DEVICEwww.6633.us

TPS2546-Q1www.
ti.
comSLVSCA1A–OCTOBER2013–REVISEDDECEMBER2013USB-ChargingPortControllerandPowerSwitchWithLoadDetectionCheckforSamples:TPS2546-Q11FEATURESAPPLICATIONS2AEC-Q100QualifiedAutomotive–DeviceHBMESDClassificationLevelH2USBPorts(HostandHubs)–DeviceCDMESDClassificationLevelC5NotebookandDesktopPCsOperatingRange:4.
5Vto5.
5VUniversalWall-ChargingAdaptersAutomaticSDPandCDPSwitchingforDevicesDESCRIPTIONthatdoNotConnecttoCDPPortsTheTPS2546-Q1deviceisaUSB-chargingportD+/D–CDPandDCPModesperUSBBatterycontrollerandpowerswitchwithanintegratedUSBChargingSpecification1.
22.
0high-speeddata-line(D+andD–)switch.
TheD+/D–ShortedModeperChineseTPS2546-Q1providestheelectricalsignaturesonD+TelecommunicationIndustryStandardYD/TandD–tosupportchargingschemesasdescribedin1591-2009theFEATURESofthisdatasheet.
TexasInstrumentsteststhechargingofpopularmobilephones,tablets,AutomaticallySelectsChargeModeinNon-andmediadeviceswiththeTPS2546-Q1devicetoBC1.
2DevicesensurecompatibilitywithbothBC1.
2compliantand–D+/D–DividerModes2/2.
7Vand2.
7/2Vnon-BC1.
2compliantdevices.
–D+/D–1.
2VModeInadditiontochargingpopulardevices,theTPS2546-SupportsSleep-ModeChargingandWakeUpQ1devicealsosupportstwodistinctpower-byMouseandKeyboardmanagementfeatures:powerwakeandport-powermanagement(PPM)throughtheSTATUSpin.
PowerLoadDetectioninS4andS5StatesSupportswakeallowsforpowersupplycontrolinS4orS5IntelligentPowerManagementchargingandprovidesPPMwiththeabilityto73-mΩ(typ)High-SideMOSFETmanageportpowerinamultiportapplication.
AdjustableCurrent-Limitupto3A(typ)Additionally,systemwakeup(fromS3)withamouseorkeyboard(atbothlowspeedandfullspeed)isfullyMaxDeviceCurrentsupportedbytheTPS2546-Q1device.
–2AWhenDeviceDisabledTheTPS2546-Q173-mΩpower-distributionswitchis–270AWhenDeviceEnabledintendedforapplicationswhereheavycapacitiveDrop-InandBOMCompatiblewithTPS2543loadsandshortcircuitsareencountered.
Two16-PinWQFN(3*3)Packageprogrammablecurrentthresholdsprovideflexibilityforsettingcurrentlimitsandloaddetectthresholds.
TPS2546-Q1RTEPACKAGEANDTYPICALAPPLICATIONDIAGRAM1Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
2PowerPADisatrademarkofTexasInstruments.
PRODUCTIONDATAinformationiscurrentasofpublicationdate.
Copyright2013,TexasInstrumentsIncorporatedProductsconformtospecificationsperthetermsoftheTexasInstrumentsstandardwarranty.
Productionprocessingdoesnotnecessarilyincludetestingofallparameters.
TPS2546-Q1SLVSCA1A–OCTOBER2013–REVISEDDECEMBER2013www.
ti.
comThisintegratedcircuitcanbedamagedbyESD.
TexasInstrumentsrecommendsthatallintegratedcircuitsbehandledwithappropriateprecautions.
Failuretoobserveproperhandlingandinstallationprocedurescancausedamage.
ESDdamagecanrangefromsubtleperformancedegradationtocompletedevicefailure.
Precisionintegratedcircuitsmaybemoresusceptibletodamagebecauseverysmallparametricchangescouldcausethedevicenottomeetitspublishedspecifications.
ABSOLUTEMAXIMUMRATINGS(1)overoperatingfree-airtemperaturerange,voltagesarereferencedtoGND(unlessotherwisenoted)MINMAXUNITIN,EN,ILIM_LO,ILIM_HI,FAULT,STATUS,–0.
37ILIM_SEL,CTL1,CTL2,CTL3,OUTVoltagerangeVINtoOUT–77DP_IN,DM_IN,DP_OUT,DM_OUT–0.
3(IN+0.
3)or5.
7InputclampcurrentDP_IN,DM_IN,DP_OUT,DM_OUT±20mAContinuouscurrentinSDPorCDPmodeDP_INtoDP_OUTorDM_INtoDM_OUT±100mAContinuouscurrentinBC1.
2DCPmodeDP_INtoDM_IN±50mAContinuousoutputcurrentOUTInternallylimitedContinuousoutputsinkcurrentFAULT,STATUS25mAContinuousoutputsourcecurrentILIM_LO,ILIM_HIInternallylimitedmAHBMAEC-Q100ClassificaitonLevelH22kVElectrostaticdischargeratingCDMAEC-Q100ClassificaitonLevelC5750VOperatingjunctiontemperature,TJ–40Internallylimited°C(1)StressesbeyondthoselistedunderAbsoluteMaximumRatingsmaycausepermanentdamagetothedevice.
Thesearestressratingsonly,andfunctionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedunderRecommendedOperatingConditionsisnotimplied.
Exposuretoabsolute-maximum-ratedconditionsforextendedperiodsmayaffectdevicereliability.
THERMALINFORMATIONTPS2546-Q1THERMALMETRIC(1)UNITRTE(16PIN)θJAJunction-to-ambientthermalresistance53.
4θJCtopJunction-to-case(top)thermalresistance51.
4θJBJunction-to-boardthermalresistance17.
2°C/WψJTJunction-to-topcharacterizationparameter3.
7ψJBJunction-to-boardcharacterizationparameter20.
7θJCbotJunction-to-case(bottom)thermalresistance3.
9(1)Formoreinformationabouttraditionalandnewthermalmetrics,seetheICPackageThermalMetricsapplicationreport,SPRA953.
RECOMMENDEDOPERATINGCONDITIONSvoltagesarereferencedtoGND(unlessotherwisenoted)MINMAXUNITVINInputvoltage,IN4.
55.
5VInputvoltage,logic-levelinputs,EN,CTL1,CTL2,CTL3,ILIM_SEL05.
5VInputvoltage,datalineinputs,DP_IN,DM_IN,DP_OUT,DM_OUT0VINVVIHHigh-levelinputvoltage,EN,CTL1,CTL2,CTL3,ILIM_SEL1.
8VVILLow-levelinputvoltage,EN,CTL1,CTL2,CTL3,ILIM_SEL0.
8VContinuouscurrent,datalineinputs,SDPorCDPmode,DP_INtoDP_OUT,DM_INtoDM_OUT±30mAContinuouscurrent,datalineinputs,BC1.
2DCPmode,DP_INtoDM_IN±15mAIOUTContinuousoutputcurrent,OUT02.
5AContinuousoutputsinkcurrent,FAULT,STATUS010mARILIM_XXCurrent-limitsetresistors16.
9750kΩTJOperatingvirtualjunctiontemperature–40125°C2SubmitDocumentationFeedbackCopyright2013,TexasInstrumentsIncorporatedProductFolderLinks:TPS2546-Q1TPS2546-Q1www.
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comSLVSCA1A–OCTOBER2013–REVISEDDECEMBER2013ELECTRICALCHARACTERISTICSUnlessotherwisenoted:–40≤TJ≤125°C,4.
5V≤VIN≤5.
5V,VEN=VIN,VILIM_SEL=VIN,VCTL1=VCTL2=VCTL3=VIN.
RFAULT=RSTATUS=10kΩ,RILIM_HI=20kΩ,RILIM_LO=80.
6kΩ.
Positivecurrentsareintopins.
Typicalvaluesareat25°C.
AllvoltagesarewithrespecttoGND.
PARAMETERTESTCONDITIONSMINTYPMAXUNITPOWERSWITCHTJ=25°C,IOUT=2A7384RDS(on)Onresistance(1)–40°C≤TJ≤85°C,IOUT=2A73105mΩ–40°C≤TJ≤125°C,IOUT=2A73120trOUTvoltagerisetime0.
711.
6VIN=5V,CL=1F,RL=100Ω(seeFigure23andmsFigure24)tfOUTvoltagefalltime0.
20.
350.
5tonOUTvoltageturn-ontime2.
74VIN=5V,CL=1F,RL=100Ω(seeFigure23andmsFigure25)toffOUTvoltageturn-offtime1.
73VOUT=5.
5V,VIN=VEN=0V,–40≤TJ≤85°C,IREVReverseleakagecurrent2AMeasureIOUTDISCHARGERDCHGOUTdischargeresistance400500630ΩtDCHG_LLongOUTdischargeholdtimeTimeVOUT<0.
7V(seeFigure26)1.
322.
9stDCHG_SShortOUTdischargeholdtimeTimeVOUT<0.
7V(seeFigure26)205310450msEN,ILIMSEL,CTL1,CTL2,CTL3INPUTSInputpinrisinglogicthreshold11.
351.
70VvoltageInputpinfallinglogicthreshold0.
