毕业设计（论文）--市电供电高亮度led驱动电路设计.doc

扬 州 大 学 毕 业 设 计（论 文） 市电供电高亮度LED驱动电路设计 学 号: ***** 姓 名: **** 专 业:*** 指导老师: *** 二零一四年六月四号扬州大学本科毕业设计（论文） 第I页 摘 要 随着大功率在中的普遍使用，功率驱动显得越来越重要。在发展的今天，驱动电路也跟进，多种驱动并存，不同的设计方案在完善。在照明领域，没有好的驱动器匹配，照明的优将无法体现。大功率是电流型器件，严格的控制其流过电流的恒定显得尤为重要。然而，选择大功率的驱动方案，还要根据的电气特性考虑到诸多对电路有影响的因素。 本对的驱动方式进行了探讨，设计了一个。对的功能及其工作原理进行研究与分析NXP公司的SSL2103驱动控制器的LED驱动的实际电路。在对SSL2103的特点、控制功能、组成的LED驱动电路的主要技术特点以及电路的工作原理进行分析后所设计的驱动电路能保证。Abstract With the widespread use of high power LED lighting, lighting and display, high power LED drive becomes more and more important. In LED rapid development today, the LED driving circuit also requires developers to fast track, many driving coexisted means, different design also is in perfect. In the field of LED lighting, no good driver with matching, advantages of LED lighting will not be reflected. High power LED is a current mode device, a constant current flows through the strict control of the important. However, selection of driving scheme for high power LED, according to the electrical characteristics of LED considering many influential factors of circuit. The design of the LED phase control dimming driving mode are discussed,designed by using a time and frequency control LED brightness control. LED lighting function on the function and work principle of the design of research and analysis, a comprehensive introduction and analysis of the situation and characteristics of the application of LED as a light source in the field of road lighting. Introduces the design of the driving circuit of LED related know LED ge,and switching power supply in the system, and gives the actual circuit drive controller NXP based SSL2103 LED driver. The main technical characteristics in the characteristics of driving controller, the control function of SSL2103,composed of LED drive circuit and electric circuit principle of work analysis, to determine the driving circuit designed can ensure the brightness change of LED