PTV05010WAH;中文规格书,Datasheet资料

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PTV05010WSLTS242A–FEBRUARY2005–REVISEDOCTOBER2005

8-A,5-VINPUTNONISOLATEDWIDE-OUTPUTADJUSTSIPMODULE

FEATURESAPPLICATIONS

••••

MultivoltageDigitalSystemsHigh-DensityLogicCircuits

High-EndComputersandServers5-VIntermediateBusArchitectures

•Upto8-AOutputCurrent•5-VInputBus

•Wide-OutputVoltageAdjust(0.8Vto3.6V)

•Efficienciesupto95%•On/OffInhibit•PrebiasStart-Up

•UndervoltageLockout•Auto-Track™Sequencing

•OutputOvercurrentProtection(Nonlatching,Auto-Reset)

•OperatingTemperature:–40°Cto85°C•SafetyAgencyApprovals:UL/cUL60950,EN60950VDE•POLA™Compatible

DESCRIPTION

ThePTV05010Wisaready-to-usenonisolatedpowermodule,andpartofanewclassofcompletedc/dcswitchingregulatorsfromTexasInstruments.Theseregulatorscombinehighperformancewithdouble-sided,surface-mountconstruction,togivedesignerstheflexibilitytopowerthemostcomplexmultiprocessordigitalsystemsusingoff-the-shelfcatalogparts.

ThePTV05010Wseriesisproducedina8-pin,singlein-linepin(SIP)package.TheSIPfootprintminimizesboardspace,andoffersanalternatepackageoptionforspaceconsciousapplications.Operatingfroma5-Vinputbus,theseriesprovidesstep-downconversiontoawiderangeofoutputvoltages,atupto8Aofoutputcurrent.Theoutputvoltagecanbesettoanyvalueovertherange,0.8Vto3.6V,usingasingleexternalresistor.

ThisseriesincludesAuto-Track™.Auto-Track™simplifiesthetaskofsupply-voltagesequencinginapowersystembyenablingtheoutputvoltageofmultiplemodulestoaccuratelytrackeachother,oranyexternalvoltage,duringpowerupandpowerdown.

Otheroperatingfeaturesincludeanon/offinhibit,andtheabilitytostartupintoanexistingoutputvoltageorprebias.Anonlatchingovercurrenttripprotectsagainstloadfaults.

Targetapplicationsincludecomplexmultivoltage,multiprocessorsystemsthatincorporatetheindustry'shigh-speedmicroprocessors,busdrivers,andtheTMS320™DSPfamily.

Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.

POLA,Auto-Track,TMS320aretrademarksofTexasInstruments.

Copyright©2005,TexasInstrumentsIncorporated

PRODUCTIONDATAinformationiscurrentasofpublicationdate.ProductsconformtospecificationsperthetermsoftheTexasInstrumentsstandardwarranty.Productionprocessingdoesnotnecessarilyincludetestingofallparameters.

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PTV05010WSLTS242A–FEBRUARY2005–REVISEDOCTOBER2005

www.ti.comThesedeviceshavelimitedbuilt-inESDprotection.TheleadsshouldbeshortedtogetherorthedeviceplacedinconductivefoamduringstorageorhandlingtopreventelectrostaticdamagetotheMOSgates.

STANDARDAPPLICATION

Track5TrackVI8VIInhibit7C1*100mF(Required)C2*10mFCeramic(Required)PTV05010GNDGND61VOAdj4RSET#1%0.05󰀀W(Required)C3*100mF(Optional)C4*10mFCeramic(Optional)LOAD2,37VOVOInhibitGNDGND*󰀀See󰀀theApplication󰀀Information󰀀for󰀀capacitor󰀀recommendations#󰀀RSETis󰀀required󰀀to󰀀adjust󰀀the󰀀output󰀀voltage󰀀higher󰀀than󰀀its󰀀lowest󰀀value.See󰀀theApplication󰀀Informationsection󰀀for󰀀values.ORDERINGINFORMATION

Forthemostcurrentpackageandorderinginformation,seethePackageOptionAddendumattheendofthisdatasheet,orseetheTIwebsiteatwww.ti.com.

