矽力杰 Silergy SQ24902 PD 控制器 规格书 Datasheet 佰祥电子

SQ24902

IEEE802.3btPDInterfaceController

GeneralDescriptionFeatures

TheSQ24902isanIEEE802.3af/at/bt-compliantIEEE802.3af/at/btPoweredDevice(PD)

_______

powereddevice(PD)interfacecontroller.TheT2PController

outputindicatesthenumberofclassificationeventsSupportsUpto71.3WPDs

receivedduringIEEE802.3bt-compliantmutual5-eventClassificationSensing

identificationandnegotiationofavailablepower.SuperiorSurgeProtection(100VAbsolute

Maximum)

TheSQ24902utilizesanexternal,lowR(ON)N-

DSWideJunctionTemperatureRange(–40℃to125℃)

channelhotswapMOSFETtoextendtheend-to-end

OverTemperatureProtection

powerdeliveryefficiencyandeliminatecostlyheat

sinks.TheSQ24902alsoincludesapowergoodIntegratedSignatureResistor

output,onboardsignatureresistor,undervoltageExternalHotSwapN-ChannelMOSFETfor

lockout,andthermalprotection.Start-upinrushLowestPowerDissipationandHighest

currentisadjustablewithanexternalcapacitor.SystemEfficiency

Auxiliarypoweroverrideissupportedaslowas9VConfigurableAuxPowerSupportasLowas9V

withtheAUXpin.RoHSCompliantandHalogenFree

Availablein10-LeadMSOPPackage

TheSQ24902canbeconfiguredtosupportall

possible802.3bt,802.3atand802.3afpowerlevels

withexternalcomponentchanges.Applications

HighPowerWirelessDataSystems

OrderingInformationOutdoorSecurityCameraEquipment

CommercialandPublicInformationDisplays

HighTemperatureIndustrialApplications

OrderingNumberPackagetypeNote

SQ24902FBCMSOP10----

TypicalApplication

D11

OUT

VAUX

RJ1C1

Q1

D3D4D5D6IN

DATA~+

RR5

PAIR8

~-03.3k

R

DATA~+10

C30

C4

PAIR~-R3R9

D147nF

340k47nF0

DATA~+

RR7

PAIR6

~-VPORTHSGATEHSSRC100k100k

~+

DATAR4AUXPWRGD

C

PAIR~-21M

1nF

D7D8D9D10

SQ24902FBCD2

RCLASS

RCLASS++

GNDT2P

R1R2

49.9118

Figure1.SchematicDiagram

SQ24902Rev1.0SilergyCorp.Confidential-PreparedforCustomerUseOnly1

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SQ24902

Pinout(topview)

GND110VPORT

AUX29HSGATE

RCLASS38HSSRC

RCLASS++47PWRGD

GND56T2P

(MSOP10)

TopMark:CXWxyz(Devicecode:CXW;x=yearcode,y=weekcode,z=lotnumbercode)

PinNameNO.TYPEPinDescription

GND1,5-Deviceground.

Auxiliarysense.AresistivedividerfromtheauxiliarypowerinputtoAUXsets

thevoltageatwhichtheauxiliarysupplytakesover.Inauxiliarypower

AUX2Ioperation,HSGATEpullsdown,thesignatureresistordisconnects,

_______

classificationisdisabled,thePWRGDpinishighimpedanceandT2Pindicates

maxavailablepower.ConnecttoGNDwhennotused.

RCLASS3OConfigurablePoEclassificationresistor.

RCLASS++4OConfigurablePoEclassificationresistor.

_______

T2P6OPSEtypeindicator;Open-drainoutput.

Powergoodindicator;Open-drainoutput.PulltoGNDduringVand

PWRGD7OCLASS

inrush.

ExternalHotSwapMOSFETsource.Connecttosourceoftheexternal

HSSRC8I

MOSFET.

ExternalHotSwapMOSFETgatecontroloutput.Connecttogateofthe

HSGATE9O

externalMOSFET.

