Texas Instruments LP87522-Q1 Handleiding

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Output Current (A)

Efficiency (%)

0.0010.010.1110

50

60

70

80

90

100

D531

4PH, Vout=1.8V, Vin=3.7V

3PH, Vout=1.8V, Vin=3.7V

2PH, Vout=1.8V, Vin=3.7V

1PH, Vout=1.8V, Vin=3.7V

SW_B0

SW_B1

SW_B2

SW_B3

FB_B0

FB_B1

Configurable

multi-phase

1 - 4

Outputs

FB_B2

FB_B3

VIN_B0

VIN_B1

VIN_B2

VIN_B3

VANA

V

IN

NRST

SDA

SCL

nINT

CLKIN

EN1 (GPIO1)

EN2 (GPIO2)

EN3 (GPIO3)GNDs

PGOOD

Product

Folder

Order

Now

Technical

Documents

Tools &

Software

Support &

Community

AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,

intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.

LP87521-Q1

LP87522-Q1

,

LP87523-Q1

,

LP87524-Q1

,

LP87525-Q1

SNVSB23–MARCH2018

LP8752x-Q110-ABuckConverterWithIntegratedSwitches

1

1Features

1

•QualifiedforAutomotiveApplications

•AEC-Q100QualifiedWiththeFollowingResults:

–DeviceTemperatureGrade1:–40°Cto

+125°CAmbientOperatingTemperature

–DeviceHBMESDClassificationLevel2

–DeviceCDMESDClassificationLevelC4B

•InputVoltage:2.8Vto5.5V

•OutputVoltage:0.6Vto3.36V

•FourHigh-EfficiencyStep-DownDC/DCConverter

Cores:

–MaximumOutputCurrent:10A

•SwitchingFrequency:2MHz

•Spread-SpectrumModeandPhaseInterleaving

•ConfigurableGeneralPurposeI/O(GPIOs)

•I

2

C-CompatibleInterfaceThatSupportsStandard

(100kHz),Fast(400kHz),Fast+(1MHz),and

High-Speed(3.4MHz)Modes

•InterruptFunctionWithProgrammableMasking

•ProgrammablePower-GoodSignal(PGOOD)

•OutputShort-CircuitandOverloadProtection

•OvertemperatureWarningandProtection

•OvervoltageProtection(OVP)andUndervoltage

Lockout(UVLO)

2Applications

AutomotiveInfotainment,Cluster,Radar,and

CameraPowerApplications

space

SimplifiedSchematic

3Description

TheLP8752x-Q1deviceisdesignedtomeetthe

power-managementrequirementsofthelatest

processorsandplatformsinvariousautomotive

powerapplications.Thedevicecontainsfourstep-

downDC/DCconvertercores,whichareconfigured

asa4-phaseoutput,3-phaseand1-phaseoutputs,

2-phaseand2-phaseoutputs,one2-phaseandtwo

1-phaseoutputs,orfour1-phaseoutputs.Thedevice

iscontrolledbyanI

2

C-compatibleserialinterfaceand

byenablesignals.

Theautomaticpulse-width-modulation(PWM)to

pulsed-frequency-modulation(PFM)operation(AUTO

mode),togetherwiththeautomaticphaseaddingand

phaseshedding,maximizesefficiencyoverawide

output-currentrange.TheLP8752x-Q1supports

remotedifferential-voltagesensingformultiphase

outputstocompensateIRdropbetweentheregulator

outputandthepoint-of-load(POL)improvingthe

accuracyoftheoutputvoltage.Theswitchingclock

canbeforcedtoPWMmodeandalsosynchronized

toanexternalclocktominimizethedisturbances.

TheLP8752x-Q1devicesupportsload-current

measurementwithouttheadditionofexternalcurrent-

senseresistors.Thedevicealsosupports

programmablestart-upandshutdowndelaysand

sequencessynchronizedtoenablesignals.The

sequencescanincludeGPIOsignalstocontrol

externalregulators,loadswitches,andprocessor

reset.Duringstart-upandvoltagechange,thedevice

controlstheoutputslewratetominimizeoutput-

voltageovershootandin-rushcurrent.

DeviceInformation

(1)

PARTNUMBERPACKAGEBODYSIZE(NOM)

LP87521-Q1

VQFN-HR(26)4.50mm×4.00mm

LP87522-Q1

LP87523-Q1

LP87524-Q1

LP87525-Q1

(1)Forallavailablepackages,seetheorderableaddendumat

theendofthedatasheet.

EfficiencyvsOutputCurrent

Product specificaties