BBBhttp

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com1SLUU396A–January2010–RevisedJuly2010SubmitDocumentationFeedbackCopyright2010,TexasInstrumentsIncorporated1Trademarks2SLUU396A–January2010–RevisedJuly2010SubmitDocumentationFeedbackCopyright2010,TexasInstrumentsIncorporatedbq2461x/bq2463xEVM(HPA422)Multi-CellSynchronousSwitch-ModeChargerUser'sGuideSLUU396A–January2010–RevisedJuly2010bq2461x/bq2463xEVM(HPA422)Multi-CellSynchronousSwitch-ModeChargerContents2Introduction32.
1EVMFeatures32.
2GeneralDescription32.
3I/ODescription32.
41.
4ControlsandKeyParametersSetting42.
5RecommendedOperatingConditions.
43TestSummary.
53.
1Definitions.
53.
2Equipment53.
3EquipmentSetup.
63.
4Procedure.
74PCBLayoutGuideline.
95BillofMaterials,BoardLayoutandSchematics.
115.
1BillofMaterials116BoardLayout.
147Schematics.
22ListofFigures1OriginalTestSetupforHPA422(bq2461x/bq2463xEVM)62TopLayer1432ndLayer1543rdLayer165BottomLayer.
176TopAssembly.
187BottomAssembly.
198TopSilkscreen.
209BottomSilkscreen.
2110bq2461x/bq2463xEVMSchematic22ListofTables1I/ODescription32ControlsandKeyParametersSetting43RecommendedOperatingConditions.
44BillofMaterials11www.
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1EVMFeaturesEvaluationModuleForbq2461x/bq2463xHighEfficiencySynchronousBuckChargerUser-programmableupto26VBatteryVoltageACAdapterOperatingRange5V–28VLEDIndicationforControlandStatusSignals.
TestPointsforKeySignalsAvailableforTestingPurpose.
EasyProbeHook-up.
JumpersAvailable.
EasytoChangeConnections.
2.
2GeneralDescriptionThebq2461xishighlyintegratedLi-ionorLi-polymerswitch-modebatterychargecontrollers.
Thebq2463xishighlyintegratedswitch-modebatterychargecontrollersdesignedspecificallytochargeLithiumPhosphatebatterychemistries.
Theyofferaconstant-frequencysynchronousPWMcontrollerwithhighaccuracychargecurrentandvoltageregulation,adaptercurrentregulation,termination,chargepreconditioning,andchargestatusmonitoring,Thebq2461x/bq2463xchargesthebatteryinthreephases:preconditioning,constantcurrent,andconstantvoltage.
Chargeisterminatedwhenthecurrentrechesaminimumuser-selectablelevel.
Aprogrammablechargetimerprovidesasafetybackupforchargetermination.
Thebq2461x/bq2463xautomaticallyrestartsthechargecycleifthebatteryvoltagefallsbelowaninternalthreshold,andentersalow-quiescentcurrentsleepmodewhentheinputvoltagefallsbelowthebatteryvoltage.
Thedynamicpowermanagement(DPM)functionmodifiesthechargecurrentdependingonsystemloadconditions,avoidingacadapteroverload.
Highaccuracycurrentsenseamplifiersenableaccuratemeasurementoftheacadaptercurrent,allowingmonitoringofoverallsystempower.
Fordetails,seebq24610andbq24617(SLUS892),bq24616(SLUSA49)andbq2463x(SLUS894)datasheets.
ProjectcollateraldiscussedinthisdocumentcanbedownloadedfromthefollowingURL:http://www.
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com/lit/zip/SLUU396.
2.
3I/ODescriptionTable1.
I/ODescriptionJackDescriptionJ1–DCINACadapter,positiveoutputJ1–GNDACadapter,negativeoutputJ2–VEXTExternalpowersupply,positiveoutputJ2–GNDExternalpowersupply,negativeoutputJ2–TTCTimercapacitorpinJ3–ACSETInputcurrentprogrampinJ3–ISET1ChargeCurrentProgramPinJ3–ISET2Pre-charge/TerminationprogrampinJ3–GNDGroundJ–PGPowerGood(activelow)J4–CHGENChargeenableJ4–VREFICreferencevoltageVREFJ4–TSTemperatureQualificationVoltageInputJ5–VSYSConnectedtosystemIntroductionwww.
