基于AMC7140芯片的大功率LED多路驱动电源设计  

The Design of the High-power LED Multiple Driving Power Based on the AMC7140

作　　者：吴运铨[1] 吴金华[1] 刘银春[1] 

机构地区：[1]福建农林大学机电工程学院,福建福州350002

出　　处：《照明工程学报》2013年第5期90-93,共4页China Illuminating Engineering Journal

基　　金：福建省高校产学合作重大科技项目(项目编号:2012N5002)

摘　　要：针对昆虫趋光性实验仪的需要,设计一款基于AMC7140芯片的大功率LED多路驱动电源。该电源具有模拟调光、同时驱动多路大功率LED的功能、电路结构简单,成本较低等优点。实验结果表明:该电源的输出电流精度小于1.5%、输出效率高于90%,且同时驱动多路大功率LED时,电流精度和输出效率保持稳定,能够满足研究昆虫趋光特性及植物特征光谱的需要。Abstract ： According to the needs of the insect phototropism instrument, muhiple High-power LED driving power based on AMC7140 was designed. The function of simulation dimming and multiple High-power LED driving power and the structure is simple and the cost is lost were realized in this power. The experimental show the result that the current precision was less than 1.5% , output efficiency was more than 90% , and remain unchanged when drive different wavelength high-power LED at the same times. Satisfy the needs of insects phototaxis characteristics and plant characteristic spectrum research.

关 键 词：PWM调光 AMC7140 大功率LED 多路驱动 

分 类 号：TM923.34[电气工程—电力电子与电力传动]