2024年8月14日发(作者：应凝云)
TPS73201DRBEVM-518
User'sGuide
SBVU014–August2009
TPS73x01DRBEVM-518
Thisuser’sguidedescribesthecharacteristics,operation,anduseoftheTPS73x01DRBEVM-518
cumentincludessetupinstructions,aschematicdiagram,thermalguidelines,a
billofmaterials(BOM),andprintedcircuitboard(PCB)layoutdrawings.
1
2
3
4
5
Overview
.....................................................................................................................
Setup
.........................................................................................................................
Operation
.....................................................................................................................
ThermalGuidelines
.........................................................................................................
BoardLayout,Schematic,andPartsList
................................................................................
ListofFigures
1
2
3
4
5
AssemblyLayer
.............................................................................................................
6
TopLayerRouting
..........................................................................................................
7
BottomLayerAssembly
....................................................................................................
8
BottomLayerRouting
......................................................................................................
8
TPS73x01DRBEVM-518Schematic
......................................................................................
9
ListofTables
1
2
3
5
DeviceSummary
............................................................................................................
2
RelatedDocumentation
....................................................................................................
2
MaximumInputVoltage
....................................................................................................
4
TPS73x01DRBEVM-518BillofMaterials
Contents
2
2
3
3
4
.............................................................................
10
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SBVU014–August2009
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Copyright©2009,TexasInstrumentsIncorporated
TPS73x01DRBEVM-518
1
Overview
1Overview
Thisdocumentdescribesthecharacteristics,operation,anduseoftheTPS73x01DRBEVM-518evaluation
module(EVM).ThisEVMdemonstratesthecapabilitiesandfeaturesofTexasInstruments'
TPS73201DRB,TPS73601DRB,andTPS73701DRBlow-dropout(LDO)
regulators,eachavailableina3-mm×3-mmSONpackage,arecapableof250-mA,400-mA,and1-A
outputcurrents,73x01DRBEVM-518modulehelpsdesignersevaluatetheoperation
andperformanceoftheTPS73201,TPS73601,andTPS73701LDOdevicesinavarietyofconfigurations.
TheoutputvoltagefromtheLDOdevicecanbeselectedbyajumpertoobtain1.8V,2.5V,2.8V,3.0V
1summarizestheLDOsthataresuitableforusewiththisEVM.
Summary
Device
TPS73201DRB
TPS73601DRB
TPS73701DRB
PackageSize
3-mm×3-mmSON
3-mm×3-mmSON
3-mm×3-mmSON
Description
Cap-Free,NMOS,250-mALowDropoutRegulator
withReverseCurrentProtection
Cap-Free,NMOS,400-mALowDropoutRegulator
withReverseCurrentProtection
1-ALowDropoutRegulatorwithReverseCurrent
Protection
1.1RelatedDocumentationfromTexasInstruments
ThefollowingrelateddocumentsareavailablethroughtheTexasInstrumentswebsiteat
.
dDocumentation
PartNumber
TPS73201
TPS73601
TPS73701
LiteratureNumber
SBVS037
SBVS038
SBVS067
2Setup
ThissectiondescribesthejumpersandconnectorsontheEVMaswellashowtoproperlyconnect,set
up,andusetheTPS73x01DRBEVM-518.
2.1
2.1.1
Input/OutputConnectorDescriptions
J1:VIN
dstotheinputsupplyshouldbetwistedand
keptasshortaspossibletominimizeelectromagneticinterference(EMI)onalbulk
capacitanceshouldbeaddedbetweenJ1andJ2ifthesupplyleadsaregreaterthan6inches(15,24cm).
Anadditional47-µForgreatercapacitorimprovesthetransientresponseoftheTPS73x01DRBandhelps
73x01DRBEVM-518hasa
footprint(C4)ontheEVMavailableforthispurpose.
2.1.2J3:VOUT
tthispintothepositiveinputoftheload.
2.1.3J2:GND
Thisjumperisthereturnconnectionfortheinputpowersupplyoftheregulator.
2
TPS73x01DRBEVM-518
Copyright©2009,TexasInstrumentsIncorporated
SBVU014–August2009
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Operation
2.1.4J4:GND
Thispointisthereturnconnectionfortheoutput.
2.1.5JP1:ENABLE
gashortingjumper
betweenpins1and2(ONposition)gtheshortingjumperbetweenpins
2and3(OFFposition)disablestheTPS73x01DRB.
