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首页 tps28225同步整流.pdf

tps28225同步整流.pdf

tps28225同步整流.pdf

上传者: lz1429 2013-12-13 评分1 评论0 下载0 收藏0 阅读量986 暂无简介 简介 举报

简介:本文档为《tps28225同步整流pdf》,可适用于IT/计算机领域,主题内容包含TPSTPSwwwticomSLUSC–MAY–REVISEDAPRILHighFrequencyASinkSynchronousMOSFETDri符等。

TPSTPSwwwticomSLUSC–MAY–REVISEDAPRILHighFrequencyASinkSynchronousMOSFETDriversCheckforSamples:TPS,TPSFEATURESDESCRIPTION•DrivesTwoNChannelMOSFETswithnsAdaptiveDeadTimeTheTPSandTPSarehighspeeddriversforNchannelcomplimentarydrivenpower•WideGateDriveVoltage:VUptoVMOSFETswithadaptivedeadtimecontrolTheseWithBestEfficiencyatVtoVdriversareoptimizedforuseinvarietyofhighcurrent•WidePowerSystemTrainInputVoltage:VoneandmultiphasedctodcconvertersTheUptoVTPSisasolutionthatprovideshighly•WideInputPWMSignals:VuptoVefficient,smallsizelowEMIemmissionsAmplitudeTheperformanceisachievedbyuptoVgate•CapableDriveMOSFETswithACurrentdrivevoltage,nsadaptivedeadtimecontrol,nsperPhasepropagationdelaysandhighcurrentAsourceandAsinkdrivecapabilityTheΩimpedancefor•HighFrequencyOperation:nsPropagationthelowergatedriverholdsthegateofpowerDelayandnsRiseFallTimeAllowFSWMOSFETbelowitsthresholdandensuresnoMHzshootthroughcurrentathighdVdtphasenode•CapablePropagate<nsInputPWMPulsestransitionsThebootstrapcapacitorchargedbyan•LowSideDriverSinkOnResistance(Ω)internaldiodeallowsuseofNchannelMOSFETsinhalfbridgeconfigurationPreventsdVdTRelatedShootThroughCurrentTheTPSfeaturesastatePWMinput•StatePWMInputforPowerStageShutdowncompatiblewithallmultiphasecontrollersemployingstateoutputfeatureAslongastheinputstays•SpaceSavingEnable(input)andPowerGoodwithinstatewindowforthensholdofftime,the(output)SignalsonSamePindriverswitchesbothoutputslowThisshutdown•ThermalShutdownmodepreventsaloadfromthereversed•UVLOProtectionoutputvoltage•InternalBootstrapDiodeTheotherfeaturesincludeundervoltagelockout,•EconomicalSOICandThermallyEnhancedthermalshutdownandtwowayenablepowergoodsignalSystemswithoutstatefeaturedcontrollersmmxmmDFNPackagescanuseenablepowergoodinputoutputtoholdboth•HighPerformanceReplacementforPopularoutputslowduringshuttingdownStateInputDriversTheTPSisofferedinaneconomicalSOICandthermallyenhancedlowsizeDualFlatNoLeadAPPLICATIONS(DFN)packagesThedriverisspecifiedinthe•MultiPhaseDCtoDCConverterswithAnalogextendedtemperaturerangeof–CtoCwithorDigitalControltheabsolutemaximumjunctiontemperatureC•DesktopandServerVRMsandEVRDsTheTPSoperatesinthesamemannerasthe•PortableNotebookRegulatorsTPSotherthantheinputundervoltagelock•SynchronousRectificationforIsolatedPoweroutUnlessotherwisestatedallreferencestotheSuppliesTPSapplytotheTPSalsoPleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheetUNLESSOTHERWISENOTEDthisdocumentcontainsCopyright–,TexasInstrumentsIncorporatedPRODUCTIONDATAinformationcurrentasofpublicationdateProductsconformtospecificationsperthetermsofTexasInstrumentsstandardwarrantyProductionprocessingdoesnotnecessarilyincludetestingofallparametersKVDDENPGBOOTUGATEPHASELGATEGNDVDDKSTATEINPUTCIRCUITPWMSHOOTTHROUGHPROTECTIONTHERMALSDHLDOFFTIMEUVLOBOOTUGATEPHASELGATEGNDVDDENBLPWMOUTFBGNDTPSVDD(VtoV)VIN(VtoVVDD)VOUTVCCTPSTPSTPSSLUSC–MAY–REVISEDAPRILwwwticomFUNCTIONALBLOCKDIAGRAMTYPICALAPPLICATIONSOnePhasePOLRegulatorSubmitDocumentationFeedbackCopyright–,TexasInstrumentsIncorporatedProductFolderLink(s):TPSTPSPWMCONTROLLERISOLATIONANDFEEDBACKCONTROLDRIVELODRIVEHIHILIHBHOHSLOBOOTUGATEPHASELGATEGNDVDDENPGPWMLINEARREGVDD(VtoV)VOUT=VVtoVVPrimaryHighSideVDDHighVoltageDriverVSSTPSTPSTPSwwwticomSLUSC–MAY–REVISEDAPRILTYPICALAPPLICATIONS(continued)DriverforSynchronousRectificationwithComplementaryDrivenMOSFETsCopyright–,TexasInstrumentsIncorporatedSubmitDocumentationFeedbackProductFolderLink(s):TPSTPSBOOTUGATEPHASELGATEGNDVDDENPGPWMBOOTUGATEPHASELGATEGNDVDDENPGPWMVINPWMGNDVOUTPWMPWMEnablePWMToDriverToDriverGNDSToControllerCSCNCSToControllerCSVDD(VtoV)VIN(VtoVVDD)TPSTPSTPSxoranyotheranalogordigitalcontrollerVOUTTPSTPSSLUSC–MAY–REVISEDAPRILwwwticomTYPICALAPPLICATIONS(continued)MultiPhaseSynchronousBuckConverterORDERINGINFORMATION()()()PARTNUMBERTAPEANDREELTEMPERATURERANGE,TA=TJPACKAGEQTYTPSTPSPlasticpinSOIC(D)TPSDTTPSDTPlasticpinSOIC(D)TPSDRTPSDRPlasticpinDFNCtoCTPSDRBTTPSDRBT(DRB)PlasticpinDFNTPSDRBRTPSDRBR(DRB)()SOIC(D)andDFN(DRB)packagesareavailabletapedandreeledAddTsuffixtodevicetype(egTPSDT)toordertapeddevicesandsuffixRtodevicetypetoorderreeleddevices()TheSOIC(D)andDFN(DRB)packageusesinPbFreeleadfinishofPdNiAuwhichiscompatiblewithMSLlevelatCtoCpeakreflowtemperaturetobecompatiblewitheitherleadfreeorSnPbsolderingoperations()IntheDFNpackage,thepadunderneaththecenterofthedeviceisathermalsubstrateThePCB“thermalland”designforthisexposeddiepadshouldincludethermalviasthatdropdownandconnecttooneormoreburiedcopperplane(s)ThiscombinationofviasforverticalheatescapeandburiedplanesforheatspreadingallowstheDFNtoachieveitsfullthermalpotentialThispadshouldbeeithergroundedforbestnoiseimmunity,anditshouldnotbeconnectedtoothernodesSubmitDocumentationFeedbackCopyright–,TexasInstrumentsIncorporatedProductFolderLink(s):TPSTPSTPSTPSwwwticomSLUSC–MAY–REVISEDAPRILABSOLUTEMAXIMUMRATINGSoveroperatingfreeairtemperaturerange(unlessotherwisenoted)()()TPSVALUEUNITInputsupplyvoltagerange,VDD()–toBootvoltage,VBOOT–toDC–toorVBOOT–VDDwhicheverislessPhasevoltage,VPHASEPulse<ns,E=mJ–toorVBOOT–VDDwhicheverislessInputvoltagerange,VPWM,VENPG–toVPHASE–toVBOOT,(VBOOT–VPHASE<)VOutputvoltagerange,VUGATEPulse<ns,E=mJVPHASE–toVBOOT,(VBOOT–VPHASE<)–toVDDOutputvoltagerange,VLGATEPulse<ns,E=mJ–toVDDESDrating,HBMkESDrating,HBMESDrating,CDMContinuoustotalpowerdissipationSeeDissipationRatingTableOperatingvirtualjunctiontemperaturerange,TJ–toOperatingambienttemperaturerange,TA–toCStoragetemperature,Tstg–toLeadtemperature(soldering,sec)()Stressesbeyondthoselistedunder“absolutemaximumratings”maycausepermanentdamagetothedeviceThesearestressratingsonly,andfunctionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedunder“recommendedoperatingconditions”isnotimpliedExposuretoabsolutemaximumratedconditionsforextendedperiodsmayaffectdevicereliability()Thesedevicesaresensitivetoelectrostaticdischargefollowproperdevicehandlingprocedures()AllvoltagesarewithrespecttoGNDunlessotherwisenotedCurrentsarepositiveinto,negativeoutofthespecifiedterminalConsultPackagingSectionoftheDatabookforthermallimitationsandconsiderationsofpackagesDISSIPATIONRATINGS()DERATINGFACTORTA<CTA=CTA=CBOARDPACKAGERqJCRqJAABOVETA=CPOWERRATINGPOWERRATINGPOWERRATINGHighK()DCWCWmWCWWWHighK()DRBCWCWmWCWWW()ThesethermaldataaretakenatstandardJEDECtestconditionsandareusefulforthethermalperformancecomparisonofdifferentpackagesThecoolingconditionandthermalimpedanceRqJAofpracticaldesignisspecific()TheJEDECtestboardJESD,inchxinch,layerwithozinternalpowerandgroundplanesandoztopandbottomtracelayers()TheJEDECtestboardJESDwithdirectthermalpadattach,inchxinch,layerwithozinternalpowerandgroundplanesandoztopandbottomtracelayersRECOMMENDEDOPERATINGCONDITIONSoveroperatingfreeairtemperaturerange(unlessotherwisenoted)MINTYPMAXUNITInputsupplyvoltage(TPS)VDDInputsupplyvoltage(TPS)VVINPowerinputvoltagefortheTPSV–VDDTJOperatingjunctiontemperaturerange–CCopyright–,TexasInstrumentsIncorporatedSubmitDocumentationFeedbackProductFolderLink(s):TPSTPSTPSTPSSLUSC–MAY–REVISEDAPRILwwwticomELECTRICALCHARACTERISTICS()VDD=V,ENPGpulleduptoVDDbykΩresistor,TA=TJ=–CtoC(unlessotherwisenoted)PARAMETERTESTCONDITIONSMINTYPMAXUNITUNDERVOLTAGELOCKOUTRisingthreshold(TPS)Risingthreshold(TPS)VPWM=VFallingthreshold(TPS)VFallingthreshold(TPS)Hysteresis(TPS)Hysteresis(TPS)BIASCURRENTSIDD(off)BiassupplycurrentVENPG=low,PWMpinfloatingmAIDDBiassupplycurrentVENPG=high,PWMpinfloatingINPUT(PWM)VPWM=VIPWMInputcurrentmAVPWM=V–PWMstaterisingthreshold()VPWMstatefallingthresholdVPWMPEAK=VtHLDRstateshutdownHoldofftimensTMINPWMminimumpulsetoforceUGATEpulseCL=nFatUGATE,VPWM=VENABLEPOWERGOOD(ENPG)EnablehighrisingthresholdPGFETOFFEnablelowfallingthresholdPGFETOFFVHysteresisPowergoodoutputVDD=VUPPERGATEDRIVEROUTPUT(UGATE)SourceresistancemAsourcecurrentΩSourcecurrent()VUGATEPHASE=VAtRURisetimeCL=nFnsSinkresistancemAsinkcurrentΩSinkcurrent()VUGATEPHASE=VAtFUFalltimeCL=nFns()TypicalvaluesforTA=C()NottestedinproductionSubmitDocumentationFeedbackCopyright–,TexasInstrumentsIncorporatedProductFolderLink(s):TPSTPSTPSTPSwwwticomSLUSC–MAY–REVISEDAPRILELECTRICALCHARACTERISTICS()(continued)VDD=V,ENPGpulleduptoVDDbykΩresistor,TA=TJ=–CtoC(unlessotherwisenoted)PARAMETERTESTCONDITIONSMINTYPMAXUNITLOWERGATEDRIVEROUTPUT(LGATE)SourceresistancemAsourcecurrentΩSourcecurrent()VLGATE=VAtRLRisetime()CL=nFnsSinkresistancemAsinkcurrentΩSinkcurrent()VLGATE=VAFalltime()CL=nFnsSWITCHINGTIMEtDLUUGATEturnoffpropagationDelayCL=nFtDLLLGATEturnoffpropagationDelayCL=nFnstDTUDeadtimeLGATEturnofftoUGATEturnonCL=nFtDTLDeadtimeUGATEturnofftoLGATEturnonCL=nFBOOTSTRAPDIODEVFForwardvoltageForwardbiascurrentmAVTHERMALSHUTDOWNRisingthreshold()Fallingthreshold()CHysteresis()NottestedinproductionCopyright–,TexasInstrumentsIncorporatedSubmitDocumentationFeedbackProductFolderLink(s):TPSTPSUGATEBOOTPWMGNDPHASEENPGVDDLGATEBOOTPWMVDDENPGLGATEGNDUGATEPHASEExposedThermalDiePadKVDDENPGBOOTUGATEPHASELGATEGNDVDDKSTATEINPUTCIRCUITPWMSHOOTTHROUGHPROTECTIONTHERMALSDHLDOFFTIMEUVLOTPSTPSSLUSC–MAY–REVISEDAPRILwwwticomDEVICEINFORMATIONSOICPackage(topview)DRBPackage(topview)BLOCKDIAGRAMAFortheTPSDRBdevicethethermalPADonthebottomsideofpackagemustbesolderedandconnectedtotheGNDpinandtotheGNDplaneofthePCBintheshortestpossiblewaySeeRecommendedLandPatternintheApplicationsectionSubmitDocumentationFeedbackCopyright–,TexasInstrumentsIncorporatedProductFolderLink(s):TPSTPSTPSTPSwwwticomSLUSC–MAY–REVISEDAPRILTERMINALFUNCTIONSTERMINALIODESCRIPTIONSOICDRBNAMEUGATEOUppergatedrivesinksourceoutputConnecttogateofhighsidepowerNChannelMOSFETFloatingbootstrapsupplypinfortheuppergatedriveConnectthebootstrapcapacitorbetweenBOOTIOthispinandthePHASEpinThebootstrapcapacitorprovidesthechargetoturnontheupperMOSFETThePWMsignalisthecontrolinputforthedriverThePWMsignalcanenterthreedistinctstatesPWMIduringoperation,seethestatePWMInputsectionunderDETAILEDDESCRIPTIONforfurtherdetailsConnectthispintothePWMoutputofthecontrollerGNDGroundpinAllsignalsarereferencedtothisnodeExposedThermalConnectdirectlytotheGNDforbetterthermalperformanceandEMIdiepadpadLowergatedrivesinksourceoutputConnecttothegateofthelowsidepowerNChannelLGATEOMOSFETVDDIConnectthispintoaVbiassupplyPlaceahighqualitybypasscapacitorfromthispintoGNDEnablePowerGoodinputoutputpinwithMΩimpedanceConnectthispintoHIGHtoenableandLOWtodisablethedeviceWhendisabled,thedevicedrawslessthanmAbiascurrentIftheENPGIOVDDisbelowUVLOthresholdorovertemperatureshutdownoccurs,thispinisinternallypulledlowConnectthispintothesourceoftheupperMOSFETandthedrainofthelowerMOSFETThispinPHASEIprovidesareturnpathfortheuppergatedriverTRUTHTABLEVDDFALLING>VANDTJ<CVDDRISING