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I/ODescription(continued)JackDescriptionJ5–VBATConnectedtobatterypackJ5–GNDGroundJP1–LOWGroundJP1–TTCTimercapacitorpinJP1–HIPull-upvoltagesourceJP2–HIPull-upvoltagesourceJP2–LEDPWRLEDPull-uppowerlineJP3–VREFICreferencevoltageVREFJP3–VPULLUPPull-upvoltagesourceJP3–EXTExternalvoltagesupplyfromJ2JP4–VCCPull-upvoltagesourceofACDRVandBATDRVLEDlogiccircuitJP4–VCOMQ7andQ11commonsourceJP5–HIPull-upvoltagesourceJP5–CHGENChargeenable2.
41.
4ControlsandKeyParametersSettingTable2.
ControlsandKeyParametersSettingJackDescriptionFactorySettingJP1TTCsetting1-2:ConnectTTCtoGROUND(Disableterminationandthesafetytimer)2-3:ConnectTTCtoVPULLUP(Allowtermination,butdisablethesafetytime)2floating:Allowtermination,CTTCsetsthesafetytimerJumperon2-3(TTCandVPULLUP)JP2Thepull-uppowersourcesuppliestheLEDswhenon.
LEDhasnopowersourcewhenoff.
JumperOnJP3VPULLUPsetting1-2:ConnectVPULLUPtoVREF2-3:ConnectVPULLUPtoVEXTJumperOn1-2(VPULLUPandVREF)JP4Thepull-upvoltagesourceofACDRVandBATDRVLEDlogiccircuit.
JumperonJP5CHGENsettingJumperon:CHGENtoVPULLUPJumperoff:CHGENissettolowbypulldownresistor.
JumperOff2.
5RecommendedOperatingConditionsTable3.
RecommendedOperatingConditionsSymbolDescriptionMinTypMaxUnitSupplyvoltage,VINInputvoltagefromacadapterinput52424(617)28(610/616/63x)VBatteryvoltage,VBATVoltageappliedatVBATterminalofJ52.
1(61x)1.
8(63x)21(61x)18(63x)VSupplycurrent,IACMaximuminputcurrentfromacadapterinput04.
5AChargecurrent,IchrgBatterychargecurrent238AOperatingjunctiontemperaturerange,TJ0125°CThebq2461x/bq2463xEVMboardrequiresaregulatedsupplyapproximately0.
5Vminimumabovetheregulatedvoltageofthebatterypacktoamaximuminputvoltageof28VDC.
www.
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VBAT=2.
1V*[1+R25/R28];forbq2461x;VBAT=1.
8V*[1+R25/R28];forbq2463x;Adjusttheinputvoltageasrequired.
Outputsettooperateat21V(bq2461x)or18V(bq2463x)fromthefactory.
3TestSummary3.
1DefinitionsThisproceduredetailshowtoconfiguretheHPA422evaluationboard.
Onthetestprocedurethefollowingnamingconventionsarefollowed.
SeetheHPA422schematicfordetails.
VXXX:Externalvoltagesupplyname(VADP,VBT,VSBT)LOADW:Externalloadname(LOADR,LOADI)V(TPyyy):VoltageatinternaltestpointTPyyy.
Forexample,V(TP12)meansthevoltageatTP12V(Jxx):VoltageatjackterminalJxx.
V(TP(XXX)):Voltageattestpoint"XXX".
Forexample,V(ACDET)meansthevoltageatthetestpointwhichismarkedas"ACDET".
V(XXX,YYY):VoltageacrosspointXXXandYYY.
I(JXX(YYY)):CurrentgoingoutfromtheYYYterminalofjackXX.
Jxx(BBB):TerminalorpinBBBofjackxxJxxON:InternaljumperJxxterminalsareshortedJxxOFF:InternaljumperJxxterminalsareopenJxx(-YY-)ON:InternaljumperJxxadjacentterminalsmarkedas"YY"areshortedMeasure:→A,BCheckspecifiedparametersA,B.
Ifmeasuredvaluesarenotwithinspecifiedlimitstheunitundertesthasfailed.
Observe→A,BObserveifA,Boccur.
Iftheydonotoccur,theunitundertesthasfailed.
Assemblydrawingshavelocationforjumpers,testpointsandindividualcomponents.
3.
2Equipment3.
2.
1PowerSuppliesPowerSupply#1(PS#1):apowersupplycapableofsupplying30-Vat5-Aisrequired.