851.
151.
45VvoltageHysteresis(2)200mVInputcurrentPinvoltage=0Vor5.
5V–0.
50.
5AILIMSELCURRENTLIMITVILIM_SEL=0V,RILIM_LO=210kΩ205240275VILIM_SEL=0V,RILIM_LO=80.
6kΩ575625680IOSOUTshortcircuitcurrentlimit(1)VILIM_SEL=0V,RILIM_LO=22.
1kΩ212022752430mAVILIM_SEL=VIN,RILIM_HI=20kΩ234025102685VILIM_SEL=VIN,RILIM_HI=16.
9kΩ277029703170ResponsetimetoOUTshortVIN=5.
0V,R=0.
1Ω,leadlength=2inches(seetIOS1.
5scircuit(2)Figure27)SUPPLYCURRENTIIN_OFFDisabledINsupplycurrentVEN=0V,VOUT=0V,–40≤TJ≤85°C0.
12AVCTL1=VCTL2=VIN,VCTL3=0V,VILIM_SEL=0V165220VCTL1=VCTL2=VCTL3=VIN,VILIM_SEL=0V175230IIN_ONEnabledINsupplycurrentVCTL1=VCTL2=VIN,VCTL3=0V,VILIM_SEL=VIN185240AVCTL1=VCTL2=VIN,VCTL3=VIN,VILIM_SEL=VIN195250VCTL1=0V,VCTL2=VCTL3=VIN215270(1)Pulse-testingtechniquesmaintainjunctiontemperatureclosetoambienttemperature.
Thermaleffectsmustbetakenintoaccountseparately.
(2)TheseparametersareprovidedforreferenceonlyanddonotconstitutepartofTI'spublisheddevicespecificationsforpurposesofTI'sproductwarranty.
Copyright2013,TexasInstrumentsIncorporatedSubmitDocumentationFeedback3ProductFolderLinks:TPS2546-Q1TPS2546-Q1SLVSCA1A–OCTOBER2013–REVISEDDECEMBER2013www.
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comELECTRICALCHARACTERISTICS(continued)Unlessotherwisenoted:–40≤TJ≤125°C,4.
5V≤VIN≤5.
5V,VEN=VIN,VILIM_SEL=VIN,VCTL1=VCTL2=VCTL3=VIN.
RFAULT=RSTATUS=10kΩ,RILIM_HI=20kΩ,RILIM_LO=80.
6kΩ.
Positivecurrentsareintopins.
Typicalvaluesareat25°C.
AllvoltagesarewithrespecttoGND.
PARAMETERTESTCONDITIONSMINTYPMAXUNITUNDERVOLTAGELOCKOUTVUVLOINrisingUVLOthresholdvoltage3.
94.
14.
3VHysteresis(3)100mVFAULTOutputlowvoltageIFAULT=1mA100mVOff-stateleakageVFAULT=5.
5V1AOvercurrentFAULTrisingand58.
212msfallingdeglitchSTATUSOutputlowvoltageISTATUS=1mA100mVOff-stateleakageVSTATUS=5.
5V1ATHERMALSHUTDOWNThermalshutdownthreshold155Thermalshutdownthresholdin135°Ccurrent-limitHysteresis(3)20(3)TheseparametersareprovidedforreferenceonlyanddonotconstitutepartofTI'spublisheddevicespecificationsforpurposesofTI'sproductwarranty.
ELECTRICALCHARACTERISTICS,HIGH-BANDWIDTHSWITCHUnlessotherwisenoted:–40≤TJ≤125°C,4.
5V≤VIN≤5.
5V,VEN=VIN,VILIM_SEL=VIN,VCTL1=VCTL2=VCTL3=VIN.
RFAULT=RSTATUS=10kΩ,RILIM_HI=20kΩ,RILIM_LO=80.
6kΩ,Positivecurrentsareintopins.
Typicalvaluesareat25°C.
AllvoltagesarewithrespecttoGND.
PARAMETERTESTCONDITIONSMINTYPMAXUNITHIGH-BANDWIDTHANALOGSWITCHVDP/DM_OUT=0V,IDP/DM_IN=30mA24DP/DMswitchonresistanceΩVDP/DM_OUT=2.
4V,IDP/DM_IN=–15mA36VDP/DM_OUT=0V,IDP/DM_IN=30mA0.
050.
15SwitchresistancemismatchbetweenΩDP/DMchannelsVDP/DM_OUT=2.
4V,IDP/DM_IN=–15mA0.
050.
15VEN=0V,VDP/DM_IN=0.
3V,Vac=0.
6Vpk-pk,DP/DMswitchoff-statecapacitance(1)3pFf=1MHzDP/DMswitchon-statecapacitance(2)VDP/DM_IN=0.
3V,Vac=0.
6Vpk-pk,f=1MHz5.
4pFOIRROff-stateisolation(3)VEN=0V,f=250MHz33dBXTALKOn-statecrosschannelisolation(3)f=250MHz52dBVEN=0V,VDP/DM_IN=3.
6V,VDP/DM_OUT=0V,Off-stateleakagecurrent0.
11.
5AmeasureIDP/DM_OUTBWBandwidth(–3dB)(3)RL=50Ω2.
6GHztpdPropagationdelay(3)0.
25nsSkewbetweenoppositetransitionsofthetSK0.
1nssameport(tPHL–tPLH)(1)TheresistanceinserieswiththeparasiticcapacitancetoGNDistypically250Ω.
(2)TheresistanceinserieswiththeparasiticcapacitancetoGNDistypically150Ω(3)TheseparametersareprovidedforreferenceonlyanddonotconstitutepartofTI'spublisheddevicespecificationsforpurposesofTI'sproductwarranty.
4SubmitDocumentationFeedbackCopyright2013,TexasInstrumentsIncorporatedProductFolderLinks:TPS2546-Q1TPS2546-Q1www.
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comSLVSCA1A–OCTOBER2013–REVISEDDECEMBER2013ELECTRICALCHARACTERISTICS,CHARGINGCONTROLLERUnlessotherwisenoted:–40≤TJ≤125°C,4.
5V≤VIN≤5.
5V,VEN=VIN,VILIM_SEL=VIN,VCTL1=0V,VCTL2=VCTL3=VIN.
RFAULT=RSTATUS=10kΩ,RILIM_HI=20kΩ,RILIM_LO=80.
6kΩ,Positivecurrentsareintopins.
Typicalvaluesareat25°C.
AllvoltagesarewithrespecttoGND.
PARAMETERTESTCONDITIONSMINTYPMAXUNITSHORTEDMODE(BC1.
2DCP)VCTL1=VIN,VCTL2=VCTL3=0VDP_IN/DM_INshortingresistance125200Ω1.
2VModeDP_IN/DM_INoutputvoltage1.
191.
251.
31VDP_IN/DM_INoutputimpedance607594kΩDIVIDER1MODEDP_INDivider1outputvoltage1.
922.
1VDM_INDivider1outputvoltage2.
572.
72.
84VDP_INoutputimpedance810.
512.
5kΩDM_INoutputimpedance810.
512.
5kΩDIVIDER2MODEIOUT=1ADP_INDivider2outputvoltage2.
572.
72.
84VDM_INDivider2outputvoltage1.
922.
1VDP_INoutputimpedance810.
512.
5kΩDM_INoutputimpedance810.
512.
5kΩCHARGINGDOWNSTREAMPORTVCTL1=VCTL2=VCTL3=VINVDP_IN=0.
6V,VDM_SRCDM_INCDPoutputvoltage0.
50.
60.
7V–250A250.
4VVDM_SRCactivationHysteresis(1)50mVDP_INrisingupperwindowthresholdforVLGC_SRC0.
81VVDM_SRCde-activationHysteresis(1)100mVIDP_SINKDP_INsinkcurrentVDP_IN=0.
6V4070100ALOADDETECT–NONPOWERWAKEVCTL1=VCTL2=VCTL3=VINILDIOUTrisingloaddetectcurrentthreshold635700765mAHysteresis(1)50mAtLD_SETLoaddetectsettime140200275msLoaddetectresettime1.
934.
2sLOADDETECT–POWERWAKEVCTL1=VCTL2=0V,VCTL3=VINIOS_PWPowerwakeshortcircuitcurrentlimit325578mAIOUTfallingpowerwakeresetcurrent234567mAdetectionthresholdResetcurrenthysteresis(1)5mAPowerwakeresettime10.
71520.
6s(1)TheseparametersareprovidedforreferenceonlyanddonotconstitutepartofTI'spublisheddevicespecificationsforpurposesofTI'sproductwarranty.
Copyright2013,TexasInstrumentsIncorporatedSubmitDocumentationFeedback5ProductFolderLinks:TPS2546-Q1TPS2546-Q1SLVSCA1A–OCTOBER2013–REVISEDDECEMBER2013www.
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comDEVICEINFORMATIONTPS2546-Q1RTEPACKAGE(TopView)PINFUNCTIONSPINTYPE(1)DESCRIPTIONNAMENO.
CTL16ITheCTLpinsarelogic-levelinputsusedtocontrolthechargingmodeandthesignalswitches(seeCTL27ITable3).