2.1.6JP2:V
OUT
Selection
gashortingjumperbetween
theappropriatepinsgivesthecorrespondingoutputs.
WARNING
perJP2shouldonlybechangedfromoneplaceto
anotherwhenthepowerisoff.
rshouldnottouchthejumperJP2whilethepoweris
appliedtotheEVMsincetheoutputvoltagemaychangedueto
thenoisepick-upinthefeedbackpath.
3Operation
ThissectionprovidesinformationabouttheoperationoftheTPS73x01DRBEVM.
3.1ConfigurationandInitialOperation
ttheinputpowerreturn(ground)
ommendedmaximumoperating
ualhighestinputvoltagemaybelessthan5.5Vasaresultofthermalconditions.
SeetheThermalConsiderationssectionofthismanualtodeterminethehighestinputvoltagefor
maintainingasafejunctiontemperature.
ConnectthedesiredloadbetweenJ3(positivelead)andJ4(negativeorreturnlead).Configurejumper
JP2forthedesiredoutputvoltage.
4ThermalGuidelines
ThissectionpresentsguidelinesforthethermalmanagementoftheTPS73x01DRBEVM-518board.
4.1ThermalConsiderations
Thermalmanagementisakeydesigncomponentofanypowerconverter,andisespeciallyimportant
erhelpyoudesigntheTPS73x01DRBfamilyintoyour
applications,thefollowingformulashouldbeusedtoapproximatethemaximumpowerdissipation(P
DMax
)
ataparticularambienttemperature:
T
J
= T
A
+ P
D
´q
JA
(1)
where:
•
•
•
•
T
J
isthejunctiontemperature
T
A
istheambienttemperature
P
D
isthepowerdissipationintheIC
θ
JA
isthethermalresistancefromjunctiontoambient
TPS73x01DRBEVM-518
Copyright©2009,TexasInstrumentsIncorporated
SBVU014–August2009
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3
BoardLayout,Schematic,andPartsList
AlltemperaturesareindegreesCelsius.
ThemeasuredthermalresistancefromjunctiontoambientfortheTPS73x01EVMhasatypicalvalueof
40°C/ommendedmaximumoperatingjunctiontemperaturespecifiedintheproductdatasheet
fortheTPS73x01familyis+125°esetwopiecesofinformation,themaximumpowerdissipation
canbefoundbyusingEquation(1).
Calculation
WhatisthemaximuminputvoltagethatcanbeappliedtoaTPS73701DRBwitha1.8-Voutputvoltageifthe
ambienttemperatureis+85°Candthefull1Aofloadcurrentisrequired?
Given:
T
J
=+125°C,T
A
=+85°C,θ
JA
=40°C/W
UsingEquation1,wesubstituteinthegivenvaluesaboveandfindthatthemaximumpowerdissipationforthe
partisP
D
=1W.
125°C=85°C+P
D
(40°W/C)
Thisresultmeinput
voltagecanbecalculated.
P
D
=(V
IN
–V
OUT
)×I
OUT
=(V
IN
–1.8V)×1A=1W
Sothemaximuminputvoltagewouldneedtobe2.8Vorlessinordertomaintainasafejunctiontemperature.
Similaranalysiscanbeperformedtodeterminethemaximuminputvoltageatroomtemperature(+25°C)
or+85°Ctoprovidefulloutputcurrentwhilemaintainingthejunctiontemperatureatorbelow+125°
answerdependsonthedesiredoutputvoltage,asTable3shows.
mInputVoltage
Output
Voltage
V
OUT
1.8V
2.5V
2.8V
3.0V
3.3V
(1)
TPS73701DRB
AmbientTemperature
+25°C
4.3V
5.0V
5.3V
5.5V
5.5V
(1)
TPS73601DRB
AmbientTemperature
+25°C
5.5V
5.5V
5.5V
5.5V
5.5V
(1)
TPS73201DRB
AmbientTemperature
+25°C
5.5V
5.5V
5.5V
5.5V
5.5V
(1)
+85°C
2.8V
3.5V
3.8V
4.0V
4.3V
+85°C
4.3V
5.0V
5.3V
5.5V
5.5V
(1)
+85°C
5.5V
5.5V
5.5V
5.5V
5.5V
(1)
Limitedbyrecommendedoperatingmaximumtemperature,notthermalresistance.
5BoardLayout,Schematic,andPartsList
Thisprovidesthe
TPS73x01DRBEVM-518schematicandbillofmaterials.