PowerSupply#2(PS#2):apowersupplycapableofsupplying5-Vat1-Aisrequired.
PowerSupply#3(PS#3):apowersupplycapableofsupplying5-Vat1-Aisrequired.
3.
2.
2LOAD#1A30V(orabove),5A(orabove)electronicloadthatcanoperateatconstantcurrentmode3.
2.
3LOAD#2AKepcobipolaroperationalpowersupply/amplifier,0±30V(orabove),0±6A(orabove).
3.
2.
4OscilloscopeTektronixTDS3054scopeorequivalent,10Xvoltageprobe.
TestSummarywww.
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2.
5METERSSevenFluke75multimeters,(equivalentorbetter)Or:Fourequivalentvoltagemetersandthreeequivalentcurrentmeters.
Thecurrentmetersmustbecapableofmeasuring5A+current3.
3EquipmentSetup1.
Setthepowersupply#1for0V±100mVDC,5.
0±0.
1Acurrentlimitandthenturnoffsupply.
2.
Connecttheoutputofpowersupply#1inserieswithacurrentmeter(multimeter)toJ1(VIN,GND).
3.
ConnectavoltagemeteracrossJ1(VIN,GND).
4.
Setthepowersupply#2for0V±100mVDC,1.
0±0.
1Acurrentlimitandthenturnoffsupply.
5.
Connecttheoutputofthepowersupply#2toJ4andJ5(TS,GND).
6.
ConnectLoad#1inserieswithacurrentmetertoJ5(SYS,GND).
TurnoffLoad#17.
ConnectLoad#2inserieswithacurrentmetertoJ5(BAT,GND).
TurnoffLoad#2.
8.
ConnectavoltagemeteracrossJ5(BAT,GND).
9.
Connectanoscilloscope'sprobeacrossJ5(BAT,GND)10.
ConnectavoltagemeteracrossJ5(SYS,GND).
11.
JP1(TTCandHI):ON,JP2:ON,JP3(VPULLUPandVREF):ON,JP4:ON,JP5:OFF.
Aftertheabovesteps,thetestsetupforHPA422isshowninFigure1.
Figure1.
OriginalTestSetupforHPA422(bq2461x/bq2463xEVM)www.
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4Procedure3.
4.
1ACAdapterDetectionThreshold1.
MakesureEQUIPMENTSETUPstepsarefollowed.
TurnonPS#2.
2.
TurnonPS#1Measure→V(J5(SYS))=0±500mVMeasure→V(TP(VREF))=0V±1000mVMeasure→V(TP(REGN))=0V±500mV3.
IncreasetheoutputvoltageonPS#1untilD5(PG)onbutdonotexceed5V.
Setthepowersupply#2to1.
8V±100mVDCMeasure→V(J1(VIN))=4.
5V±0.
5VMeasure→V(J5(SYS))=4.
5V±0.
5VMeasure→V(TP(VREF))=3.
3V±200mVMeasure→V(TP(REGN))=0V±500mVMeasure→D4(/ACDRV)on,D5(PG)on3.
4.
2ChargerRegulationVoltage1.
IncreasethevoltageofPS#1untilV(J1(VIN))=24V±0.
1V.
Measure→V(J5(BAT,GND))=0V±1V2.
PutJP5on(Enablethecharging).
Observe→D3(CE)on.
Measure→PeakV(J5(BAT))=21.
0V±1V(bq2461x)Measure→PeakV(J5(BAT))=18.
0V±1V(bq2463x)Measure→V(TP(REGN))=6V±500mV3.
4.
3ChargeCurrentandACCurrentRegultion(DPM)1.
TakeoffJP5(Disablethecharging).
2.
ConnecttheLoad#2inserieswithacurrentmeter(multimeter)toJ5(BAT,GND).
MakesureavoltagemeterisconnectedacrossJ5(BAT,GND).
TurnontheLoad#2.
Settheoutputvoltageto12V(bq2461x)or2V(bq2463x).
3.
ConnecttheoutputoftheLoad#1inserieswithacurrentmeter(multimeter)toJ5(SYS,GND).
MakesureavoltagemeterisconnectedacrossJ5(SYS,GND).
TurnonthepoweroftheLoad#1.
Settheloadcurrentto3.
0A±50mAbutdisabletheload#1.
ThesetupisnowlikeFigure1forHPA422.
