheefficiencyofthepower,volume,weightandreliability,raisedmorehighdemand.Switchingpowersupplywithitshighefficiency,smallsizeandlightweightadvantagesofgraduallyreplacedinmanywaysinefficient,heavy,clunky,linearpowersupply.Thedevelopmentofpowerelectronicstechnology,particularlyhigh-powerIGBTandMOSFETdevicestherapiddevelopmentoftheswitchingpowersupplyoperatingfrequencyuptoveryhighlevelwhereithasahighstabilityandhighcostperformanceandothercharacteristics.Switchingpowersupplytechnologyisoneofthemainusesfortheinformationindustryservices.ThisarticledescribesatechniquebasedonthePWMDC-DCswitchingpowersupply.Outputripplevoltageisstableandreliable.[Keywords]:switchingpowersupply,DC-DC,AP1501A,highfrequencytransformer目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc"1序言PAGEREF_Toc\h1HYPERLINK\l"_Toc"1.1课题背景PAGEREF_Toc\h1HYPERLINK\l"_Toc"1.1.11开关电源三个关键发展阶段PAGEREF_Toc\h1HYPERLINK\l"_Toc"1.2开关电源技术亮点PAGEREF_Toc\h2HYPERLINK\l"_Toc"1.2.1功率半导体器件性能PAGEREF_Toc\h2HYPERLINK\l"_Toc"1.2.2开关电源功率密度PAGEREF_Toc\h2HYPERLINK\l"_Toc"1.3DC-DC发展概况PAGEREF_Toc\h3HYPERLINK\l"_Toc"1.3.1DC/DC转换器对工艺技术提出新要求PAGEREF_Toc\h3HYPERLINK\l"_Toc"1.3.2DC/DC转换器对电路设计新要求PAGEREF_Toc\h4HYPERLINK\l"_Toc"1.3.3DC/DC控制器向数字多相发展PAGEREF_Toc\h5HYPERLINK\l"_Toc"1.4本论文内容及研究意义PAGEREF_Toc\h6HYPERLINK\l"_Toc"2开关电源分类及关键应用PAGEREF_Toc\h6HYPERLINK\l"_Toc"2.1开关电源分类PAGEREF_Toc\h6HYPERLINK\l"_Toc"2.1.1常见开关电源型式PAGEREF_Toc\h6HYPERLINK\l"_Toc"2.1.2DC/DC变换PAGEREF_Toc\h7HYPERLINK\l"_Toc"2.2开关电源关键应用技术PAGEREF_Toc\h7HYPER