Texas Instruments LP8754 Handleiding

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110100100010000

EFFICIENCY (%)

OUTPUT CURRENT (mA)

Low-Power PFM Mode

PFM Mode

PWM Mode

C027

V

IN

= 3.7 V, V

OUT

= 1.1 V

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LP8754

SNVS861A–FEBRUARY2014–REVISEDAUGUST2014

LP8754Multi-PhaseSix-CoreStep-DownConverter

1Features3Description

TheLP8754isdesignedtomeetthepower

1

•SixHigh-EfficiencyStep-DownDC/DCConverter

managementrequirementsofthelatestapplications

Cores:

processorsinmobilephonesandsimilarportable

–MaxOutputCurrent10A

applications.Thedevicecontainssixstep-down

–CoresBundledtoa6-PhaseConverter

DC/DCconvertercores,whicharebundledtogether

ina6-phasebuckconverter.Thedeviceisfully

–LoadCurrentReporting

controlledbyaDynamicVoltageScaling(DVS)

–ProgrammableOvercurrentProtection(OCP)

interfaceoranI

2

C-compatibleserialinterface.

–AutoPWM/PFMandForced-PWMOperations

TheautomaticPWM/PFMoperationtogetherwiththe

andAutomaticLowPower-ModeSetting

automaticphaseadding/sheddingmaximizes

–AutomaticPhaseAdding/Shedding

efficiencyoverawideoutputcurrentrange.The

LP8754supportsremotedifferentialvoltagesensing

–RemoteDifferentialFeedbackVoltageSensing

tocompensateIRdropbetweentheregulatoroutput

–OutputVoltageRampControl

andthepoint-of-loadthusimprovingtheaccuracyof

–V

OUT

Range=0.6Vto1.67V

theoutputvoltage.

•I

2

C-CompatibleInterfacewhichSupportsStandard

Theprotectionfeaturesincludeshort-circuit

(100kHz),Fast(400kHz),andHigh-Speed(3.4

protection,currentlimits,inputOVP,UVLO,

MHz)Modes

temperaturewarning,andshutdownfunctions.

•FourSelectableI

2

CAddresses

Severalerrorflagsareprovidedforstatusinformation

oftheIC.Inaddition,I

2

Cread-backincludestotal

•InterruptFunctionwithProgrammableMasking

loadcurrentandloadcurrentforeachbuckcore:The

•OutputShort-CircuitandInputOvervoltage

LP8754hastheabilitytosensecurrentbeing

Protection(OVP)

deliveredtotheloadwithouttheadditionofcurrent

•SpreadSpectrumandPhaseControlforEMI

senseresistors.Duringstart-up,thedevicecontrols

Reduction

theoutputvoltageslewratetominimizeovershoot

andtheinrushcurrent.

•OvertemperatureProtection(OTP)

•UndervoltageLock-out(UVLO)

DeviceInformation

(1)

PARTNUMBERPACKAGEBODYSIZE(MAX)

2Applications

LP8754DSBGA(49)3.022mmx2.882mm

•SmartPhones,eBooksandTablets

(1)Forallavailablepackages,seetheorderableaddendumat

•GSM,GPRS,EDGE,LTE,CDMAandWCDMA

theendofthedatasheet.

Handsets

Efficiencyvs.LoadCurrent

•GamingDevices

1

AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,

intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.

Product specificaties