| 基于反激式LED驱动芯片的可控硅调光设计 |
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| 引用本文： | 李晓庆,彭晓宏,侯立刚,郭越勇,刘柳胜.基于反激式LED驱动芯片的可控硅调光设计[J].电子技术应用,2011,37(9):77-79,83. |
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| 作者姓名： | 李晓庆 彭晓宏 侯立刚 郭越勇 刘柳胜 |
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| 作者单位： | 1. 北京工业大学集成电路与系统集成实验室,北京,100022
2. 美芯晟科技(北京)有限公司,北京,100086 |
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| 摘 要： | 分析了LED驱动电源设计中的可控硅调光.设计能兼容现行大多数调光器的LED电源是降低LED成本、迅速取代当前节能照明技术的关键.系统地分析了三端双向可控硅的工作原理和LED驱动电路调光的难点,提出了加入damping电阻解决可控硅调光与LED兼容问题的方案.该设计基于AC-DC电源芯片MT7920,并加入了一种相位补偿...
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| 关 键 词： | LED驱动 可控硅调光 相位补偿 动态damping电路 |
Design of TRIAC dimming based on the flyback LED driver |
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| Li Xiaoqing,Peng Xiaohong,Hou ligang,Guo Yueyong,Liu Liusheng.Design of TRIAC dimming based on the flyback LED driver[J].Application of Electronic Technique,2011,37(9):77-79,83. |
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| Authors: | Li Xiaoqing Peng Xiaohong Hou ligang Guo Yueyong Liu Liusheng |
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| Abstract: | This paper introduced the TRIAC dimming research in LED driver design.Design the LED driver that can be compatible of the TRIAC,is crucial for the cost down and replace current energy saving technology.This paper analyzed the TRIAC work theory,difficult of the LED drvier dimming,proposed a solution for TRIAC dimming used the damping resistor,based on power management chip MT7920,proposed a circuit of phase compensation,after the implementation on PCB,can be dimming for TRIAC. |
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| Keywords: | LED driver TRIAC dimming phase compensation dynamic damping resistor |
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