Multi-channel LED driver with self-optimized active current regulator
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概要
- 論文の詳細を見る
A novel multi-channel LED driver is presented, consisting of an active current regulator and a switch-mode voltage regulator for each channel. This driver is implemented using a 0.35µm 40V high voltage process. The active current regulator directly controls an LED-current without any current-sensing resistor and its operating voltage is self-optimized by the switch-mode voltage regulator. This self-optimization is successfully achieved and the active current regulators have channel-current deviations of a maximum of ±2%. Its power-conversion efficiency is up to 91% at the load power of 7W.
- The Institute of Electronics, Information and Communication Engineersの論文
著者
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Park Jae-Hyoun
Korea Electronics Technology Institute
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Yoon Hyung-Do
Korea Electronics Technology Institute