毕业设计1本科毕业论文(设计)论文题目:LED驱动电源的设计学生姓名:所在院系:机电学院所学专业:应用电子技术教育指导老师:完成时间:毕业设计I摘要对于一般照明而言,人们更需要白色的光源。作为一种新型的光源,LED具有无污染、长寿命、耐震动和抗冲击的鲜明特点。虽然白光LED的发光效率正在逐步提高,但是与LED灯配套的驱动器性能不佳,故障率高,成了LED推广应用的瓶颈。本文介绍了一种照明用LED高效驱动电源的设计方法。本设计的红、绿、蓝三色各自采用单独的驱动电路,通过脉宽调制方式来调节LED灯的亮度,便于实现颜色的多样化;采用开关电源供电方式,输入电压范围广、抗干扰性好、驱动效率高,保证了该驱动板在不同场合、不同区域内都能正常使用。关键词:LED,电源,enerallighting,,LEDwithpollution-free,long-life,,theluminousefficiencywhiteLEDisgraduallyimproving,mercializationofthedevicehasreachedtheleveloftheincandescentlamp,butthefactshouldnotbeoverlookedthattheLEDlightsandsupportingthedriverdidnotkeepupwithatimelymanner,thedrivecircuitpoorperformance,ethebottleneck,,greenandbluecolourofthedesignuseseparatedrivecircuitrespectively,throughthePWMmodetoadjustthebrightnessLEDlightstofacilitaterealizationofthediversityofcolorsusedtoswitchpowersupply,inputvoltagerangewidely,anti-Interferenceofthegood,high-asionsindifferentregions,:LED,Power,Driver毕业设计III目录1绪论........................................................................................................................................................................................................................................................................................................................12系统硬件电路设计......................................................................................................................................................................................................................................................................................................................................................................................................................
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