ThesepinstiedirectlytoINorGNDwithoutapulluporpulldownresistor.
CTL38IDM_IN11I/OD–datalinetodownstreamconnectorDM_OUT2I/OD–datalinetoUSBhostcontrollerDP_IN10I/OD+datalinetodownstreamconnectorDP_OUT3I/OD+datalinetoUSBhostcontrollerENisthelogic-levelinputforturningonandoffthepowerswitchandthesignalswitches.
LogiclowEN5IturnsoffthesignalandpowerswitchesandholdsOUTindischarge.
ENtiesdirectlytoINorGNDwithoutapulluporpulldownresistor.
Thispinistheactive-lowopen-drainoutputandisassertedduringovertemperatureorcurrent-limitFAULT13Oconditions.
GND14PGroundconnectionILIM_HI16IThispinisanexternalresistorconnectionusedtosetthehighcurrent-limitthreshold.
Thispinisanexternalresistorconnectionusedtosetthelowcurrent-limitthresholdandtheloadILIM_LO15Idetectioncurrentthreshold.
AresistortoILIM_LOisoptional;seeCurrent-LimitSettings.
Thispinisthelogic-levelinputsignalusedtocontrolthechargingmode,currentlimitthreshold,andloadILIM_SEL4Idetection(seeTable3).
ILIM_SELtiesdirectlytoINorGNDwithoutapulluporpulldownresistor.
INistheinputvoltageandsupplyvoltage.
Connectthispintoa0.
1-μForgreaterceramiccapacitorfromIN1PINtoGNDandasclosetothedeviceaspossible.
OUT12PPower-switchoutputThePowerPADisinternallyconnectedtoGNDandisusedtoheat-sinkthedevicetothecircuitboardPowerPAD––traces.
ConnectthePowerPADtotheGNDplane.
STATUS9OThispinistheactive-lowopen-drainoutputandisassertedinloaddetectionconditions.
(1)G=Ground,I=Input,O=Output,P=Power6SubmitDocumentationFeedbackCopyright2013,TexasInstrumentsIncorporatedProductFolderLinks:TPS2546-Q1TPS2546-Q1www.
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comSLVSCA1A–OCTOBER2013–REVISEDDECEMBER2013TPS2546-Q1FUNCTIONALBLOCKDIAGRAMCopyright2013,TexasInstrumentsIncorporatedSubmitDocumentationFeedback7ProductFolderLinks:TPS2546-Q1TPS2546-Q1SLVSCA1A–OCTOBER2013–REVISEDDECEMBER2013www.
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comTYPICALCHARACTERISTICSPOWERSWITCHONRESISTANCEREVERSELEAKAGECURRENTvsvsTEMPERATURETEMPERATUREFigure1.
Figure2.
OUT-DISCHARGERESISTANCEOUTSHORT-CIRCUITCURRENTLIMITvsvsTEMPERATURETEMPERATUREFigure3.
Figure4.
8SubmitDocumentationFeedbackCopyright2013,TexasInstrumentsIncorporatedProductFolderLinks:TPS2546-Q1TPS2546-Q1www.
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comSLVSCA1A–OCTOBER2013–REVISEDDECEMBER2013TYPICALCHARACTERISTICS(continued)DISABLED-INSUPPLYCURRENTENABLED-INSUPPLYCURRENT—SDPvsvsTEMPERATURETEMPERATUREFigure5.
Figure6.
ENABLED-INSUPPLYCURRENT—CDPENABLED-INSUPPLYCURRENT—DCPAUTOvsvsTEMPERATURETEMPERATUREFigure7.
Figure8.
Copyright2013,TexasInstrumentsIncorporatedSubmitDocumentationFeedback9ProductFolderLinks:TPS2546-Q1TPS2546-Q1SLVSCA1A–OCTOBER2013–REVISEDDECEMBER2013www.
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comTYPICALCHARACTERISTICS(continued)STATUSANDFAULTOUTPUTLOWVOLTAGEDATATRANSMISSIONCHARACTERISTICSvsvsSINKINGCURRENTFREQUENCYFigure9.
Figure10.
OFF-STATEDATA-SWITCHISOLATIONON-STATECROSS-CHANNELISOLATIONvsvsFREQUENCYFREQUENCYFigure11.
Figure12.
10SubmitDocumentationFeedbackCopyright2013,TexasInstrumentsIncorporatedProductFolderLinks:TPS2546-Q1TPS2546-Q1www.
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comSLVSCA1A–OCTOBER2013–REVISEDDECEMBER2013TYPICALCHARACTERISTICS(continued)EYEDIAGRAMUSINGUSB-COMPLIANCETESTPATTERNEYEDIAGRAMUSINGUSB-COMPLIANCETESTPATTERN(withnoswitch)(withdataswitch)Figure13.
Figure14.
IOUTRISINGLOAD-DETECTTHRESHOLDANDOUTSHORT-CIRCUITCURRENTLIMITLOADDETECTSET-TIMEvsvsTEMPERATURETEMPERATUREFigure15.
Figure16.
Copyright2013,TexasInstrumentsIncorporatedSubmitDocumentationFeedback11ProductFolderLinks:TPS2546-Q1TPS2546-Q1SLVSCA1A–OCTOBER2013–REVISEDDECEMBER2013www.
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comTYPICALCHARACTERISTICS(continued)POWER-WAKECURRENTLIMITvsTEMPERATURETURN-ONRESPONSEFigure17.
Figure18.
TURN-OFFRESPONSEDEVICEENABLEDINTOSHORTCIRCUITFigure19.
Figure20.
12SubmitDocumentationFeedbackCopyright2013,TexasInstrumentsIncorporatedProductFolderLinks:TPS2546-Q1TPS2546-Q1www.
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comSLVSCA1A–OCTOBER2013–REVISEDDECEMBER2013TYPICALCHARACTERISTICS(continued)DEVICEENABLEDINTOSHORTCIRCUIT—THERMALCYCLINGSHORTCIRCUITTOFULLLOADRECOVERYFigure21.
Figure22.
Copyright2013,TexasInstrumentsIncorporatedSubmitDocumentationFeedback13ProductFolderLinks:TPS2546-Q1TPS2546-Q1SLVSCA1A–OCTOBER2013–REVISEDDECEMBER2013www.
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comPARAMETERMEASUREMENTDESCRIPTIONFigure23.
OUTRiseandFallTestLoadFigure24.
Power-OnandPower-OffTimingFigure25.
EnableTiming,Active-HighEnableFigure26.
OUT-DischargeDuringModeChangeFigure27.
OutputShort-CircuitParameters14SubmitDocumentationFeedbackCopyright2013,TexasInstrumentsIncorporatedProductFolderLinks:TPS2546-Q1TPS2546-Q1www.
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comSLVSCA1A–OCTOBER2013–REVISEDDECEMBER2013DETAILEDDESCRIPTIONOverviewThefollowingoverviewreferencesvariousindustrystandards.
TIrecommendstoconsultthemostup-to-datestandardstoensurethemostrecentandaccurateinformation.
Rechargeableportableequipmentrequiresanexternalpowersourcetochargebatteries.
USBportsareaconvenientlocationforchargingbecauseofanavailable5-Vpowersource.
Universallyacceptedstandardsarerequiredtoensurehostandclient-sidedevicesoperatetogetherinasystemtoensurepower-managementrequirementsaremet.
Traditionally,hostportsfollowingtheUSB-2.
0specificationmustprovideatleast500mAtodownstreamclient-sidedevices.
BecausemultipleUSBdevicescanbeattachedtoasingleUSBportthroughabus-poweredhub,theclient-sidedevicesetsthepowerallotmentfromthehosttoensurethetotalcurrentdrawdoesnotexceed500mA.
Ingeneral,eachUSBdeviceisgranted100mAandcanrequestmorecurrentin100-mAunitstepsupto500mA.
Thehostgrantsordeniesadditionalcurrentbasedontheavailablecurrent.
AUSB-3.
0hostportnotonlyprovideshigherdataratethanaUSB-2.
0portbutalsoraisestheunitloadfrom100mAto150mA.
Providingaminimumcurrentof900mAtodownstreamclient-sidedevicesisrequired.
Additionally,thesuccessofUSBhasmadethemicro-USBandmini-USBconnectorsapopularchoiceforwall-adaptercables.
Amicro-USBormini-USBallowsaportabledevicetochargefrombothawalladapterandUSBportwithonlyoneconnector.
AsUSBcharginghasgainedpopularity,the500-mAminimumdefinedbyUSB2.
0,or900mAforUSB3.
0,hasbecomeinsufficientformanyhandsetandpersonalmediaplayers,whichrequireahigherchargingrate.
Walladaptersprovidemuchmorecurrentthan500or900mA.
Severalnewstandardshavebeenintroduceddefiningprotocolhandshakingmethodsthatallowhostandclientdevicestoacknowledgeanddrawadditionalcurrentbeyondthe500-mAand900-mAminimumdefinedbyUSB2.
0andUSB3.
0,respectively,whilestillusingasinglemicro-USBormini-USBinputconnector.
TheTPS2546-Q1devicesupportsfourofthemost-commonUSB-chargingschemesfoundinpopularhand-heldmediaandcellulardevices.
USBBatteryChargingSpecificationBC1.
