研究生: |
劉咸志 HSIEN-CHIH LIU |
---|---|
論文名稱: |
自動調光之多通道高匹配電流LED驅動IC A Multi-Channel Highly Precise Current Matching LED Driver for Dimming Light |
指導教授: |
陳伯奇
Poki Chen |
口試委員: |
鄒應嶼
Ying-Yu Tzou 陳怡然 Yi-Jan Chen 許孟烈 Meng-Lieh Sheu 姚嘉瑜 Chia-Yu Yao |
學位類別: |
碩士 Master |
系所名稱: |
電資學院 - 電子工程系 Department of Electronic and Computer Engineering |
論文出版年: | 2014 |
畢業學年度: | 102 |
語文別: | 中文 |
論文頁數: | 86 |
中文關鍵詞: | LED驅動電路 、數位脈衝寬度調變技術 、電流平衡 、高精度佈局 |
外文關鍵詞: | LED Driver, Digital Pulse Width Modulator (DPWM), Current Balance, Highly Matched Layout. |
相關次數: | 點閱:576 下載:3 |
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此篇論文製作一個高精確度匹配電流LED驅動電路晶片。藉由本篇論文提出的高精度晶片佈局技術幫助下,各通道間的LED電流可達到極為精確的匹配,對製程、溫度、電壓(PVT)變異擁有高容忍度。本論文採用數位脈衝寬度調變(Digital Pulse Width Modulation,DPWM)方式,利用人眼視覺暫留的現象以完成定電流LED亮度調整,避免色彩偏移(Color Shift)問題,且具有線性調光功能。
即使在包含高壓電晶體的情況下,經由量測後發現LED各通道的電流最大變動量僅僅在 -0.385%~0.372% 之間,優於其他常規的表現。本篇論文的LED電流溫度係數,在-40℃~160℃之間的範圍及20mA的電流下低於25ppm/℃。本晶片使用TSMC製程為0.25μm 1P3M CMOS 60V製程,晶片面積為1.15*1.9mm2。
In this thesis, a LED driver with precise current matching is proposed. Through the help of highly matched layout scheme, the accurately matched LED currents for multi-channel are achieved with high tolerance to process, temperature and voltage (PVT) variations. The color shift problem of LED brightness can be avoided by using digital pulse width modulation (DPWM) control, and the DPWM technique has capability of linear dimming.
Even with high voltage MOSFETs, the maximum current mismatch among LED channels is measured to be merely -0.385%~0.372% which is much better than those of the conventional ones. The temperature coefficient of this circuit is as low as 25ppm/℃ over -40℃ ~ 160℃ range for 20mA LED driving current. This circuit was fabricated in TSMC 0.25μm 60V high voltage 1P3M cmos process with a chip size of 1.15*1.9mm2.
[1] 林筱茹,「大尺寸面板採用LED背光源之現況與趨勢分析」,MIC產業研究報告,臺北,臺灣(2008)。
[2] 黃嘉敏,「LED產業技術採用生命週期管理—以LED背光源應用為例」,碩士論文,國立政治大學,台北(2008)。
[3] Tadashi, U., and Kevin K., “Quarterly LED and CCFL Backlight Cost Report,” DisplaySearch, February, 2010.
[4] 周志敏、周紀海、紀愛華,LED驅動電路設計與應用,五南圖書出版股份有限公司,台北(2008)。
[5] http://www.osram.tw/osram_tw/news-and-knowledge/led-home/professional-knowledge/led-basics/led-history/index.jsp ,「LED的發展史」,OSRAM。
[6] http://www.icdf.org.tw/web_pub/ 20060331181749LED產業報告.doc,財團法人國際合作發展基金會。
[7] Steve Winder, “Power Supplies for LED Driving,” MA USA, Page 20, April 1, 2008.
[8] OSRAM Opto Semiconductors, “Dimming InGaN LEDs Application Note,” 2003.
[9] J. Zhang, L. Xu, X. Wu and Z. Qian “A Precise Passive Current Balance Method for Multi-Output LED Drivers,” IEEE Transactions on Power Electronics, Vol. 26, No.8, August, 2011.
[10] Sungjin Choi and Taehoon Kim, “Symmetric Current Balancing Circuit for LED Backlight with Dimming,” IEEE Transactions on Industrial Electronics, Vol. 59, No. 4, April, 2012.
[11] 楊峻泓,「以數位脈寬調變技術為主之升壓型白光驅動電路分析與設計」, 朝陽科技大學資訊工程學系碩士論文,2005年。
[12] 郭登淵,「PWM驅動IC設計與實現」, 勤益科技大學電子工程學系碩士論文,2010年。
[13] Huang-Jen Chiu, Yu-Kang Lo, Jun-Ting Chen, Shih-Jen Cheng, Chung-Yi Lin, Shann-Chyi Mou, “A High-Efficiency Dimmable LED Driver for Low-Power Lighting Applications,” IEEE Transaction on Industrial Electronics, Vol. 57, No.2 February, 2010.
[14] Jae-Hyung Lee; Li-yan Jin; Long-Zhen Li; Pan-Bong Ha; Young-Hee Kim; “Design of parallel backlight LED driver IC,” ASIC, 2009. ASICON '09,Page(s): 1125 – 1128.