PDinterfaceupperpowerrailandexternalHotSwapMOSFETdrain

VPORT10I

connection.

SQ24902Rev.1.0SilergyCorp.Confidential-PreparedforCustomerUseOnly2

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SQ24902

BlockDiagram

VPORT

VPORT

VOLTAGEAND

CURRENTREFFERECES

PWRGD

HSGATE

CONTROL

LOGICCHARGE

ONPUMP

VGOCHSSRC

AUX

+

6.7VOVERTEMPT2P

6.2V-

IAUXT

VPORTV

CALSSIFICATIONPORT

1.4V+LOGIC+1.4V

ENEN

--

RCLASSRCLASS++

GND

Figure2.BlockDiagram

AbsoluteMaximumRatings(Note1,4)

VPORT,HSSRCVoltage-----------------------------------------------------------------------------------------–0.3Vto100V

HSGATEtoHSSRCVoltage----------------------------------------------------------------------VHSSRC-0.2VtoVHSSRC+14V

HSGATECurrent------------------------------------------------------------------------------------------------------------±20mA

RCLASS,RCLASS++Voltage------------------------------------------------------------------0.3Vto6V(and≤VPORT)

AUXCurrent-----------------------------------------------------------------------------------------------------------------±1.4mA

_______

T2P,PWRGDVoltage--------------------------------------------------------------------------------------------–0.3Vto100V

_______

T2P,PWRGDCurrent---------------------------------------------------------------------------------------------------------5mA

PowerDissipation,PD@TA=25°C----------------------------------------------------------------------------------------0.74W

PackageThermalResistance(Note2)

θJA-----------------------------------------------------------------------------------------------------------135.2°C/W

θJC---------------------------------------------------------------------------------------------------------------25°C/W

OperatingJunctionTemperatureRange------------------------------------------------------------------------–40°Cto125°C

StorageTemperatureRange--------------------------------------------------------------------------------------–65°Cto150°C

LeadTemperature(Soldering,10sec.)------------------------------------------------------------------------------------300°C

RecommendedOperatingConditions(Note5)

VPORT,HSSRCVoltage----------------------------------------------------------------------------------------------0Vto60V

HSGATEtoHSSRCVoltage----------------------------------------------------------------------------VHSSRCtoVHSSRC+14V

RCLASS,RCLASS++Voltage----------------------------------------------------------------------0Vto5V(and≤VPORT)

AmbientTemperatureRange-------------------------------------------------------------------------------------40°Cto125°C

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SQ24902

ElectricalCharacteristics

Unlessotherwisenoted:–40℃≤TJ≤125℃.(Note4)

