C2000产品系列简介.pptx
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C2000产品系列简介.pptx
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C2000Evolution,Theformulawassimple:
takeaproven,well-establishedDSPcore,addnon-volatileflashmemory,anA-to-Dconverter,andaprogrammablePWMgenerator.Theresult:
ahighlyintegrated,costeffectivesolutionfordigitalmotorcontrol.Inthisoriginalarchitecturalblockdiagram,weseeallthesefeatures,togetherwithintegratedserialcommunicationsportsandawatchdogtimer.Thisoriginalideahasstoodthetestoftimewell.Today,theC2000familyconsistsofdozensparts,allofwhicharevariationsonthissametheme.LetsexaminethekeyeventsinthedevelopmentoftheC2000platform,andthefactorswhichinfluencedthem.,TMS320F240Architecture,16kWofsectoredFlashmemoryforfieldre-programmabilityandsimplifieddesign12PWMoutputsallowmulti-motor/axiscontrol6.1-usA/Dconverterenhancessystemaccuracy50nsinstructioncycle(20MIPS)forprocessingcomplexmotor-controlalgorithms544WordsofRAMforhigh-levelprogramminglanguageandhigh-ordersystemmodelizationCodecompatibleplatformprovideseasymigrationpath28configurableI/Opins,16x16multiply32-bitPregisterShiftL(0,1,4,-6)32-bitALU,16-bitbarrelshifter(L),32-bitaccumulatorShiftL(0-7)8auxiliaryregisters8-levelhardwarestackRepeatcount2statusregisters,Program/Data/I/OBuses,ProgramFlash16Kwords,DualA/DConverter10bits,16channels,SPI,SCI,C2xxDSPCore16-bitTregister,DataRAM544words,PeripheralBus,WDTimer,EventManager3timers12compares12PWMoutputsDeadbandlogic4inputcapturesQEPchannel,EMIF,2,Thiswasfollowedbyaseriesofthreeother5VoltpartstheflashbasedF243andF241,andtheROMbasedC242.TheredevicesfeaturedmodifiedperipheralsandaCANcommunicationsport.TheLF240xserieswasreleasedin2000.Thesepartsuseda3.3Volttechnologyenablingcorespeedsupto30MHz,whileasecondseries.theLF240xA-increasedtheCPUclockspeedto40MHzandintroducedacodesecuritymoduleallowinguserstopasswordprotectthecontentsofinternalflashmemory.,C24xPlatformRoadmap,SoftwareCompatible,ControlPerformance,LF2402,LF2406,LF2407,F240,C242,F241,F243,LC2406A,LF2406A,LF2407A,LC2404A,LF2403A,LF2402ALC2402ALF2401A,4,ItwasfollowedshortlyafterwardsbytheF280xseries,whichintroducedahighlyflexiblePWMpatterngenerator.AfurtherrefinementwastheadditionofhighresolutionPWMallowingedgecontrolto150psprecision,andmaintainingPWMresolutionatveryhighswitchingfrequencies.Thisfeaturealloweddigitalcontroltobebroughttotheworldofswitchingpowersupplies.SincethenthedevelopmentoftheC2000platformhasproceededinthreedistinctdirections.Thefirstisrepresentedbythe“Delfino”familyofparts,whichextendtheperformanceandfeaturesoftheoriginalC28xparts.Theseareavailableatspeedsupto300MHz,andarecommonlyusedinindustrialdrivesandautomotiveradarapplications.Thesecondisthehighlyintegrated“Piccolo”platform,whichincludessystemsupportfeaturessuchaspowerfaildetectionanddualinternaloscillators.Thesetypicallyfindapplicationincostandperformancesensitivedesigns,suchasservomotorcontrol,andswitchedmodepowersupplies.Finally,the“Concerto”platformcombinesDSP-likecontrolperformancewiththeversatilityofaARMmicro-controller.Thisplatformistypicallyusedindemandingapplicationswhichrequirebothtypesofdevice,suchashigh-endservodrivesandwindturbinecontrol.ThroughoutthedevelopmentoftheC2000platform,softwarecompatibilityandsimplemigrationbetweendeviceshasbeenofparamountimportance.Forexample,codewrittenfortheveryfirstF240device,willstillcompile,andrunonthemostrecentC28x.,C28xPlatformRoadmap,F2803x60MIPSFlashVreg/Comp/OscCLA,F2802x40/60MIPSFlashVreg/Comp/Osc,F2806x80MFLOPSFPUVCU,CLADMA,Piccolo,F2802x,F2803x,F2806x,F2805x60MIPSCLAOp-amps,F2805x,F28M35x150/75or100/100M3+C28xCLA,VCU,FPUENET,USB,F28M35x,Concerto,F28M36x,F28M36x150/75or100/100M3+C28xCLA,VCU,FPUENET,USB,F2833x150MFLOPSFlashFPUDMA,C2834x300MFLOPSROMFPUDMA,F2833x,C2834x,Delfino,F280x60-100MIPSFlashePWM,F281x,F281x150MIPSFlash,F280x,5,Agooddigitalcontrolprocessorrequiresthreekeyfeatures:
