A high efficiency boost white LED driver with an integrated Schottky diode

Yuan Ta Hsieh, Bin Da Liu, Jian Fu Wu, Chiao Li Fang, Hann Huei Tsai, Ying Zong Juang

研究成果: Conference contribution

2 引文 斯高帕斯(Scopus)

摘要

Size and battery life are important issues for portable devices. White light-emitting diodes (WLEDs) have thus replaced cold cathode fluorescent lamps as backlight sources. Since WLEDs are small and highly efficient, a good WLED backlight driver design can reduce the size of portable devices and extend their operation time. This paper proposes a high efficiency boost WLED driver with an integrated Schottky diode. The DC-DC converter structure allows high efficiency and the on-chip compensator and Schottky diode reduce the board area. The driver also enhances the substrate noise immunity. The simulation results show that the substrate noise was reduced from ±1.8 to ±0.8 V. The driver was fabricated in the TSMC 0.25-μm bipolar-CMOS-DMOS process. For a load of six VLEDs at an input voltage of 4.3 V, the power efficiency was 91.6%.

原文English
主出版物標題Proceedings of the 2010 Asia Pacific Conference on Circuit and System, APCCAS 2010
頁面660-663
頁數4
DOIs
出版狀態Published - 2010 十二月 1
事件2010 Asia Pacific Conference on Circuit and System, APCCAS 2010 - Kuala Lumpur, Malaysia
持續時間: 2010 十二月 62010 十二月 9

出版系列

名字IEEE Asia-Pacific Conference on Circuits and Systems, Proceedings, APCCAS

Other

Other2010 Asia Pacific Conference on Circuit and System, APCCAS 2010
國家Malaysia
城市Kuala Lumpur
期間10-12-0610-12-09

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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