MakesureIbat=0A±10mAandIsys=0A±10mA.
4.
PutJP5on(Enablethecharging).
Observe→D3(CE)onMeasure→Ibat=300mA±200mA(bq2461x)Measure→Ibat=125mA±60mA(bq2463x)Observe→D7(STAT1)on;D8(STAT2)off.
5.
SettheLoad#2outputvoltageto16.
5V.
Measure→Ibat=3000mA±300mAObserve→D7(STAT1)on;D8(STAT2)off.
6.
EnabletheoutputoftheLoad#1Measure→Isys=3000mA±200mA,Ibat=1400mA±500mA,Iin=4000mA±500mA7.
TurnofftheLoad#1.
Measure→Isys=0±100mA,Ibat=3000mA±300mA.
8.
IncreasetheLoad#2outputvoltagefrom16.
5Vto22V(61x)or19V(63x).
Measure→Isys=0±100mA,Ibat=0mA±100mA.
TestSummarywww.
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9.
DecreasetheLoad#2outputvoltagebackto16.
5V.
Observe→D7(STAT1)on;D8(STAT2)off.
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4.
4ChargerCut-OffbyThermistor1.
SlowlyincreasetheoutputvoltageofPS2untilIbat=0±10mA.
Measure→V(J4(TS))=2.
44V±200mVObserve→D7(STAT1)off;D8(STAT2)off.
2.
SlowlydecreasetheoutputvoltageofPS2to1.
4V±0.
1V.
Measure→V(J4(TS))=1.
4V±100mVMeasure→Ibat=3000mA±300mA(bq24610/617)Measure→Ibat=0mA±100mA(bq24616)Measure→Ibat=375mA±150mA(bq2463x)Observe→D7(STAT1)on;D8(STAT2)off(bq24610/617/630)Observe→D7(STAT1)off;D8(STAT2)off(bq24616)3.
SlowlydecreasetheoutputvoltageofPS2.
Chargewillresume.
ContinuetodecreasetheoutputvoltageofPS2slowlyuntilIbat=0±10mA.
Measure→V(J4(TS))=1.
14V±200mVObserve→D7(STAT1)off;D8(STAT2)off.
4.
SlowlyincreasetheoutputvoltageofPS2to1.
8V±100mV.
Measure→Ibat=3000mA±200mAObserve→D7(STAT1)on;D8(STAT2)off.
3.
4.
5PowerPathSelection1.
TakeoffJP5(Disablethecharging)Observe→D3(CE)off;D7(STAT1)off.
2.
SetJP3JumperOn2-3(VPULLUPandVEXT).
Connecttheoutputofthepowersupply#3toJ2(VEXT,GND).
Setthepowersupply#3for3.
3V±200mVDC,1.
0±0.
1Acurrentlimit.
3.
SettheLoad#2outputvoltageto16.
5V±500mV.
4.
Measure→V(J5(SYS))=24V±1V(adapterconnectedtosystem)Observe→D4(ACDRV)on,D6(BATDRV)off,D5(PG)on,D7(STAT1)off,D8(STAT2)off.
5.
TurnoffPS#1.
6.
Measure→V(J5(SYS))=16.
5V±0.
5V(batteryconnectedtosystem)7.
Observe→D4(ACDRV)off,D6(BATDRV)on,D5(PG)off,D7(STAT1)off,D8(STAT2)off.
8.
Turnoffpowersupply#2and#3.
SetJP3on1-2(VPULLUPandVREF).
4PCBLayoutGuideline1.
Itiscriticalthattheexposedpowerpadonthebacksideofthebq2461x/bq2463xpackagebesolderedtothePCBground.
MakesuretherearesufficientthermalviasrightunderneaththeIC,connectingtothegroundplaneontheotherlayers.
2.
Thecontrolstageandthepowerstageshouldberoutedseparately.
Ateachlayer,thesignalgroundandthepowergroundareconnectedonlyatthepowerpad.
3.
ACcurrentsenseresistormustbeconnectedtoACPandACNwithaKelvincontact.
Theareaofthisloopmustbeminimized.
ThedecouplingcapacitorsforthesepinsshouldbeplacedasclosetotheICaspossible.
4.
ChargecurrentsenseresistormustbeconnectedtoSRP,SRNwithaKelvincontact.
Theareaofthisloopmustbeminimized.
