| 投影仪的LED光源驱动器的设计 |
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| 引用本文： | 顾巍,张龙.投影仪的LED光源驱动器的设计[J].电子技术应用,2011,37(8):72-74. |
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| 作者姓名： | 顾巍 张龙 |
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| 作者单位： | 万代半导体元件(上海)有限公司,上海,200070 |
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| 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.
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| 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 |
Design of LED driver used in projector |
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| Gu Wei,Zhang Long.Design of LED driver used in projector[J].Application of Electronic Technique,2011,37(8):72-74. |
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| Authors: | Gu Wei Zhang Long |
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| Abstract: | 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. |
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| Keywords: | negative voltage Buck converter LED driver PWM dimming short circuit protection over voltage protection test of control loop |
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