2ChineseTelecommunicationsIndustryStandardYD/T1591-2009Dividermode1.
2VModeTheYD/T1591-2009standardisasubsetoftheBC1.
2specificationandissupportedbyamajorityofdevicesthatimplementUSBchanging.
Dividerand1.
2-Vchargingschemesaresupportedindevicesfromspecificandpopulardevicemakers.
TheBC1.
2specificationincludesthreedifferentporttypes:Standarddownstreamport(SDP)Chargingdownstreamport(CDP)Dedicatedchargingport(DCP)BC1.
2definesachargingportasadownstream-facingUSBportthatprovidespowerforchargingportableequipment.
Underthisdefinition,CDPandDCParedefinedaschargingports.
Table1liststhedifferencesbetweentheseporttypes.
Table1.
OperatingModesSUPPORTUSBMAXIMUMALLOWABLECURRENTPORTTYPE2.
0COMMUNICATIONDRAWBYPORTABLEDEVICE(A)SDP(USB2.
0)Yes0.
5SDP(USB3.
0)Yes0.
9CDPYes1.
5DCPNo1.
5Copyright2013,TexasInstrumentsIncorporatedSubmitDocumentationFeedback15ProductFolderLinks:TPS2546-Q1TPS2546-Q1SLVSCA1A–OCTOBER2013–REVISEDDECEMBER2013www.
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comStandardDownstreamPort(SDP)—USB2.
0andUSB3.
0AnSDPisatraditionalUSBportthatfollowsUSB2.
0andUSB3.
0protocol.
AnSDPsuppliesaminimumof500and900-mAperport.
USB2.
0andUSB3.
0communicationsissupported,andthehostcontrollermustbeactivetoallowcharging.
TheTPS2546-Q1devicesupportsSDPmodeinsystem-powerstateS0whenthesystemiscompletelypoweredONandfullyoperational.
Formoredetailsonthecontrolpin(CTL1–CTL3)settingsusedtoprogramthisstate,seeTable3.
ChargingDownstreamPort(CDP)ACDPisaUSBportthatfollowsUSBBC1.
2andsuppliesaminimumof1.
5Aperport.
ACDPprovidespowerandmeetstheUSB-2.
0requirementsfordeviceenumeration.
USB-2.
0communicationissupported,andthehostcontrollermustbeactivetoallowcharging.
ThedifferencebetweenCDPandSDPisthehost-chargehandshakinglogicthatidentifiesthisportasaCDP.
ACDPisidentifiablebyacompliantBC1.
2clientdeviceandallowsforadditionalcurrentdrawbytheclientdevice.
TheCDPhand-shakingprocessoccursintwosteps.
Duringsteponetheportableequipmentoutputsanominal0.
6-VoutputontheD+lineandreadsthevoltageinputontheD–line.
TheportabledevicedetectstheconnectiontoanSDPifthevoltageislessthanthenominaldatadetectvoltageof0.
3V.
TheportabledevicedetectstheconnectiontoaCDPiftheD–voltageisgreaterthanthenominaldatadetectvoltageof0.
3Vandoptionallylessthan0.
8V.
ThesecondstepisnecessaryforportableequipmenttodetermineiftheequipmentisconnectedtoaCDPoraDCP.
Theportabledeviceoutputsanominal0.
6-VoutputontheD–lineandreadsthevoltageinputontheD+line.
TheportabledeviceconcludestheequipmentisconnectedtoaCDPifthedatalinebeingreadremainslessthanthenominaldatadetectvoltageof0.
3V.
TheportabledeviceconcludesitisconnectedtoaDCPifthedatalinebeingreadisgreaterthanthenominaldatadetectvoltageof0.
3V.
TheTPS2546-Q1devicesupportsCDPmodeinsystem-powerstateS0whenthesystemiscompletelypoweredONandfullyoperational.
Formoredetailsoncontrolpin(CTL1-CTL3)settingsusedtoprogramthisstateseeTable3.
DedicatedChargingPort(DCP)ADCPonlyprovidespoweranddoesnotsupportdataconnectiontoanupstreamport.
Asshowninthefollowingsections,aDCPisidentifiedbytheelectricalcharacteristicsofthedatalines.
TheTPS2546-Q1deviceemulatesDCPintwochargingstates:DCPForcedandDCPAuto(seeFigure32).
InDCP-ForcedstatethedevicesupportsoneofthetwoDCPchargingschemes,eitherDivider1orShorted.
IntheDCP-Autostate,thedevicecharge-detectionstatemachineisactivatedtoselectivelyimplementchargingschemesinvolvedwiththeShorted,Divider1,Divider2,and1.
2VMode.
TheShortedDCPmodecomplieswithBC1.
2andChineseTelecommunicationsIndustryStandardYD/T1591-2009,whiletheDivider1,Divider2,and1.
2VModeareemployedtochargedevicesthatdonotcomplywiththeBC1.
2DCPstandard.
DCPBC1.
2andYD/T1591-2009BothstandardsdefinethattheD+andD–datalinesmustbeshortedtogetherwithamaximumseriesimpedanceof200Ω,asshowninFigure28.
16SubmitDocumentationFeedbackCopyright2013,TexasInstrumentsIncorporatedProductFolderLinks:TPS2546-Q1TPS2546-Q1www.
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comSLVSCA1A–OCTOBER2013–REVISEDDECEMBER2013Figure28.
DCPSupportingBC1.
2andYD/T1591-2009DCPDivider-ChargingSchemeThedevicesupportstwodividerchargingschemes,Divider1andDivider2,asshowninFigure29andFigure30,respectively.
IntheDivider1chargingschemethedeviceapplies2Vand2.
7VtoD+andD–datalines,respectively,whichisreversedinDivider2mode.
Figure29.
DCPDivider1ChargingSchemeFigure30.
DCPDivider2ChargingSchemeCopyright2013,TexasInstrumentsIncorporatedSubmitDocumentationFeedback17ProductFolderLinks:TPS2546-Q1TPS2546-Q1SLVSCA1A–OCTOBER2013–REVISEDDECEMBER2013www.
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comDCP1.
2VChargingSchemeTheDCP1.
2Vchargingschemeisusedbysomehand-helddevicestoenablefastchargingat2A.
TheTPS2546-Q1devicesupportsthisschemeinDCP-AutostatebeforethedeviceentersBC1.
2Shortedstate.
Tosimulatethischargingscheme,theD+andD–linesareshortedandpulledupto1.
2Vforafixedduration.
ThenthedevicemovestoDCPShortedmodeasdefinedintheBC1.
2specificationandasshowninFigure31Figure31.
DCP1.
2-VChargingSchemeDCPAutoModeAspreviouslydiscussed,theTPS2546-Q1deviceintegratesanauto-detectstatemachinethatsupportsalltheDCPchargingschemes.
Theauto-detectstatemachinestartsintheDivider1scheme,however,ifaBC1.
2orYD/T1591-2009compliantdeviceisattached,theTPS2546-Q1respondsbydischargingOUT,turningthepowerswitchbackonandoperatingin1.
2VModebrieflybeforeenteringBC1.
2DCPmode.
Thentheauto-detectstatemachinestaysinthatmodeuntilthedevicereleasesthedataline,inwhichcasetheauto-detectstatemachinegoesbacktotheDivider1scheme.
WhenaDivider1-compliantdeviceisattached,theTPS2546-Q1devicestaysintheDivider1state.
Also,theTPS2546-Q1deviceautomaticallyswitchesbetweentheDivider1andDivider2schemesbasedonthechargingcurrentdrawnbytheconnecteddevice.
Initially,thedevicesetsthedatalinestotheDivider1scheme.
Ifachargingcurrentofgreaterthan750mAismeasuredbytheTPS2546-Q1device,theauto-detectstatemachineswitchestotheDivider2scheme.
AfterswitchingtotheDivider2scheme,theauto-detectstatemachineteststheperipheraldevicetoensurethatthedevicecontinuestochargeatahighcurrent.
Iftheperipheraldevicecontinuestocharge,thentheauto-detectstatemachinestaysinDivider2scheme,otherwisetheauto-detectstatemachinerevertstotheDivider1scheme.
Figure32.
DCPAutoMode18SubmitDocumentationFeedbackCopyright2013,TexasInstrumentsIncorporatedProductFolderLinks:TPS2546-Q1TPS2546-Q1www.
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comSLVSCA1A–OCTOBER2013–REVISEDDECEMBER2013DCPForcedShortedandDCPForcedDivider1InthismodethedeviceispermanentlysettooneoftheDCPschemes(BC1.
2,YD/T1591-2009,orDivider1)ascommandedbythecontrolpinsettingperTable3.
High-BandwidthDataLineSwitchTheTPS2546-Q1devicepassestheD+andD–datalinesthroughthedevicetoenablemonitoringandhandshakingwhilesupportingthechargingoperation.
Awidebandwidthsignalswitchallowsdatatopassthroughthedevicewithoutcorruptingsignalintegrity.
ThedatalineswitchesareturnedoninanyoftheCDPorSDPoperatingmodes.
TheENinputmustbeatlogichighforthedatalineswitchestobeenabled.
NOTE1.
