| 高刷新率高稳定性LED恒流驱动电路的设计 |
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| 引用本文： | 黎官华,王卫东.高刷新率高稳定性LED恒流驱动电路的设计[J].电子器件,2015,38(3):531-537. |
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| 作者姓名： | 黎官华 王卫东 |
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| 作者单位： | 桂林电子科技大学信息与通信学院,广西 桂林,541004 |
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| 摘 要： | 为了提升LED显示屏的画面质量，设计了一款高刷新率高稳定性LED恒流驱动电路。将一个完整的PWM划分为32段，通过改进M序列设计了一个新颖的计数器，产生了不规则的PWM提高了视觉刷新率。同时改进带隙基准源和采用高输出阻抗电流镜，提高了电流的稳定性。
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| 关 键 词： | 高刷新率 高稳定性 带隙基准源 电流镜 |
Design of high refresh rate and high precision LED constant current drive circuit |
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| LI Guanhua
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WANG Weidong?.Design of high refresh rate and high precision LED constant current drive circuit[J].Journal of Electron Devices,2015,38(3):531-537. |
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| Authors: | LI Guanhua WANG Weidong? |
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| Affiliation: | LI Guanhua;WANG Weidong;School of Information and Communication Engineering,Guilin University of Electronic Technology; |
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| Abstract: | In order to improve the quality of image of LED display, a high refresh rate and high stability LED constant current drive circuit was designed. A complete PWM is divided into 32 sections. A novel counter is designed by modified the M-serial to produce irregular PWM, improves visual refresh rate. At the same time, improve the band gap reference source and using high output impedance current mirror to improve the stability of current |
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| Keywords: | high refresh high stability band gap reference source current mirror |
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