The Remote and High Precision Current Control System of Multiple High Power LEDS

DOI

10.2991/ceie-16.2017.53How to use a DOI?

Keywords

LED Constant Current Drive Circuit; High Precision; Control Algorithm; Remote Control

Abstract

For the remote control of multi-channel high power LEDS, a high-precision LED current control system is proposed. A microcontroller system based on STM32F217ZET containing a four-channel high power LED driver circuit based on LT3755-1 was designed. The high-precision current control compensation algorithm is presented, which divides the current control function into three parts and adds proportionality and shift coefficients to the function, improving the current control accuracy from 25% to ñ1%. The output current of each channel can be continuously adjusted from 200mA to 1800mA, with the single channel output power able to reach 90W and the output voltage able to reach 50V. The system proposed can be monitored via TCP/IP through the remote PC interface.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Yihuang Lin
AU  - Juan Liu
AU  - Lingling Sun
AU  - Xi Chen
AU  - Cunkai Qiu
AU  - Gaofeng Zheng
PY  - 2016/10
DA  - 2016/10
TI  - The Remote and High Precision Current Control System of Multiple High Power LEDS
BT  - Proceedings of the International Conference on Communication and Electronic Information Engineering (CEIE 2016)
PB  - Atlantis Press
SP  - 423
EP  - 433
SN  - 2352-5401
UR  - https://doi.org/10.2991/ceie-16.2017.53
DO  - 10.2991/ceie-16.2017.53
ID  - Lin2016/10
ER  -