Microchip-dsPIC33-Explorer-16數(shù)字電源開發(fā)方案

MicrochipdsPIC33Explorer16數(shù)字電源開發(fā)方案關鍵詞：電源管理,數(shù)字電源,DC／DC轉換器,AC／DC轉換器Microchip公司的dsPIC33FJxxGSxx系列是高性能16位數(shù)字信號控制器,包括有擴展的DSP功能和高性能16位微控制器(MCU)架構.工作電壓時的性能高達40MIPS,主要用于AC/DC轉換器,汽車電子HID,電池充電器,DC/DC轉換器,數(shù)字照明,電磁爐,LED鎮(zhèn)流器,可再生能源以及UPS等.本文介紹dsPIC33FJxxGSxx系列主要特性,方框圖,多種轉換構成框圖以及Explorer16數(shù)字電源開發(fā)板電路圖.

dsPIC33主要特性:

OperatingRange:

?Upto40MIPSoperation(at3.0-3.6V):

-Industrialtemperaturerange(-40℃to+85℃)

-Extendedtemperaturerange(-40℃to+125℃)

High-PerformanceDSCCPU:

?ModifiedHarvardarchitecture

?Ccompileroptimizedinstructionset

?16-bitwidedatapath

?24-bitwideinstructions

?Linearprogrammemoryaddressingupto4Minstructionwords

?Lineardatamemoryaddressingupto64Kbytes

?83baseinstructions:mostly1word/1cycle

?Two40-bitaccumulatorswithroundingandsaturationoptions

?Flexibleandpowerfuladdressingmodes:

-Indirect

-Modulo

-Bit-Reversed

?Softwarestack

?16x16fractional/integermultiplyoperations

?32/16and16/16divideoperations

?Single-cyclemultiplyandaccumulate:

-AccumulatorwritebackforDSPoperations

-Dualdatafetch

?Upto±16-bitshiftsforupto40-bitdata

DirectMemoryAccess(DMA):

?4-channelhardwareDMA

?1KbytedualportedDMAbufferarea(DMARAM)tostoredatatransferredviaDMA:

-AllowsdatatransferbetweenRAMandaperipheralwhileCPUisexecutingcode(no

cyclestealing)

?MostperipheralssupportDMA

DigitalI/O:

?Upto85programmabledigitalI/Opins

?Wake-up/Interrupt-on-Changeforupto24pins

?Outputpinscandrivevoltagefrom3.0Vto3.6V

?Upto5Voutputwithopendrainconfiguration

?5Vtolerantdigitalinputpins

?16mAsource/sinkonallPWMpins

On-ChipFlashandSRAM:

?Flashprogrammemory(upto64Kbytes)

?DataSRAM(upto8Kbytes)

?BootandGeneralSecurityforprogramFlash

PeripheralFeatures:

?Timer/Counters,uptofive16-bittimers

-Canpairuptomakeone32-bittimer

?InputCapture(uptofourchannels):

-Captureonup,downorbothedges

-16-bitcaptureinputfunctions

-4-deepFIFOoneachcapture

?OutputCompare(uptofourchannels):

-SingleorDual16-bitComparemode

-16-bitGlitchlessPWMmode

?4-wireSPI(uptotwomodules):

-FramingsupportsI/Ointerfacetosimplecodecs

-1-deepFIFObuffer

-Supports8-bitand16-bitdata

-Supportsallserialclockformatsandsamplingmodes

?I2C?(uptotwomodules):

-SupportsFullMulti-MasterSlavemode

-7-bitand10-bitaddressing

-Buscollisiondetectionandarbitration

-Integratedsignalconditioning

-Slaveaddressmasking

?UART(uptotwomodules):

-Interruptonaddressbitdetect

-InterruptonUARTerror

-Wake-uponStartbitfromSleepmode

-4-characterTXandRXFIFObuffers

-LINbussupport

-IrDA?encodinganddecodinginhardware

-High-SpeedBaudmode

-HardwareFlowControlwithCTSandRTS

?EnhancedCAN(ECAN?module)2.0Bactive:

-Uptoeighttransmitandupto32receivebuffers

-16receivefiltersandthreemasks

-Loopback,ListenOnlyandListenAll

-Messagesmodesfordiagnosticsandbusmonitoring

-Wake-uponCANmessage

-AutomaticprocessingofRemote

TransmissionRequests

-FIFOmodeusingDMA

-DeviceNet?addressingsupport

?QuadratureEncoderInterface(upto2modules):

-PhaseA,PhaseB,andindexpulseinput

-16-bitup/downpositioncounter

-Countdirectionstatus

-PositionMeasurement(x2andx4)mode

-Programmabledigitalnoisefiltersoninputs

-Alternate16-bitTimer/Countermode

-Interruptonpositioncounterrollover/underflow

High-SpeedPWMModuleFeatures:

