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1、高功率因数开关电源设计系（部）：自动化系专业班：0803班姓名：学号：指导教师：2012年12月1日高功率因数开关电源设计Highpowerfactorpowerdesign摘要功率因数设计是关键指标的电源、电源一贯重视开发技术问题。本文重点对当前流行的单片开关电源芯片为普遍的低功率开关电源的设计和制造。在这里,电源控制电路,利用全氟化碳的使用UCC28019可大大提高了功率因数。电源由6个部分交直流转换电路、电源转换电路、功率因数检测电路,全氟化碳的控制电路、数字集和测量电路、保护电路。交直流转换电路使用控制整流器,电源转换电路使用提高拓扑结构,这可以输出电压值是形式
2、30到36。电源利用C8051F020,供应链管理能完成数字集和措施。该系统具有一定的优点:直观特性、稳定性好,显著提高功率因数。关键词：boost拓扑结构功率因数检测UCC28019C8051F02047AbstractPowerfactoristhekeyindicatorsofthepowersupplyswitchdesign,improvingpowerfactorisinthedevelopmentofswitchpowersupplyhasalwaysattachedgreatimportancetothetechnicalproblems.Paperso
3、nthepopularsinglepieceofswitchpowersupplychip,realizethesmallpower,highpowerfactoroftheswitchingvoltagestabilizerforthedesignandproduction.ThedesignofhighpowerfactorcontrolmodeapplicationswitchingpowersupplyPFC,introduceTIcompanythelaunchofnewUCC28019controlchip,powerfactorcloseto1.Thepo
4、wersupplybyAC-DCtransformcircuit,DC-DCtransformcircuit,controlcircuitandPFCpowerfactordetectioncircuit,digitalmeasurementshowcircuitprotectioncircuit,othercomponents.Amongthem,theAC-DCtransformcircuitadoptsbridgetypeisnotinpossessionofrectifierway,DC-DCtransformcircuittopologystructureby
5、boost,whichcanrealize36Vvoltageoutput,anduseofC8051F020SCMrealizingoutputmeasurementdisplayandpowerfactortestshowedthatetc.Function.Thepowerofthemainadvantageis:thefunction,intuitive,andgoodstability,voltageadjustmentrate,theloadratearetheprescribedscopewithinthepowerfactorthantraditiona
6、lswitchingpowersupplyisgreatlyimproved.Keywords:boosttopologypowerfactortestUCC28019C8051F02047目录1系统总体电路·······················71.1系统总体电路框架··················71.2主控芯片UCC28019的说明···············71.3DC-DC变换模块···················121.4系统电路图······················131.5小结··························
7、132功率因数检测························142.1功率因数的基本定义··················142.2功率因数检测的实现··················142.3实现程序························152.4小结··························163输出采样与显示电路························173.1控制器的选择······················173.2输出采样电路······················203.3信号