[15] 李祐銘,「LED間斷式驅動對色度表現之影響」, 國立中央大學光電所碩士論文,2007年。
[16] B.J. Patclla, A. Prodic, A. Zireger, and D. Maksimovic, “High-Frequency Digital PWM Controller IC for DC-DC Converters, ” IEEE Transactions on Power Electronics., Vol. 18, No. 1., pp.438-446, Jan. 2003.
[17] A. Prodic, D. Maksimovic, and R. W. Erickson, “Digital Controller Chip Set for Isolated DC Power Supplies,” IEEE APEC Conf., Vol. 2, pp. 866-872, Feb. 2003.
[18] A. Syed, E. Ahmed, E. Alarcon, and D. Maksimovic, “Digital Pulse Width Modulator Architectures,” IEEE PESC Conf., pp.4689-4695, June. 2004.
[19] W. Zhang, G. Feng, Y. Liu, and B. Wu, “A Digital Power Factor Correction (PFC) Control Strategy Optimized for DSP,” IEEE Transactions on Power Electronics. , vol. 19, No. 6, pp. 1474-1485, Nov. 2004.
[20] A. V. Peterchev, J. Xiao, and S. R. Sanders, “Architecture and IC Implementation of a Digital VRM Controller,” IEEE Transactions Power Electronics, Vol. 18, No. 1, pp. 356-364, Jan. 2003.
[21] D. Castinett, M. Rodriguez, and D. Maksimovic,“Simple Digital Pulse Width Modulator Under 100 ps Resolution Using General-Purpose FPGAs,” IEEE Transactions on Power Electronics, vol.28, no.10, pp. 4466-4472, Oct. 2013.
[22] A. Syed, E. Ahmed, and D. Maksimovic, “Digital PWM Controller with Feed-Forward Compensation,” IEEE APEC Conf., Vol. 1, pp. 60-66, 2004.
[23] Poki Chen, Tuo-Kuang Chen, Hsiao-Tzu Hu, Yu-Han Peng, and Yi-Jin Chen, “A Digital Pulse Width Modulator Based on Pulse Shrinking Mechanism,” IEEE PEDS Conf., pp. 833-836, Nov. 2009.
[24] Joseph Tzuo-sheng Tsai and Herming Chiueh, “-55°C TO 170°C High Linear Voltage References Circuitry In 0.18μm CMOS Techonology,” Nice, Cote d’Azur, France, 27-29 Sep. 2006.
[25] Xin Dai, Chengming He, Hanqing Xing, Degang Chen, and Randall Geiger, “Nth order central symmetrical layout pattern for non-linear gradient cancellation, ” Proceedings of the 2005 International Symposium on Circuits and Systems, pp. 4835- 4838, May 2005.
[26] 鄒昌廷、劉偉行、王晟瑋,「利用二位元數位比較器實現之8位元數位比較器」,2007 National Computer Symposium, Vol. 2, pp. 478-487, Dec. 2007.
[27] Montu Doshi and Regan Zane, “Digital Architecture for Driving Large LED Arrays with Dynamic Bus Voltage Regulation and Phase Shifted PWM,” Applied Power Electronics Conference, pp 287-293, Mar. 2007.
[28] 李孟蓉,「建立精準的鎖相迴路行為模型來快速分析製程飄移之影響」,國立中央大學電機工程所,2007年。
[29] 蕭培墉、吳孟賢,「Hspice 積體電路設計分析與模擬導論」,台灣東華書局股份有限公司,台北,Jan. 2005.
[30] 張智星,「MATLAB 程式設計與應用」,全華圖書股份有限公司,台北,Feb. 2000.
[31] P. E. Allen and D. R. Holberg, CMOS Analog Circuit Design, Oxford University Press, second ed. 2002.
[32] B. Razavi, Principles of Data Conversion System Design, IEEE Press, 1995.
[33] B. Razavi, Design of Analog CMOS Integrated Circuits, McGraw-Hill, second ed., 2001.
[34] R. JACOB Baker, CMOS Circuit Design, Layout, and Simulation, Wiley-Interscience, second ed. 2005.
[35] Yi Wang, Mingkun Gao and Donghui Guo, “Design of 16-bits Constant-Current LED Driver,” IEEE ASIC Conf, pp53-56 July, 2010.
[36] Jae-Hyoun Park, Hyung-Do Yoon and Kyeung-Hak Seo, “Implementation of multi-channel LED driver with low inter-channel current deviation using self-optimized active current regulator,” IEEE International Conference on Electronics, Circuits and Systems, pp1033-1036, Dec. 2010.
[37] Dongkyung Park and Hoi Lee, “A 40V 10W 93%-Efficiency Current-Accuracy-Enhanced Dimmable LED Driver with Adaptive Timing Difference Compensation for Solid-State Lighting Applications,” Custom Integrated Circuits Conference, pp1-4, Sept. 2013.
[38] Zhidong Liu and Hoi Lee, “A 25W 97%-Efficiency 3.5MHz Integrated Dimmable LED Driver with Lossless Synchronous Current Control and Floating NMOS-Sensing Scheme,” Applied Power Electronics Conference, pp1378-1383, Mar. 2014.