WhileinCDPmode,thedataswitchesareON,evenduringCDPhandshaking.
2.
ThedatalineswitchesareOFFifENorallCTLpinsareheldlow,orifinDCPmode.
Theswitchesarenotautomaticallyturnedoffifthepowerswitch(INtoOUT)isincurrent-limit.
3.
ThedataswitchesareonlyforUSB-2.
0differentialpair.
InthecaseofaUSB-3.
0host,thesuper-speeddifferentialpairsmustberouteddirectlytotheUSBconnectorwithoutpassingthroughtheTPS2546-Q1device.
4.
DataswitchesareOFFduringOUT(VBUS)discharge.
Copyright2013,TexasInstrumentsIncorporatedSubmitDocumentationFeedback19ProductFolderLinks:TPS2546-Q1TPS2546-Q1SLVSCA1A–OCTOBER2013–REVISEDDECEMBER2013www.
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comDeviceOperationFigure33showsthesimplifieddevicestatediagram.
Power-on-reset(POR)holdsthedeviceintheinitialstatewhiletheoutputisheldindischargemode.
AnyPOReventcausesthedevicetorentertheinitialstate.
AfterPORclears,thedevicegoestothenextstatedependingontheCTLlinesasshowninFigure33.
NOTE:Allshadedboxesaredevicechargingmodes.
Table2liststheCTLsettingscorrespondingtoflowlineconditions.
Figure33.
TPS2546-Q1ChargingStatesTable2.
DeviceControlPinsFlowLineConditionCTL1CTL2CTL3ILIM_SELDCH(Discharge)000XCDP1111SDP2(NodischargetoorfromCDP)1110110XSDP1(DischargetoandfromanychargingstateincludingCDP)010XDCP_SHORTED100XDCP/DIVIDER101X011XDCP_Auto001X20SubmitDocumentationFeedbackCopyright2013,TexasInstrumentsIncorporatedProductFolderLinks:TPS2546-Q1TPS2546-Q1www.
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comSLVSCA1A–OCTOBER2013–REVISEDDECEMBER2013OutputDischargeToallowachargingporttorenegotiatecurrentwithaportabledevice,theTPS2546-Q1deviceusestheOUTdischargefunction.
ThedeviceproceedsbyturningoffthepowerswitchwhiledischargingOUT.
ThedevicethenturnsonthepowerswitchagaintoreasserttheOUTvoltage.
Thisdischargefunctionisautomaticallyapplied,asshowninFigure33.
Therearetwodischargetimes,tDCHG_LandtDCHG_S.
tDCHG_LisfromSDP1/SDP2/CDPtoDCP_Auto,andtDCHG_SisfromDCP_AutotoSDP1/SDP2/CDP.
Wake-On-USBFeature(MouseandKeyboardWakeFeature)USB-2.
0BackgroundInformationThedatalinesoftheTPS2546-Q1deviceinterfacewithUSB-2.
0devices.
USB2.
0definesthreetypesofdevicesaccordingtodatarate.
ThefollowinglistsoutlinethethreedevicesandthecharacteristicsrelevanttoTPS2546-Q1wake-on-USBoperation.
Low-speedUSBdevices:1.
5Mb/sExamplesincludewiredmiceandkeyboardsDoesnotincludedevicesthatrequirebatterychargingAllsignalingperformedat2-Vand0.
8-VhighandlowlogiclevelsD–goeshightosignalconnectandwhenplacedintosuspendD–goeshighwhennottransmittingdatapacketsFull-speedUSBdevices:12Mb/sExamplesincludewirelessmiceandkeyboards,legacyphones,andmusicplayersIncludessomelegacydevicesthatrequirebatterychargingAllsignalingperformedat2-Vand0.
8-VhighandlowlogiclevelsD+goeshightosignalconnectandwhenplacedintosuspendD+goeshighwhennottransmittingdatapacketsHigh-speedUSBdevices:480Mb/sExamplesincludetablets,phones,andmusicplayersIncludesmanydevicesthatrequirebatterychargingConnectandsuspendsignalingperformedat2-Vand0.
8-VhighandlowlogiclevelsDatapacketsignalingperformedatlogiclevelsbelow0.
8VD+goeshightosignalconnectandwhenplacedintosuspend(sameasafull-speeddevice)D+andD–golowwhennottransmittingdatapacketsWake-On-USBWake-on-USBistheabilityofawake-configuredUSBdevicetowakeacomputersystemfromtheS3sleep-stateofthedevicebacktotheS0workingstate.
Wake-on-USBrequiresthedatalinestoconnecttothesystemUSBhostbeforethesystemisplacedintoS3sleepstate.
Wake-on-USBalsorequiresthatthelinesremaincontinuouslyconnecteduntiltheyareusedtowakethesystem.
TheTPS2546-Q1devicesupportslow-speedandhigh-speedhuman-interface-device(HID,suchasmouseorkeyboard)wakefunctions.
TherearetwoscenariosunderwhichtheTPS2546-Q1devicesupportswake-on-mouse.
ThefollowinglistshowsthespecificCTLpinchangesthattheTPS2546-Q1deviceoverrides.
TheinformationispresentedasCTL1,CTL2,andCTL3.
TheILIM_SELpinplaysnorole.
1.
111(CDP/SDP2)to011(DCP-Auto)2.
010(SDP1)to011(DCP-Auto)Copyright2013,TexasInstrumentsIncorporatedSubmitDocumentationFeedback21ProductFolderLinks:TPS2546-Q1TPS2546-Q1SLVSCA1A–OCTOBER2013–REVISEDDECEMBER2013www.
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comThe110(SDP1)-to-011(DCP-Auto)transitionisnotsupportedbecausethetransitioninvolveschangestotwoCTLpins.
DependingonwhichCTLpinchangesfirst,thedevicedetectseitheratemporary111or010command.
The010commandissafebutthe111commandcausesanOUTdischargeastheTPS2546-Q1deviceinsteadproceedstothe111state.
USBSlow-SpeedandFull-SpeedDeviceRecognitionTheTPS2546-Q1devicecandetectlow-speed(LS)orfull-speed(FS)deviceattachmentwhenitisinSDPorCDPmode.
AccordingtoUSBspecificationwhennodeviceisattached,theD+andD–linesareneargroundlevel.
Whenalow-speedcompliantdeviceisattachedtothechargingportoftheTPS2546-Q1device,theD–lineispulledhighintheidlestate(mouseorkeyboardisnotactivated).
However,whenanFSdeviceisattachedtheoppositeoccurs(D+ispulledhighandD–remainsatgroundlevel).
TheTPS2546-Q1devicemonitorsbothD+andD–lineswhiletheCTL-pinsettingsareinCDPorSDPmodetodetectLS-HIDorFS-HIDdeviceattachment.
TosupportHIDsleepwake,theTPS2546-Q1devicemustfirstdeterminethatitisattachedtoanLSorFSdevicewhenthesystemisinS0powerstate.
TheTPS2546-Q1devicedetectsanLSorFSdeviceaspreviouslydescribed.
WhilethesupportofanLS-HIDwakeisstraightforward,supportingFS-HIDrequiresmakingadistinctionbetweenanFSandahigh-speed(HS)device.
ThisdistinctionisimportantbecauseaHSdevicealwaysbeginsasanFSdevice(bya1.
5-kΩpullupresistoronD+).
Thenegotiationforhighspeedthenmakesthedistinctionwherebythe1.
5-kΩpullupresistorisremoved.
TheTPS2546-Q1devicehandlesthedistinctionbetweenanFSandHSdeviceatconnectbymemorizingiftheD+linegoeslowafterconnect.
AHSdeviceafterconnectalwaysundergoesnegotiationforHSwhichrequiresthe1.
5-kΩresistorpulluponD+toberemoved.
TomemorizeanFSdevice,theTPS2546-Q1requirestheperipheraldevicetoremainconnectedforatleast60secondswhilethesystemisinS0modebeforeplacingtheperipheraldeviceinsleeporS3mode.
ThisrequirementdoesnotapplyforanLSdevice.
NOTEIfthesystementerssleepmodeearlierthanthe60-secondwindow,anFSdevicemaynotberecognizedandthereforecouldfailtowakethesystemfromS3.
NoCTL-PinTimingRequirementAfterWakeEventandTransitionfromS3toS0UnliketheTPS2543device,thereisnoCTL-pintimingrequirementfortheTPS2546-Q1devicewhenthewake-configuredUSBdevicewakesthesystemfromS3backtoS0.
TheTPS2543devicerequirestheCTLpinstotransitionfromtheDCP-AutosettingbacktotheSDPorCDPsettingwithin64msoftheattachedUSBdevicesignalingawakeevent(suchasamouseclickorkeyboardkeypress).
ThistimingconditionisnotafeatureoftheTPS2546-Q1device.
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comSLVSCA1A–OCTOBER2013–REVISEDDECEMBER2013DeviceTruthTable(TT)Thedevicetruthtable(TT)listsallvalidbiascombinationsforthethreecontrolpins(CTL1throughCTL3),theILIM_SELpin,andthecorrespondingchargingmodeofeachpin.
TheTTpurposelydoesnotmatchchargingmodesoftheTPS2546-Q1devicewithglobalpowerstates(S0-S5)asthedeviceisneutraltosystempowerstates.