ThedecouplingcapacitorsforthesepinsshouldbeplacedasclosetotheICaspossible.
5.
DecouplingcapacitorsforDCIN,VREF,VCC,REGNshouldmaketheinterconnectionstotheICasshortaspossible.
6.
DecouplingcapacitorsforBATmustbeplacedclosetothecorrespondingICpinsandmaketheinterconnectionstotheICasshortaspossible.
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Decouplingcapacitor(s)forthechargerinputmustbeplacedclosetotopbuckFET'sdrainandbottombuckFET'ssource.
www.
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1BillofMaterialsTable4.
BillofMaterialsbq24610-001bq24617-002Bq24630-003bq24616-004ValueRefDesDescriptionSizePartNumberMfr1000bq24610RGEU1ChargerControllerICQFN-24(RGE)bq24610RGETI0100bq24617RGEU1ChargerControllerICQFN-24(RGE)bq24617RGETI0010bq24630RGEU1ChargerControllerICQFN-24(RGE)bq24630RGETI0001bq24616RGEU1ChargerControllerICQFN-24(RGE)bq24616RGETI11110.
1uFC3Capacitor,Ceramic,16V,X7R,5%,603STDSTD66660.
1uFC7,C8,C13,C18,C19,C33Capacitor,Ceramic,16V,X7R,10%603STDSTD66660.
1uFC4,C5,C16,C17,C24,C26Capacitor,Ceramic,50V,X7R,10%603STDSTD111122pC22Capacitor,Ceramic,50V,X7R,10%603STDSTD0000C9,C21,C30,C31Capacitor,Ceramic,50V,X7R,10%603STDSTD33331.
0uFC1,C6,C15Capacitor,Ceramic,16V,X7R,20%805STDSTD0000C34Capacitor,Ceramic,50V,X7R,10%805STDSTD22221.
0uF/50VC12,C14Capacitor,Ceramic,50V,X5R,20%1206STDSTD11112.
2uF/50VC2Capacitor,Ceramic,50V,X7R,20%1206STDSTD0000C32Capacitor,Ceramic,50V,X7R,20%1206STDSTD666610uF/50VC10,C11,C20,C23,C28,C29Capacitor,Ceramic,50V,Y5V,-20/+80%1812STDSTD0000C25,C27Capacitor,Ceramic,50V,X5R,20%1812STDSTD0000D11Diode,Zener,7.
5V,350-mWSOT-23BZX84C7V5Diodes0000D10Diode,Schottky,200-mA,30-VSOT23BAT54Vishay-Liteon0000D9Diode,Zener,7.
5V,350-mWSOT-23BZX84C7V5Diodes6666GreenD3,D4,D5,D6,D7,D8Diode,LED,Green,2.
1V,20mA,6mcd603LTST-C190GKTLiteOn0000D2Diode,Schottky,1A,40VDO-214AAMBRS140Fairchild1111ZLLS350D1Diode,Schottky,1.
16A,40-VSOD-523ZLLS350Zetex11016.
8uHL1Inductor,SMT,9A,19.
8milliohm0.
520sqinchIHLP5050CEER6R8M01Vishay00108.
2uHL1Inductor,SMT,9.
5A,18.
3milliohm0.
520sqinchIHLP5050CEER8R2M01Vishay3333PEC02SAANJP2,JP4,JP5Header,2pin,100milspacing,0.
100inchx2PEC02SAANSullinsBillofMaterials,BoardLayoutandSchematicswww.
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BillofMaterials(continued)bq24610-001bq24617-002Bq24630-003bq24616-004ValueRefDesDescriptionSizePartNumberMfr2222PEC03SAANJP1,JP3Header,3pin,100milspacing,0.
100inchx3PEC03SAANSullins44440R10,R19,R26,R13Resistor,Chip,1/16W,1%402StdStd111110R22Resistor,Chip,1/4W,1%1206StdStd11009.
31kR4Resistor,Chip,1/16W,1%402StdStd00112.
2kR4Resistor,Chip,1/16W,1%402StdStd33331kR21,R24,R27Resistor,Chip,1/16W,1%402StdStd1111100R8Resistor,Chip,1/16W,1%402StdStd1100430kR5Resistor,Chip,1/16W,1%402StdStd00116.
8kR5Resistor,Chip,1/16W,1%402StdStd11110R17Resistor,Chip,1/16W,1%603StdStd66662.
