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一种基于boose-buck拓扑的LED驱动电路
引用本文:姚帅,余桂英.一种基于boose-buck拓扑的LED驱动电路[J].照明工程学报,2009,20(3):24-27.
作者姓名:姚帅  余桂英
作者单位:中国计量学院计量测试工程学院,浙江,杭州,310018
基金项目:浙江省科技计划项目:LED汽车前照灯的研制 
摘    要:采用AT9930芯片,设计了一款车载LED驱动电路,其驱动、拓扑、调光方式分别采用更具优势的开关型变换器、boost-buck(升降压型)拓扑和PWM(脉宽调制)方式。实验证明,该驱动电路具有输入电压范围宽,恒流精度高,可靠性高、EMI(电磁干扰)低等特点。

关 键 词:AT9930  升降压拓扑  开关型变换器  脉宽调制

LED Driver Based on Boose-buck Topology
Yao Shuai,Yu Guiying.LED Driver Based on Boose-buck Topology[J].China Illuminating Engineering Journal,2009,20(3):24-27.
Authors:Yao Shuai  Yu Guiying
Affiliation:( College of Measurement and Testing of China Measurement University, Hangzhou 310018)
Abstract:A LED driver used in automobile application was proposed, basted on AT9930. Switching converter, boost- buck topology and pulse width modulation (PWM) dimming, the performance of which was excellent, were chosen. The experiment result shows that the driver has advantages of wide input voltage range, high accuracy constant output current, high reliability and low EMI.
Keywords:AT9930
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