矽力杰 Silergy SY56816 PD 反激控制器 规格书 Datasheet 佰祥电子

SY56816

IEEE802.3af/atCompliantPoEPDInterfacewith

HighEfficiencyPSR/SSRFlybackConverter

GeneralDescriptionFeatures

TheSY56816isafullyintegratedIEEE802.3af/atPoEFullyCompatiblewith802.3af/atSpecifications

compliantPoweredDevice(PD)powersupplyconverter.100V0.45ΩPDIntegratedPassSwitch

ItincludesPDinterfaceandfully-featuredhighefficiency30Wmaximumpower

flybackconverter.100mAPDInrushCurrentLimit

900mAPDNormalOperationCurrentLimit

ThePDinterfacehasallthefunctionstocomplywithIEEEAuxiliaryAdaptorORingSupport

802.3af/at,includingdetection,1-eventand2-eventFlexibleTopology:

classification,~100mAinrushcurrentlimit,900mAPrimary-SideRegulated(PSR)Flyback

operationcurrentlimit,automaintainpowersignature(250kHz/400kHzSelectable)

(AMPS),aswellas100VratedHot-swapMOSFET.ThePDSecondary-SideRegulated(SSR)Flyback

interfacealsosupportsAuxiliaryAdaptorOringandtype-2(ProgrammableFrequency)

indicator.Integratedwith150V70mΩPowerMOSFET

OutputDiodeCompensationinPSRMode

Theflybackconverterisspecificallyoptimizedforlowcost,Cycle-by-CycleCurrentSenseLimit

smallsizeisolatedflyabackconfiguration,witheitherPrecisionVoltageReference

primary-sideregulation(PSR)orsecondary-sideregulationFrequencyModulationforEMIreduction

(SSR).Thedeviceintegratesahighvoltagestart-upcircuit,ProgrammableSoft-start

usingcurrentmode,quasiconstant-frequencycontroltoOLPCompensationforWide-inputRange

avoidsub-harmonicoscillationsandnoneedofslopeExternallyProgrammableThermalShutdown

compensation.ProgrammableLineUnderVoltageLockout(UVLO)

withAdjustableHysteresis

SY56816isavailableinaQFN4mmx6mm-38pinHiccupProtectionforOLP,SCP,OVPandThermal

package.Shutdown

Applications

IEEE802.3af/at-CompliantDevices

SecurityCameras

VideoTelephones

WLANAccessPoints

IoTDevices

TypicalApplication

T1VOUT

L1

RUV1CSNBR

C2C3SNB2DS

RUV2CUVCO

RSNB1

VDDUVLOCSSDSNB

T2PSS

DRAIN

transformerDEN

FromEthernetEthernetFromRDENSOURCE

ROLC

CS/OTP

CLSR

RadjR

CCLSCS

1TVS1CCS

D

PGΘOTP

VCCRNTC

VSS

CVCC

R

AMPSRVCCDVCCFB1

RMPSFB

COMP

APDRFB2

MODE/FRS

RTNGND

RAPD1

+

AdapterRAPD2OringDiode

-

Fig.1TypicalApplication-IsolatedPSRFlybackConverter

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SY56816

T1VOUT

L1

RUV1CSNBR

C2C3SNB2DS

RUV2CUVCO

RSNB1

VDDUVLOCSSDSNB

T2PSS

DRAIN

transformerDEN

FromEthernetEthernetFromRDENSOURCE

ROLC

CLSCS/OTP

RRadjR

CCLSCS

1TVS1CCS

ΘD

PGOTP

VCCRNTC

VSS

CVCCRS1RS2

RVCCDVCC

AMPSUS2

RMPSFB

APDCOMP

RS4CS1

MODE/FRSRFRS

RTNGND

US1

RAPD1RS3

+

AdapterRAPD2OringDiode

-

Fig.2TypicalApplication-IsolatedSSRFlybackConverte

OrderingInformationPinout(topview)

RTNRTN

33

32

31

38

37

36

35

34

DRAIN130DRAIN

DRAIN229DRAIN

DRAIN328DRAIN

OrderingDRAIN427DRAIN

PackagetypeTopmarkDRAIN526DRAIN

PartNumber

6

DRAINExposedpad25DRAIN

QFN4X6-38DRAIN

SY56816XTQGNQxyz

RoHS-CompliantandHalogen-Free

VSS724N/C

T2P823GND

x=yearcode,y=weekcode,z=lotnumbercodeMODE/FRS922VCC

PG1021UVLO

VDD1120CS/OTP

17

18

19

12

13

14

15

16

AMPSDENCLSAPDN/CSSFBCOMP

PinDescription

PinNoPinNamePinDescription

1,2,3,4,5,6,

DRAINDrainoftheinternalFlybackpowerMOSFET.

25,26,27,28,29,30

7VSSNegativepowersupplyterminalfromPoEinputpowerrail.

Type-2PSEindicator.T2Pisanopen-drainoutput.T2PpulledlowtoRTN

8T2P

indicatesthepresenceofaType-2PSEorthepresenceofawalladapter.

