矽力杰 Silergy SY8501 7-100V 输入 1A 输出高效同步降压稳压器 规格书 (Datasheet)佰祥电子

SY8501

HighEfficiency,1.0A,100VInput

SynchronousStepDownRegulator

GeneralDescriptionFeatures

TheSY8501developsahighefficiencysynchronousLowRDS(ON)forInternalSwitches(Top/Bottom):

stepdownDC/DCregulatorcapableofdelivering1.0A500mΩ/240mΩ

current.TheSY8501operatesoverawideinput7-100VInputVoltageRange

voltagerangefrom7Vto100Vandintegratesamain1AOutputCurrentCapability

switchandasynchronousswitchwithverylowRDS(ON)AdjustableSwitchingFrequency

tominimizetheconductionloss.InstantPWMArchitecturetoAchieveFast

TransientResponses

ThedeviceadoptstheinstantPWMarchitectureto2msInternalSoft-startLimitstheInrushCurrent

achievefasttransientresponsesforhighstepdown

Precise±2%1.2VReference

applications.

RoHSCompliantandHalogenFree

CompactPackage:SO8E

OrderingInformation

SY8501□(□□)□Applications

TemperatureCode

PackageCodeNon-IsolatedTelecommunicationBuckRegulator

OptionalSpecCodeSecondaryHighVoltagePostRegulator

OrderingNumberPackagetypeNoteAutomotiveSystems

SY8501FCCSO8E--

TypicalApplications

Efficiencyvs.LoadCurrent

100

90

VIN

INBS80

C

BS)70

CINRONVOUT

C1(opt.)%

(

60

RONLXy

c

Ln50

e

R1COUTi

c

i

f40

ON/OFFENFBf

E

R30VIN=7V,VOUT=5V

D12V=24V,V=5V

20INOUT

GNDVCCVIN=48V,VOUT=5V

10V=100V,V=5V

CVCCINOUT

0

0.0010.010.11

LoadCurrent(A)

Figure1.SchematicDiagramFigure2.Efficiency

SY8501Rev.1.0SilergyCorp.Confidential-PreparedforCustomerUseOnly1

©2019SilergyCorp.AllRightsReserved.

SY8501

Pinout(topview)

NC18LX

IN2GND7BS

Exposed

EN3Pad6VCC

RON45FB

(SO8E)

TopMark:AMAxyzforSY8501FCC(Devicecode:AMA,x=yearcode,y=weekcode,z=lotnumbercode)

PinNamePinNumberPinDescription

NC1Notconnected.

IN2Inputpin.DecouplethispintoGNDwithalowESRceramiccapacitor.

Enablecontrol.Thedevicehasanaccurate1.21Vrisingthreshold.Thispincan

EN3

alsobeusedforprogrammingtheVINturnonvoltagewiththeresistordivider.

ConnectaresistorfromthispintoINtosetthetopswitchONtime.Theswitching

frequencycanbecalculatedusingthefollowingequation:

RON4

11V(V)+500O

FS(kHz)=

R(MONΩ)

Outputfeedbackpin.Connectthispintothecenterpointoftheoutputresistor

FB5

divider(asshowninFigure1)toprogramtheoutputvoltage:VOUT=1.2×(1+R1/R2)

VCC6SupplyinputoftheinternalLDO.

Boot-strappin.Supplyhighsidegatedriver.DecouplethispintotheLXpinwith

BS7

a0.1µFceramiccapacitor.

LX8Inductorpin.Connectthispintotheswitchingnodeoftheinductor.

GNDExposedPadGroundpin.

SY8501Rev.1.0SilergyCorp.Confidential-PreparedforCustomerUseOnly2

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SY8501

BlockDiagram

Linear

RegulatorIN

Linear4V_VDD

VCCRegulatorBS

ONTimerPWMControl

RON&

ProtectLogic

LX

EN4V_VDD

FBGND

INThermal

1.2VREFUVLOShutdown

Figure3.BlockDiagram

AbsoluteMaximumRatings(Note1)

SupplyInputVoltage------------------------------------------------------------------------------------------------0.3Vto100V

EN,RONVoltage------------------------------------------------------------------------------------------0.3VtoVIN+0.3V

LXVoltage-----------------------------------------------------------------------------------------------------0.7VtoVIN+0.3V

BSVoltage------------------------------------------------------------------------------------------------------0.3VtoLX+6V

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

DynamicLXVoltagein10nsDuration--------------------------------------------------------------------IN+3VtoGND-5V

RecommendedOperatingConditions(Note3)

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

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

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

SY8501Rev.1.0SilergyCorp.Confidential-PreparedforCustomerUseOnly3

©2019SilergyCorp.AllRightsReserved.

