diodesal1672高性能led驱动器解决方案

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1、DiodesAL1672高性能LED驱动器解决方案Diodes公司的AL1672是高性能单级降压转换器,工作在BCM模式，具有良好的EMI和效率,支持多种调光模式•器件集成了600V/4A高压MOSFET和多种保护模式如过压，短路，过流和超温等，主要用在具有调光功能的通用LED照明驱动器，通用恒流源和智能LED照明.本文介绍了AL1672主要特性，框图，降压应用电路图以及100~265VAC高PF降压LED驱动器演示板主要特性和指标，电路图和变斥器电路图，材料清单和PCB设计图.TheAL1672isahighperformanees

2、inglestageBuckconvertor,targetingdimmableLEDlightingapplication.ItisoperatingatBCMmodewhichresultsingoodEMIandefficiency.TheAL1672cansupicewilloperateinanalogdimmingmode.WhenadigitalsignalisappliedonAPWMpin,thedeviceworksatPWMdimmingmode・TheAL1672featureslowstart-upcurr

3、entandlowoperationcurrent.Itintegratesmultipleprotectionsincludingovervoltage,shortcircuit,overcurrentandovertemperatureprotection.Italsointegrates600V/4AhighvoltageMOSFET.TheAL1672isavailableinSO-8EPpackage.AL1672主要特性：-UpCurrentciency-to-DCDimmingRange:!8%to100%-BackPr

4、otection(TFP)P)-8EP-Free&FullyRoHSCompliant(Notes1&2)AL1672应用:ilircevccAPWMDRAINCOMPGND图1.AL1672框图图2.AL1672降压应用电路图100-265VAC高PF降压LED驱动器演示板ThisdemonstrationboardutilizestheAL1672BuckLEDdriverICprovidingacosteffectivePWM/AnalogdimmablesolutionforofflinehighbrightnessLEDap

5、plications・Thisuser-friendlyevaluationboardprovidesuserswithquickconnectiontotheirdifferenttypesofLEDstrings.ThedemonstrationboardcanbemodifiedtoadjusttheLEDoutputcurrentandthenumberofseriesconnectedLEDsthataredriven.ABOM,schematicandlayoutareincludedthatdescribesthepar

6、tsusedonthisdemonstrationboard,alongwithmeasuredperformaneecharacteristics.Thesematerialscanbeusedasarefereneedesign.LED驱动器演示板主要特性：-isolatedbuckLEDdriverLED驱动器演示板指标:LED驱动器演示板应用:DC-DCLEDDriverACLACN图3丄ED驱动器演示板外形图图4.LED驱动器演示板电路图7oWD1:Primary0.2mm*1,143Ts2Or06WD2:Axillary0

7、.12mm*1,42Tso3图5.LED驱动器演示板变压器电路图LED驱动器演示板材料清单：图6.LED驱动器演示板PCB设计图（顶层）图7.LED驱动器演示板PCB设计图（底层）详情请见：https://www.diodes.com/assets/Datasheets/AL1672.pdf和https://www.diodes.com/assets/Evaluation-Boards/AL1672EV1-User-Guide.pdfBali672EV1-User-Guide.pdf®AL1672.pdf