ParameterSymbolTestConditionsMinTypMaxUnit

VPORTOperatingInputVoltageAtVPORTpin60V

VPORTSignatureRangeVSIGAtVPORTpin1.510V

VPORTClassificationRangeVCLASSAtVPORTpin12.521V

AtVPORTpin,precededby

VPORTMarkRangeVMARK5.610V

VCLASS

VPORTAuxModeRangeAtVPORTpin,AUX>VAUXT860V

Signature/ClassHysteresisWindow1.0V

AtVPORTpin,precededby

ResetThresholdVRESET2.65.6V

VCLASS

PowerGoodThresholdVPG_TH7.188.9V

HotSwapTurn-onVoltageVHSON3537V

HotSwapTurn-offVoltageVHSOFF3031V

HotSwapOn/OffHysteresisWindow3V

SupplyCurrent

SupplyCurrentVVPORT=VHSSRC=57V1mA

V=17.5V,RCLASSand

SupplyCurrentDuringClassificationVPORT0.10.20.5mA

RCLASS++open

V=Vafter1st

SupplyCurrentDuringMarkEventVPORTMARK0.51.8mA

classificationevent

DetectionandClassificationSignature

DetectionSignatureResistanceVSIG(Note3)23.724.425.2kΩ

ResistanceDuringMarkEventVMARK(Note3)5.88.311kΩ

RCLASS/RCLASS++Operating–10mA≥IRCLASS≥–36mA,

1.321.401.43V

VoltageVCLASS

VVPORTStepto17.5V,34.8Ω

ClassificationSignatureStabilityTimefromRCLASSorRCLASS++to2ms

GND

Analog/DigitalInterface

AUXThresholdVAUXT66.26.4V

AUXHysteresisVAUX,HYS0.4V

AUXPinHysteresisCurrentIAUXTVAUX=6.1V0.82.14µA

_______

T2POutputLow1mALoad0.8V

PWRGDOutputLow1mALoad0.8V

PWRGDLeakageCurrentVPWRGD=60V5µA

______________

T2PLeakageCurrentT2P=60V5µA

HotSwapControl

HSGATEPull-upCurrentIGPUVHSGATE-VHSSRC=5V(Note7)-27-22-18µA

-10μALoad,withRespectto

HSGATEOpenCircuitVoltageVGOCHSSRC1017V

HSGATEPull-downCurrentVHSGATE-VHSSRC=5V200µA

Timing

AfterPWRGDvalid,if

_______

T2PFrequencyfT2PIEEE802.3btPSEismutually690840990Hz

identified

SQ24902Rev.1.0SilergyCorp.Confidential-PreparedforCustomerUseOnly4

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SQ24902

ParameterSymbolTestConditionsMinTypMaxUnit

After4-eventClassification50%

_______

T2PDutyCycleinPoEOperationAfter5-eventClassification

(Note6)(RCLASS++hasresistorto25%

GND)atTA=25°C.

_______VAUX>VAUXT,andRCLASS++

T2PDutyCycleinAuxiliarySupply

hasresistortoGNDatTA=25%

Operation(Note6)25°C.

Note1:StressesbeyondthoselistedunderAbsoluteMaximumRatingsmaycausepermanentdamagetothedevice.

ExposuretoanyAbsoluteMaximumRatingconditionforextendedperiodsmayaffectdevicereliabilityandlifetime.

Note2:θJAismeasuredinthenaturalconvectionatTA=25°ConSilergyEVBtestboardofJEDEC51-3thermal

measurementstandard.

Note3:Signatureresistancespecificationsdonotincluderesistanceaddedbytheexternaldiodebridgewhichcan

addasmuchas1.1ktotheportresistance.

Note4:AllvoltageswithrespecttoGNDunlessotherwisenoted.Positivecurrentsareintopins;negativecurrents

areoutofpinsunlessotherwisenoted.

Note5:ThisICincludesovertemperatureprotectionthatisintendedtoprotectthedeviceduringmomentary

overloadconditions.Junctiontemperaturewillexceed150°Cwhenovertemperatureprotectionisactive.

Continuousoperationabovethespecifiedmaximumoperatingjunctiontemperaturemayimpairdevicereliability.

_______

Note6:SpecifiedasthepercentageoftheperiodwhichT2PislowimpedancewithrespecttoGND.

Note7:IGPUavailableinPoEpoweredoperation.Thatis,availableafterVVPORT>VHSONandVAUX<VAUXT,over

therangewhereVVPORTisbetweenVHSOFFand60V.

SQ24902Rev.1.0SilergyCorp.Confidential-PreparedforCustomerUseOnly5

©2025SilergyCorp.AllRightsReserved.

SQ24902

TypicalPerformanceCharacteristics

DetectionSignatureResistancevs.VPORTVoltageDetectionSignatureResistancevs.Temperature

(VPORT=8V,RCLASS=49.9Ω,RCLASS++=118Ω)

28

)

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Ω

Ω

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Temperature:-40°Ck

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a

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VPORTVoltage(V)Temperature(°C)

SupplyCurrentduringPWRFETTurnonvs.SupplyCurrentduringClassificationvs.VPORT

VPORTVoltage(RCLASS,RCLASS++OPEN)