汽车前照灯“一芯多拓”的驱动之道.pdf

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1、汽车前照灯“一芯多拓”的驱动之道汽车前照灯“一芯多拓”的驱动之道股票代码股票代码：6883812目目录录CONTENTSCONTENTS汽车前照灯驱动的特性汽车前照灯驱动的特性1 1如何实现“一芯多拓”如何实现“一芯多拓”2 2帝奥微车灯产品介绍帝奥微车灯产品介绍3 33汽车前照灯架构汽车前照灯架构远光灯近光灯日行灯MCUSBCConstant CurrentBuckBoost CVDIA82901Matrix ManagerStepperMotor Driver头灯位置调节/光束整形HSDDIA74H120风扇NTCConstant CurrentBuckConstant CurrentBu

2、ckAmpDIA2602ComparatorDIA20903转向灯位置灯角灯CANVBAT灯板灯板M控制板控制板方案方案1 1CANLDODIA7865HSDDIA74H120LDODIA7865VBAT在研中已量产 or 有样片远光灯/近光灯MCULDODIA7865StepperMotor Driver头灯位置调节/光束整形HSDDIA74H120风扇Constant CurrentBuck-BoostDIA89360Constant CurrentSepicDIA82901AmpDIA2602ComparatorDIA20903日行/位置灯CANVBATM控制板控制板方案方案2 2Con

3、stant CurrentBoost to batteryDIA82901转向灯VBAT多拓扑多拓扑BoostBoost，buckbuck，boost to batteryboost to battery，SepicSepic多模式输出多模式输出恒压恒压/CV/CV恒流恒流/CC/CC4Topology Controller Topology Controller GNDGNDVINVINVOUTVOUTVINVINGNDGNDVOUTVOUTVINVINVOUTVOUTGNDGNDVOUTVOUTVINVINVINVINVOUTVOUTVINVINVOUTVOUT5Topology Cont

4、roller Topology Controller Boost Boost VINVINVOUTVOUTBoost Boost ControllerControllerDIA82901DIA82901CVIN VCCVCCRSET1 RSET2 VINVINFPWM/FAULTFPWM/FAULTEN/PWMIEN/PWMISETSETCOMPCOMPFREQ/SYNCFREQ/SYNCGNDGNDPWMOPWMOVCCVCCFBLFBLFBHFBHOVPOVPCSCSDRVDRVCCOMP RCOMP RFREQ TSW LBO DBO CBO RCS ROVH ROVL VCCCVCCR

5、POL DPOL DFAULT RFAULT FAULT CFAULT TDIM1 RDIM1 RFB RDIM2 TDIM2D1 D2 D3 D11 D12 DZ DIA82901DIA82901CFPWM Digital DimmingVIN6VINVINVOUTVOUTTopology Controller Topology Controller BuckBuck-boostboostVOUTVOUTVINVINVINVINVOUTVOUTBoost to Boost to battery battery ControllerControllerDIA82901DIA82901Sepic

6、 Sepic ControllerControllerDIA82901DIA829017Topology Controller Topology Controller BuckBuck-boostboostCVIN VCCRSET1 RSET2 VINVINFPWMFPWM /FAULT/FAULTEN/PWMIEN/PWMISETSETCOMPCOMPFREQ/SYNCFREQ/SYNCGNDGNDPWMOPWMOVCCVCCFBLFBLFBHFBHOVPOVPCSCSDRVDRVCCOMP RCOMP RFREQ DIA82901DIA82901TSW LB1 DBO CBO RCS RO