ABSOLUTEMAXIMUMRATINGS

overoperatingfree-airtemperaturerangeunlessotherwisenoted(1)

UNIT

V(Track)TATstgV(INH)(1)(2)

Trackinputvoltage

OperatingtemperaturerangeLeadtemperatureStoragetemperatureInhibitinputvoltage

OverVIrange5seconds

–0.3VtoVI+0.3V–40°Cto85°C260°C

(2)

–55°Cto125°C–0.3Vto7V

Stressesbeyondthoselistedunderabsolutemaximumratingsmaycausepermanentdamagetothedevice.Thesearestressratingsonly,andfunctionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedunderrecommendedoperatingconditionsisnotimplied.Exposuretoabsolute-maximum-ratedconditionsforextendedperiodsmayaffectdevicereliability.Thisproductisnotcompatiblewithsurface-mountreflowsolderprocesses.

PACKAGESPECIFICATIONS

PTV05010W(SuffixAH)

WeightFlammabilityMechanicalshockMechanicalvibration(1)

Qualificationlimit.

MeetsUL94V-O

PerMil-STD-883D,Method2002.3,1ms,1/2sine,mountedMil-STD-883D,Method2007.2,20Hz-2000Hz

500G10G

(1)(1)

2.5grams

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ELECTRICALCHARACTERISTICS

operatingat25°Cfree-airtemperature,VI=5V,VO=3.3V,C1=100µF,C2=10µF,C3=0µF,C4=0µF,andIO=IOmax(unlessotherwisenoted)

PARAMETER

IOVI

OutputcurrentInputvoltagerangeSet-pointvoltagetoleranceTemperaturevariation

VO

LineregulationLoadregulationTotaloutputvariationAdjustrange

–40°CIncludesset-point,line,load,–40°C≤TA≤85°COverVIrange

RSET=698Ω,VO=3.3VRSET=2.21kΩ,VO=2.5V

η

Efficiency

IO=IOmax

RSET=5.49kΩ,VO=1.8VRSET=8.87kΩ,VO=1.5VRSET=17.4kΩ,VO=1.2VRSET=36.5kΩ,VO=1V

Outputvoltageripple(pk-pk)

IO(trip)

OvercurrentthresholdTransientresponse

IILInputlowcurrentControlslew-ratelimitVIincreasingVIdecreasingVIHInputhighvoltage

Inhibitcontrol(pin12)

II(stby)ƒS

InputstandbycurrentSwitchingfrequencyExternalinputcapacitance

Capacitancevalue

Equivalentseriesresistance(nonceramic)

MTBF

Reliability

PerTelcordiaSR-332,50%stress,TA=40°C,groundbenign

VILInputlowvoltageIILInputlowcurrentOverVIandIOranges

Nonceramic(C1)

Ceramic(C2)Nonceramic

Ceramic

4

ReferencedtoGNDPintoGND

55010010

(4)(4)

TESTCONDITIONS

NaturalconvectionairflowOverIOloadrange

MIN

04.5

TYPMAX

82%

(1)

UNITAV

5.5

(2)

0.5%

55

3

0.8

95%93%90%%87%85%1512

RecoverytimeVoover/undershoot

PintoGNDC3≤C3(max)

4.3

3.1VI–0.5–0.2

0.245600

650

3.7

Open

(3)(2)

mVmV%VoV

3.6

20-MHzbandwidth

Reset,followedbyauto-recovery

1-A/µsloadstep,50to100%IOmax,C3=100µF

mVPPAµsmV

–0.13

14.5

mAV/msVVmAmAkHzµF

70100

Trackcontrol(pin9)

UVLO

Undervoltagelockout

0.6

Inhibit(pin7)toGND,Track(pin5)open

00

(7)

100

(5)

3300

(6)

Externaloutputcapacitance(C3)300

µFmΩ

5106Hr

(1)(2)(3)(4)(5)(6)(7)

Seethermalderatingcurvesforsafeoperatingarea(SOA),orconsultfactoryforappropriatederating.

Theset-pointvoltagetoleranceisaffectedbythetoleranceandstabilityofRSET.ThestatedlimitisunconditionallymetifRSEThasatoleranceof1%,with100ppm/°Corbettertemperaturestability.

