Texas Instruments LP87524J-Q1 Handleiding

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SW_B2

VIN_B0

VIN_B1

VIN_B2

VIN_B3

VANA

V

IN

FB_B2

NRST

SDA

SCL

nINT

CLKIN

GNDs

EN1 (GPIO1)

EN2 (GPIO2)

EN3 (GPIO3)

PGOOD

LOAD

V

OUT3

SW_B3

FB_B3

LOAD

V

OUT4

SW_B0

FB_B0

LOAD

V

OUT1

SW_B1

FB_B1

LOAD

V

OUT2

Copyright © 2017, Texas Instruments Incorporated

Output Current (A)

Efficiency (%)

0.0010.010.1155

50

60

70

80

90

100

D922

1PH, VOUT = 1V, AUTO

1PH, VOUT = 1.8V, AUTO

1PH, VOUT = 2.5V, AUTO

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AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,

intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.

LP87524B-Q1

LP87524J-Q1

,

LP87524P-Q1

SNVSAW2B–APRIL2017–REVISEDDECEMBER2018

LP87524B/J/P-Q1Four4-MHzBuckConvertersforAWRandIWRMMICs

1

1Features

1

•QualifiedforAutomotiveApplications

•AEC-Q100QualifiedWiththeFollowingResults:

–DeviceTemperatureGrade1:–40°Cto

+125°CAmbientOperatingTemperature

•InputVoltage:2.8Vto5.5V

•OutputVoltage:0.6Vto3.36V

•FourHigh-EfficiencyStep-DownDC-DCConverter

Cores:

–TotalOutputCurrentUpTo10A

–OutputVoltageSlew-Rate3.8mV/µs

•4-MHzSwitchingFrequency

•Spread-SpectrumModeandPhaseInterleaving

•ConfigurableGeneralPurposeI/O(GPIOs)

•I

2

C-CompatibleInterfacewhichSupportsStandard

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

High-Speed(3.4MHz)Modes

•InterruptFunctionwithProgrammableMasking

•ProgrammablePowerGoodSignal(PGOOD)

•OutputShort-CircuitandOverloadProtection

•OvertemperatureWarningandProtection

•OvervoltageProtection(OVP)andUndervoltage

Lockout(UVLO)

2Applications

•AutomotiveInfotainment

•Cluster

•Radar

•CameraPower

SimplifiedSchematic

3Description

TheLP87524B/J/P-Q1isdesignedtomeetthepower

managementrequirementsofthelatestprocessors

andplatformsinvariousautomotivepower

applications.Thedevicecontainsfourstep-downDC-

DCconvertercores,whichareconfiguredas4single

phaseoutputs.ThedeviceiscontrolledbyanI

2

C-

compatibleserialinterfaceandbyenablesignals.

TheautomaticPFM/PWM(AUTOmode)operation

maximizesefficiencyoverawideoutput-current

range.TheLP87524B/J/P-Q1supportsremote

voltagesensingtocompensateIRdropbetweenthe

regulatoroutputandthepoint-of-load(POL)thus

improvingtheaccuracyoftheoutputvoltage.In

additiontheswitchingclockcanbeforcedtoPWM

modeandalsosynchronizedtoanexternalclockto

minimizethedisturbances.

TheLP87524B/J/P-Q1devicesupportsload-current

measurementwithouttheadditionofexternalcurrent-

senseresistors.Inaddition,theLP87524B/J/P-Q1

supportsprogrammablestart-upandshutdown

delaysandsequencessynchronizedtoenable

signals.ThesequencescanalsoincludeGPIO

signalstocontrolexternalregulators,loadswitches

andprocessorreset.Duringstart-upandvoltage

change,thedevicecontrolstheoutputslewrateto

minimizeoutputvoltageovershootandthein-rush

current.

DeviceInformation

(1)

PARTNUMBERPACKAGEBODYSIZE(NOM)

LP87524B-Q1

VQFN-HR(26)4.50mm×4.00mmLP87524J-Q1

LP87524P-Q1

(1)Forallavailablepackages,seetheorderableaddendumat

theendofthedatasheet.

EfficiencyvsOutputCurrent

Product specificaties