SY8501

ElectricalCharacteristics

(VIN=48V,VOUT=12V,L=47µH,COUT=10uF,TA=25°C,IOUT=1A,unlessotherwisespecified)

ParameterSymbolTestConditionsMinTypMaxUnit

InputVoltageRangeVIN7100V

QuiescentCurrentIQIOUT=0,VFB=VREF×105%400µA

ShutdownCurrentISHDNEN=0510µA

FeedbackReference

V1.1761.21.224V

VoltageREF

FBInputCurrentIFBVFB=3.3V-5050nA

TopFETRONRDS(ON)1500mΩ

BottomFETRONRDS(ON)2240mΩ

TopFETpeakCurrent

I1.8A

LimitLIM,TOP

BottomFETValley

I1A

CurrentLimitLIM,BOTTOM

ENRisingThresholdVENH1.111.211.31V

ENFallingThresholdVENL1.081.181.28V

InputUVLORising

V66.57V

ThresholdUVLO

InputUVLOHysteresisVHYS0.5V

ProgrammableSwitching11V(V)+500O

FSFS(kHz)=2001000kHz

FrequencyRangeR(MONΩ)

MinONTimetON120ns

MinOFFTimetOFF350ns

ThermalShutdown

T150°C

TemperatureSD

ThermalShutdown

T15°C

HysteresisHYS

Note1:Stressesbeyondthe“AbsoluteMaximumRatings”maycausepermanentdamagetothedevice.Theseare

stressratingsonly.Functionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedinthe

operationalsectionsofthespecificationisnotimplied.Exposuretoabsolutemaximumratingconditionsfor

extendedperiodsmayaffectdevicereliability.

Note2:θJAismeasuredinthenaturalconvectionatTA=25°Conaloweffective4-layerthermalconductivitytest

boardofJEDEC51-3thermalmeasurementstandard.PaddleofSO8EpackageisthecasepositionforθJC

measurement.

Note3:Thedeviceisnotguaranteedtofunctionoutsideitsoperatingconditions.

SY8501Rev.1.0SilergyCorp.Confidential-PreparedforCustomerUseOnly4

©2019SilergyCorp.AllRightsReserved.

SY8501

TypicalPerformanceCharacteristics

Efficiencyvs.LoadCurrentEfficiencyvs.LoadCurrent

100100

9090

8080

70

)

)70

%

%

((60

60

y

y

c

c

n

n5050

e

e

i

i

c

c

i

i40

f

f40

f

fVIN=18V,VOUT=12V

EE

VIN=7V,VOUT=5V30

30VIN=24V,VOUT=12V

VIN=24V,VOUT=5V

2020VIN=48V,VOUT=12V

V=48V,V=5V

INOUTV=100V,V=12V

1010INOUT

VIN=100V,VOUT=5V

00

0.0010.010.110.0010.010.11

LoadCurrent(A)LoadCurrent(A)

LoadRegulationLoadRegulation

5.0212.1

5.0012.0

)

V

)

(

4.98V11.9

e

(

g

e

a

t

g

l

a

o

t

4.96l11.8

V

o

t

V

u

tVIN=18V,VOUT=12V

pVIN=7V,VOUT=5V

t

u

u

4.94p11.7

tVIN=24V,VOUT=12V

VIN=24V,VOUT=5V

O

u

VIN=48V,VOUT=12V

VIN=48V,VOUT=5VO

4.9211.6VIN=100V,VOUT=12V

VIN=100V,VOUT=5V

4.9011.5

00.20.40.60.811.200.20.40.60.811.2

LoadCurrent(A)LoadCurrent(A)

LineRegulationLineRegulation

5.0212.1

5.0012.0

)

)

V

V

(

(

4.9811.9

e

e

g

g

a

a

t

t

l

l

o

4.96o11.8

V

V

t

t

u

u

p

p

t

I=0A,V=5VtI=0A,V=12V

4.94OUTOUT