2024年5月2日发(作者：)

TIDesigns

1-kW/36-VPowerStageforBrushlessMotorinBattery

PoweredGardenandPowerTools

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TIDesignsprovidethefoundationthatyouneed

includingmethodology,testinganddesignfilesto

gns

helpyouaccelerateyourtimetomarket.

DesignResources

TIDA-00285

CSD18540Q5B

DRV8303

TPS54061

OPA2374

TPD4S009

LMT84

TMS320F28027F

LAUNCHXL-F28027F

ToolFolderContainingDesignFiles

ProductFolder

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DesignFeatures

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1-kWPowerStageWithFieldOrientedControlfor

PermanentMagnetSynchronousMotors

DesignedtoOperatefrom10-CellLi-IonBattery

VoltageRangingfrom30to42V

Deliversupto30-A

RMS

ContinuousMotorCurrent

WithanAirflowof400LFM

SmallPCBFormFactorof57×59mmUsing60-

V/400-A

PEAK

,1.8-mΩR

DS_ON

,SON5x6Package

MOSFETsforPowerStage

UsesDRV8303Three-PhaseGateDriver,Which

CanOperatefrom6to60-VInput,Supporting

ProgrammableGateCurrentWithMaximum

Settingof2.3-ASink/1.7-ASource

OvercurrentProtectionConfigurableforCycle-by-

CycleControlorLatchShutdown

SenseFeedbackofIndividualPhaseVoltage,DC

BusVoltage,andLow-SideCurrentonEachPhase

forSensorlessControl

CanSupportBrushlessDCMotorControlUsing

TrapezoidalMethod

3.3-V/0.15-AStep-DownBuckConverterfor

PoweringMCU

DesignedtoOperateatanAmbientTemperatureof

–20°Cto55°C

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FeaturedApplications

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PowerTools

GardenTools

LawnMoverRobots

VacuumCleaningRobots

Li-ion

battery

pack

36 V

3.3 V

TPS54061

PWMs

DRV8303

Control

and

protection

Three-

phase

NMOS

gate

driver

CSD18540Q5B (x6)

Brushless

motor

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SPI

Offset

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Motor current

feedback

Offset

Voltage

divider

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OPA2374

Input DC voltage feedback

Temperature sensor output

T

P

D

4

5

0

0

9

(

T

V

S

)

Motor voltage feedback

LMT84

Alltrademarksarethepropertyoftheirrespectiveowners.

TIDU708–February2015

SubmitDocumentationFeedback

1-kW/36-VPowerStageforBrushlessMotorinBatteryPoweredGardenand

PowerTools

Copyright©2015,TexasInstrumentsIncorporated

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1

Introduction

AnIMPORTANTNOTICEattheendofthisTIreferencedesignaddressesauthorizeduse,intellectualpropertymattersandother

importantdisclaimersandinformation.

1Introduction

Thisreferencedesignisapowerstageforbrushlessmotorsinbattery-poweredgardenandpowertools

erstageoperatesfroma10-celllithium-ionbatterywithavoltagerangefrom36

ignusesCSD18540Q5BNexFETsfeaturingaverylowdrain-to-sourceresistance

(R

DS_ON

)of1.8mΩinaSON5x6SMDpackage,whichresultsinaverysmallformfactorof57×59mm.

Thethree-phasegate-driverDRV8303isusedtodrivethethree-phaseMOSFETbridge,whichcan

operatefrom6to60Vandsupportprogrammablegatecurrentwithmaximumsettingof2.3-Asink/1.7-A

erign

supportssensorlesscontrolforbrushlessDC(BLDC)andpermanentmagnetsynchronousmotors

(PMSM)usingtrapezoidalcontrolorfieldorientedcontrol(FOC).TheC2000™Piccolo™LaunchPad™is

usedwiththepowerstagetoimplementInstaSPIN™-FOCusingthemotorcurrentandvoltagefeedback.

Thecorrespondingtestreportevaluatesthethermalperformanceoftheboardandovercurrentprotection

featuressuchascycle-by-cyclecontrolandlatchcontroloftheDRV8303.

Powertoolsareusedinvariousindustrialandhouseholdapplicationssuchasdrilling,grinding,cutting,

polishing,drivingfasteners,variousgardentools,tcommontypesofpowertoolsuse

electricmotorswhilesomeuseinternalcombustionengines,steamengines,orcompressedair.

Powertoolscanbeeithercordedorcordless(battery-powered).Cordedpowertoolsusethemainspower

(thegridpower)dlesstoolsusebatterypowertodriveDC

thecordlesstoolsuselithium-ionbatteries,m-ion

batterieshavehighenergydensity,lowweight,atterieshaverelativelylowself-

discharge(lessthanhalfthatofnickel-basedbatteries)andcanprovideaveryhighcurrentfor

shlessmotorsaremore

efficientandhavelessmaintenance,lownoise,andlongerlife.

ore,high-efficientpower

ormfactorofthepower

stageenablesdesignflexibilityforoptimalcoolingmethodandplacementofthepowerstageclosetothe

ficiencyprovides

ficiencyrequirementinturnasksfor

switchingdeviceswithlowR

DS_ON

.Thepowerstageshouldalsotakecareofprotectionslikemotorstallor

anyotherchanceofhighcurrent.

Theobjectiveofthisreferencedesignistoprovidea1-kW/36-Vpowerstageforbrushlessmotorsusedin

batterypoweredapplications(likepowertools,gardentools,andsoon).Thisdesigndemonstratesthe

powerstageinasmallformfactor(57×59mm)operatingfroma36-VDCinput(usinga10-cellLi-ion

battery)anddeliversupto30-A

RMS

ignalsoprovides

erpowerlevels,thecoolingisprovidedbyforced

air,whichallowsforthesmallformfactor.

2

1-kW/36-VPowerStageforBrushlessMotorinBatteryPoweredGardenand

PowerTools

Copyright©2015,TexasInstrumentsIncorporated

TIDU708–February2015

SubmitDocumentationFeedback