Thiscontrolpinisinternallypulleduptotheinputvoltage,VI.Ifthisinputisleftopencircuit,themodulewilloperatewheninputpowerisapplied.Asmalllow-leakage(<100nA)MOSFETisrecommendedforcontrol.Forfurtherinformation,seetherelatedapplicationnote.A10-µFhigh-frequencyceramiccapacitorand100-µFelectrolyticinputcapacitorarerequiredforproperoperation.Theelectrolyticcapacitormustberatedfor300mArmsminimumripplecurrent.SeetheApplicationInformationforfurtherguidanceoncapacitorselection.

Anexternaloutputcapacitorisnotrequiredforbasicoperation.Adding100µFofdistributedcapacitanceattheloadimprovesthetransientresponse.

Thisisthecalculatedmaximum.TheminimumESRlimitationoftenresultsinalowervalue.WhencontrollingtheTrackpinusingavoltagesupervisor,CO(max)isreducedto2200µF.SeetheApplicationInformationforfurtherguidance.

ThisisthetypicalESRforalltheelectrolytic(nonceramic)outputcapacitance.Use7mΩastheminimumwhenusingmaximum-ESRvaluestocalculate.

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PTV05010WSLTS242A–FEBRUARY2005–REVISEDOCTOBER2005

www.ti.comTYPICALCHARACTERISTICS(5-VINPUT)(8)(9)

EFFICIENCY

vs

OUTPUTCURRENT

10090Efficiency󰀀-󰀀%OUTPUTVOLTAGERIPPLE

vs

OUTPUTCURRENT

50VO-󰀀Output󰀀Ripple󰀀Voltage󰀀-󰀀mVPPVO=󰀀3.3󰀀V403020VO=󰀀3.3󰀀V80706050VO=󰀀2.5󰀀VVO=󰀀1.8󰀀VVO=󰀀0.8󰀀VVO=󰀀1.2󰀀V10VO=󰀀0.8󰀀V0012345678012345678IO-󰀀Output󰀀Current󰀀-AIO-󰀀Output󰀀Current󰀀-AFigure1.

POWERDISSIPATION

vs

OUTPUTCURRENT

2.5PD-󰀀Power󰀀Dissipation󰀀-󰀀WFigure2.

TEMPERATUREDERATING

vs

OUTPUTCURRENT

9080Air󰀀Temperature󰀀-oC400󰀀LFM200󰀀LFM100󰀀LFMNat󰀀Conv21.510.5VO=󰀀0.8󰀀V70605040Air󰀀FlowVO=󰀀3.3󰀀V3067800123452012345678IO-󰀀Output󰀀Current󰀀-AIO-󰀀Output󰀀Current󰀀-AFigure3.

(8)(9)

Figure4.

Theelectricalcharacteristicdatahasbeendevelopedfromactualproductstestedat25C.Thisdataisconsideredtypicalfortheconverter.AppliestoFigure1,Figure2,andFigure3.Thetemperaturederatingcurvesrepresenttheconditionsatwhichinternalcomponentsareatorbelowthemanufacturer'smaximumoperatingtemperatures.Theairflowdirectionisparalleltothelongaxisofthemodule.Deratinglimitsapplytomodulessoldereddirectlytoa100mmx100mm,double-sidedPCBwith2oz.copper.AppliestoFigure4.4SubmitDocumentationFeedback

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DEVICEINFORMATION

TERMINALFUNCTIONS

TERMINALNAMEVIVOGND

NO.82,31,6

DESCRIPTION

Thepositiveinputvoltagepowernodetothemodule,whichisreferencedtocommonGND.TheregulatedpositivepoweroutputwithrespecttotheGNDnode.

ThisisthecommongroundconnectionfortheVIandVOpowerconnections.Itisalsothe0-Vdcreferenceforthecontrolinputs.Bothpinsmustbeconnectedtocommonground.

