基于UCC28019的高功率开关电源设计摘要电源是现代社会不可或缺的能源之一，在人们的日常生活中，电源具有重要的作用。为了使电源的利用率变高，使电源工作在更高效率的状态，减少能源的损耗，产生了高功率因数电源。功率因数是电源设计技术的一个重要指标，本设计通过采用UCC28019作为主要控制芯片，主电路拓扑采用BOOST升压斩波电路，通过检测输入电压和输入电流进行调整，以达到大大提高功率因数的效果。本设计包含BOOST升压斩波电路、UCC28019控制电路、保护电路、测量电路、辅助电源模块和STM32单片机模块等组成。传统的AC-DC电源设计的方法是使电网电压通过整流后采用电容滤波得到，这种方法会使电路产生大量的电流谐波和功率因数不高等缺点。本设计成功克服了以上的不足之处，使电源的交直变换的效率更高，也得到更高质量的电源。关键词：功率因数；STM32单片机；Boost拓扑；UCC28019；功率因数检测ABSTRACTTheelectricalsourceisoneftheindispensibleenergyintoday’ssociety,theelectricalsourceplaysaimportantroleinpeople’sdailylife.Inordertoimprovetheelectricalsource’sutilization,andreduceenergyloss,sothereishighpowerfactorstabilizedvoltagesupply.Andthepowerfactorisoneofimportantindexesinpowersupplydesigntechnology.Thedesignadoptsucc28019asthemaincontrolchip.InthispapertheBoostChopperisproposedasthemaincircuittopology,thiscircuittesttheinputvoltageandinputcurrentthatcanadjustthepowerfactor,soitcangreatlypromotethepowerfactor.Thisdesigncontainssomemodule,liketheBoostChopper、theucc28019controlcircuit、theprotectcircuit、thetestingcircuit、theaccessorypowersupply、theSTM32singlechipcircuitandsoon.ThemethodoftraditionalAC-DCpowerdesignisthatrectifyingthegrid-voltageandadoptingcapacitancetofilterthevoltage,thismethodhavetwoshortcoming,ontheonehanditcanproducealargenumberofcurrentharmonics,onetheotherhandit’spowerfactorisverylow.Thisdesignissuccessfultoovercometheseshortcoming,itimprovetheefficiencyofelectricalsource’AC-DCconverteranditcanprovidehigh-qualityvoltagesupply.keyword:powerfactor；STM32single-chip；BoostChopper；UCC28019；powerfactortestingcircuit目录1.绪论............................................11.1课题的研究意义.....................................11.2课题的研究背景.....................................21.3课题的研究内容.....................................22.系统方案论证....................................32.1无源功率因数校正方案...............................32.2有源功率因数校正方案...............................42.3方案选择...........................................43.系统原理论证....................................53.1系统框图...........................................53.2UCC28019控制电路...................................63.3BOOST升压电路......................................83.4相位检测电路.......................................113.5光耦隔离电路.......................................153.6辅助电源电路.......................................163.7过流保护电路.......................................183.8AD/DA电路.........................................183.9电流采样电路.......................................214.系统软件设计.....................................224.1系统程序框图......................................224.2功率因数测量部分...................................224.3反馈控制部分.......................................234.4液晶显示部分........................................245.测试结果与分析...................................255.1测试方案与结果......................................255.2总结与展望......................