PSR/SSRmodesettingandSSRfrequencysettingpin.Connectaresistorfrom

9MODE/FRS

FRStoGNDtoprogramtheconverterswitchingfrequencyinSSRMode.

PDsupplypowergoodindicatorandpowerdowninput.Thissignalenablesthe

DC-DCconverterinternally.Itispulledupbyinternal3.3Vvoltagesource;leave

10PG

floatinginapplication.PullingPGdownduringoperationwillshutdownthe

flybackconverter,forcingsleepmode.

11VDDPositivepowersupplyterminalforPoEandconverterinputpowerrail.

AutomaticMPScontrol.Connectaresistorwithappropriatepowerrating(to

12AMPSsupporttheMPScurrent)fromAMPStoVSStoprogramtheMPScurrent

amplitude.LeaveAMPSopenifnotused.

13DENDetection.Connecta24.9kΩresistorbetweenVDDandDENforPoEdetection.

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SY56816

Classification.ConnectaresistorfromCLStoVSStoprogramtheclassification

14CLS

current.

Adaptorpowerinputdetector.DriveVDD-APDabove1.5Vtodisablehot-swap

15APD

MOSFETandCLASSfunctionsandforceT2PandPGactive.

16,24N/CNotconnectedinternally.

Soft-startsettingpin.AcapacitorfromSStoGNDpinsetsthesoft-start(ISSC

17SS

chargecurrent)fortheDC-DCconverter.

Outputvoltagefeedbackpin.Connectaresistordividerfromsensingwindingto

18FBregulateoutputvoltageinPSRmode.InSSRmode,theFBshouldbe

connectedtoGND.

Loopcompensationpin.LetitfloatinPSRmode,andinternallypulledupto

19COMP

3.3Vthrough10kresistorinSSRmode.

20CS/OTPCurrentsenseandexternalover-temperatureprotectionpin.

Inputundervoltagedetector.Theinputvoltageisscaleddownandsampled

21UVLOusingaresistordivider.TheconverterisenabledonceVUVLOexceedstheenable

threshold.

DC-DCinternalcircuitsupplypin.Connectabypasscapacitorbetweenthispin

22VCC

toGND.

23GNDFlybackconverterground.

31,32,33,34,35,36SOURCESourceoftheinternalFlybackpowerMOSFET.

37,38RTNDrainofPDhot-swapMOSFET.ConnectGNDtoRTNinPCBlayout.

ExposedThisisthethermalflagfortheICandshouldbesolderedtotheplanewhichis

EP

padconnectedtoDRAIN.

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SY56816

BlockDiagram

VDDAPD

DetectionInrushand

2.7V-10.1Vcurrentlimit

DENStart-upT2P

Delaycontrol

IOTP

ControlLogic

CLSClassificationGateDriverRTN

14.5V-20.5V

PG

MarkEventCurrent/Voltage

6.9V-10.1Vsense

VSSRTN

MPSV

MPSVDD

Temperatureenable

IOTP

Detection

MPSAutoMPS

thresholdcontrol

AMPS

VDDPG

Internaltemperature

IOTP

Detection

VCCchargeVCC

HVstartup

MODEMODEcontrol

MODE/FRSSelectionCOT

FRSSettingcontrolPWMIOTP

comparatorDRAIN

3.3V

PWMlogic

COMPtoFsw

10k

MODE&MODE

COMPtoPKCurrentcyclebycyclehiccup

OCP

COMPSOURCE

1.2VVpkCurrentsense

&CS/OTP

Soft-start

EApeaklimit

SSblock

PWM

OLP

COMPcompensation

FB

1.45V

OCP

OLP

OVPTimer

0.16V

SCP

EOTPprotectionhiccup

UVLOSCP

0.25V

UVLO

UVLODelay

1.23VPWMB

V

OTPOTP_REF

EOTP

Delay

Fig.3BlockDiagram

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SY56816

AbsoluteMaximumRatings

Parameter(Note1)MinMaxUnit

PinsVoltageRespectstoVSS

VDD,RTN,DEN,APD,T2P-0.3100

V

AMPS(Note6),CLASS(Note6)-0.35.5

PinsVoltageRespectstoRTN(Note7)

VDD,T2P-0.3100V

PinsVoltageRespectstoGND

VDD-0.3100

DRAIN-0.3150

VCC-0.320

V

UVLO-0.316

FB,MODE/FRS,CS/OTP,PG-0.33.3

COMP,SS-0.33.6

PinsCurrent:

T2PSinkCurrent15

PGSinkCurrent0.8mA

AMPSSourcecurrent15

JunctionTemperature,Operating-45150

LeadTemperature(Soldering,10sec.)260°C

StorageTemperature-65150

VESDElectrostaicHuman-bodymodel(HBM),perANSI/ESDA/JEDECJS-001-2023±2000

V

DischargeCharged-devicemodel(CDM),perANSI/ESDA/JEDECJS-002-2022±750

ThermalInformation

Parameter(Note2)MinMaxUnit

RθJAJunction-to-ambientThermalResistance29.5

RθJCtopJunction-to-case(top)Therma