TheInhibitpinisanopen-collector/drain,active-lowinputthatisreferencedtoGND.Applyingalow-levelgroundsignaltothisinputdisablesthemodule'soutputandturnsofftheoutputvoltage.WhentheInhibitcontrolisactive,theinputcurrentdrawnbytheregulatorissignificantlyreduced.Iftheinhibitfeatureisnotused,thecontrolpinshouldbeleftopen-circuit.Themodulethenproducesanoutputvoltagewheneveravalidinputsourceisapplied.A1%or0.5%resistormustbeconnecteddirectlybetweenthispinandGND(pin1isrecommended)tosettheoutputvoltageofthemodulehigherthanitslowestvalue.Thetemperaturestabilityoftheresistorshouldbe100ppm/°C(orbetter).Theset-pointrangeis0.8Vto3.6V.Theresistorvaluecanbecalculatedusingaformula.Ifthisinputisleftopen-circuit,theoutputvoltagedefaultstoitslowestvalue.Forfurtherinformation,consulttherelatedapplicationnote.

Thespecificationtablegivesthestandardresistorvaluesforanumberofcommonoutputvoltages.

Thisisananalogcontrolinputthatenablestheoutputvoltagetofollowanexternalvoltage.Thispinbecomesactivetypically20msaftertheinputvoltagehasbeenapplied,andallowsdirectcontroloftheoutputvoltagefrom0Vuptothenominalset-pointvoltage.Withinthisrange,theoutputfollowsthevoltageattheTrackpinonavolt-for-voltbasis.Whenthecontrolvoltageisraisedabovethisrange,themoduleregulatesatitsset-point

voltage.Thefeatureallowstheoutputvoltagetorisesimultaneouslywithothermodulespoweredfromthesameinputbus.Ifunused,thisinputshouldbeconnectedtoVI.

NOTE:Duetotheundervoltagelockoutfeature,theoutputofthemodulecannotfollowitsowninputvoltageduringpowerup.ConsulttherelatedApplicationInformationforfurtherguidance.

FrontViewofModule

Inhibit7

VoAdjust

4

Track5

PIN1Figure5.PinTerminalLocations

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PTV05010WSLTS242A–FEBRUARY2005–REVISEDOCTOBER2005

www.ti.comAPPLICATIONINFORMATION

CapacitorRecommendationsforthePTV05010WPowerModule

InputCapacitors

Therequiredinputcapacitorsarea10-µFceramicandaminimumof100-µFelectrolytictype.The100-µFcapacitancemustberatedfor300mArmsripplecurrentcapability.SeeTable1.Theaboveripplecurrentrequirementsareconditionalthatthe10-µFceramiccapacitorispresent.The10-µFX5R/X7Rceramiccapacitorisnecessarytoreduceboththemagnitudeofripplecurrentthroughtheelectroyticcapacitorandtheamountofripplecurrentreflectedbacktotheinputsource.Ceramiccapacitorsshouldbelocatedwithin0.5inch.(1,3cm)ofthemodule'sinputpins.AdditionalceramiccapacitorscanbeaddedtoreducetheRMSripplecurrentrequirementfortheelectrolyticcapacitor.

Ripplecurrent(rms)rating,lessthan150-mΩequivalentseriesresistance(ESR),andtemperaturearethemajorconsiderationswhenselectinginputcapacitors.Unlikepolymer-tantalumcapacitors,regulartantalumcapacitorshavearecommendedminimumvoltageratingof2×(max.dcvoltage+acripple).Thisisstandardpracticetoensurereliability.Onlyafewtantalumcapacitorswerefoundtohavesufficientvoltageratingtomeetthisrequirement.Attemperaturesbelow0°C,theESRofaluminumelectrolyticcapacitorsincreases.Fortheseapplications,Os-Con,polymer-tantalum,andpolymer-aluminumtypesshouldbeconsidered.OutputCapacitor(Optional)

Forapplicationswithloadtransients(suddenchangesinloadcurrent),regulatorresponsebenefitsfromexternaloutputcapacitance.Therecommendedoutputcapacitanceof100µFallowsthemoduletomeetitstransientresponsespecification.Formostapplications,ahigh-qualitycomputer-gradealuminumelectrolyticcapacitorisadequate.Thesecapacitorsprovidedecouplingoverthefrequencyrange,2kHzto150kHz,andaresuitablewhenambienttemperaturesareabove0°C.Foroperationbelow0°C,tantalum-,ceramic-,orOs-Con-typecapacitorsarerecommended.Whenusingoneormorenonceramiccapacitors,thecalculatedequivalentESRshouldbenolowerthan4mΩ(7mΩusingthemanufacturer'smaximumESRforasinglecapacitor).Alistofpreferredlow-ESR-typecapacitorsareidentifiedinTable1.CeramicCapacitors