5.1PCBLayout
Figure1throughFigure4showthelayoutfortheTPS73x01DRBEVM-518PCB.
NOTE:iguresareintendedtoshowhowtheboardislaid
out;theyarenotintendedtobeusedformanufacturingTPS73x01DRBEVM-518PCBs.
4
TPS73x01DRBEVM-518
Copyright©2009,TexasInstrumentsIncorporated
SBVU014–August2009
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BoardLayout,Schematic,andPartsList
lyLayer
SBVU014–August2009
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Copyright©2009,TexasInstrumentsIncorporated
TPS73x01DRBEVM-518
5
BoardLayout,Schematic,andPartsList
erRouting
6
TPS73x01DRBEVM-518
Copyright©2009,TexasInstrumentsIncorporated
SBVU014–August2009
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BoardLayout,Schematic,andPartsList
LayerAssembly
SBVU014–August2009
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Copyright©2009,TexasInstrumentsIncorporated
TPS73x01DRBEVM-518
7
BoardLayout,Schematic,andPartsList
LayerRouting
8
TPS73x01DRBEVM-518
Copyright©2009,TexasInstrumentsIncorporated
SBVU014–August2009
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BoardLayout,Schematic,andPartsList
5.2SchematicandBOM
4liststhebillofmaterialsforthisEVM.
73x01DRBEVM-518Schematic
+
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Copyright©2009,TexasInstrumentsIncorporated
TPS73x01DRBEVM-518
9
BoardLayout,Schematic,andPartsList
(2)(3)
73x01DRBEVM-518BillofMaterials
(1)
-01
1
1
0
0
4
1
1
1
1
1
1
1
1
1
-02
1
1
0
0
4
1
1
1
1
1
1
1
1
0
-03
1
1
0
0
4
1
1
1
1
1
1
1
1
0
RefDes
C1
C2
C3
C4
J1,J2,J3,
J4
JP1
JP2
R1
R2
R3
R4
R5
R6
U1
(4)
Value
10µF
2.2µF
—
47µF
Description
Capacitor,ceramic,6.3V,
X5R,10%
Capacitor,ceramic,10V,
X5R,10%
Capacitor,ceramic,16V,
X5R,10%
Capacitor,aluminum,16V,
±20%
Size
0603
0603
0603
0.260×0.307
inch
0.100inch×2
0.100inch×3
0.100inch×5
×2
0603
0603
0603
0603
0603
0603
QFN-8
PartNumber
Std
Std
Std
EEEVFK1C470P
PEC02SAAN
PEC03SAAN
PEC05DAAN
Std
Std
Std
Std
Std
Std
TPS73201DRB
Mfr
Std
Std
Std
Panasonic
Sullins
Sullins
Sullins
Std
Std
Std
Std
Std
Std
Texas
Instruments
Texas
Instruments
Texas
Instruments
3M
Any
PEC02SHeader,male2-pin,100-mil
AANspacing
PEC03SHeader,3-pin,100-mil
AANspacing
PEC05DHeader,male2x5-pin,
AAN100-milspacing
44.2kΩ
88.7kΩ
41.2kΩ
33.2kΩ
29.4kΩ
25.5kΩ
Resistor,chip,1/16W,1%
Resistor,chip,1/16W,1%
Resistor,chip,1/16W,1%
Resistor,chip,1/16W,1%
Resistor,chip,1/16W,1%
Resistor,chip,1/16W,1%
IC,Cap-free,NMOS,250-mA
TPS7320
LDOregulatorwithreverse
1DRB
currentProtection
IC,Cap-free,NMOS,400-mA
TPS7360
LDOregulatorwithreverse
1DRB
currentProtection
TPS7370IC,1-ALDOregulatorwith
1DRBreversecurrentprotection
—
—
Shunt,100-milblack
PCB,FR-4,2-layer,SMOBC,
1.620-in×1.500in×.062in
0
0
2
1
(1)
(2)
(3)
(4)
1
0
2
1
0
1
2
1
U1
U1
—
N/A
QFN-8
QFN-8
0.1
—
TPS73601DRB
TPS73701DRB
929950-00
HPA518**
cautionsmustbeobserved.
o-cleanfluxisnotacceptable.
TheseassembliesmustcomplywithworkmanshipstandardsIPC-A-610Class2.
Componentscanbesubstitutedwithequivalentmanufacturercomponentsexceptwhereindicatedwith**.
