矽力杰 Silergy SY89001 7-100V 输入 1A 输出 200-600kHz 可编程瞬时 PWM 高效同步降压稳压器 规格书 (Datasheet)佰祥电子

SY89001

HighEfficiency,1A,100VInput

SynchronousStepDownRegulator

GeneralDescriptionFeatures

TheSY89001developsahighefficiencysynchronousLowRDS(ON)forInternalSwitches

step-downDC/DCconvertercapableofdelivering1A(Top/Bottom):500mΩ/240mΩ

current.TheSY89001operatesoverawideinput7-100VInputVoltageRange

voltagerangefrom7Vto100Vandintegratesmain1AOutputCurrentCapability

switchandsynchronousswitchwithverylowRDS(ON)ConstantOn-timeControl

tominimizetheconductionloss.TheSY89001always

InstantPWMArchitecturetoAchieveFast

operatesundercontinuousconditionmode.Thedevice

TransientResponses

adoptstheinstantPWMarchitecturetoachievefast

ProgrammableSwitchingFrequencyRange:

transientresponsesforhighstepdownapplications.

200kHz~600kHz

2msInternalSoft-startLimitstheInrushCurrent

OrderingInformationPrecise±2%1.225VReferenceover

-40°Cto+125°CTemperatureRange

SY89001□□□)□

(Cycle-by-cyclePeakCurrentLimit

TemperatureCode

OverTemperatureProtectionwithAuto

PackageCode

Recovery

OptionalSpecCode

RoHSCompliantandHalogenFree

OrderingNumberPackagetypeNoteCompactPackageSO8E

SY89001FCCSO8E--

Applications

IsolatedTelecomBiasSupply

SecondaryHighVoltagePostRegulator

AutomotiveSystems

TypicalApplications

Efficiencyvs.OutputCurrent

(IOUT=0~1A,L=33µH/CDRH8D43-330MC)

100

90

VIN80

INBS

C)70

CRBS

INONC(opt.)VOUT%

1(

60

R3RONLXy

c

Ln50

Ce

R1OUTi

c

i

f40

ENFBf

E30VIN=12V,VOUT=5V

D1R2

R4VIN=24V,VOUT=5V

GNDVCC20

VIN=48V,VOUT=5V

CVCC10VIN=75V,VOUT=5V

0

0.0010.010.11

OutputCurrent(A)

Figure1.SchematicDiagramFigure2.Efficiencyvs.OutputCurrent

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SY89001

Pinout(topview)

NC18LX

IN2GND7BS

Exposed

EN3Pad6VCC

RON45FB

(SO8E)

TopMark:CRDxyz(Devicecode:CRD;x=yearcode,y=weekcode,z=lotnumbercode)

PinNamePinNumberPinDescription

NC1Notconnected.

IN2Inputpin.DecouplethispintoGNDwithalowESRceramiccapacitor.

EN3Enablecontrolpin.ThispincanalsobeusedforprogrammingVINturnonvoltage

withtheresistordivider.Thedevicehasanaccurate1.225Vrisingthreshold.

RON4ConnectaresistorfromthispintotheINtosetthetopswitchONtime.The

switchingfrequencycanbecalculatedusingthefollowingequation:

11V(V)+500

f(kHz)=OUT

sR(M)

ON

FB5Outputfeedbackpin.Connectthispintothecenterpointoftheoutputresistor

divider(asshowninFigure1)toprogramtheoutputvoltage:

VOUT=1.225×(1+R1/R2)

VCC6SupplyinputofinternalLDO.

BS7Boot-StrapPin.Supplyhighsidegatedriver.DecouplethispintoLXpinwith

0.1uFceramiccapacitor.

LX8Inductorpin.Connectthispintotheswitchingnodeofinductor

GNDExposedPadGroundpin.

BlockDiagram

IN

4V

LDO

VCC

BS

VDD

4.5V

RONONTimer

PWMControl

4V_VDD&

ProtectLogic

7kIEN=20µALX

EN4V_VDD

1.225V

FBGND

INThermal

1.225VREFUVLOShutdown

Figure3.BlockDiagram

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SY89001

AbsoluteMaximumRatings(Note1)

IN------------------------------------------------------------------------------------------------------------0.3Vto100V

EN,RON------------------------------------------------------------------------------------------------------0.3VtoVIN+0.3V

LX--------------------------------------------------------------------------------------------------------------0.7VtoVIN+0.3V

BS-LX---------------------------------------------------------------------------------------------------0.3Vto6V

FBVoltage--------------------------------------------------------------------------------------------------------------0.3Vto6V

VCC--------------------------------------------------------------------------------------------------------------------0.3Vto30V

PowerDissipation,PD@TA=25°C,SO8E-----------------------------------------------------------------------3.3W

PackageThermalResistance(Note2)

θJA-------------------------------------------------------------------------------------------------------------30°C/W