Above150kHz,theperformanceofaluminumelectrolyticcapacitorsislesseffective.MultilayerceramiccapacitorshavelowESRandaresonantfrequencyhigherthanthebandwidthoftheregulator.Theycanbeusedtoreducethereflectedripplecurrentattheinputaswellasimprovethetransientresponseoftheoutput.Whenusedontheoutput,theircombinedESRisnotcriticalaslongasthetotalvalueofceramiccapacitancedoesnotexceedapproximately300µF.Also,topreventtheformationoflocalresonances,donotplacemorethanfiveidenticalceramiccapacitorsinparallelwithvaluesof10µForgreater.TantalumCapacitors

Tantalum-typecapacitorscanonlybeusedontheoutputbus,andarerecommendedforapplicationswheretheambientoperatingtemperaturecanbelessthan0°C.TheAVXTPS,Sprague593D/594/595andKemetT495/T510capacitorseriesaresuggestedovermanyothertantalumtypesduetotheirhigherratedsurge,powerdissipation,andripplecurrentcapability.Asacaution,manygeneral-purposetantalumcapacitorshaveconsiderablyhigherESR,reducedpowerdissipation,andlowerripplecurrentcapability.Thesecapacitorsarealsolessreliableastheyhavereducedpowerdissipationandsurgecurrentratings.TantalumcapacitorsthathavenostatedESRorsurgecurrentratingarenotrecommendedforpowerapplications.

WhenspecifyingOs-conandpolymertantalumcapacitorsfortheoutput,theminimumESRlimitisencounteredbeforethemaximumcapacitancevalueisreached.

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CapacitorTable

Table1identifiesthecharacteristicsofcapacitorsfromanumberofvendorswithacceptableESRandripplecurrent(rms)ratings.Therecommendednumberofcapacitorsrequiredatboththeinputandoutputbusesisidentifiedforeachcapacitortype.

Note:Thisisnotanextensivecapacitorlist.Capacitorsfromothervendorsareavailablewithcomparablespecifications.Thoselistedareforguidance.TheRMSripplecurrentratingandESR(at100kHz)arecriticalparametersnecessarytoensurebothoptimumregulatorperformanceandlongcapacitorlife.

Table1.Input/OutputCapacitors(1)

CapacitorCharacteristics

CapacitorVendor,Type/Series(Style)

WorkingVoltage(V)10166.36.3101610161010106.310101010101010166.36.3

Murata,CeramicX5R(SMD)

6.36.31616

TDK,CeramicX5R(SMD)

6.36.31616

Value(µF)330220470220470680120270470220120100100150100330120220100102247100472210100472210

0.002

—

3225

MaxESRat100kHz(Ω)0.1170.1170.160.020.120.090.0270.090.0720.0250.0350.040.0750.050.0550.010.040.140.030.0020.0020.0020.002

—MaxRippleCurrentat85°C(Irms)

(mA)

555117600316055567028005757602400>25001810>1090>15591500>3800212010402670—

PhysicalSize

(mm)8×11.58×11,58×10.26.3×9.88×12510×108×6,710×12,58×11,57.3×4.38×76.3×6,07.3×5.7×4.17.3×5.7×4.17.3×4.3×47.3×4.3×4

8×77.5×4.3×4.110×10.53225322532253225

InputBus111111111111N/RN/R11111≥1≥1≥1≥1≥1≥1≥1≥1≥1

(2)(2)

Quantity

OptionalOutputBus

111≤311≤311≤2≤5≤4≤4≤4≤4≤1≤3≤4≤3≤5≤5≤5≤3≤5≤5≤5≤3≤5≤5≤5

VendorPartNumber

Panasonic,AluminumFC(Radial)FK(SMD)UnitedChemi-ConPSA,Poly-Alum(Radial)LXZ,Alum(Radial)MVZ,Alum(SMD)PXA,Poly-Alum(SMD)Nichicon,AluminumHD(Radial)SanyoTP,Poscap