?UptoninePWMgeneratorswithupto18outputs

?PrimaryandSecondarytime-base

?IndividualtimebaseanddutycycleforeachofthePWMoutput

?Deadtimeforrisingandfallingedges:

-Dutycycleresolutionof1.04ns

-Dead-timeresolutionof1.04ns

?Phaseshiftresolutionof1.04ns

?Frequencyresolutionof1.04ns

?PWMmodessupported:

-StandardEdge-Aligned

-TrueIndependentOutput

-Complementary

-Center-Aligned

-Push-Pull

-Multi-Phase

-VariablePhase

-FixedOff-Time

-CurrentReset

-Current-Limit

?IndependentFault/Current-Limitinputs

?Outputoverridecontrol

?SpecialEventTrigger

?PWMcapturefeature

?Prescalerforinputclock

?DualTriggerfromPWMTOADC

?PWMxL,PWMxHoutputpinswapping

?On-the-FlyPWMFrequency,DutycycleandPhaseShiftchanges

?DisablingofIndividualPWMgenerators

?Leading-EdgeBlanking(LEB)functionality

High-SpeedAnalogComparator:

?UptofourAnalogComparators:

-20nsresponsetime

-10-bitDACforeachanalogcomparator

-DACOUTpintoprovideDACoutput

-Programmableoutputpolarity

-Selectableinputsource

-ADCsampleandconvertcapability

?PWMmoduleinterface:

-PWMDutyCycleControl

-PWMPeriodControl

-PWMFaultDetect

InterruptController:

?5-cyclelatency

?Uptofiveexternalinterrupts

?Sevenprogrammableprioritylevels

?Fiveprocessorexceptions

High-Speed10-bitADC:

?10-bitresolution

?Upto24inputchannelsgroupedinto12conversionpairs

?Twointernalreferencemonitoringinputsgroupedintoapair

?SuccessiveApproximationRegister(SAR)convertersforparallelconversionsofanalogpairs:

-4MspsfordeviceswithtwoSARs

-2MspsfordeviceswithoneSAR

?Dedicatedresultbufferforeachanalogchannel

?Independenttriggersourcesectionforeachanaloginputconversionpairs

PowerManagement:

?On-chip2.5Vvoltageregulator

?Switchbetweenclocksourcesinrealtime

?Idle,Sleep,andDozemodeswith

CMOSFlashTechnology:

?Low-power,high-speedFlashtechnology

?Fullystaticdesign

?3.3V(±10%)operatingvoltage

?IndustrialandExtendedtemperature

?Lowpowerconsumption

SystemManagement:

?Flexibleclockoptions:

-External,crystal,resonator,internalRC

-Phase-LockedLoop(PLL)with120MHzVCO

-PrimaryCrystalOscillator(OSC)intherangeof3MHzto40MHz

-Secondaryoscillator(SOSC)

-InternalLow-PowerRC(LPRC)oscillatoratafrequencyof32.767kHz

-InternalFastRC(FRC)oscillatoratafrequencyof7.37MHz

?Power-onReset(POR)

?Brown-outReset(BOR)

?Power-upTimer(PWRT)

?OscillatorStart-upTimer(OST)

?WatchdogTimerwithitsRCoscillator

?Fail-SafeClockMonitor

?Resetbymultiplesources

?In-CircuitSerialProgramming?(ICSP?)

?ReferenceOscillatorOutput

ApplicationExamples:

?AC-to-DCConverters

?AutomotiveHID

?BatteryChargers

?DC-to-DCConverters

?DigitalLighting

?InductionCooking

?LEDBallast

?RenewablePower/PureSineWaveInverters

?UninterruptiblePowerSupply(UPS)

圖1.dsPIC33系列方框圖

圖2.dsPIC33系列DSP引擎方框圖

圖3.dsPIC33推薦的最少連接方框圖

圖4.dsPIC33系列數(shù)字PFC方框圖

圖5.dsPIC33系列升壓轉換器實現(xiàn)方框圖

圖6.dsPIC33系列單相同步轉換器方框圖

圖7.dsPIC33系列多相同步降壓轉換器方框圖

圖8.dsPIC33系列隔行掃描PFC方框圖

圖9.dsPIC33系列相移全橋轉換器方框圖

圖10.帶PFC和三輸出(12V,5V和3.3V)的AC/DC電源電路圖

Explorer16低成本高效開發(fā)板

TheExplorer16isalowcost,efficientdevelopmentboardtoevaluatethefeaturesandperformanceofMicrochip’snewPIC24Microcontroller,thedsPIC33DigitalSignalController(DSC)families,andthenew32-bitPIC32MXdevices.CoupledwiththeMPLABICD2InCircuitDebuggerorMPLABREALICE,real-timeemulationanddebugfacilitiesspeedevaluationandprototypingofapplicationcircuitry.TheExplorer16100-pinfeaturestwointerchangeablePlug-InModules(PIMs),oneeachforthePIC24FJ128GA010andthedsPIC33FJ256GP710DSC.TheExpl