一个多通道LED驱动器，具有精确的电流控制和可调的LED数字

2012 8th International Caribbean Conference on Devices, Circuits and Systems (ICCDCS) Pub Date : 2012-03-14 DOI:10.1109/ICCDCS.2012.6188918

Chu-Hsiang Chia, Pui-Sun Lei, R. Chang, Pei-Wei Ko

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引用次数: 0

摘要

本文提出了一种具有PFM控制的多通道LED驱动器，该驱动器的通道与LED编号无关。在不同的LED编号下，每个通道的驱动电流几乎相同。目前的误差仅为0.054%，优于之前的设计。采用台积电0.35μm 3.3V/5V CMOS工艺设计。采用新型电流平衡电路的驱动器输出电压为15.6V，最大负载为150mA。

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A multi-channel LED driver with accurate current control and adjustable LED numbers

This paper presents a multi-channel LED driver with PFM control which channels are independent of the LED numbers. Every channel can have almost the same driving current under different LED numbers. The current error is only 0.054% that is better than the previous design. It is designed by using TSMC 0.35μm 3.3V/5V CMOS technology. The proposed driver with the novel current balance circuit can have 15.6V output voltage and the maximum loading is 150mA.

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来源期刊

2012 8th International Caribbean Conference on Devices, Circuits and Systems (ICCDCS)

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