数字可寻址DALI调光镇流器

Thisreferencedesignisahighefficiency,highpower

factoranddigitaldimmingelectronicballastdesignedto

driverapidstartfluorescentlamptypes.Thedesign

containsanactivepowerfactorcorrectioncircuitfor

universalvoltageinputaswellasaballastcontrolcir-

cuitusingtheIR2159.Thedesignalsoincludesa

PIC16F628microcontrollerandanisolationcircuitfor

connectingtoaDigitallyAddressableLightingInterface

(DALI).OtherfeaturesincludeEMIfiltering,transient

protectionandlampFAULTprotection.AN809DigitallyAddressableDALIDimmingBallastFIGURE1:DALIDIMMINGBALLASTAuthors:RossFoslerMicrochipTechnologyIncorporatedCeciliaContentiInternationalRectifierTomRibarichInternationalRectifierINTRODUCTIONThisreferencedesignisahighefficiency,highpowerfactoranddigitaldimmingelectronicballastdesignedtodriverapidstartfluorescentlamptypes.Thedesigncontainsanactivepowerfactorcorrectioncircuitforuniversalvoltageinputaswellasaballastcontrolcir-cuitusingtheIR2159.Thedesignalso