National Changhua University of Education Institutional Repository : Item 987654321/11186
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题名: An Improved Digital-Dimming Controller for Back-light Module Applying Frequency-Shift Technique
作者: Lin, Chang-Hua;Chen, Liang‐Rui;Pai, Kai-Jun
贡献者: 電機工程系
日期: 2003-11
上传时间: 2012-06-05T06:51:58Z
出版者: IEEE
摘要: A novel simple control method to improve the ignition behavior of cold cathode fluorescent lamp in digital-dimming mode is proposed in this paper. The half-bridge resonant inverter is employed in the presented back-light system. To extend the lamp life, we realize a digital-dimming controller with frequency-shift technique (DDC-FST) to reduce the high ignition voltage and to eliminate the ignition current spike. Complete analysis and design considerations are discussed in detail in this paper. Simulation and experimental results are close to the theoretical prediction. The overall efficiency of the system achieved at the rated power is over 91%. The ignition voltage is reduced about 30% without any lamp current spike occurred under digital-dimming operation.
關聯: IEEE IECON, Nov. 2003: 496-501
显示于类别:[電機工程學系] 會議論文

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