10
TPS73x01DRBEVM-518
Copyright©2009,TexasInstrumentsIncorporated
SBVU014–August2009
SubmitDocumentationFeedback
EVALUATIONBOARD/KITIMPORTANTNOTICE
TexasInstruments(TI)providestheenclosedproduct(s)underthefollowingconditions:
Thisevaluationboard/kitisintendedforuseforENGINEERINGDEVELOPMENT,DEMONSTRATION,OREVALUATIONPURPOSES
ONLYandisnoshandlingtheproduct(s)musthave
,thegoodsbeingprovidedarenotintendedtobecomplete
intermsofrequireddesign-,marketing-,and/ormanufacturing-relatedprotectiveconsiderations,includingproductsafetyandenvironmental
measurestypicallyfoundinendpraluationboard/kitdoes
notfallwithinthescopeoftheEuropeanUniondirectivesregardingelectromagneticcompatibility,restrictedsubstances(RoHS),recycling
(WEEE),FCC,CEorUL,andthereforemaynotmeetthetechnicalrequirementsofthesedirectivesorotherrelateddirectives.
Shouldthisevaluationboard/kitnotmeetthespecificationsindicatedintheUser’sGuide,theboard/kitmaybereturnedwithin30daysfrom
EGOINGWARRANTYISTHEEXCLUSIVEWARRANTYMADEBYSELLERTOBUYER
ANDISINLIEUOFALLOTHERWARRANTIES,EXPRESSED,IMPLIED,ORSTATUTORY,INCLUDINGANYWARRANTYOF
MERCHANTABILITYORFITNESSFORANYPARTICULARPURPOSE.
Theuserassumesr,theuserindemnifiesTIfromallclaims
heopenconstructionoftheproduct,itistheuser’sresponsibilitytotakeanyandall
appropriateprecautionswithregardtoelectrostaticdischarge.
EXCEPTTOTHEEXTENTOFTHEINDEMNITYSETFORTHABOVE,NEITHERPARTYSHALLBELIABLETOTHEOTHERFORANY
INDIRECT,SPECIAL,INCIDENTAL,ORCONSEQUENTIALDAMAGES.
TIcurrentlydealswithavarietyofcustomersforproducts,andthereforeourarrangementwiththeuserisnotexclusive.
TIassumesnoliabilityforapplicationsassistance,customerproductdesign,softwareperformance,orinfringementofpatentsor
servicesdescribedherein.
PleasereadtheUser’sGuideand,specifically,theWarningsandRestrictionsnoticeintheUser’
noticitionalinformationonTI’senvironmentaland/or
safetyprograms,/esh.
NolicenseisgrantedunderanypatentrightorotherintellectualpropertyrightofTIcoveringorrelatingtoanymachine,process,or
combinationinwhichsuchTIproductsorservicesmightbeorareused.
FCCWarning
Thisevaluationboard/kitisintendedforuseforENGINEERINGDEVELOPMENT,DEMONSTRATION,OREVALUATIONPURPOSES
ONLYandisnorates,uses,andcanradiateradio
frequencyenergyandhasnotbeentestedforcompliancewiththelimitsofcomputingdevicespursuanttopart15ofFCCrules,whichare
designeionofthisequipmentinotherenvironmentsmay
causeinterferencewithradiocommunications,inwhichcasetheuserathisownexpensewillberequiredtotakewhatevermeasuresmay
berequiredtocorrectthisinterference.
EVMWARNINGSANDRESTRICTIONS
ItisimportanttooperatethisEVMwithintheinputvoltagerangeof 1.7Vto 5.5Vandtheoutputvoltagerangeof 1.2Vto 3.3V.
Exceedingthespecifiedinputrangemaycauseunexpectedoperationand/earequestions
concerningtheinputrange,pleasecontactaTIfieldrepresentativepriortoconnectingtheinputpower.
Applyingloadsoutsideofthespecifiedoutputrangemayresultinunintendedoperationand/orpossiblepermanentdamagetotheEVM.
PleaseconsulttheEVMUser'eisuncertaintyastotheloadspecification,
pleasecontactaTIfieldrepresentative.
Duringnormaloperation,somecircuitcomponentsmayhavecasetemperaturesgreaterthan +85°isdesignedtooperate
properlywithcertaincomponentsabove +85°omponentsincludebutare
notlimitedtolinearregulators,switchingtransistors,passtransistors,ypesofdevicescanbeidentified
usingtheEVMschematiclocatedintheEVMUser'acingmeasurementprobesnearthesedevicesduringoperation,
pleasebeawarethatthesedevicesmaybeverywarmtothetouch.
