bq25890/892/895/895M EVM (PWR664) User's …

1 1 SLUUBA2B March2015 RevisedNovember2015 SubmitDocumentationFeedbackCopyright 2015,TexasInstrumentsIncorporatedbq25890 EVM,bq25892 EVM,bq25895 EVM,bq25896 EVMandbq25895 MEVM (PWR664) Microsoft,Windowsare registeredtrademarksof 's GuideSLUUBA2B March2015 RevisedNovember2015bq25890 EVM,bq25892 EVM,bq25895 EVM,bq25896 EVMand bq25895 MEVM (PWR664) Thisuser's guideprovidesdetailedtestinginstructions for the PWR664evaluationmodules(EVM)usingthe bq25890 ,bq25892,bq25895,bq25896or bq25895M(bq2589x) the necessaryequipment,equipmentsetup,and referencedocumentationcontainsthe printed-circuitboardlayouts,schematics,a nd the bill of materials(BOM). ,Schematic,and Bill of of of Figures1 VerifyWindows7 the pwr664 (bq2589xEVM)..54 StartWindowof the SelectWindowof the the March2015 RevisedNovember2015 SubmitDocumentationFeedbackCopyright 2015,TexasInstrumentsIncorporatedbq25890 EVM,bq25892 EVM,bq25895 EVM,bq25896 EVMandbq25895 MEVM( pwr664 ) of of of of of of detailedfeaturesand operation,referto Table1 for a list of devicesand DeviceDataSheetsDeviceDocumentbq25890/bq 25892 SLUSBU7bq25895 SLUSC74bq25895 MSLUSCB5bq25896 SLUSCF7 The bq2589xevaluationmodule(EVM)is a completechargermodulesfor evaluatingan I2C-controlledsingleNVDC-1chargeusingthe EVMdoesn t includethe evaluatethe EVM,a USB-to-GPIO interfaceboardmustbe DescriptionsTable2 lists the jumperconnectionsavailableon this EVMC onnectionsJackDescriptionJ1 VBUSI nput:positiveterminalJ1 GNDI nput.

2 Negativeterminal(groundterminal)J2 PMIDPMIDpin connection/PowerbankoutputJ2 GNDG round/PowerbankoutputnegativeterminalJ3 SYSC onnectedto systemJ3 GNDG roundJ4 BAT+Connectedto batterypackJ4 GNDG roundJ5 Inputmini-USBportJ6 Outputmini-USBportJ7 USB-to-GPIO connectorJ8I2C March2015 RevisedNovember2015 SubmitDocumentationFeedbackCopyright 2015,TexasInstrumentsIncorporatedbq25890 EVM,bq25892 EVM,bq25895 EVM,bq25896 EVMandbq25895 MEVM (PWR664) Table3 lists the JumperConnectionsJackDescriptionFactoryS ettingJP1 For bq25892/6inputcurrentsetting:Low:adaptor port;High:USBinputbq25890/5/5M:Not installed;bq25892/6:shortPSELto LOWJP2D /PG pin selectionbq25890/5/5M:shortto D ; bq25892/6:shortto PGJP3 Pin 24 selection:to DSEL,PG, or NCbq25890/5/5M_DSEL:shortto DSEL;bq25892/6:not installedJP4 STAT,PG, CE, INT, OTGpins internalpullupsource(VSYSor BAT)Shortto VSYSJP5D+/D connectionsfor inputcurrentlimit settingbq25890/5/5M:installed.

3 Bq25892/6:Not installedJP6 USBcurrentlimit selectionpin duringbuckmodeand PSELis high/Enablepin duringboostmodeNot installedJP7CE pin setting:pull low to enablethe chargeNot InstalledJP8TS pin to GNDNot InstalledJP9TS resistordividerpullupsource(REGN)connect ionInstalledJP10 Internal10 k to GNDto TS pinInstalledTable4 lists the recommendedoperatingconditionsfor this RecommendedOperatingConditionsSymbolDesc riptionMINTYPMAXUnitSupplyvoltage,VINbq2 5890/2/5/5M/6 InputvoltagefromAC ,VBAT0 VVoltageappliedat ,IINM aximuminputcurrentfromAC March2015 RevisedNovember2015 SubmitDocumentationFeedbackCopyright 2015,TexasInstrumentsIncorporatedbq25890 EVM,bq25892 EVM,bq25895 EVM,bq25896 EVMandbq25895 MEVM( pwr664 ) sectionincludesa list of suppliesrequiredto performtestson this #1 (PS#1):a powersupplycapableof supplying5 V at 1 A is partcan handlelargervoltageand current,it is not necessaryfor this #1(4-QuadrantSupply,ConstantVoltage< V)A 0 20 V/0 5 A, > 30-Wsystem,DC electronicload and settingas constantvoltageload :Kepcoload:BOP20 5M, DC 0 to 20 V, 0 to 5 A (or higher).

