低成本三基色大功率LED驱动控制方案设计  

Low-cost driver design for high-power tricolor LED

作　　者：张修红[1] 刘廷章[1] 闫斌[1] 金碧瑶[1] 周壮丽 

机构地区：[1]上海大学机电工程与自动化学院,上海200072 [2]上海亮硕光电子科技有限公司,上海201203

出　　处：《电子设计工程》2015年第14期89-92,共4页Electronic Design Engineering

基　　金：国家科技部国家科技支撑计划课题(2011BAE34B01);上海市科委战略性新兴产业引导专项课题(12DZ1143700)

摘　　要：针对三基色LED(Light Emitting Diode)驱动成本高、电路设计复杂的问题,设计了一款用于三基色大功率LED驱动控制方案。设计并制作电路驱动LED模型装置,通过单片机产生三路PWM(Pulse Width Modulation)波来控制MOSFET,从而分别控制三路LED,这样只需要一个DC/DC(Direct Current/Direct Current)驱动器,就能实现三路LED的调节,而且通过特定算法将上位机传送的标准Yxz值(遵循标准ZLL,Zig Bee Light Link协议[1])转化为RGB(Red Green Blue)值。根据实验测得,三路LED调节反应迅速,显色效果优秀。Aiming at the problems about high cost LED drive and complex circuit design, the paper proposes a high-power LED driver for tricolor control scheme. Designing and constructing the circuit for LED, in addition, which controls MOSFETs by three PWM waves generated by the microcontroUer to short-circuit tricolor LED respectively, therefore only one DC/DC drive is needed to achieve three-way adjustment, and Yxz （following the standard protocol of ZLL, ZigBee Light Link） is converted to RGB values through a specific algorithm. According to the experiment, the device adjusts quickly and has great color show.

关 键 词：大功率LED 驱动电源 PWM调光 控制 

分 类 号：TN86[电子电信—信息与通信工程]