θJC-------------------------------------------------------------------------------------------------------------10°C/W

JunctionTemperatureRange--------------------------------------------------------------------------------------40°Cto150°C

LeadTemperature(Soldering,10sec.)-----------------------------------------------------------------------------------260°C

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

DynamicLXvoltagein50nsDuration--------------------------------------------------------------------VIN+3VtoGND-5V

RecommendedOperatingConditions(Note3)

SupplyInputVoltage-------------------------------------------------------------------------------------------------7Vto100V

JunctionTemperatureRange-------------------------------------------------------------------------------------40°Cto125°C

AmbientTemperatureRange--------------------------------------------------------------------------------------40°Cto85°C

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SY89001

ElectricalCharacteristics

(VIN=48V,VOUT=5V,L=33μH,COUT=10μF,IOUT=1Aunlessotherwisespecified.Typicalvaluecorrespondto

TJ=25°C.Minimumandmaximumlimitsapplyover-40°Cto125°Cjunctiontemperaturerange.)

ParameterSymbolTestConditionsMinTypMaxUnit

InputVoltageRangeVIN7100V

InputUVLORisingThresholdVIN,UVLO5.86.36.8V

InputUVLOHysteresisVHYS0.25V

ShutdownCurrentISHDNEN=0830µA

FeedbackReferenceVoltageVREF1.21.2251.25V

FBInputCurrentIFBVFB=3.3V-5050nA

TopFETRONRDS(ON)1500mΩ

BottomFETRONRDS(ON)2240mΩ

TopFETpeakCurrentLimitI1.42.2A

LIM,TOP

BottomFETValleyCurrentLimitI1A

LIM,BOTTOM

NegativeCurrentLimitI-1.5A

LIM,NEG

VCCInputRisingUVLO

V4.5V

ThresholdVCC,UVLO

VCCInputUVLOHysteresisVVCC,HYS0.3V

ENRisingThresholdVEN1.1851.2251.265V

ENHysteresisInputCurrentIEN,HYS-10-20-29μA

SwitchingFrequencyfOSCVIN=48V,RON=1.1MΩ350500650kHz

MinONTimetON90ns

MinOFFTimetOFF200ns

ThermalShutdownTemperatureTSD150°C

ThermalShutdownHysteresisTHYS15°C

Note1:Stressesbeyondthe“AbsoluteMaximumRatings”maycausepermanentdamagetothedevice.Theseare

stressratingsonly.Functionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedinthe

operationalsectionsofthespecificationisnotimplied.Exposuretoabsolutemaximumratingconditionsfor

extendedperiodsmayaffectdevicereliability.

Note2:θJAismeasuredinthenaturalconvectionatTA=25°Conaloweffective4-layerthermalconductivitytest

boardofJEDEC51-3thermalmeasurementstandard.PaddleofSO8EpackageisthecasepositionforθJC

measurement.

Note3:Thedeviceisnotguaranteedtofunctionoutsideitsoperatingconditions.

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©2019SilergyCorp.AllRightsReserved.

SY89001

TypicalPerformanceCharacteristics

Efficiencyvs.OutputCurrentOutputVoltagevs.OutputCurrent

(IOUT=0~1A,L=33µH/CDRH8D43-330MC)

1004.999

90

4.998

80VIN=12V,VOUT=5V

)VIN=24V,VOUT=5V

V4.998

(

)70

VIN=48V,VOUT=5V

e

%

(

gVIN=75V,VOUT=5V

60

a

y

t4.997

l

c

o

n50

V

e

i

t

c4.997

i

u

f40

f

p

t

E

VIN=12V,VOUT=5Vu

304.996

O

VIN=24V,VOUT=5V

20

V=48V,V=5V

INOUT4.996

10VIN=75V,VOUT=5V

04.995

0.0010.010.1100.10.20.30.40.50.60.70.80.91

OutputCurrent(A)OutputCurrent(A)

StartupfromVINShutdownfromVIN

(VIN=48V,VOUT=5V,IOUT=0A)(VIN=48V,VOUT=5V,IOUT=0A)

VIN50V/divVIN50V/div

VOUT5V/divVOUT5V/div

VLX50V/div

VLX50V/div

IL200mA/div

IL200mA/div

Time(4ms/div)Time(200ms/div)

StartupfromVINShutdownfromVIN

(VIN=48V,VOUT=5V,IOUT=1A)(VIN=48V,VOUT=5V,IOUT=1A)

VIN50V/divVIN50V/div

VOUT5V/divVOUT5V/div

VLX50V/div

VLX50V/div

IL1A/divIL1A/div

Time(4ms/div)Time(200ms/div)

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SY89001

StartupfromEnableShutdownfromEnable

(VIN=48V,VOUT=5V,IOUT=0A)(VIN=48V,VOUT=5V,IOUT=0A)

EN5V/div

EN5V/divVOUT5V/div

VOUT5V/div

VLX50V/div

VLX50V/div