本論文針對高亮度發光二極體(High Brightness LED)所需之驅動及數位調光控制進行研究，一般LED驅動電路包含功率因數修正器(Power Factor Corrector, PFC)與直流/直流轉換器(DC/DC Converter)來實現高功率因數跟均流控制。本論文採用單級返馳式功率因數修正器架構，以減少元件數與提升轉換效率，並加入雙匯流排(Twin-Bus)調光電路達到開關應力降低的目的。本論文詳細分析電路的動作原理以及設計參數，並完成一雛型電路驗證此控制與架構方式之可行性，根據實驗的結果，確實已達成效率的優化與數位調光的技術。

This thesis aims to study the driving and dimming circuits by using the digital control for high-brightness LED lamps. Conventional LED driver consists of a power factor corrector and a DC/DC converter to achieve high power factor and good current regulation. This thesis studies a single-stage flyback PFC converter to reduce the component count and raise the conversion efficiency. A twin-bus dimming circuit is also developed to reduce the switch stresses. The operation principles and design considerations of the studied LED driver are analyzed and discussed. A laboratory prototype is designed and tested to verify the feasibility. According the experimental verifications, the overall conversion efficiency can be effectively improved. And digital dimming function is also fulfilled.

[1] http://zh.wikipedia.org/wiki/%E7%99%BC%E5%85%89%E4%BA%8C%E6%A5%B5%E7%AE%A1%E7%85%A7%E6%98%8E
[2] 宋自恆，「功率因數修正器之原理與常用元件規格」，新電子科技雜誌第217期，民國九十三年四月。
[3] L. Moran, P. Werlinger, J. Dixon and R. Wallance, “A Series Active Power Filter which Compensates Current Harmonics and Voltage Unbalance Simultaneously,” in Proc. IEEE PESC Conf., pp. 222-227, 1995
[4] C. K. Tse, Y. M. Lai, R. J. Xie, and M. H. L. Chow, “Application of Duality Principle to Synthesis of Single-stage Power-factor-correction Voltage Regulators,” International Journal of Circuit Theory and Applications, Jun. 2003, pp. 555-570.
[5] C. Souvik, K. Rajaganesh and V. Ramanarayanan, “Impedance Emulation Method for a Single Phase Shunt Active Filter,” in Proc. IEEE APEC Conf., vol. 2, 2003, pp. 907-912.
[6] L. Huber, B. T. Irving, and M. M. Jovanovic’, “Open-loop Control Methods for Interleaved DCM/CCM Boundary Boost PFC Converters,” IEEE Trans. Power Electronics., vol. 23, no. 4, pp. 1649-1657, July 2008.
[7] J. Zou, X. Ma, C. K. Tse, and D. Dai, “Fast-scale Bifurcation in Power-factor-correction Buck-boost Converter and Effects of Incompatible Periodicities,” International Journal of Circuit Theory and Applications, Vol. 34, No. 3, pp.251 -264, Mar 2006.
[8] H. Wei and I. Batarseh, “Comparison of Basic Converter Topologies for Power Factor Correction,” in Proc. IEEE Southeastcon Conf., 1998, pp 348-353.
[9] T. F. Wu, C. C. Chen, C. H. Lee, C. L. Shen, and Y. C. Wu, “Analysis, Design and Practical Consideration of a 500 W Power Factor Corrector with Soft Switching Feature,” in Proc. IEEE IAC Conf., vol. 4, 2000, pp. 2418-2425.
[10] H. J. Chiu, H. M. Huang, H. T. Yang, and S. J. Cheng “An Improved Single-stage Flyback PFC Converter for High-luminance Lighting LED Lamps,” International Journal of Circuit Theory and Applications, Vol. 32, No. 2, pp. 205-210, Mar 2008
[11] http://ir.lib.ksu.edu.tw/bitstream/987654321/10721/6/chap15.pdf.- 葉倍宏
[12] 「高亮度發光二極體市場發展趨勢與展望」，工研院產業經濟與趨勢研究中心，民國九十三年。
[13] 莊賦祥，「藍綠光發二極體」，科學發展，394期，民國九十年。
[14] 高益峰，「白光發光二極體 (LED)及照明產業」，中鼎月刊，331期。
[15] 許招庸，「現代照明實務」，全華科技圖書股份有限公司，民國八十七年。
[16] 徐子健，「電流模式控制比較」，南台科技大學，2008. 12
[17] ST Microelectronics, “Flyback Converters with the L6561 PFC Controller,” AN1060, Jan. 2003.
[18] ST Microelectronics, “Design Equations of High-power-factor Flyback Fonverters Based On The L6561,” AN1059, Sep. 2003.
[19] ST Microelectronics, “Power Factor Corrector, ” L6561 datasheet, 2004.
[20] ST Microelectronics, “Enhanced Transition Mode Power Factor Corrector, ”AN966, 2003.
[21] 顏至良，「主僕式準諧振返馳式轉換器」，國立台灣科技大學電子工程學系碩士論文，民國九十七年六月。
[22] W. D. Yu, G. Lisi, E. Reutzel, D. Anderson, H. B. Ma, J. S. Lai, A. Djabbari, J. Morroni, Y. X. Qin “High Efficiency DC-DC Converter with Twin-Bus for Dimmable LED Lighting,” in 2010 IEEE pp. 457 - 462.
[23] ST Microelectronics, “UC3842B High Performance Current Mode PWM Controller,” 1999.
[24] 梁適安，「交換式電源供給器之理論與實務設計」，台北：全華科技圖書股份有限公司，2004。
[25] 鄭世仁，「一般照明應用高效率可調光LED驅動器之研製」，國立台灣科技大學電子工程學系博士論文，民國九十九年五月。
[26] ST Microelectronics, “UC3842 Provides Low-cost Current Mode Control ,” AN246/1188, 1995.