TheTPS2546-Q1devicemonitorstheCTLinputsandtransitionstowhicheverchargingstateitiscommandedtogoto(exceptwhenaLS-HIDorFS-HIDdeviceisdetected).
Forexample,ifsleepchargingisdesiredwhenthesystemisinastandbyorhibernatestate,thentheusermustsettheCTLpinsoftheTPS2546-Q1devicetocorrespondtotheDCP_AutochargingmodeperTable3.
However,whenthesystemreentersoperationmode,thentheusermustsetcontrolpinstocorrespondtoSDPorCDPmodeandsoon.
Table3.
TruthTableCURRENTSTATUSOUTPUTCTL1CTL2CTL3ILIM_SELMODELIMITCOMMENT(Activelow)SETTING0000DischargeN/AOFFOUTheldlow0001DischargeN/AOFF0010DCP_AutoILIM_HIOFFDatalinesdisconnectedIOS_PWandDatalinesdisconnectedandLoadDetect0011DCP_AutoDCPloadpresent(2)ILIM_HI(1)functionactive0100SDP1ILIM_LOOFFDatalinesconnected0101SDP1ILIM_HIOFF0110DCP_AutoILIM_HIOFFDatalinesdisconnectedDatalinesdisconnectedandLoadDetect0111DCP_AutoILIM_HIDCPloadpresent(3)functionactive1000DCP_ShortedILIM_LOOFFDeviceforcedtostayinDCPBC1.
2chargingmode1001DCP_ShortedILIM_HIOFF1010DCP/Divider1ILIM_LOOFFDeviceforcedtostayinDCPDivider1chargingmode1011DCP/Divider1ILIM_HIOFF1100SDP1ILIM_LOOFF1101SDP1ILIM_HIOFFDatalinesconnected1110SDP2(4)ILIM_LOOFF1111CDP(4)ILIM_HICDPloadpresent(5)DatalinesconnectedandLoaddetectactive(1)TheTPS2546-Q1current-limit(IOS)automaticallyswitchesbetweenIOS_PWandthevaluesetbyILIM_HIaccordingtotheLoadDetection–PowerWakefunctionality.
(2)TheDCPloadpresentisgovernedbytheLoadDetection–PowerWakelimits.
(3)TheDCPloadpresentisgovernedbytheLoadDetection–Non-PowerWakelimits.
(4)OUTdoesnotdischargewhenchangingbetween1111and1110.
(5)TheCDPloadpresentisgovernedbytheLoadDetection–Non-PowerWakelimitsandBC1.
2primarydetection.
UseTable4asanaidtoprogramtheTPS2546-Q1deviceaccordingtothesystemstates.
ProgrammingoftheTPS2546-Q1deviceisnotrestrictedtothefollowingsettings.
Table4.
Control-PinSettingsMatchedtoSystem-PowerStatesSYSTEMGLOBALCURRENT-LIMITTPS2546-Q1CHARGINGMODECTL1CTL2CTL3ILIM_SELPOWERSETTINGSTATES0SDP11101or0ILIM_HI/ILIM_LOS0SDP2,nodischargetoandfromCDP1110ILIM_LOCDP,loaddetectionwithILIM_LO+60-mAthresholdsorifaS01111ILIM_HIBC1.
2primarydetectionoccursS4orS5Automode,loaddetectionwithpower-wakethresholds0011ILIM_HIS3,S4,orS5Automode,noloaddetection0010ILIM_HIAutomode,keyboardandmousewakeup,loaddetectionS30111ILIM_HIwithILIM_LO+60-mAthresholdsS3Automode,keyboardandmousewakeup,noloaddetection0110ILIM_HIS3SDP1,keyboardandmousewakeup0101or0ILIM_HI/ILIM_LOCopyright2013,TexasInstrumentsIncorporatedSubmitDocumentationFeedback23ProductFolderLinks:TPS2546-Q1TPS2546-Q1SLVSCA1A–OCTOBER2013–REVISEDDECEMBER2013www.
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comLoadDetectTheTPS2546-Q1deviceofferssystemdesignersauniquepower-managementstrategynotavailablefromsimilarindustrydevices.
Thedevicesuportstwopower-managementschemesthroughtheSTATUSpin:1.
PowerWake(PW)2.
Port-PowerManagement(PPM)Eitherfeatureisimplementedinasystemdependingonthepowersavingsgoalsforthesystem.
Ingeneral,thePWfeatureisusedmainlyinmobilesystems,likeanotebook,wheresavingbatterypowerwhenthesystemisindeepsleep(S4orS5)stateisimperative.
ThePPMfeatureisimplementedwhenmultiplechargingportsaresupportedinthesamesystemandthesystempower-ratingcannotsupporthigh-currentchargingonmultipleportssimultaneously.
PowerWakeThegoalofthePWfeatureistosavethesystempowerwhenthesystemisinS4orS5state.
InS4orS5state,thesystemisindeepsleepandtypicallyrunsoffofthebattery.
Inthisstate,everymilliwattsavedtranslatestobattery-lifeextension.
Inthisstate,theTPS2546-Q1devicemonitorsthechargingcurrentattheOUTpin.
ThisstatealsoprovidesamechanismthroughtheSTATUSpintoswitchoutthehigh-powerDC-DCcontrollerandswitchinalow-powerLDOwhenthechargingcurrentrequirementislessthan45mA(typical)(forexample:whennoperipheraldeviceisconnectedatthechargingportorwhenadevicehasattainedafullbatterychargeanddrawslessthan45mA).
SeeFigure34forthepower-wakeflowchartanddescription.
24SubmitDocumentationFeedbackCopyright2013,TexasInstrumentsIncorporatedProductFolderLinks:TPS2546-Q1TPS2546-Q1www.
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comSLVSCA1A–OCTOBER2013–REVISEDDECEMBER2013Figure34.
Power-WakeFlowchartCopyright2013,TexasInstrumentsIncorporatedSubmitDocumentationFeedback25ProductFolderLinks:TPS2546-Q1TPS2546-Q1SLVSCA1A–OCTOBER2013–REVISEDDECEMBER2013www.
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comImplementingPowerWakeinNotebookSystemSeeFigure35,Figure36,andFigure37fortheimplementationofpowerwakeinnotebookplatformswiththeTPS2546-Q1device.
Thepower-wakefunctionisusedtoselectbetweenahigh-powerDC-DCconverterandlow-powerLDO(100mA)basedonchargingrequirements.
Systempower-savingisachievedwhenthedeviceisundernochargingconditions(theconnecteddeviceisfullychargedornodeviceisconnected),theDC-DCconverteristurnedoff(tosavepowerbecausetheconverterislessefficientinalow-poweroperatingregion),andthelow-powerLDOsuppliesstandbypowertothechargingport.
PowerwakeisactivatedinS4orS5mode(0011setting,seeTable3).
TheTPS2546-Q1chargesaconnecteddeviceasshowninFigure35.
TheSTATUSpinispulledlow(Case1)whichswitches-outtheLDOandswitches-intheDC-DCconvertertohandlehigh-currentcharging.
Figure35.
Case1:SysteminS4orS5,DeviceChargingAsshowninCase2AandCase2B(Figure36andFigure37,respectively),whentheconnecteddeviceisfullychargedordisconnectsfromthechargingport,thechargingcurrentfalls.
Ifthechargingcurrentfallstolessthan45mAandstaysbelowthisthresholdformorethan15seconds,theTPS2546-Q1deviceautomaticallysetsa55-mAinternalcurrent-limitandtheSTATUSpinispulledhigh(seeFigure36andFigure37).
Asaresult,theDC-DCconverterturnsoffandtheLDOturnson.
The55-mAcurrent-limitpreventstheoutputvoltageofthelow-powerLDOfromcollapsingincasethereisaspikeinthecurrentdrawbecauseofdeviceattachmentorotheractivitysuchasadisplay-panelLEDturningoninaconnecteddevice.
Whenadeviceisattachedanddrawslessthan55mAofchargingcurrent,theTPS2546-Q1reachestheinternalcurrent-limit(seethepower-wakeflowchart,Figure34).
Whenthedevicereachestheinternalcurrent-limit,devicepullsSTATUSlow,turnsontheDC-DCconverter,andturnsofftheLDO.
TheTPS2546-Q1devicedischargesOUTformorethan2seconds(typical)toallowthemainpowersupplytoturnon.
AfterthedischargeofOUT,thedeviceturnsonagainwiththecurrent-limitsetbyILIM_HI(Case1).
26SubmitDocumentationFeedbackCopyright2013,TexasInstrumentsIncorporatedProductFolderLinks:TPS2546-Q1TPS2546-Q1www.
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comSLVSCA1A–OCTOBER2013–REVISEDDECEMBER2013Figure36.
Case2A:SysteminS4orS5,NoDeviceAttachedFigure37.
Case2B:SysteminS4orS5,AttachedDeviceFullyChargedCopyright2013,TexasInstrumentsIncorporatedSubmitDocumentationFeedback27ProductFolderLinks:TPS2546-Q1TPS2546-Q1SLVSCA1A–OCTOBER2013–REVISEDDECEMBER2013www.