<VENPGFALLING>VPINENPGRISINGORTJ>CPWM>VANDPWMSIGNALSOURCEIMPEDANCE<VPWM<VTRISETFALL<ns>kΩFOR>ns(State)()LGATELowLowHighLowLowUGATELowLowLowHighLowENPGLow()Toexitthestatecondition,thePWMsignalshouldgolowOneLowPWMinputsignalfollowedbyoneHighPWMinputsignalisrequiredbeforereenteringthestateconditionCopyright–,TexasInstrumentsIncorporatedSubmitDocumentationFeedbackProductFolderLink(s):TPSTPSNormalswitchingPWMLGATEUGATEStatewindowtDLLtFLtPWMMINtDTUtRUtDLUtFUtDTLtRLtHLDRtHLDFEnterintoStateatPWMriseExitStateEnterintoStateatPWMfallUGATEexitsStateafterPWMgoesLowandthenHighNormalswitchingPWMLGATEUGATEStatewindowtDLLtFLtPWMMINtDTUtRUtDLUtFUtDTLtRLtHLDRtHLDFEnterintoStateatPWMriseExitStateEnterintoStateatPWMfallLGATEexitsStateafterPWMgoesHighandthenLowTPSTPSSLUSC–MAY–REVISEDAPRILwwwticomTPSTIMINGDIAGRAMTPSTIMINGDIAGRAMSubmitDocumentationFeedbackCopyright–,TexasInstrumentsIncorporatedProductFolderLink(s):TPSTPSTJTemperatureCIDD(off)BiasSupplymAUVLOUnderVoltageLockoutVTJTemperatureCTPSFallingTPSRisingTPSFallingTPSRisingPWMPWMStateThresholdVFallingRisingTJTemperatureCFallingRisingTJTemperatureCENPGEnablePowerGoodVTPSTPSwwwticomSLUSC–MAY–REVISEDAPRILTYPICALCHARACTERISTICSBIASSUPPLYCURRENTvsUNDERVOLTAGELOCKOUTTHRESHOLDTEMPERATUREvs(VENPG=Low,PWMInputFloating,VDD=V)TEMPERATUREFigureFigureENABLEPOWERGOODTHRESHOLDPWMSTATETHRESHOLDS,(VInputPulses)vsvsTEMPERATURE(VDD=V)TEMPERATURE,(VDD=V)FigureFigureCopyright–,TexasInstrumentsIncorporatedSubmitDocumentationFeedbackProductFolderLink(s):TPSTPSRSINKRSOURCETJTemperatureCROUTOutputImpedanceWRSINKRSOURCETJTemperatureCROUTOutputImpedanceWFallingRisingTJTemperatureCtRLtFLRiseandFallTimensFallingRisingTJTemperatureCtRUtFURiseandFallTimensTPSTPSSLUSC–MAY–REVISEDAPRILwwwticomTYPICALCHARACTERISTICS(continued)UGATEDCOUTPUTIMPEDANCELGATEDCOUTPUTIMPEDANCEvsvsTEMPERATURE,(VDD=V)TEMPERATURE(VDD=V)FigureFigureUGATERISEANDFALLTIMELGATERISEANDFALLTIMEvsvsTEMPERATURE(VDD=V,CLOAD=nF)TEMPERATURE(VDD=V,CLOAD=nF)FigureFigureSubmitDocumentationFeedbackCopyright–,TexasInstrumentsIncorporatedProductFolderLink(s):TPSTPSLGATEUGATETJTemperatureCtDTUtDTLUGATEandLGATEnsLGATEUGATETJTemperatureCtDLUtDLLUGATEandLGATEnsTJTemperatureCVFForwardVoltageVTJTemperatureCTMINMinimumShortPulsensTPSTPSwwwticomSLUSC–MAY–REVISEDAPRILTYPICALCHARACTERISTICS(continued)UGATEANDLGATE(TurningOFFPropagationDelays)UGATEANDLGATE(DeadTime)vsvsTEMPERTURE(VDD=V,CLOAD=nF)TEMPERTURE(VDD=V,CLOAD=nF)FigureFigureUGATEMINIMUMSHORTPULSEBOOTSTRAPDIODEFORWARDVOLTAGEvsvsTEMPERATURE(VDD=V,CLOAD=nF)TEMPERATURE(VDD=V,IF=mA)FigureFigureCopyright–,TexasInstrumentsIncorporatedSubmitDocumentationFeedbackProductFolderLink(s):TPSTPSUG=nCL

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