21kR31,R34,R35,R36,R39,R40Resistor,Chip,1/16W,1%603StdStd111110R14Resistor,Chip,1/16W,1%603StdStd222210kR29,R30Resistor,Chip,1/16W,1%603StdStd6666100kR3,R20,R32,R33,R37,R38Resistor,Chip,1/16W,1%603StdStd111110kR16Resistor,Chip,1/10W,1%805StdStd1111100kR15Resistor,Chip,1/10W,1%805StdStd111122.
1kR12Resistor,Chip,1/10W,1%805StdStd111132.
4kR7Resistor,Chip,1/10W,1%805StdStd4444100kR6,R11,R23,R28Resistor,Chip,1/10W,1%805StdStd1111909kR25Resistor,Chip,1/10W,1%805StdStd22223.
9R1,R2Resistor,Chip,1/8W,5%1206StdStd22220.
01R9,R18Resistor,Chip,1/2W,1%2010WSL2010R0100FEAVishay1111ED1515J2TerminalBlock,3pin,6A,3.
5mm0.
41x0.
25inchED555\3DSOST2222ED1516J3,J4TerminalBlock,4pin,6A,3.
5mm0.
55x0.
25inchED555\4DSOST1111ED120/2DSJ1TerminalBlock,2pin,15A,5.
1mm0.
40x0.
35inchED120/2DSOST1111ED120/4DSJ5TerminalBlock,4pin,15A,5.
1mm0.
80x0.
35inchED120/4DSOSTwww.
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BillofMaterials(continued)bq24610-001bq24617-002Bq24630-003bq24616-004ValueRefDesDescriptionSizePartNumberMfr11115001GNDTestPoint,Black,ThruHoleColorKeyed0.
100x0.
100inch5001Keystone141414145002/ACDRV,/BATDRV,/PG,ACSET,CHGEN,ISET1,ISET2,REGN,STAT1,STAT2,TS,TTC,VCC,VREFTestPoint,White,ThruHoleColorKeyed0.
100x0.
100inch5002Keystone5555131-4244-00TP1,TP2,TP8,TP9,TP12Adaptor,3.
5-mmprobeclip(or131-5031-00)0.
200inch131-4244-00Tektronix33332N7002DICTQ6,Q8,Q9MOSFET,N-ch,60V,115mA,1.
2OhmsSOT232N7002DICTVishay-Liteon3333SI4401BDY-T1-GEFDS4141Q1,Q2,Q5(Note5)MOSFET,PChan,-40V,-18A,9.
2millohmS0-8SI4401BDYFDS4141Vishay-SiliconxiFairchild2222FDS8447Q3,Q4MOSFET,NChan,40V,50A,4.
5millohmS0-8FDS8447Vishay-Siliconix2222TP0610KQ7,Q10Mosfet,P-Ch,60V,Rds6ohms,Id185mASOT-23TP0610KVishay-Siliconix1111PCB4layer2oz.
PCBHPA4225555929950-00Shortingjumpers,2-pin,100milspacing929950-003M/ESD4444STANDOFFM/FHEX6-32NYL.
500"4816Keystone44446-32NYLHexnutsNYHN632BuildingFastenersBoardLayoutwww.
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TopLayerwww.
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2ndLayerBoardLayoutwww.
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3rdLayerwww.
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comBoardLayout17SLUU396A–January2010–RevisedJuly2010SubmitDocumentationFeedbackCopyright2010,TexasInstrumentsIncorporatedbq2461x/bq2463xEVM(HPA422)Multi-CellSynchronousSwitch-ModeChargerFigure5.
BottomLayerBoardLayoutwww.
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com18SLUU396A–January2010–RevisedJuly2010SubmitDocumentationFeedbackCopyright2010,TexasInstrumentsIncorporatedbq2461x/bq2463xEVM(HPA422)Multi-CellSynchronousSwitch-ModeChargerFigure6.
TopAssemblywww.
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comBoardLayout19SLUU396A–January2010–RevisedJuly2010SubmitDocumentationFeedbackCopyright2010,TexasInstrumentsIncorporatedbq2461x/bq2463xEVM(HPA422)Multi-CellSynchronousSwitch-ModeChargerFigure7.
BottomAssemblyBoardLayoutwww.
