摘要
在绿色照明领域,既要体现节能,又要具备较高的光效,大功率LED驱动设计显得越来越重要。针对大功率LED的特性,研究设计了适用于不同参数指标的白光LED的驱动与控制系统。该系统以单片机C8051F040为核心,结合外围电路,用数字控制技术代替模拟电路控制,对大功率LED的恒流驱动电流进行高精度控制,以及对LED亮度进行自动调节控制,实现了多种大功率LED智能化照明。
In the area of green lighting, energy saving and high luminous efficiency performances are required; therefore, designing a high power LED driver becomes more and more important. A design method for white light source LED driver and control system with different parameter index is introduced in connection with the characteristics of high power LED. The control module uses microcontroll C8051F040 as the core, in combination with the peripheral circuits, replacing analog circuit controller with digital control technology, performing high accuracy control of LED driver current and brightness auto-regulation.
出处
《单片机与嵌入式系统应用》
2010年第1期50-52,56,共4页
Microcontrollers & Embedded Systems
