LED驱动电源的设计
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密 惠 保
摘 要
对于一般照明而言，人们更需要白色的光源。作为一种新型的光源， LED具有无污染、长寿命、耐震动和抗冲击的鲜明特点。虽然白光LED的发光效率正在逐步提高，但是与LED灯配套的驱动器性能不佳，故障率高，成了LED推广应用的瓶颈。
本文介绍了一种照明用LED高效驱动电源的设计方法。本设计的红、绿、蓝三色各自采用单独的驱动电路，通过脉宽调制方式来调节LED灯的亮度，便于实现颜色的多样化；采用开关电源供电方式，输入电压范围广、抗干扰性好、驱动效率高，保证了该驱动板在不同场合、不同区域内都能正常使用。
[资料来源：THINK58.com]
关键词：LED，电源，驱动
[资料来源：www.THINK58.com]
[资料来源：http://www.THINK58.com]
[资料来源：http://THINK58.com]
[来源：http://www.think58.com]
[来源：http://www.think58.com]
[来源：http://think58.com]
[来源：http://www.think58.com]
[来源：http://think58.com]
[资料来源：www.THINK58.com]
The design of LED drives power
ABSTRACT
For general lighting, people need more white light sources. As a new light source, LED with pollution-free, long-life, vibration and shock resistant to the distinct characteristics. At present, the luminous efficiency white LED is gradually improving, the commercialization of the device has reached the level of the incandescent lamp, but the fact should not be overlooked that the LED lights and supporting the driver did not keep up with a timely manner, the drive circuit poor performance, fault Rate is high and promote the use of LED become the bottleneck, there are many technical issues need to study and solve.
This paper introduces a highly efficient lighting with LED drive the power. Red, green and blue colour of the design use separate drive circuit respectively, through the PWM mode to adjust the brightness LED lights to facilitate realization of the diversity of colors used to switch power supply, input voltage range widely, anti - Interference of the good, high-efficiency drive to ensure that the drive plate on different occasions in different regions, is normally available.
KeyWords： LED，Power ，Driver
[资料来源：http://www.THINK58.com]
[来源：http://think58.com]