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comPortPowerManagementPPMistheintelligentanddynamicallocationofpower.
PPMisforsystemsthathavemultiplechargingportsbutcannotpowerthemallsimultaneously.
Thegoalsofthisfeatureincludethefollowing:1.
Enhancetheuserexperiencebyremovingtheneedoftheusertosearchforachargingport.
2.
Designthepowersupplyonlyforareasonablechargingload.
Allportsareinitiallyallowedtobroadcasthigh-currentcharging.
Thechargingcurrent-limitisbasedonthesettingoftheILIM_HIresistorconnection.
ThesystemmonitorsSTATUStoseewhenhighcurrentloadsarepresent.
OncetheallowednumberofportsassertSTATUS,theremainingportsaretoggledtoanonchargingport.
NonchargingportsareSDPportswithacurrent-limitbasedonILIM_LO.
TheTPS2546-Q1deviceallowsforasystemtotogglebetweenchargingandnonchargingportseitherwithorwithoutanOUTdischarge.
BenefitsofPPMThebenefitsofPPMincludethefollowing:DeliversbetteruserexperiencePreventsoverloadingofsystempowersupplyAllowsfordynamicpowerlimitsbasedonsystemstateAllowseveryporttopotentiallybeahigh-powerchargingportAllowsforsmallerpower-supplycapacitybecauseloadingiscontrolledPPMDetailsAllports(CDPorDCP)areallowedtobroadcasthigh-currentcharging.
Thecurrent-limitisbasedonILIM_HI.
ThesystemmonitorstheSTATUSpintoseewhenhighcurrentloadsarepresent.
OncetheallowednumberofportsassertSTATUS,theremainingportsaretoggledtoanSDPnonchargingport.
TheSDPcurrent-limitisbasedontheILIM_LOsetting.
TheSDPportsareautomaticallytoggledbacktoCDPorDCPmodewhenachargingportdeassertsSTATUS.
BasedontheCTLsettings,aprovisionexistsforaporttotogglebetweenchargingandnonchargingportseitherwithorwithoutaVBUSdischarge(forexample,whenaportisinSDP2mode(1110)andtheILIM_SELpintogglesto1becauseofanotherportreleasinghighcurrentrequirements).
TheSDP2portautomaticallyrevertstoCDPmode(1111)withoutadischargeevent,whichisdesirableifthisportwasconnectedtoamediadevicewhichsynceddatafromtheSDP2port.
Adischargeeventinterruptsthesyncingactivityontheportandconfusestheuser.
TheSTATUStrip-pointisbasedontheprogrammableILIM_LOcurrent-limitsetpoint.
TheportisusingtheILIM_HIcurrent-limit;STATUSisnotacurrent-limit.
BecauseILIM_LOdefinesthecurrent-limitforanSDPport,usetheILIM_LOvaluetodefineahighcurrentload.
STATUSassertsinCDPandDCPwhentheloadcurrentisaboveILIM_LOfor200ms(typical).
STATUSalsoassertsinCDPwhenanattacheddevicecompletesaBC1.
2primarydetection.
STATUSdeassertsinCDPandDCPwhentheloadcurrentisbelowILIM_LO10mAfor3seconds(typical).
ImplementingPPMinaSystemwithTwoChargingPortsFigure38showstheimplementationofthetwochargingports,eachwithaTPS2546-Q1device.
Inthisexample,the5-Vpowersupplyforthetwochargingportsisratedatlessthan3Aorlessthan15Wmaximum.
BothdeviceshaveRLIMchosentocorrespondtothelow(0.
9A)andhigh(1.
5A)current-limitsettingfortheport.
Inthisimplementationthesystemcansupportonlyoneofthetwoportsat1.
5-AchargingcurrentwhiletheotherportissettoSDPmodeandILIMITcorrespondsto0.
9A.
28SubmitDocumentationFeedbackCopyright2013,TexasInstrumentsIncorporatedProductFolderLinks:TPS2546-Q1TPS2546-Q1www.
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comSLVSCA1A–OCTOBER2013–REVISEDDECEMBER2013Figure38.
ImplementingPort-PowerManagementinaSystemSupportingTwoChargingPortsCDPandSDPAutoSwitchTheTPS2546-Q1deviceisequippedwithaCDPandSDPauto-switchfeaturetosupportsomepopularphonesinthemarket.
ThesepopularphonesdonotcomplytotheBC1.
2specificationbecausetheyfailtoestablishadataconnectioninCDPmode.
Thesephonesuseprimarydetection(usedtodistinguishbetweenanSDPanddifferenttypesofchargingports)toonlyidentifyportsasSDP(data,nocharge)orDCP(nodata,nocharge).
ThesephonesdonotrecognizeCDP(data,charge)ports.
WhenconnectedtoaCDPport,thesephonesclassifytheportasaDCPandonlychargethebattery.
BecausethechargingportsareconfiguredasCDPwhenthecomputerisinS0,usersdonotreceivetheexpecteddataconnection(seeFigure39).
Copyright2013,TexasInstrumentsIncorporatedSubmitDocumentationFeedback29ProductFolderLinks:TPS2546-Q1TPS2546-Q1SLVSCA1A–OCTOBER2013–REVISEDDECEMBER2013www.
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comFigure39.
CDPandSDPAutoToremedythisproblem,theTPS2546-Q1deviceemploysaCDPandSDPauto-switchschemetoensuretheseBC1.
2noncompliantphonesestablishdataconnectionusingthefollowingsteps.
1.
TheTPS2546-Q1devicedetermineswhenanoncompliantphonehaswronglyclassifiedaCDPportasaDCPportandhasnotmadeadataconnection.
2.
TheTPS2546-Q1deviceautomaticallycompletesanOUT(VBUS)dischargeandreconfigurestheportasanSDP.
3.
WhenreconfiguredasanSDP,thephonedetectsaconnectiontoanSDPandestablishesadataconnection.
4.
TheTPS2546-Q1devicethenswitchesautomaticallybacktoaCDPwithoutdoinganOUT(VBUS)discharge.
5.
ThephonecontinuestooperatelikeitisconnectedtoanSDPbecauseOUT(VBUS)wasnotinterrupted.
TheportisnowreadyinCDPifanewdeviceisattached.
OvercurrentProtectionWhenanovercurrentconditionisdetected,thedevicemaintainsaconstantoutputcurrentandreducestheoutputvoltageaccordingly.
Twopossibleoverloadconditionscanoccur.
Inthefirstcondition,theoutputisshortedbeforethedeviceenablesorbeforeVINisapplied.
TheTPS2546-Q1devicesensestheshortandimmediatelyswitchesintoaconstant-currentoutput.
Inthesecondcondition,ashortoranoverloadoccurswhilethedeviceisenabled.
Attheinstanttheoverloadoccurs,highcurrentsflowfor1to2s(typical)beforethecurrent-limitcircuitreacts.
Thedeviceoperatesinconstant-currentmodeafterthecurrent-limitcircuithasresponded.
Completeshutdownoccursonlyifthefaultispresentlongenoughtoactivatethermallimiting.
Thedeviceremainsoffuntilthejunctiontemperaturecoolstoapproximately20°Candthenrestarts.
Thedevicecontinuestocycleonandoffuntiltheovercurrentconditionisremoved.
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comSLVSCA1A–OCTOBER2013–REVISEDDECEMBER2013Current-LimitSettingsTheTPS2546-Q1devicehastwoindependentcurrent-limitsettingsthatareprogrammedexternallywitharesistor.
TheILIM_HIsettingisprogrammedwithRILIM_HIconnectedbetweenILIM_HIandGND.
TheILIM_LOsettingisprogrammedwithRILIM_LOconnectedbetweenILIM_LOandGND.
SeeTable3forscenarioswheneachcurrent-limitisused.
Bothsettingshavethesamerelationbetweenthecurrent-limitandtheprogrammingresistor.
RILIM_LOisoptionalandtheILIM_LOpincanbedisconnectedifthefollowingconditionsaremet:1.
ILIM_SELisalwayssethigh.
2.
LoadDetection—Port-PowerManagementisnotusedEquation1programsthetypicalcurrent-limit.
(1)RILIM_XXcorrespondstoeitherRILIM_HIorRILIM_LOasappropriate.
TYPICALCURRENT-LIMITSETTINGvsPROGRAMMINGRESISTORFigure40.
Copyright2013,TexasInstrumentsIncorporatedSubmitDocumentationFeedback31ProductFolderLinks:TPS2546-Q1TPS2546-Q1SLVSCA1A–OCTOBER2013–REVISEDDECEMBER2013www.
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comManyapplicationsrequirethatthecurrent-limitmeetspecifictolerancelimits.
Whendesigningtothesetolerancelimits,boththetoleranceoftheTPS2546-Q1current-limitandthetoleranceoftheexternalprogrammingresistormustbetakenintoaccount.
ThefollowingequationsapproximatetheTPS2546-Q1minimumandmaximumcurrent-limitstowithinafewmilliamperesandareappropriatefordesignpurposes.
TheequationsdonotconstitutepartofTI'spublisheddevicespecificationsforpurposesofTI'sproductwarranty.
Theseequationsassumeanideal—novariation—externalprogrammingresistor.