SEQP,Os-Con(Radial)SVP,Os-Con(SMD)AVX,Tantalum,SerIIITPS(SMD)Kemet(SMD)T520,Poly-TantT530,Poly-Tant/OrganicVishay-Sprague94SVP595D,Tantalum(SMD)94SA,Os-Con(Radial)Kemet,CeramicX5R(SMD)

EEUFC1A331EEUFC1C221EEVFK0J471PPSA6.3VB220MF11LXZ10VB471M8X12LLMVZ16VC681MJ10TPPXA10VC121MH70TPUPM1C271MHH6UHD1A471MPR10TPE220M10SEQP120M6SVP100M

TPSC107M010R0075TPSD157M010R0050T520D107M010ASE055T530X337M010ASE01094SVP127X0010E7595D227X0010D2T94SA107X0010EBPC1210C106M4PACC1210C226K9PACC1210C476K9PACGRM32ER60J107MGRM32ER60J476MGRM32ER61C226KGRM32DR61C106KC3225X5R0J107MTC3225X5R0J476MTC3225X5R1C226MTC3225X5R1C106MT

≥1(2)

(2)

≥1(2)

(2)(2)(2)(2)(2)(2)

(1)

(2)

CapacitorSupplierVerification

Pleaseverifyavailabilityofcapacitorsidentifiedinthistable.Capacitorsuppliersmayrecommendalternativepartnumbersbecauseoflimitedavailabilityorobsoleteproducts.Insomeinstances,thecapacitorproductlifecyclemaybeindeclineandhaveshort-termconsiderationforobsolescence.

RoHS,Lead-freeandMaterialDetails

Pleaseconsultcapacitorsuppliersregardingmaterialcomposition,RoHSstatus,lead-freestatus,andmanufacturingprocess

requirements.Componentdesignatorsorpartnumberdeviationscanoccurwhenmaterialcompositionorsolderingrequirementsareupdated.

Ceramiccapacitorsarerequiredtocomplementelectrolytictypesattheinputandtoreducehigh-frequencyripplecurrent.

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PTV05010WSLTS242A–FEBRUARY2005–REVISEDOCTOBER2005

www.ti.comDesigningforFastLoadTransients

Thetransientresponseofthedc/dcconverterhasbeencharacterizedusingaloadtransientwithadi/dtof1A/µs.Thetypicalvoltagedeviationforthisloadtransientisgiveninthedatasheetspecificationtableusingtheoptionalvalueofoutputcapacitance.Asthedi/dtofatransientisincreased,theresponseofaconverterregulationcircuitultimatelydependsonitsoutputcapacitordecouplingnetwork.Thisisaninherentlimitationwithanydc/dcconverteroncethespeedofthetransientexceedsitsbandwidthcapability.Ifthetargetapplicationspecifiesahigherdi/dtorlowervoltagedeviation,therequirementcanonlybemetwithadditionaloutputcapacitordecoupling.Inthesecases,specialattentionmustbepaidtothetype,value,andESRofthecapacitorsselected.

Ifthetransientperformancerequirementsexceedthatspecifiedinthedatasheet,orthetotalamountofloadcapacitanceisabove3000µF,theselectionofoutputcapacitorsbecomesmoreimportant.

AdjustingtheOutputVoltage

TheVOAdjustcontrol(pin4)setstheoutputvoltageofthePTV05010Wproducttoavalueovertherange,0.8Vto3.6V.Theadjustmentmethodrequirestheadditionofasingleexternalresistor,RSET,thatmustbeconnecteddirectlybetweentheVOAdjustandtheregulator'soutputGND(pin1isrecommended).Withoutanadjustresistor,theoutputvoltageissettoitslowestvalue.Table2givesthepreferredvalueoftheexternalresistorforanumberofstandardvoltages,alongwiththeactualoutputvoltagethatthisresistancevalueprovides.Figure6showstheplacementoftherequiredresistor.

Table2.NearestStandardValuesofRSETforCommonOutputVoltages

VO

(Required)3.3V2.5V2V1.8V1.5V1.2V1V0.8V

RSET

(StandardValue)

698Ω2.21kΩ4.12kΩ5.49kΩ8.87kΩ17.4kΩ36.5kΩOpen

VO(Actual)3.309V2.502V2.010V1.803V1.504V1.202V1.005V0.800V

Forotheroutputvoltages,thevalueoftherequiredresistorcaneitherbecalculatedorsimplyselectedfromtherangeofvaluesgiveninTable3.Equation1maybeusedforcalculatingtheadjustresistorvalue.