4 #2 Use with BoostModePMIDto GNDload,10 , 5 W or Fluke75 multimeters,(equivalentor better).Or:Fourequivalentvoltagemetersan d two currentmetersmustbecapableof measuring5 A+ computerwith at leastone USBport and a bq2589xEVMevaluationsoftwaremustbe (EV2300 USB-BasedPC InterfaceBoard) installationfile, softwaresupportsthe Microsoft Windows XP and Windows7 Windows7 64-bitusers: computerWindows7 settingsby rightclickingon computerand selectingproperties:Figure1. VerifyWindows7 PropertiesWindowsXP or Windows7 32-bitusersmustaccessthe following: J1 J 2 BATGNCIN SYGND MPOUT 3V3 SDA SCL APPLICATION CIRCUIT PWR583 bq24780 EVM TP1 UV V I Powesupply #1 VIN J1 GNDJ 3 BATGND SYS Application Circuit pwr664 bq2589xMEVM TP1 U1V USB V EV2300 PowerSupply #1 J4 V V March2015 RevisedNovember2015 SubmitDocumentationFeedbackCopyright 2015,TexasInstrumentsIncorporatedbq25890 EVM,bq25892 EVM,bq25895 EVM,bq25896 EVMandbq25895 MEVM( pwr664 ) Set PS#1for 5-V DC, 1-A currentlimit and thenturn off the Connectthe outputof PS#1in serieswith a currentmeter(multimeter)to J1 (VBUSand GND).

5 3. Connecta voltagemeteracrossTP3 (VBUS)and TP6 (PGND).4. Turnon the Load,set to constantvoltagemodeand outputto V. Turnoff (disable) serieswith a currentmeter(multimeter),groundside,to J4 (BAT+and GND)as Connecta voltagemeteracrossJ4 (BAT+and GND).6. Connectthe EV2300 USBinterfaceboardto the computerwith a USBcableand fromI2C port to J8with the connectionsare shownin Removejumper(if installed) Connectionsof the EV23008. Installshuntsas shownin OriginalTestSetupfor pwr664 (bq2589xEVM) March2015 RevisedNovember2015 SubmitDocumentationFeedbackCopyright 2015,TexasInstrumentsIncorporatedbq25890 EVM,bq25892 EVM,bq25895 EVM,bq25896 EVMandbq25895 MEVM (PWR664) 9. Turnon the bq2589xevaluationsoftware,chooseChargera s showninFigure4, thenchoosethe file as shownin StartWindowof the bq2589xEvaluationSoftwareFigure5 illustratesthe followingpart selectionoptions: Selectthe , if evaluatingthe bq25890or bq25895 ,if evaluatingthe bq25892 Figure5.

6 PartSelectWindowof the March2015 RevisedNovember2015 SubmitDocumentationFeedbackCopyright 2015,TexasInstrumentsIncorporatedbq25890 EVM,bq25892 EVM,bq25895 EVM,bq25896 EVMandbq25895 MEVM (PWR664) 10. If an errorpopsup statingthe communicationsadapterwas not found(Figure6), clickOK to ,unplugand re-plugthe CommunicationsAdapterErrorIf an errorpopsup statingthereis no acknowledgefromthe device(Figure7), clickOK to proceedandthenpick the appropirateI2C addressfromthe drop-downmenuin the GUI (seethe Proceduresection).Figure7. AcknowledgeErrorCheckthe connectionstatusof the EV2300in bqStudioby goingtoView DashBoard. A panelonthe left-handside shouldappear,with the statusof the EV2300at the top (Figure8).Figure8. March2015 RevisedNovember2015 SubmitDocumentationFeedbackCopyright 2015,TexasInstrumentsIncorporatedbq25890 EVM,bq25892 EVM,bq25895 EVM,bq25896 EVMandbq25895 MEVM (PWR664) 11.