MailingAddress:TexasInstruments,PostOfficeBox655303,Dallas,Texas75265
Copyright©2009,TexasInstrumentsIncorporated
TPS73201DRBEVM-518
2024年8月14日发(作者：应凝云)
TPS73201DRBEVM-518
User'sGuide
SBVU014–August2009
TPS73x01DRBEVM-518
Thisuser’sguidedescribesthecharacteristics,operation,anduseoftheTPS73x01DRBEVM-518
cumentincludessetupinstructions,aschematicdiagram,thermalguidelines,a
billofmaterials(BOM),andprintedcircuitboard(PCB)layoutdrawings.
1
2
3
4
5
Overview
.....................................................................................................................
Setup
.........................................................................................................................
Operation
.....................................................................................................................
ThermalGuidelines
.........................................................................................................
BoardLayout,Schematic,andPartsList
................................................................................
ListofFigures
1
2
3
4
5
AssemblyLayer
.............................................................................................................
6
TopLayerRouting
..........................................................................................................
7
BottomLayerAssembly
....................................................................................................
8
BottomLayerRouting
......................................................................................................
8
TPS73x01DRBEVM-518Schematic
......................................................................................
9
ListofTables
1
2
3
5
DeviceSummary
............................................................................................................
2
RelatedDocumentation
....................................................................................................
2
MaximumInputVoltage
....................................................................................................
4
TPS73x01DRBEVM-518BillofMaterials
Contents
2
2
3
3
4
.............................................................................
10
Alltrademarksarethepropertyoftheirrespectiveowners.
SBVU014–August2009
SubmitDocumentationFeedback
Copyright©2009,TexasInstrumentsIncorporated
TPS73x01DRBEVM-518
1
Overview
1Overview
Thisdocumentdescribesthecharacteristics,operation,anduseoftheTPS73x01DRBEVM-518evaluation
module(EVM).ThisEVMdemonstratesthecapabilitiesandfeaturesofTexasInstruments'
TPS73201DRB,TPS73601DRB,andTPS73701DRBlow-dropout(LDO)
regulators,eachavailableina3-mm×3-mmSONpackage,arecapableof250-mA,400-mA,and1-A
outputcurrents,73x01DRBEVM-518modulehelpsdesignersevaluatetheoperation
andperformanceoftheTPS73201,TPS73601,andTPS73701LDOdevicesinavarietyofconfigurations.
TheoutputvoltagefromtheLDOdevicecanbeselectedbyajumpertoobtain1.8V,2.5V,2.8V,3.0V
1summarizestheLDOsthataresuitableforusewiththisEVM.
Summary
Device
TPS73201DRB
TPS73601DRB
TPS73701DRB
PackageSize
3-mm×3-mmSON
3-mm×3-mmSON
3-mm×3-mmSON
Description
Cap-Free,NMOS,250-mALowDropoutRegulator
withReverseCurrentProtection
Cap-Free,NMOS,400-mALowDropoutRegulator
withReverseCurrentProtection
1-ALowDropoutRegulatorwithReverseCurrent
Protection
1.1RelatedDocumentationfromTexasInstruments
ThefollowingrelateddocumentsareavailablethroughtheTexasInstrumentswebsiteat
.
dDocumentation
PartNumber
TPS73201
TPS73601
TPS73701
LiteratureNumber
SBVS037
SBVS038
SBVS067
2Setup
ThissectiondescribesthejumpersandconnectorsontheEVMaswellashowtoproperlyconnect,set
up,andusetheTPS73x01DRBEVM-518.
2.1
2.1.1
Input/OutputConnectorDescriptions
J1:VIN
dstotheinputsupplyshouldbetwistedand
keptasshortaspossibletominimizeelectromagneticinterference(EMI)onalbulk
capacitanceshouldbeaddedbetweenJ1andJ2ifthesupplyleadsaregreaterthan6inches(15,24cm).
Anadditional47-µForgreatercapacitorimprovesthetransientresponseoftheTPS73x01DRBandhelps
73x01DRBEVM-518hasa
footprint(C4)ontheEVMavailableforthispurpose.
2.1.2J3:VOUT
tthispintothepositiveinputoftheload.
2.1.3J2:GND
Thisjumperisthereturnconnectionfortheinputpowersupplyoftheregulator.
