dsPICDEM™MC1L三相低压功率模块用户指南

ThedsPICDEMMC1L3-PhaseLowVoltagePowerModuleisintendedtoaidtheuser

intherapidevaluationanddevelopmentofawidevarietyoflowvoltageDCmotor

controlapplicationsusingthedsPIC

®

microcontroller.Thedesignofthesystem

includesseveralMicrochipanalogcomponents,aswellasaPIC

®

microcontroller

usedtoprovideisolatedvoltagefeedback.Themaincomponentsofthesystemare

showninFigure1-1.

Theunitiscapableofoperatingfromanyvoltageuptoamaximumof48V(average)

and58V(peak).Itisthereforesuitableforuseonaverywiderangeofapplications.

Theseincludeconventionalcommercialandindustrialapplicationsrunningoffupto

48VDCsupplies,aswellasautomotiveapplicationsincludingthenew42Vbus

standard.ProtectionisprovidedforaccidentalreverseconnectionoftheDCinput,as

wellasformotorandwiringshortcircuits.

Thecontinuousratedinputcurrentis15A(RMS).Thecontinuousratedoutputcurrent

fromtheinverterisalso15A(RMS).Thisresultsinthemaximumoutputpowerbeing

linearlyrelatedtotheinputvoltage.Approximately400VA/300Woutputmaybe

achievedwhenrunningfroma24DCinputvoltageuptoa30°C(85F)ambient.Thus,

thesystemisideallysuitedtorunningquitelarge3-phasebrushlessDCmotorsor

specialistinductionmachineswoundforoperationatlowvoltage.Thepowermodule

iscapableofdrivingothertypesofmotorsandelectricalloadsthatdonotexceedthe

maximumpowerlimitandarepredominantlyinductive.Furthermore,single-phase

loadscanbedrivenusing1or2oftheinverteroutputs.dsPICDEMMC1L3-PhaseLowVoltagePowerModuleUser’sGuide2003MicrochipTechnologyInc.DS70097ANotethefollowingdetailsofthecodeprotectionfeatureonMicrochipdevices:MicrochipproductsmeetthespecificationcontainedintheirparticularMicrochipDataSheet.Microchipbelievesthatitsfamilyofproductsisoneofthemostsecurefamiliesofitskindonthemarkettoday,whenusedintheintendedmannerandundernormalconditions.Therearedishonestandpossiblyillegalmethodsusedtobreachthecodeprotectionfeature.Allofthesemethods,toourknowledge,requireusing