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ID:36846422
大小:3.50 MB
页数:65页
时间:2019-05-16
《基于高压CMOS工艺的高效节能反激PWM控制器关键电路》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、ABSTRACTSimpleswitchingpowersupplymanagementICWaSpopularusedincomputer,electronicequipment,communicationsequipmentforitslowpowerconsumption,highefficiency,lowestcomponentcountswitchersolution.Electronicequipmentbecomessmallerandlowercost,whichhasbeenmaking
2、switchingpowersupplylight,small,thinandhighefficiency.BasedonSinoMOStechnologyandusingComposerandSpectretoolsofCadenceEDA,atypeofsingle.chipcontrollerisdesignedforthefly-backswitchingpowersupplyofAC/DC.Itworksat50kHZwith(PWM),22kHZinBurstMode;Andthemaxduty
3、is80isdecreasegreatlybecauseGreen-modeandpowerpercent.Thepowerconsumptionlimitingisincludedinthissingle—chipcontroller.Green.modewhichprovidesoff-timemodulationtolinearlydecreasetheworkingfrequencyunderlight—loadconditionsandpowerlimitingwhichwillturnofthe
4、transistorwhenpeakcurrentofinductorreachesthethresholdcurrent.Thisintroducesthebasictheoryoffly-backtopographyandPWMfirstly.paperThenthetotalstructureofthesingle-chipcontrollerispresentaccordingtothefunctiontheworkingtheoryandtheworkingprincipleareshowedba
5、sedonitsrequirementandactualapplication.Inchapterthree,theallsub—circuitsincludingUVLO,currentbias,oscillator,greenmode,slopcompensation,powerlimiting,PWM,OVP,blankingtimegenerator,logiccontrolleraredesignedandsimulated.Asaresult,allofthesub.circuitsaresat
6、isfiedtherequirements.ThesyntheticcircuitiSalsosimulatedaboutnormalworking,greenmodeworkingandSOon;theresultsofsimulationmeetthefunctionrequirement.’Thesingle.chipdesignedinthispaperissummarizedandthedevelopmenttrendofswitchingpowersupplyisintroducedatlast
7、.converterBurstmodeKeywords:SwitchingpowersupplyFly-backPWMMainCircuits西安电子科技大学学位论文独创性(或创新性)声明秉承学校严谨的学分和优良的科学道德,本人声明所呈交的论文是我个人在导师指导下进行的研究工作及取得的研究成果。尽我所知,除了文中特别加以标注和致谢中所罗列的内容以外,论文中不包含其他人已经发表或撰写过的研究成果;也不包含为获得西安电子科技大学或其它教育机构的学位或证书而使用过的材料。与我一同工作的同志对本研究所做的任何贡献均
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