摘要
介绍了在采用LED做光源的投影仪中,如何设计LED光源的驱动电路。分析了负压型Buck电路的设计及PWM调光电路、短路保护、过压保护、环路测试等问题。
In this paper, the design of LED driver in projector is introduced. The topology of negative Buck converter, PWM dimming circuit, short circuit protection, over voltage protection and control loop test has been analyzed.
出处
《电子技术应用》
北大核心
2011年第8期72-74,共3页
Application of Electronic Technique
关键词
负压Buck变换器
LED驱动
PWM调光
短路保护
过压保护
环路测试
negative voltage Buck converter
LED driver
PWM dimming
short circuit protection
over vohage protection
testof control loop