2
TPS73x01DRBEVM-518
Copyright©2009,TexasInstrumentsIncorporated
SBVU014–August2009
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Operation
2.1.4J4:GND
Thispointisthereturnconnectionfortheoutput.
2.1.5JP1:ENABLE
gashortingjumper
betweenpins1and2(ONposition)gtheshortingjumperbetweenpins
2and3(OFFposition)disablestheTPS73x01DRB.
2.1.6JP2:V
OUT
Selection
gashortingjumperbetween
theappropriatepinsgivesthecorrespondingoutputs.
WARNING
perJP2shouldonlybechangedfromoneplaceto
anotherwhenthepowerisoff.
rshouldnottouchthejumperJP2whilethepoweris
appliedtotheEVMsincetheoutputvoltagemaychangedueto
thenoisepick-upinthefeedbackpath.
3Operation
ThissectionprovidesinformationabouttheoperationoftheTPS73x01DRBEVM.
3.1ConfigurationandInitialOperation
ttheinputpowerreturn(ground)
ommendedmaximumoperating
ualhighestinputvoltagemaybelessthan5.5Vasaresultofthermalconditions.
SeetheThermalConsiderationssectionofthismanualtodeterminethehighestinputvoltagefor
maintainingasafejunctiontemperature.
ConnectthedesiredloadbetweenJ3(positivelead)andJ4(negativeorreturnlead).Configurejumper
JP2forthedesiredoutputvoltage.
4ThermalGuidelines
ThissectionpresentsguidelinesforthethermalmanagementoftheTPS73x01DRBEVM-518board.
4.1ThermalConsiderations
Thermalmanagementisakeydesigncomponentofanypowerconverter,andisespeciallyimportant
erhelpyoudesigntheTPS73x01DRBfamilyintoyour
applications,thefollowingformulashouldbeusedtoapproximatethemaximumpowerdissipation(P
DMax
)
ataparticularambienttemperature:
T
J
= T
A
+ P
D
´q
JA
(1)
where:
•
•
•
•
T
J
isthejunctiontemperature
T
A
istheambienttemperature
P
D
isthepowerdissipationintheIC
θ
JA
isthethermalresistancefromjunctiontoambient
TPS73x01DRBEVM-518
Copyright©2009,TexasInstrumentsIncorporated
SBVU014–August2009
SubmitDocumentationFeedback
3
BoardLayout,Schematic,andPartsList
AlltemperaturesareindegreesCelsius.
ThemeasuredthermalresistancefromjunctiontoambientfortheTPS73x01EVMhasatypicalvalueof
40°C/ommendedmaximumoperatingjunctiontemperaturespecifiedintheproductdatasheet
fortheTPS73x01familyis+125°esetwopiecesofinformation,themaximumpowerdissipation
canbefoundbyusingEquation(1).
Calculation
WhatisthemaximuminputvoltagethatcanbeappliedtoaTPS73701DRBwitha1.8-Voutputvoltageifthe
ambienttemperatureis+85°Candthefull1Aofloadcurrentisrequired?
Given:
T
J
=+125°C,T
A
=+85°C,θ
JA
=40°C/W
UsingEquation1,wesubstituteinthegivenvaluesaboveandfindthatthemaximumpowerdissipationforthe
partisP
D
=1W.
125°C=85°C+P
D
(40°W/C)
Thisresultmeinput
voltagecanbecalculated.
P
D
=(V
IN
–V
OUT
)×I
OUT
=(V
IN
–1.8V)×1A=1W
Sothemaximuminputvoltagewouldneedtobe2.8Vorlessinordertomaintainasafejunctiontemperature.
Similaranalysiscanbeperformedtodeterminethemaximuminputvoltageatroomtemperature(+25°C)
or+85°Ctoprovidefulloutputcurrentwhilemaintainingthejunctiontemperatureatorbelow+125°
answerdependsonthedesiredoutputvoltage,asTable3shows.
mInputVoltage
Output
Voltage
V
OUT
1.8V
2.5V
2.8V
3.0V
3.3V
(1)
TPS73701DRB
AmbientTemperature
+25°C
4.3V
5.0V
5.3V
5.5V
5.5V
(1)
TPS73601DRB
AmbientTemperature
+25°C
5.5V
5.5V
5.5V
5.5V
5.5V
(1)
TPS73201DRB
AmbientTemperature
+25°C
5.5V
5.5V
5.5V
5.5V
5.5V
(1)
+85°C
2.8V
3.5V
3.8V
4.0V
4.3V
+85°C
4.3V
5.0V
5.3V
5.5V
5.5V
(1)
+85°C
5.5V
5.5V
5.5V
5.5V
5.5V
(1)
Limitedbyrecommendedoperatingmaximumtemperature,notthermalresistance.
