TPS40055中文资料




SLUS593B−DECEMBER2003−REVISEDAPRIL2004  

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OperatingInputVoltage8Vto40V
InputVoltageFeed-ForwardCompensation
1%Internal0.7-VReference
ProgrammableFixed-FrequencyUpto1MHzVoltageModeController
InternalGateDriveOutputsforHigh-SideandSynchronousN-ChannelMOSFETs
16-PinPowerPADPackage(θJC=2°C/W)
ThermalShutdown
ExternallySynchronizable
ProgrammableHigh-SideCurrentLimit
ProgrammableClosed-LoopSoft-Start
TPS40054SourceOnly
TPS40055Source/Sink
TPS40057Source/SinkWithVOUTPrebiasAPPLICATIONS
PowerModules
Networking/Telecom
Industrial
ServersDESCRIPTIONTheTPS4005xisafamilyofhigh-voltage,wideinput(8Vto40V),synchronous,step-downconverters.TheTPS4005xfamilyoffersdesignflexibilitywithavarietyofuserprogrammablefunctions,includingsoft-start,UVLO,operatingfrequency,voltagefeed-forward,high-sidecurrentlimit,andloopcompensation.TheTPS4005xarealsosynchronizabletoanexternalsupply.TheyincorporateMOSFETgatedriversforexternalN-channelhigh-sideandsynchronousrectifier(SR)MOSFETs.Gatedrivelogicincorporatesanti-crossconductioncircuitrytopreventsimultaneoushigh-sideandsynchronousrectifierconduction.TheTPS4005xusesvoltagefeed-forwardcontroltechniquestoprovidegoodlineregulationoverthewide(4:1)inputvoltagerange,andfastresponsetoinputlinetransientswithnearconstantgainwithinputvariationwhicheasesloopcompensation.Theexternallyprogrammablecurrentlimitprovidespulse-by-pulsecurrentlimit,aswellashiccupmodeoperationutilizinganinternalfaultcounterforlongerdurationoverloads.SIMPLIFIEDAPPLICATIONDIAGRAMVOUTVINUDG−03179513121615123KFFRTBP5SGNDVINHDRVSWBP104SYNC11ILIMTPS4005xPWP6SS/SD7VFB8COMP14BOOSTLDRV10PGND9+−

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SLUS593B−DECEMBER2003−REVISEDAPRIL20042(2)PlasticHTSSOP(PWP)(NOTAG)TPS40054PWP−40°Cto85°CSOURCE/SINK(2)PlasticHTSSOP(PWP)(NOTAG)TPS40055PWPSOURCE/SINK(2)withprebiasPlasticHTSSOP(PWP)(NOTAG)TPS40057PWP(1)ThePWPpackageisalsoavailabletapedandreeled.AddanRsuffixtothedevicetype(i.e.,TPS40054PWPR).SeetheapplicationsectionofthedatasheetforPowerPADdrawingandlayoutinformation.(2)SeeApplicationInformationsection,pg.7ABSOLUTEMAXIMUMRATINGSoveroperatingfree-airtemperaturerangeunlessotherwisenoted(3)TPS40054TPS40055TPS40057UNITVIN45VFB,SS,SYNC−0.3to6Inputvoltagerange,VINSW−0.3to45VInputvoltagerange,VINSW,transient50ns−2.5VKFF,withIIN(max)=−5mA−0.3to11Outputvoltagerange,VOUTCOMP,RT,SS−0.3to6Inputcurrent,IINKFF5mAOutputcurrent,IOUTRT200µAOperatingjunctiontemperaturerange,TJ−40to125Storagetemperature,Tstg−55to150°CLeadtemperature1,6mm(1/16inch)fromcasefor10seconds260C(3)Stressesbeyondthoselistedunder“absolutemaximumratings”maycausepermanentdamagetothedevice.Thesearestressratingsonly,andfunctionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedunder“recommendedoperatingconditions”isnotimplied.Exposuretoabsolute-maximum-ratedconditionsforextendedperiodsmayaffectdevicereliability.RECOMMENDEDOPERATINGCONDITIONSMINNOMMAXUNITInputvoltage,VI840VOperatingfree-airtemperature,TA−4085°C


SLUS593B−DECEMBER2003−REVISEDAPRIL20043(4)(5)(TOPVIEW)(4)FormoreinformationonthePWPpackage,refertoTITechnicalBrief,LiteratureNo.SLMA002.(5)PowerPADheatslugmustbeconnectedtoSGND(pin5)orelectricallyisolatedfromallotherpins.


SLUS593B−DECEMBER2003−REVISEDAPRIL20044=−40°Cto85°C,VIN=24Vdc,RT=90.9kΩ,IKFF=150µA,fSW=500kHz,allparametersatzeropowerdissipation(unlessotherwisenoted)PARAMETERTESTCONDITIONSMINTYPMAXUNITINPUTSUPPLYVINInputvoltagerange,VIN840VOPERATINGCURRENTIDDQuiescentcurrentOutputdriversnotswitching,VFB≥0.75V1.53.0mABP5VBP5OutputvoltageIOUT≤1mA4.75.05.2VOSCILLATOR/RAMPGENERATOR(2)fOSCAccuracy8V≤VIN≤40V470520570kHzVRAMPPWMrampvoltage(1)VPEAK−VVAL2.0VVIHHigh-levelinputvoltage,SYNC25VVILLow-levelinputvoltage,SYNC0.8VISYNCInputcurrent,SYNC510µAPulsewidth,SYNC50nsVRTRTvoltage2.382.502.58VMaximumdutycycleVFB=0V,fSW≤500kHz85%94%MaximumdutycycleVFB=0V,500kHz≤fSW≤1MHz(1)80%MinumumdutycycleVFB≥0.75V0%VKFFFeed-forwardvoltage3.353.483.65VIKFFFeed-forwardcurrentoperatingrange(1)201100µASOFTSTARTISSSoft-startsourcecurrent1.652.352.95µAVSSSoft-startclampvoltage3.7VtDSCHDischargetimeCSS=220pF1.62.22.8stSSSoft-starttimeCSS=220pF,0V≤VSS≤1.6V115150215µsBP10VBP10OuputvoltageIOUT≤1mA9.09.610.3VERRORAMPLIFIER8V≤VIN≤40V,TA=25°C0.6980.7000.704VFBFeedbackinputvoltage8V≤VIN≤40V,0°C≤TA≤85°C0.6930.7000.707VVFBFeedbackinputvoltage8V≤VIN≤40V,−40°C≤TA≤