›› 2011, Vol. 24 ›› Issue (9): 42-.

• 论文 • 上一篇    下一篇

白光LED驱动电路的设计与实现

齐家,邓周虎,侯明月,齐文涛   

  1. (西北大学 信息科学与技术学院,陕西 西安 710127)
  • 出版日期:2011-09-15 发布日期:2011-10-24
  • 作者简介:齐家(1988—),男,本科。研究方向:电子电路设计。
  • 基金资助:

    国家大学生创新性实验计划项目基金(091069722)

Design and Implementation of White-light LED Driving Circuit

 JI Jia, DENG Zhou-Hu, HOU Ming-Yue, QI Wen-Tao   

  1. (School of Information Science and Technology,Northwest University,Xi'an 710127,China)
  • Online:2011-09-15 Published:2011-10-24

摘要:

通过对LED电气特性分析,根据其工作特点设计了一种以HV9910B为核心的市电供电PWM工作模式高效白光LED驱动电路。通过理论计算和实验测量,确定了电路的工作频率,测试结果表明,该驱动电路工作电压范围宽、恒流输出,转换效率超过85%。

关键词: LED, 恒流驱动, 开关电源

Abstract:

Through the analysis of the electrical characteristics of LED and its work characteristics,a high power efficiency PWM mode white LED driver circuit based on the HV9910B chip is designed,and the operating frequency of the circuit is determined through theoretical calculations and experimental measurements.Test results show that the driver circuit has a wide operating voltage range,constant current output,and a conversion efficiency of over 85%.

Key words: LED;constant-current driver;switching power supply

中图分类号: 

  • TN432