afastandaccurateanalogue-to-digitalconverter,ahighperformancecore,andafreerunningPWMgeneratorcapableofdeliveringpreciseandflexiblePWMpatterns.TheC2000platformcombinesallthreefeaturesinawaywhichisscalableacrossdevicefamilies.Flexiblecontroloftheloopisenabledbysoftwarecomputationofthecontrollaw.Thisallows,forexample,acommoncontrolboardtobeusedacrossarangeofdriveorpowersupplydesignssimplybychangingthefirmware.Theperformanceofthecoreisofparamountimportanceinapplicationswhichrequirecontrolofmorethanoneloop.Forexample,amotorcontrolsystemmayalsoneedtointegratepowerfactorcorrectioncontrolledbythesameprocessor.Insuchacase,theperformanceofthemaylimitthenumberofloopsorsystemswhichcanbesimultaneouslycontrolled.Ingeneral,thehighertheCPUperformance,themoreloopsitiscapableofcontrolling.Ingeneral,thehardwaredesignofthedevicehasbeenstronglyinfluencedbycustomerfeedback.Amongthefeatureswhichhavebeenaddedarehardwarefaultdetection,PWMtrip,dead-bandenhancements,PWMchoppermode,andmanyothers.Theresultisahighlysophisticatedprocessorplatform,optimisedforthedigitalcontrolofswitchedpowersystems.Letsnowlookateachofthesethreerequirementsinturn,withparticularfocusontheirdevelopmentovertime.,DigitalPowerControl,ClassicalcontrolarchitectureScalableacrossdevicefamiliesFlexiblecontrolviaSWcomputationMIPSvs#LOOPStrade-offHWassistanceviafeaturerichperipherals,6,OntheleftofthisslideweseetheinternalstructureofonePWMmodule.Eachmoduleconsistsofsevenprogrammablesub-modules.Time-baseandcountercomparemodulesconfigurethebasicPWMfrequencyandswitchingthresholds,whiletheactionqualifiermoduleassignsPWMedgestoeachcomparatorevent.Programmablerisingandfallingedgedead-bandmaybeaddedtotheresultingPWMwaveform.Finallythetripzonesub-moduledeterminesPWMactionintheeventofafaultcondition.Inthisway,thePWMmoduledeliverstwo,highlyflexiblePMWoutputsfromasingletime-base.Severalsuchmodulesmaybesynchronisedsuchthattheirunderlyingtime-basesmaybesharedoroffsetagainstoneanother,allowingmultiplephaseshiftedPWMpatternstobeconstructed.Inthetimingdiagramontheright,weseeatypicalwaveformforaphaseshiftedfullbridgepowerconverter.ThistopologyusesthephaseshiftbetweentwocomplementarypairPWMwaveformsastheprimarycontrolledvariable.Modulationofdead-bandissometimesusedtomaintaintheconverterinanefficient“zerovoltageswitched”mode.HardwareinterruptsandtriggersfortheA-to-Dconverterarealsogeneratedautomaticallybytheeventtriggersub-moduleasshown.,ModernPWMArchitecture,ModernPWMarchitectureenablessimultaneouscontrolofdutycycle,frequencyandphaseshift.MultiplePWMchannelsmaybesynchronisedtoacommontime-base.Edgeresolutioniscriticalathighswitchingfrequencies.,10,Theprincipaldifferenceslieinthreeareas:
Firstlyinthecomplexityandflexibilityoftheseperipheralsonthenewerdevice,SecondlyintheperformanceoftheCPUcore,andfinallyintheintegrationofsystemlevelfunctionssuchasfaultdetection,oscillators,andanaloguecomparators.FuturedevelopmenttrendsoftheC28xwillleadtofurtherimprovementsinallthreeareas.,ComparisonofFeatures,TMS320F240,F28069,16x16multiply32-bitPregisterShiftL(0,1,4,-6)32-bitALU,16-bitbarrelshifter(L),32-bitaccumulatorShiftL(0-7)8auxiliaryregisters8-levelhardwarestackRepeatcount2statusregisters,Program/Data/I/OBuses,ProgramFlash16Kwords,DualA/DConverter10bits,16channels,SPI,SCI,C2xxDSPCore16-bitTregister,DataRAM544words,PeripheralBus,WDTimer,EventManager3timers12compares12PWMoutputsDeadbandlogic4inputcapturesQEPchannel,EMIF,11,Wehopethisshortpresentationhasbeenofusetoyou.Thankyouforwatching.,C2000Evolution,1250ns,ChannelsResolutionPhasecontrol,12150psP,16150psP,18150psP,SupportIntegratedclocksPOR/BOR,12,PP,PP,
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