5BoardLayout,Schematic,andPartsList
Thisprovidesthe
TPS73x01DRBEVM-518schematicandbillofmaterials.
5.1PCBLayout
Figure1throughFigure4showthelayoutfortheTPS73x01DRBEVM-518PCB.
NOTE:iguresareintendedtoshowhowtheboardislaid
out;theyarenotintendedtobeusedformanufacturingTPS73x01DRBEVM-518PCBs.
4
TPS73x01DRBEVM-518
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BoardLayout,Schematic,andPartsList
lyLayer
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TPS73x01DRBEVM-518
5
BoardLayout,Schematic,andPartsList
erRouting
6
TPS73x01DRBEVM-518
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BoardLayout,Schematic,andPartsList
LayerAssembly
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7
BoardLayout,Schematic,andPartsList
LayerRouting
8
TPS73x01DRBEVM-518
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BoardLayout,Schematic,andPartsList
5.2SchematicandBOM
4liststhebillofmaterialsforthisEVM.
73x01DRBEVM-518Schematic
+
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TPS73x01DRBEVM-518
9
BoardLayout,Schematic,andPartsList
(2)(3)
73x01DRBEVM-518BillofMaterials
(1)
-01
1
1
0
0
4
1
1
1
1
1
1
1
1
1
-02
1
1
0
0
4
1
1
1
1
1
1
1
1
0
-03
1
1
0
0
4
1
1
1
1
1
1
1
1
0
RefDes
C1
C2
C3
C4
J1,J2,J3,
J4
JP1
JP2
R1
R2
R3
R4
R5
R6
U1
(4)
Value
10µF
2.2µF
—
47µF
Description
Capacitor,ceramic,6.3V,
X5R,10%
Capacitor,ceramic,10V,
X5R,10%
Capacitor,ceramic,16V,
X5R,10%
Capacitor,aluminum,16V,
±20%
Size
0603
0603
0603
0.260×0.307
inch
0.100inch×2
0.100inch×3
0.100inch×5
×2
0603
0603
0603
0603
0603
0603
QFN-8
PartNumber
Std
Std
Std
EEEVFK1C470P
PEC02SAAN
PEC03SAAN
PEC05DAAN
Std
Std
Std
Std
Std
Std
TPS73201DRB
Mfr
Std
Std
Std
Panasonic
Sullins
Sullins
Sullins
Std
Std
Std
Std
Std
Std
Texas
Instruments
Texas
Instruments
Texas
Instruments
3M
Any
PEC02SHeader,male2-pin,100-mil
AANspacing
PEC03SHeader,3-pin,100-mil
AANspacing
PEC05DHeader,male2x5-pin,
AAN100-milspacing
44.2kΩ
88.7kΩ
41.2kΩ
33.2kΩ
29.4kΩ
25.5kΩ
Resistor,chip,1/16W,1%
Resistor,chip,1/16W,1%
Resistor,chip,1/16W,1%
Resistor,chip,1/16W,1%
Resistor,chip,1/16W,1%
Resistor,chip,1/16W,1%
IC,Cap-free,NMOS,250-mA
TPS7320
LDOregulatorwithreverse
1DRB
currentProtection
IC,Cap-free,NMOS,400-mA
TPS7360
LDOregulatorwithreverse
1DRB
currentProtection
TPS7370IC,1-ALDOregulatorwith
1DRBreversecurrentprotection
—
—
Shunt,100-milblack
PCB,FR-4,2-layer,SMOBC,
1.620-in×1.500in×.062in
0
0
2
1
(1)
(2)
(3)
(4)
1
0
2
1
0
1
2
1
U1
U1
—
N/A
QFN-8
QFN-8
0.1
—
TPS73601DRB
TPS73701DRB
929950-00
HPA518**
cautionsmustbeobserved.
o-cleanfluxisnotacceptable.
TheseassembliesmustcomplywithworkmanshipstandardsIPC-A-610Class2.
Componentscanbesubstitutedwithequivalentmanufacturercomponentsexceptwhereindicatedwith**.
