BiCMOS功率因数预调节器评估板

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1、User’sGuideUCC3817BiCMOSPowerFactorPreregulatorEvaluationBoardUser’sGuide1SLUU077C–September2000–RevisedNovember2002UCC3817BiCMOSPowerFactorPreregulatorEvaluationBoardMikeO’LoughlinPowerSupplyControlProductsContents1Introduction...........................................

2、..............................11.1Features......................................................................21.2Description......................................................................22OperatingGuidelines.....................................................

3、...........32.1Step1:LoadConnections.........................................................42.2Step2:ApplyingInputPower......................................................42.3Step3:MeasuringtheEvaluationBoard’sPerformance...............................43EvaluationBoa

4、rdLayouts............................................................44EvaluationBoardComponents.......................................................55TypicalPerformance.................................................................66AdditionalInformation............

5、...................................................72UCC3817BiCMOSPowerFactorPreregulatorSLUU077C–September2000–RevisedNovember20021IntroductionThisuser’sguidedetailstheTexasInstruments(TI)UCC3817–EVMBiCMOSPowerFactorPreregulatorEvaluationModule(EVM)SLUU077.Itincludesali

6、stofEVMfeatures,abriefdescriptionofthemoduleillustratedwithpictorialandschematicdiagramsandEVMspecifications.TheUCC3817evaluationboardisdesignedtoillustratetheperformanceofthecontrollerina250Wboostconverterwithpowerfactorcorrection.Theboardisdesignedtohandleauniversalinp

7、utoperatingvoltagerange(i.e.85–265Vac)witharegulated385Vdcoutput.ProperprecautionsmustbetakenwhenworkingwiththeboardCAUTION:DHighvoltagelevelsarepresentontheevaluationboardwheneveritisenergized.DTheoutputcapacitorhashighlevelsofenergystorageanditmustbedischargedbeforethe

8、loadisremoved.Improperhandlingoftheevaluationboardcouldcauseseriousinjury.DItisimportanttomaintaintheam