Totakeresistortoleranceintoaccount,firstdeterminetheminimumandmaximumresistorvaluesbasedonthetolerancespecificationsandusethesevaluesintheequations.
Becauseoftheinverserelationbetweenthecurrent-limitandtheprogrammingresistor,usethemaximumresistorvalueintheIOS_minequationandtheminimumresistorvalueintheIOS_maxequation.
(2)(3)CURRENT-LIMITSETTINGCURRENT-LIMITSETTINGvsvsPROGRAMMINGRESISTORPROGRAMMINGRESISTORFigure41.
Figure42.
ThetracesroutingtheRILIM_XXresistorsmustbeasufficientlylowresistanceastonotaffectthecurrent-limitaccuracy.
ThegroundconnectionfortheRILIM_XXresistorsisalsoveryimportant.
TheresistorsmustreferencebacktotheGNDpinoftheTPS2546-Q1device.
FollownormalboardlayoutpracticestoensurethatcurrentflowfromotherpartsoftheboarddoesnotimpactthegroundpotentialbetweentheresistorsandtheGNDpinoftheTPS2546-Q1device.
FAULTResponseTheFAULTopen-drainoutputisasserted(activelow)duringanovertemperatureorcurrent-limitcondition.
Theoutputremainsasserteduntilthefaultconditionisremoved.
TheTPS2546-Q1deviceisdesignedtoeliminatefalseFAULTreportingbyusinganinternaldeglitchcircuitforcurrent-limitconditionswithouttheneedforexternalcircuitry.
ThiseliminationensuresthatFAULTisnotaccidentallyassertedbecauseofnormaloperationsuchasstartingintoaheavycapacitiveload.
OvertemperatureconditionsarenotdeglitchedandasserttheFAULTsignalimmediately.
32SubmitDocumentationFeedbackCopyright2013,TexasInstrumentsIncorporatedProductFolderLinks:TPS2546-Q1TPS2546-Q1www.
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comSLVSCA1A–OCTOBER2013–REVISEDDECEMBER2013UndervoltageLockoutTheundervoltage-lockout(UVLO)circuitdisablesthepowerswitchuntiltheinputvoltagereachestheUVLOturn-onthresholdforULVO.
Built-inhysteresispreventsunwantedoscillationsontheoutputduetoinputvoltagedropfromlargecurrentsurges.
ThermalSenseTwoindependentthermal-sensingcircuitsprotecttheTPS2546-Q1deviceifthetemperatureexceedsrecommendedoperatingconditions.
Thesecircuitsmonitortheoperatingtemperatureofthepower-distributionswitchanddisableoperation.
Thedeviceoperatesinconstant-currentmodeduringanovercurrentcondition,whichincreasesthevoltagedropacrosspowerswitch.
Thepowerdissipationinthepackageisproportionaltothevoltagedropacrossthepowerswitch,sothejunctiontemperaturerisesduringanovercurrentcondition.
Thefirstthermalsensorturnsoffthepowerswitchwhenthedietemperatureexceeds135°Candthedeviceisincurrentlimit.
Thesecondthermalsensorturnsoffthepowerswitchwhenthedietemperatureexceeds155°Cregardlessofwhetherthepowerswitchisincurrentlimit.
Hysteresisisbuiltintoboththermalsensors,andtheswitchturnsonafterthedevicehascooledbyapproximately20°C.
Theswitchcontinuestocycleoffandthenonuntilthefaultisremoved.
Theopen-drainfalse-reportingoutput,FAULT,isasserted(activelow)duringanovertemperatureshutdowncondition.
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ti.
comREVISIONHISTORYChangesfromOriginal(October2013)toRevisionAPageDeletedQualifiedforAutomotiveApplicationsandTemperatureGrade1textfromFEATURESlist1ChangedD+andD–toD+/D–inFEATURESlist1ChangedloaddetectionbulletinFEATURESlist1DeletedUSB-compatiblebulletfromFEATURESlist1DeletedIntegratedfromMOSFETbulletinFEATURESlist1ChangeddocumentstatusfromProductPreviewtoProductionData1ChangedDISCHARGEspecificationintheELECTRICALCHARACTERISTICSsectionbysplittingTDCHGintolongandshorttime,andremovingtestconditionforRDCHG3DeletedmaxvalueforDP/DMswitchoff-statecapacitanceparameterintheELECTRICALCHARACTERISTICS,HIGH-BANDWIDTHSWITCHtable4DeletedmaxvalueforDP/DMswitchon-statecapacitanceparameterintheELECTRICALCHARACTERISTICS,HIGH-BANDWIDTHSWITCHtable4DeletedmaxvaluefortSKintheELECTRICALCHARACTERISTICS,HIGH-BANDWIDTHSWITCHtable4DeletedTPS2543Onlyfromblockdiagram7Deleteddischargetimeof2secondsfromtheTPS2546-Q1ChargingStatesimageintheDeviceOperationsection.
.
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20ChangedflowlineconditionnamesforDCP_SHORTandDCP_DIVIDERintheDeviceControlPinstabletomatchthoselistedintheTruthTable20AddedtDCHG_LandtDCHG_StexttotheOutputDischargesection2134SubmitDocumentationFeedbackCopyright2013,TexasInstrumentsIncorporatedProductFolderLinks:TPS2546-Q1PACKAGEOPTIONADDENDUMwww.
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com18-Dec-2013Addendum-Page1PACKAGINGINFORMATIONOrderableDeviceStatus(1)PackageTypePackageDrawingPinsPackageQtyEcoPlan(2)Lead/BallFinish(6)MSLPeakTemp(3)OpTemp(°C)DeviceMarking(4/5)SamplesTPS2546QRTERQ1ACTIVEWQFNRTE163000Green(RoHS&noSb/Br)CUNIPDAULevel-2-260C-1YEAR-40to1252546QTPS2546QRTETQ1PREVIEWWQFNRTE16250TBDCallTICallTI-40to125(1)Themarketingstatusvaluesaredefinedasfollows:ACTIVE:Productdevicerecommendedfornewdesigns.
LIFEBUY:TIhasannouncedthatthedevicewillbediscontinued,andalifetime-buyperiodisineffect.
NRND:Notrecommendedfornewdesigns.
Deviceisinproductiontosupportexistingcustomers,butTIdoesnotrecommendusingthispartinanewdesign.
PREVIEW:Devicehasbeenannouncedbutisnotinproduction.
Samplesmayormaynotbeavailable.
OBSOLETE:TIhasdiscontinuedtheproductionofthedevice.
(2)EcoPlan-Theplannedeco-friendlyclassification:Pb-Free(RoHS),Pb-Free(RoHSExempt),orGreen(RoHS&noSb/Br)-pleasecheckhttp://www.
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TBD:ThePb-Free/Greenconversionplanhasnotbeendefined.
Pb-Free(RoHS):TI'sterms"Lead-Free"or"Pb-Free"meansemiconductorproductsthatarecompatiblewiththecurrentRoHSrequirementsforall6substances,includingtherequirementthatleadnotexceed0.
1%byweightinhomogeneousmaterials.
Wheredesignedtobesolderedathightemperatures,TIPb-Freeproductsaresuitableforuseinspecifiedlead-freeprocesses.
Pb-Free(RoHSExempt):ThiscomponenthasaRoHSexemptionforeither1)lead-basedflip-chipsolderbumpsusedbetweenthedieandpackage,or2)lead-baseddieadhesiveusedbetweenthedieandleadframe.
ThecomponentisotherwiseconsideredPb-Free(RoHScompatible)asdefinedabove.
Green(RoHS&noSb/Br):TIdefines"Green"tomeanPb-Free(RoHScompatible),andfreeofBromine(Br)andAntimony(Sb)basedflameretardants(BrorSbdonotexceed0.
1%byweightinhomogeneousmaterial)(3)MSL,PeakTemp.
-TheMoistureSensitivityLevelratingaccordingtotheJEDECindustrystandardclassifications,andpeaksoldertemperature.
(4)Theremaybeadditionalmarking,whichrelatestothelogo,thelottracecodeinformation,ortheenvironmentalcategoryonthedevice.
(5)MultipleDeviceMarkingswillbeinsideparentheses.
OnlyoneDeviceMarkingcontainedinparenthesesandseparatedbya"~"willappearonadevice.
IfalineisindentedthenitisacontinuationofthepreviouslineandthetwocombinedrepresenttheentireDeviceMarkingforthatdevice.
(6)Lead/BallFinish-OrderableDevicesmayhavemultiplematerialfinishoptions.
Finishoptionsareseparatedbyaverticalruledline.
Lead/BallFinishvaluesmaywraptotwolinesifthefinishvalueexceedsthemaximumcolumnwidth.
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OTHERQUALIFIEDVERSIONSOFTPS2546-Q1:Catalog:TPS2546NOTE:QualifiedVersionDefinitions:Catalog-TI'sstandardcatalogproductTAPEANDREELINFORMATION*AlldimensionsarenominalDevicePackageTypePackageDrawingPinsSPQReelDiameter(mm)ReelWidthW1(mm)A0(mm)B0(mm)K0(mm)P1(mm)W(mm)Pin1QuadrantTPS2546QRTERQ1WQFNRTE163000330.
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31.
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