10
TPS73x01DRBEVM-518
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EVALUATIONBOARD/KITIMPORTANTNOTICE
TexasInstruments(TI)providestheenclosedproduct(s)underthefollowingconditions:
Thisevaluationboard/kitisintendedforuseforENGINEERINGDEVELOPMENT,DEMONSTRATION,OREVALUATIONPURPOSES
ONLYandisnoshandlingtheproduct(s)musthave
,thegoodsbeingprovidedarenotintendedtobecomplete
intermsofrequireddesign-,marketing-,and/ormanufacturing-relatedprotectiveconsiderations,includingproductsafetyandenvironmental
measurestypicallyfoundinendpraluationboard/kitdoes
notfallwithinthescopeoftheEuropeanUniondirectivesregardingelectromagneticcompatibility,restrictedsubstances(RoHS),recycling
(WEEE),FCC,CEorUL,andthereforemaynotmeetthetechnicalrequirementsofthesedirectivesorotherrelateddirectives.
Shouldthisevaluationboard/kitnotmeetthespecificationsindicatedintheUser’sGuide,theboard/kitmaybereturnedwithin30daysfrom
EGOINGWARRANTYISTHEEXCLUSIVEWARRANTYMADEBYSELLERTOBUYER
ANDISINLIEUOFALLOTHERWARRANTIES,EXPRESSED,IMPLIED,ORSTATUTORY,INCLUDINGANYWARRANTYOF
MERCHANTABILITYORFITNESSFORANYPARTICULARPURPOSE.
Theuserassumesr,theuserindemnifiesTIfromallclaims
heopenconstructionoftheproduct,itistheuser’sresponsibilitytotakeanyandall
appropriateprecautionswithregardtoelectrostaticdischarge.
EXCEPTTOTHEEXTENTOFTHEINDEMNITYSETFORTHABOVE,NEITHERPARTYSHALLBELIABLETOTHEOTHERFORANY
INDIRECT,SPECIAL,INCIDENTAL,ORCONSEQUENTIALDAMAGES.
TIcurrentlydealswithavarietyofcustomersforproducts,andthereforeourarrangementwiththeuserisnotexclusive.
TIassumesnoliabilityforapplicationsassistance,customerproductdesign,softwareperformance,orinfringementofpatentsor
servicesdescribedherein.
PleasereadtheUser’sGuideand,specifically,theWarningsandRestrictionsnoticeintheUser’
noticitionalinformationonTI’senvironmentaland/or
safetyprograms,/esh.
NolicenseisgrantedunderanypatentrightorotherintellectualpropertyrightofTIcoveringorrelatingtoanymachine,process,or
combinationinwhichsuchTIproductsorservicesmightbeorareused.
FCCWarning
Thisevaluationboard/kitisintendedforuseforENGINEERINGDEVELOPMENT,DEMONSTRATION,OREVALUATIONPURPOSES
ONLYandisnorates,uses,andcanradiateradio
frequencyenergyandhasnotbeentestedforcompliancewiththelimitsofcomputingdevicespursuanttopart15ofFCCrules,whichare
designeionofthisequipmentinotherenvironmentsmay
causeinterferencewithradiocommunications,inwhichcasetheuserathisownexpensewillberequiredtotakewhatevermeasuresmay
berequiredtocorrectthisinterference.
EVMWARNINGSANDRESTRICTIONS
ItisimportanttooperatethisEVMwithintheinputvoltagerangeof 1.7Vto 5.5Vandtheoutputvoltagerangeof 1.2Vto 3.3V.
Exceedingthespecifiedinputrangemaycauseunexpectedoperationand/earequestions
concerningtheinputrange,pleasecontactaTIfieldrepresentativepriortoconnectingtheinputpower.
Applyingloadsoutsideofthespecifiedoutputrangemayresultinunintendedoperationand/orpossiblepermanentdamagetotheEVM.
PleaseconsulttheEVMUser'eisuncertaintyastotheloadspecification,
pleasecontactaTIfieldrepresentative.
Duringnormaloperation,somecircuitcomponentsmayhavecasetemperaturesgreaterthan +85°isdesignedtooperate
properlywithcertaincomponentsabove +85°omponentsincludebutare
notlimitedtolinearregulators,switchingtransistors,passtransistors,ypesofdevicescanbeidentified
usingtheEVMschematiclocatedintheEVMUser'acingmeasurementprobesnearthesedevicesduringoperation,
pleasebeawarethatthesedevicesmaybeverywarmtothetouch.
MailingAddress:TexasInstruments,PostOfficeBox655303,Dallas,Texas75265
Copyright©2009,TexasInstrumentsIncorporated
TPS73201DRBEVM-518