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com20SLUU396A–January2010–RevisedJuly2010SubmitDocumentationFeedbackCopyright2010,TexasInstrumentsIncorporatedbq2461x/bq2463xEVM(HPA422)Multi-CellSynchronousSwitch-ModeChargerFigure8.
TopSilkscreenwww.
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comBoardLayout21SLUU396A–January2010–RevisedJuly2010SubmitDocumentationFeedbackCopyright2010,TexasInstrumentsIncorporatedbq2461x/bq2463xEVM(HPA422)Multi-CellSynchronousSwitch-ModeChargerFigure9.
BottomSilkscreenSchematicswww.
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com22SLUU396A–January2010–RevisedJuly2010SubmitDocumentationFeedbackCopyright2010,TexasInstrumentsIncorporatedbq2461x/bq2463xEVM(HPA422)Multi-CellSynchronousSwitch-ModeCharger7SchematicsFigure10.
bq2461x/bq2463xEVMSchematicEvaluationBoard/KitImportantNoticeTexasInstruments(TI)providestheenclosedproduct(s)underthefollowingconditions:Thisevaluationboard/kitisintendedforuseforENGINEERINGDEVELOPMENT,DEMONSTRATION,OREVALUATIONPURPOSESONLYandisnotconsideredbyTItobeafinishedend-productfitforgeneralconsumeruse.
Personshandlingtheproduct(s)musthaveelectronicstrainingandobservegoodengineeringpracticestandards.
Assuch,thegoodsbeingprovidedarenotintendedtobecompleteintermsofrequireddesign-,marketing-,and/ormanufacturing-relatedprotectiveconsiderations,includingproductsafetyandenvironmentalmeasurestypicallyfoundinendproductsthatincorporatesuchsemiconductorcomponentsorcircuitboards.
Thisevaluationboard/kitdoesnotfallwithinthescopeoftheEuropeanUniondirectivesregardingelectromagneticcompatibility,restrictedsubstances(RoHS),recycling(WEEE),FCC,CEorUL,andthereforemaynotmeetthetechnicalrequirementsofthesedirectivesorotherrelateddirectives.
Shouldthisevaluationboard/kitnotmeetthespecificationsindicatedintheUser'sGuide,theboard/kitmaybereturnedwithin30daysfromthedateofdeliveryforafullrefund.
THEFOREGOINGWARRANTYISTHEEXCLUSIVEWARRANTYMADEBYSELLERTOBUYERANDISINLIEUOFALLOTHERWARRANTIES,EXPRESSED,IMPLIED,ORSTATUTORY,INCLUDINGANYWARRANTYOFMERCHANTABILITYORFITNESSFORANYPARTICULARPURPOSE.
Theuserassumesallresponsibilityandliabilityforproperandsafehandlingofthegoods.
Further,theuserindemnifiesTIfromallclaimsarisingfromthehandlingoruseofthegoods.
Duetotheopenconstructionoftheproduct,itistheuser'sresponsibilitytotakeanyandallappropriateprecautionswithregardtoelectrostaticdischarge.
EXCEPTTOTHEEXTENTOFTHEINDEMNITYSETFORTHABOVE,NEITHERPARTYSHALLBELIABLETOTHEOTHERFORANYINDIRECT,SPECIAL,INCIDENTAL,ORCONSEQUENTIALDAMAGES.
TIcurrentlydealswithavarietyofcustomersforproducts,andthereforeourarrangementwiththeuserisnotexclusive.
TIassumesnoliabilityforapplicationsassistance,customerproductdesign,softwareperformance,orinfringementofpatentsorservicesdescribedherein.
PleasereadtheUser'sGuideand,specifically,theWarningsandRestrictionsnoticeintheUser'sGuidepriortohandlingtheproduct.
Thisnoticecontainsimportantsafetyinformationabouttemperaturesandvoltages.
ForadditionalinformationonTI'senvironmentaland/orsafetyprograms,pleasecontacttheTIapplicationengineerorvisitwww.
ti.
com/esh.
NolicenseisgrantedunderanypatentrightorotherintellectualpropertyrightofTIcoveringorrelatingtoanymachine,process,orcombinationinwhichsuchTIproductsorservicesmightbeorareused.
FCCWarningThisevaluationboard/kitisintendedforuseforENGINEERINGDEVELOPMENT,DEMONSTRATION,OREVALUATIONPURPOSESONLYandisnotconsideredbyTItobeafinishedend-productfitforgeneralconsumeruse.