7 ChooseFieldView, as shownin Figure9. The mainwindowof the bq2589xsoftwareis SelectFieldViewFigure10. MainWindowof the March2015 RevisedNovember2015 SubmitDocumentationFeedbackCopyright 2015,TexasInstrumentsIncorporatedbq25890 EVM,bq25892 EVM,bq25895 EVM,bq25896 EVMandbq25895 MEVM( pwr664 ) In the EVMsoftware,specifydevice I2C Address as D6 for bq25892/6,and D4 for bq25890 EnableLoad# , step 4. ClicktheReadbutton3. In the EVMGUI software(seeexamplescreenshot below), makethe followingchangesasnecessary: Select Disabled for the WatchdogTimer Select"ForceVINDPM" Set InputVoltageLimit to Set InputCurrentLimit to 500 mA Set ChargeVoltageLimit to Set FastChargeCurrent ICHGto 960 mA Set "MinimumSystemVoltage" to Set Pre-ChargeCurrent to 256 mA Select"ChargeEnable" Deselect"EnableILIMpin" Deselect"EnableICD" Deselect EnableTermination March2015 RevisedNovember2015 SubmitDocumentationFeedbackCopyright 2015,TexasInstrumentsIncorporatedbq25890 EVM,bq25892 EVM,bq25895 EVM,bq25896 EVMandbq25895 MEVM( pwr664 ) Turnon PS#1,clicktheReadbuttontwice: Observe EverythingNormalatFaultbox Observe D3 (STAT)is on Observe D4 (PG) is on (bq25892/6)2.

8 Measurethe voltageacrossJ3 and J4 as follows: Measure V(TP4(SYS),TP7(GND))= 300 mV Measure V(TP5(BAT),TP7(GND))= V 200 mV3. Changeload to V Measure I(BAT)= 625 mA 100 mA Measure V(TP5(BAT),TP7(GND))= V 200 mV Measure I(VBUS)= 500 mA Turnoff and disconnectPS#12. If the constantvoltageload connectedfromBAT+to GNDis not a four-quadrantsupply(sourcescurrent),remo vethe load and use the powersourcedisconnectedin step one,set to 2-Acurrentlimit and connectbetweenBAT+and GND3. ChecktheOTGconfigurationsoptionin the GUI4. Apply10 (5 W or greater)acrossJ2 (PMID(+)to GND( )) Measure:V:(TP2(PMID)and TP6 (GND))= V 200 The leads/cablesto the variouspowersupplies,batteriesand currentmetersalso chargerdynamicallyreduceschargecurrentde pendingon thevoltagesensedat its VBUSpin (usingthe VINDPM feature),BATpin (as part of normaltermination)and TS pin (throughits batterytemperaturemonitoringfeaturevia batterythermistor).

9 Therefore,youmustuse voltmetersto measurethe voltageas closeto the IC pins as possibleinsteadof relyingonthe powersupply's a batterythermistoris not available,eitherdisablethe TSfunctionor replacewith an appropriatelysized(typically)10 k Whenusinga sourcemeterthat can sourceand sink currentas yourbatterysimulator,it is highlyrecommendedto add a large(1000 F+) capacitorat the EVMBATand GNDconnectorsin ordertopreventoscillationsat the BATpin due to mismatchedimpedancesof the chargeroutputandsourcemeterinputwithinth eirrespectiveregulationloop sourcemeterfor4-wiresensingeliminatesthe needfor a separatevoltmeterto measurethe voltageat the ,alwaysensurethat the sensingleadsare connectedin orderto preventaccidentalovervoltageby the For precisemeasurementsof chargecurrentand batteryregulationneartermination,the March2015 RevisedNovember2015 SubmitDocumentationFeedbackCopyright 2015,TexasInstrumentsIncorporatedbq25890 EVM,bq25892 EVM,bq25895 EVM,bq25896 EVMandbq25895 MEVM( pwr664 )

10 In serieswith the batteryor batterysimulatorshouldnot be set to auto-rangeand may alternatemethodfor measuringchargecurrentis to eitheruse an oscilloscopewith hall effectcurrentprobeor placea 1% or better,thermallycapable(for example, in 1210or largerfootprint)resistorin seriesbetweenthe BATpin and batteryand measurethe voltageacrossthat switchingnoderise and fall timesfor thecomponentsminimizinghigh-frequencycur rentpathloop is importantto preventelectricaland magneticfield radiationand PCBlayoutprioritylist mustbe followedin theorderpresentedfor properlayout:1. Placethe inputcapacitoras closeas possibleto the PMIDand GNDpin connectionsand use theshortestpossiblecoppertraceconnection or Placethe inductorinputterminalas closeto the SW pin as copperareaof thistraceto lowerelectricaland magneticfield radiationbut makethe tracewideenoughto not use multiplelayersin parallelfor this areato any othertraceor Put an outputcapacitornearto the inductorand the IC.