mpt612

MPT612MaximumpowerpointtrackingICRev.2—14September2010Productdatasheet1.GeneraldescriptionTheMPT612,thefirstdedicatedICforperformingtheMaximumPowerPointTracking(MPPT)function,isdesignedforuseinapplicationsthatusesolarphotovoltaic(PV)cellsorinfuelcells.Tosimplifydevelopmentandmaximizesystemefficiency,theMPT612issupportedbyapatent-pendingMPPTalgorithm,anapplication-specificsoftwarelibraryandeasy-to-useapplicationprogramminginterfaces(APIs).DedicatedhardwarefunctionsforPVpanels,includingvoltageandcurrentmeasurementandpanelparameterconfiguration,simplifydesignandspeeddevelopment.TheMPT612isbasedonalow-powerARM7TDMI-SRISCprocessorthatoperatesatupto70MHzandcanachievesystemefficiencyratingsupto98%.Itcontrolstheexternalswitchingdevicethroughasignalderivedfromapatent-pendingMPPTalgorithm.TheDCsourcecanbeconnectedtotheICthroughappropriatevoltageandcurrentsensors.TheICdynamicallyextractsthemaximumpowerfromtheDCsource,withoutuserintervention.TheICcanbeconfiguredforboundaryconditionssetinsoftware.Thereareupto15kBofflashmemoryavailableforapplicationsoftware.Inthisdatasheet,solarPVterminologyhasbeenprimarilyusedasanexample.However,theMPT612isequallyusefulforfuelcellsoranyotherDCsourcewhichhasMPPbehavior.NXPSemiconductorsMPT612MaximumpowerpointtrackingIC2.Featuresandbenefits„ARM7TDMI-S32bitRISCcoreoperatingatupto70MHz„128-bitwideinterfaceandacceleratorenabling70MHzoperation„10-bitADCproviding‹Eightanaloginputs‹Conversiontimesaslowas2.44µsperchannelanddedicatedresultregistersminimizeinterruptoverhead‹Fiveanaloginputsavailableforuserspecificapplications„One32-bittimerandexternaleventcounterwithfourcaptureandfourcomparechannels„One16-bittimerandexternaleventcounterwiththreecomparechannels„LowpowerReal-TimeClock(RTC)withindependentpowersupplyanddedicated32kHzclockinput„Serialinterfacesincluding:‹TwoUARTs(16C550)‹TwoFastI2C-buses(400kbit/s)‹SPIandSSPwithbufferingandvariabledatalengthcapabilities„Vectoredinterruptcontrollerwithconfigurableprioritiesandvectoraddresses„Uptotwentyeight(28),5VtolerantfastgeneralpurposeI/Opins„Upto13edgeorlevelsensitiveexternalinterruptpinsavailable„ThreelevelsofflashCodeReadProtection(CRP)„70MHzmaximumclockavailablefromprogrammableon-chipPLLwithinputfrequenciesbetween10MHzand25MHzandasettlingtimeof100ms„Integratedoscillatoroperateswithanexternalcrystalatbetween1MHzand25MHz„Powersavingmodesinclude:‹Idlemode‹TwoPower-downmodes;onewiththeRTCactiveandwiththeRTCdeactivated„Individualenabling/disablingofperipheralfunctionsandperipheralclockscalingforadditionalpoweroptimization„Processorwake-upfromPower-downandDeeppower-downmodeusinganexternalinterruptortheRTC3.Applications„DCapplicationchargecontrollerforsolarPVpowerandfuel-cells.Theusecasesare‹Batterychargingforhomeappliancessuchaslighting,DCfans,DCTV,DCmotororanyotherDCappliance‹Batterychargingforpubliclightingandsignaling-LEDstreetlighting,garden/drivewaylighting,railwaysignaling,trafficsignaling,remotetelecomterminals/towersetc‹Batterychargingforportabledevices„DC-DCconverterperpaneltoprovideimprovedefficiency„MicroinverterperpanelremovestheneedforonelargesysteminverterMPT612Allinformationprovidedinthisdocumentissubjecttolegaldisclaimers.©NXPB.V.2010.Allrightsreserved.ProductdatasheetRev.2—14September20102of2NXPSemiconductorsMPT612MaximumpowerpointtrackingIC4.OrderinginformationTable1.OrderinginformationTypenumberPackageNameDescriptionVersionMPT612FBD48LQFP48plasticlowprofilequadflatpackage;48leads;body7×7×1.4mmSOT313-25.Blockdiagram001aam089PVVOLTAGEMEASUREMENTPVvoltagesensePVCURRENTMEASUREMENTPVcurrentsenseBATTERYVOLTAGEMEASUREMENTbatteryvoltagesenseBATTERYCURRENTMEASUREMENTbatterycurrentsenseTEMPERATUREMEASUREMENTtemperaturesenseLOADCURRENTMEASUREMENTtheseblocksareneededforMPPTfunctionalitytheseblockscanbeusedforcustomerspecificapplicationPVCONFIGURATIONBLOCKMPT612MPPTALOGIRTHMBATTERYCHARGECYCLEALGORITHMBATTERYCONFIGURATIONBLOCKLOADMANAGEMENTLOADCONFIGURATIONBLOCKloadconfigurationparametersbatteryconfigurationparametersSTATUSINDICATIONPVconfigurationparametersSWITCHCIRCUITCONTROLBATTERYPROTECTIONBLOCKLOADPROTECTIONLEDsPWMbatteryloadloadcurrentsenseTheconfigurationparametersaredeterminedusingthesoftwareFig1.BlockdiagramMPT612Allinformationprovidedinthisdocumentissubjecttolegaldisclaimers.©NXPB.V.2010.Allrightsreserved.ProductdatasheetRev.2—14September20103of3NXPSemiconductorsMPT612MaximumpowerpointtrackingIC6.Pinninginformation6.1PinningFig2.PinConfigurationMPT612FBD48PIO19/MAT1_2/MISO1PIO11/CTS1/CAP1_1/AD4PIO20/MAT1_3/MOSI1PIO10/RTS1/CAP1_0/AD3PIO21/SSEL1/MAT3_0PVCURRENTSENSEVDD(RTC)PVVOLTSENSEBOOSTVDDCPVVOLTSENSEBUCKRSTGNDADCGNDPIO9/RXD1/PWMOUT2PIO27/TRSTPIO8/TXD1/PWMOUT1PIO28/TMSPWMOUT0PIO29/TCKJTAGSELXTAL1RTCKXTAL2RTCX2PIO18/CAP1_3/SDA1PIO17/CAP1_2/SCL1PIO16/EINT0PIO15/RI1/EINT2PIO14/DCD1/SCK1/EINT1GNDVDD(ADC)PIO13/DTR1/MAT1_1VDD(IO)PIO26/AD7PIO25/AD6PIO12/DSR1/MAT1_0/AD5PIO0/TXD0/MAT3_1PIO1/RXD0/MAT3_2PIO30/TDI/MAT3_3PIO31/TDOVDD(IO)PIO2/SCL0GNDRTCX1PIO3/SDA0PIO4/SCK0PIO5/MISO0PIO6/MOSI0001aam0911234567891011123635343332313029282726251314151617