RSET+10kW 0.8V*2.49kWVO*0.8V(1)

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PTV05010WVOVOGNDGNDVOAdjCORSET,󰀀1%GNDFigure6.VOAdjustResistorPlacement

Table3.CalculatedValuesofRSETforOtherOutputVoltages

VO0.8000.8250.8500.8750.9000.9250.9500.9751.0001.0251.0501.0751.1001.1251.1501.1751.2001.2251.2501.3001.3501.400

RSETOpen318kΩ158kΩ104kΩ77.5kΩ61.5kΩ50.8kΩ43.2kΩ37.5kΩ33.1kΩ29.5kΩ26.6kΩ24.2kΩ22.1kΩ20.4kΩ18.8kΩ17.5kΩ16.3kΩ15.3kΩ13.5kΩ12.1kΩ10.8kΩ

VO1.4501.5001.5501.6001.6501.7001.7501.8001.8501.9001.9502.0002.0502.1002.1502.2002.2502.3002.3502.4002.4502.500

RSET9.82kΩ8.94kΩ8.18kΩ7.51kΩ6.92kΩ6.40kΩ5.93kΩ5.51kΩ5.13kΩ4.78kΩ4.47kΩ4.18kΩ3.91kΩ3.66kΩ3.44kΩ3.22kΩ3.03kΩ2.84kΩ2.67kΩ2.51kΩ2.36kΩ2.22kΩ

VO2.5502.6002.6502.7002.7502.8002.8502.9002.9503.0003.0503.1003.1503.2003.2503.3003.3503.4003.4503.5003.5503.600

RSET2.08kΩ1.95kΩ1.83kΩ1.72kΩ1.61kΩ1.51kΩ1.41kΩ1.32kΩ1.23kΩ1.15kΩ1.07kΩ998Ω914Ω843Ω775Ω710Ω7Ω587Ω529Ω473Ω419Ω367Ω

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PTV05010WSLTS242A–FEBRUARY2005–REVISEDOCTOBER2005

www.ti.comFeaturesofthePTH/PTVFamilyofNon-Isolated,Wide-OutputAdjustPowerModules

POLA™Compatibility

ThePTH/PTVfamilyofnon-isolated,wide-outputadjustablepowermodulesfromTexasInstrumentsareoptimizedforapplicationsthatrequireaflexible,high-performancemodulethatissmallinsize.EachoftheseproductsarePOLA™compatible.POLA-compatibleproductsareproducedbyanumberofmanufacturers,andoffercustomersadvanced,non-isolatedmoduleswiththesamefootprintandformfactor.POLApartsarealsoensuredtobeinteroperable,therebyprovidingcustomerswithtruesecond-sourceavailability.Soft-StartPowerUp

TheAuto-TrackfeatureallowsthepowerupofmultiplePTH/PTVmodulestobedirectlycontrolledfromtheTrackpin.However,inastand-aloneconfiguration,orwhentheAuto-Trackfeatureisnotbeingused,theTrackpinshouldbedirectlyconnectedtotheinputvoltage,VI(seeFigure7).5Track5󰀀V8VIGND6PTV05010WGND1VO2,󰀀3Adjust41.8󰀀VC1100mFC210mFRSET5.49󰀀kW1%,󰀀0.05󰀀WC3100mFLOADGNDFigure7.Power-UpApplicationCircuit

WhentheTrackpinisconnectedtotheinputvoltage,theAuto-Trackfunctionispermanentlydisengaged.Thisallowsthemoduletopowerupentirelyunderthecontrolofitsinternalsoft-startcircuitry.Whenpowerupisundersoft-startcontrol,theoutputvoltagerisestotheset-pointataquickerandmorelinearrate.

VI(2󰀀V/div)VO(1󰀀V/div)II(2A/div)t󰀀-󰀀Time󰀀=󰀀5󰀀ms/divFigure8.Power-UpWaveform

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