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照相手机的LED闪光灯驱动电路设计的改进

更新时间:2020-08-04 04:27:19 大小:246K 上传用户:六3无线电查看TA发布的资源 标签:LED闪光灯驱动电路 下载积分:5分 评价赚积分 (如何评价?) 收藏 评论(0) 举报

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为了获得优良的画质和更高的分辨率,需要更亮的闪光灯LED解决方案,如何通过实现最高效率的解决方案来从电池中挤压出最佳的光通量。从电池吸收大电流的运行,要求具备许多省电运行特性以及一种稳健的系统设计。介绍一种系统先进的闪光灯LED驱动器,设计的电流模式DC—DC转换器工作于DCM模式下,这样可以保证在不大的负载电流下有较高效率且不需要斜坡补偿电路;采用双电流反馈环控制,测试结果证明驱动设计安全可靠,对手机照相提高画质有一定的帮助。

In order to get good quality and higher resolution, need the flash LED brighter solutions. So how to achieve the highest efficiency solutions from the battery to squeeze the best flux is a problem needed solve. Absorption of large current operation from the battery requires many power-saving operation characteristics and a robust system need he designed. This paper will introduce a system of flash LED driver advanced design, the design of current mode DC-DC converter works in DCM mode,which can ensure the load current is a high efficiency and without slope compensation circuit. Using the dual current feedback loop control, the results show that drive design is safe and reliable, and has a certain help to improve the quality...

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照相手机的LED闪光灯驱动电路设计的改进.pdf 246K

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