IR1161

IR1161LPBF1©2015InternationalRectifierSubmitDatasheetFeedbackJune1,2015SMARTRECTIFIERTMControlICFeaturesSecondarysidesynchronousrectificationcontrollerDCM,CrCMFlybackandresonanthalf-bridgetopologiesDirectsensingofMOSFETdrainvoltageupto200VMax500kHzswitchingfrequencyAnti-bouncelogicandUVLOprotectionMicropowerstart-up&ultra-lowquiescentcurrent50nsturn-offpropagationdelayProgrammableMinimumOnTimeVccOperatingvoltagerange4.75Vto18VCyclebyCycleMOTCheckCircuitLead-freeCompatiblewith0.3WStandby,EnergyStar,CECP,etc.ApplicationsCharger,AC-DCadaptersProductSummaryTopologyFlyback,ResonantHalf-bridgeVD200VVCC4.75V~18VIo+&Io-+1A&-2.5ATurnonPropagationDelay50ns(typical)TurnoffPropagationDelay50ns(typical)PackageOptions5-PinSOT-23ApplicationDiagramPrimaryControllerLOAD54123IR1161VCCGATEGNDVDMOT+-OrderingInformationBasePartNumberPackageTypeStandardPackCompletePartNumberFormQuantityIR1161LPBF5L-SOT-23TapeandReel3000IR1161LTRPBFIR1161LPBF2©2015InternationalRectifierSubmitDatasheetFeedbackJune1,2015TableofContentsPageOrderingInformation1Description3AbsoluteMaximumRatings4ElectricalCharacteristics5FunctionalBlockDiagram7Input/OutputPinEquivalentCircuitDiagram8PinDefinitions9PinAssignments9ApplicationInformationandAdditionalDetails11PackageDetails18TapeandReelDetails19PartMarkingInformation21QualificationInformation22IR1161LPBF3©2015InternationalRectifierSubmitDatasheetFeedbackJune1,2015DescriptionTheIR1161isasynchronousrectificationcontrolICdesignedtodriveanN-ChannelpowerMOSFETinasecondaryoutputrectifiercircuit.TheMOSFETgateisswitchedonandofftobypassitsbodydiodeduringtheoftheconductionperiodtominimizepowerdissipation,remainingoffduringtheblockingperiod.ThedraintosourcevoltageisaccuratelysensedtodeterminethedirectionandmagnitudeofthecurrentallowingtheIR1161toturntheMOSFETonandoffatclosetozerocurrent.Anintegratedcycle-by-cycleminimumontime(MOT)protectioncircuitautomaticallydetectsanoloadconditionandturnsoffthegatedriveroutputpreventingnegativecurrentfromflowingthroughtheMOSFET.Ruggednessandnoiseimmunityareaccomplishedusinganadvancedblankingschemeanddouble-pulsesuppression,whichallowsreliableoperationinalloperatingmodes.IR1161LPBF4©2015InternationalRectifierSubmitDatasheetFeedbackJune1,2015AbsoluteMaximumRatingsAbsolutemaximumratingsindicatesustainedlimitsbeyondwhichdamagetothedevicemayoccur.AllvoltageparametersareabsolutevoltagesreferencedtoGND,allcurrentsaredefinedpositiveintoanypin.Thethermalresistanceandpowerdissipationratingsaremeasuredunderboardmountedandstillairconditions.—†—†RecommendedOperatingConditionsForproperoperationthedeviceshouldbeusedwithintherecommendedconditions.SymbolDefinitionMin.Max.UnitsVCCSupplyvoltage4.7518VVDDrainSenseVoltage-3††200-40125—††VD≤RecommendedComponentValuesSymbolComponentMin.Max.UnitsRMOTMOTpinresistorvalue5100kCVCCVCCdecouplingcapacitorvalue1—µFIR1161LPBF5©2015InternationalRectifierSubmitDatasheetFeedbackJune1,2015ElectricalCharacteristicsVCC=12VandTA=25°Cunlessotherwisespecified.Theoutputvoltageandcurrent(VOandIO)parametersarereferencedtoGNDpin.————CLOAD=1nF,fSW=300kHz—RMOT=50k—VCC=VCCON-0.1V—230—-10-7.5——730tBLANKBlankingPulseDuration81324µsResetThreshold1.18VBlankingTimeofReset—400—ns——RMOT=5kRMOT=24kRMOT=50kIR1161LPBF6©2015InternationalRectifierSubmitDatasheetFeedbackJune1,2015ElectricalCharacteristicsVCC=12VandTA=25°Cunlessotherwisespecified.Theoutputvoltageandcurrent(VOandIO)parametersarereferencedtoGNDpin.GateDriverSection—IGATE=100mA,VCC=12VVCC=12V,IGATE=5mAVCC=5V,IGATE=5mA——CLOAD=1nF,VCC=12V——CLOAD=1nF,VCC=12V—VDStoVGATE–VDSgoesdownfrom6Vto-1V—VDStoVGATE–VDSgoesupfrom-1Vto6V——IGATE=100mA——IGATE=-100mA————GBD–parameterisguaranteedbydesignandisnottested.IR1161LPBF7©2015InternationalRectifierSubmitDatasheetFeedbackJune1,2015FunctionalBlockDiagramUVLOVDVCCVTH2GNDVGATEVTH3VCCArmingLogic&BlankingSETMinONTimeRESETDRIVERCyclebyCycleMOTCheckCircuitMOTVTH1QSRQIR1161LPBF8©2015InternationalRectifierSubmitDatasheetFeedbackJune1,2015I/OPinEquivalentCircuitDiagramESDDiodeESDDiodeVCCGNDMOTVCCGNDGATEESDDiodeESDDiodeVDGNDESDDiode200VDiodeRESDIR1161LPBF9©2015InternationalRectifierSubmitDatasheetFeedbackJune1,2015PinDefinitionsPIN#SymbolDescription1VCCSupplyVoltage2GNDGround3MOTMinimumOnTimeProgramInput4VDFETDrainSensing5GATEGateDriveOutputPinAssignments54123IR1161VCCGATEGNDVDMOTDetailedPinDescriptionVCC:PowerSupplyThesupplyvoltagepinismonitoredbytheundervoltagelockoutcircuit.ItispossibletoturnofftheICenteringUVLOmodebypullingthispinbelowtheminimumturnoffthresholdvoltageformicropowerconsumption.ToavoidnoiseproblemsabypassceramiccapacitorconnectedtoVccandGNDisneeded,whichshouldbeplacedascloseaspossibletotheIC.AlowvalueseriesresistortoVccmayalsobeaddedifextrafilteringisrequired.Thispinisinternallyclampedto20V.GND:GroundThisistheICgroundreferenceconnectedtotheSRMOSFETsource.MOT:MinimumOnTimeTheMOTprogrammingpincontrolstheamountofminimumontime.OnceVTH2iscrossedforthefirsttime,thegatesignalwil