恒流驱动LED的电源设计及应用
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密 惠 保
恒流驱动LED的电源设计及应用(论文9200字)
摘 要
本论文主要介绍的是恒流驱动发光二极管（LED）的电源设计及应用。在现代，随着LED行业的持续发展，亮度化和多色化的实现,电光转化效率高、绿色环保、寿命长的LED已经得到了广泛应用。而传统的白炽灯由于其电光转化效率低、寿命短也已经很难再满足不断增长照明需求。因此，安全、环保、寿命长、低功耗的LED渐渐地取代了传统白炽灯的地位，成为民用照明的主体。
然而发光二极管是一种在工作时对电路变化反应明显的照明器件，对温度、电压和电流的变化均有响应。因此，LED在使用时需要搭配驱动电源以维持正常工作环境，否则会大大减少灯管寿命。本文内容将本着对LED驱动电源的入门学习为目的，从最基本的原理出发，介绍电源驱动原理，选择一款比较合适的LED恒流驱动芯片设计整体驱动电源电路。最后，制作出相应成品并测试其实际性能。
关键词：发光二极管、LED、恒流驱动、驱动电源
ABSTRACT
This paper mainly introduces the power supply design and application of constant current driving light-emitting diode (LED). In modern times, with the continuous development of the LED industry, the realization of brightness and multi-color, LED with high electro-optical conversion efficiency, green environmental protection and long life have been widely used. Traditional incandescent lamps have been difficult to meet the growing demand for lighting due to their low efficiency in electro-optical conversion and short life. Therefore, LED with safety, environmental protection, long life and low power consumption have gradually replaced the status of traditional incandescent lamps and become the main body of civil lighting.
However, a light-emitting diode is an illumination device that reacts significantly to circuit changes during operation, responding to changes in temperature, voltage, and current. Therefore, the LED needs to be matched with the driving power source to maintain the normal working environment, otherwise the lamp life will be greatly reduced. The content of this article will be based on the introduction of LED driver power, starting from the most basic principles, introduce the power drive principle, choose a suitable LED constant current drive chip design overall drive power circuit. Finally, the corresponding finished product is produced and tested for actual performance.
KETWRODS: Light-emitting diode；LED；Constant current supply；Power supply
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目录
摘要 I
Abstract I
第一章 绪论 1
1.1 LED的介绍及现状 1
1.2 LED电源驱动发展趋势 1
1.3 LED驱动电源设计要素 2
1.4 本文的研究内容 3
第二章 LED电源驱动相关原理介绍 4
2.1 LED的工作特性 4
2.2 LED电源驱动的种类 5
2.3 LED恒流驱动控制芯片 6
第三章 LED恒流驱动的电路模型设计 10
3.1驱动电路设计框架 10
3.2 BP2822的工作原理 10
3.3 电路整体设计 13
3.4 电路具体参数计算 14
第四章 成品制作与参数测试 19
4.1 成品制作 19
4.2实物性能测试与结论 20
第五章 全文总结和未来展望 23
5.1全文总结 23
5.2未来展望 23
参考文献 25
致谢 26 [版权所有：http://think58.com]