Itgenerates,uses,andcanradiateradiofrequencyenergyandhasnotbeentestedforcompliancewiththelimitsofcomputingdevicespursuanttopart15ofFCCrules,whicharedesignedtoprovidereasonableprotectionagainstradiofrequencyinterference.
Operationofthisequipmentinotherenvironmentsmaycauseinterferencewithradiocommunications,inwhichcasetheuserathisownexpensewillberequiredtotakewhatevermeasuresmayberequiredtocorrectthisinterference.
EVMWarningsandRestrictionsItisimportanttooperatethisEVMwithintheinputvoltagerangeof5Vto28Vandtheoutputvoltagerangeof0Vto26V.
Exceedingthespecifiedinputrangemaycauseunexpectedoperationand/orirreversibledamagetotheEVM.
Iftherearequestionsconcerningtheinputrange,pleasecontactaTIfieldrepresentativepriortoconnectingtheinputpower.
Applyingloadsoutsideofthespecifiedoutputrangemayresultinunintendedoperationand/orpossiblepermanentdamagetotheEVM.
PleaseconsulttheEVMUser'sGuidepriortoconnectinganyloadtotheEVMoutput.
Ifthereisuncertaintyastotheloadspecification,pleasecontactaTIfieldrepresentative.
Duringnormaloperation,somecircuitcomponentsmayhavecasetemperaturesgreaterthan60°C.
TheEVMisdesignedtooperateproperlywithcertaincomponentsabove125°Caslongastheinputandoutputrangesaremaintained.
Thesecomponentsincludebutarenotlimitedtolinearregulators,switchingtransistors,passtransistors,andcurrentsenseresistors.
ThesetypesofdevicescanbeidentifiedusingtheEVMschematiclocatedintheEVMUser'sGuide.
Whenplacingmeasurementprobesnearthesedevicesduringoperation,pleasebeawarethatthesedevicesmaybeverywarmtothetouch.
MailingAddress:TexasInstruments,PostOfficeBox655303,Dallas,Texas75265Copyright2019,TexasInstrumentsIncorporatedIMPORTANTNOTICEANDDISCLAIMERTIPROVIDESTECHNICALANDRELIABILITYDATA(INCLUDINGDATASHEETS),DESIGNRESOURCES(INCLUDINGREFERENCEDESIGNS),APPLICATIONOROTHERDESIGNADVICE,WEBTOOLS,SAFETYINFORMATION,ANDOTHERRESOURCES"ASIS"ANDWITHALLFAULTS,ANDDISCLAIMSALLWARRANTIES,EXPRESSANDIMPLIED,INCLUDINGWITHOUTLIMITATIONANYIMPLIEDWARRANTIESOFMERCHANTABILITY,FITNESSFORAPARTICULARPURPOSEORNON-INFRINGEMENTOFTHIRDPARTYINTELLECTUALPROPERTYRIGHTS.
TheseresourcesareintendedforskilleddevelopersdesigningwithTIproducts.
Youaresolelyresponsiblefor(1)selectingtheappropriateTIproductsforyourapplication,(2)designing,validatingandtestingyourapplication,and(3)ensuringyourapplicationmeetsapplicablestandards,andanyothersafety,security,orotherrequirements.
Theseresourcesaresubjecttochangewithoutnotice.
TIgrantsyoupermissiontousetheseresourcesonlyfordevelopmentofanapplicationthatusestheTIproductsdescribedintheresource.
Otherreproductionanddisplayoftheseresourcesisprohibited.
NolicenseisgrantedtoanyotherTIintellectualpropertyrightortoanythirdpartyintellectualpropertyright.
TIdisclaimsresponsibilityfor,andyouwillfullyindemnifyTIanditsrepresentativesagainst,anyclaims,damages,costs,losses,andliabilitiesarisingoutofyouruseoftheseresources.
TI'sproductsareprovidedsubjecttoTI'sTermsofSale(www.
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com/legal/termsofsale.
html)orotherapplicabletermsavailableeitheronti.
comorprovidedinconjunctionwithsuchTIproducts.
TI'sprovisionoftheseresourcesdoesnotexpandorotherwisealterTI'sapplicablewarrantiesorwarrantydisclaimersforTIproducts.
MailingAddress:TexasInstruments,PostOfficeBox655303,Dallas,Texas75265Copyright2019,TexasInstrumentsIncorporated