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1、第18页共18页摘要稳压电源是各种电子的动力源，被人称为电路的心脏，所有用电设备，包括电子仪器仪表，家用电器等对供电电压都有一定的要求。至于精密的电子仪器，对供电电压的要求更为严格。所谓的DC/DC直流稳压是指电压或电流的变化小到可允许的程度，并不是绝对的不变。目前，随着单片开关电源集成电源的应用，开关电源正朝着短、小、轻、薄的方向发展。单片开关电源自20世纪90年代中期问世以来便显示出来强大的生命力，它作为一项颇具发展和影响力的新产品，引起了国内外电源界的普遍重视。尤其是最近两年来，国外一些著名的芯
2、片厂家又竞相推出了一大批单片开关电源集成电路，更为新型开关电源的推广及奠定了良好的基础。单片开关电源具有集成度高、高性价化、最简外围电路，最佳性能等指标，现已成为开发中小功率开关电源、精密开关电源及电源模块的优选集成电路。关键词：稳压电源；DC/DC直流稳压电源；单片开关电源AbstractPowersupplyisapowersourceforavarietyofelectronic,hasbeencalledtheheartofthecircuit,allelectricalequipment,i
3、ncludingelectronicinstrumentation,andhouseholdappliancestothesupplyvoltagehascertainrequirements.Thesophisticatedelectronicequipment,thesupplyvoltagerequirementsmorestringent.Theso-calledDC/DCvoltageorDCcurrentissmallchangetotheextentpermissible,notabso
4、lutechange.ow,withthesingleapplicationofintegratedpowerswitchingpowersupply,switchingpowersupplyismovingintheshort,small,light,thindirection.Chipswitchingpowersupplysincethemid-20thcentury,90haveshownsincetheadventofgreatvitality,asaconsiderabledevelopm
5、entandimpactofnewproducts,thepowersectorattractedwidespreadattentionathomeandabroad.Especiallyinthelasttwoyears,foreignmanufacturersandsomewell-knownchipintroducedalargenumberofcompetingsingle-chipswitchingpowersupplyintegratedcircuit,morepromotionofthe
6、newswitchingpowersupplyandlayagoodfoundation.Chipswitchingpowersupplywithhighintegration,highprice,themostsimpleexternalcircuit,thebestperformanceandotherindicators,hasnowbecomethedevelopmentofsmallandmedium-powerswitchingpowersupply,precisionandpowermo
7、dulesswitchingpowersupplyintegratedcircuitoptimization.Keywords:PowerSupply;DC/DCDCPowerSupply;Chipswitchingpowersupply第18页共18页目录引言…………………………………………………………………………………………11DC/DC变换器的基础知识…………………………………………………………11.1DC/DC变换的含义……………………………………………………………………11.2DC/DC变换
8、器的分类…………………………………………………………………11.3DC/DC变换技术的应用范围………………………………………………….…………11.4DC/DC变换技术的优点…………………………………………………………………12MC34063的简介…………………………………………………………………….12.1集成电路MC34063概述…………………………………………………………………12.2内部结构及管脚概述……………………………………………………………
