本論文之主要目的為分析與研製一應用於TRIAC調光之LED驅動電路。本論文首先分析TRIAC元件特性以及TRIAC調光器的動作原理，並探討LED燈泡接至調光器上所產生的問題。最後實作一個可取代60 W白熾燈，輸入電壓為90~135 V，且能應用於TRIAC調光之7.7 W LED驅動電路，此電路為兩級架構。前級為昇壓型轉換器作為功率因數修正器，並提供TRIAC穩定工作所需之維持電流。後級為返馳式轉換器，用於調整LED的電流。實驗結果顯示，本論文所實驗之LED驅動電路在非調光時功率因數達0.97以上，效率74％以上。使用TRIAC調光時，無閃爍現象發生，調光穩定性高。

In this thesis, the analysis and implementation of LED driver for TRIAC dimming is presented. The characteristics of the TRIAC device are analyzed and the operating principle of the TRIAC dimmer is discussed. Also, the problem of LED dimmed with TRIAC dimmer is studied. Finally, a 7.7 W LED driver for TRIAC dimming is implemented to replace a 60 W incandescent lamp with 90~135 Vrms input AC voltage range. The front-stage is a boost converter which functions as the power factor correction also provides the required holding current for TRIAC dimmer. The second stage is flyback converter which is used to regulate output LED current. The experimental results show that the power factor is over 0.97, and the efficiency is over 74%. Also, no flicker is measured and the light output is very stable with TRIAC dimmer.

[1]Energy Star, Energy Star Program Requirement for Solid State Lighting Luminaires, December 2008.
[2]謝緯杰，「LED於一般照明之應用前景」，光連雙月刊，2008年3月no.74.
[3]National Semiconductor，「一般照明系统：MR16燈泡和利用TRIAC調光器的LED燈」。
[4]International electromechanical commission, "IEC 61000-3-2 standards: Limits for Harmonic Current Emissions," 2005.
[5]Energy Star, "Energy Star Program Requirement for Solid State Lighting Luminaires, " Dec. 2008.
[6]新綠科技，新世代的LED照明調光設計http://www.ledinside.com.tw/knowledge/20100623-12966.html
[7]柯聖浩、張英彬，「LED驅動電路設計實務」，儒林圖書公司，民國101年。
[8]林慶仁，「幾種家庭用控制器的原理」，中央研究院地球科學研究所，新電子雜誌，2001‧8月號第185期 p185∼188。
[9]陳天清、廖信德、戴任詔，「機電整合 第二版」，高立圖書有限公司，民國九十四年。
[10]D. R. Patrick, S. W. Fardo著; 賴柏洲譯，「工業電子裝置與系統」，東華書局，民國七十七年。
[11]張勁燕，「工業電子學」，五南圖書出版公司，民國九十年。
[12]T. J. Maloney著; 顏晴榮、許文昌、曾乙申譯，「工業電子學」，民國九十三年。
[13]王醴，「工業電子學」，全威圖書有限公司，民國九十六年。
[14]STMicroelectronics, " AN2711 Application note 15 W offline TRIAC dimmable LED driver" , 2008.
[15]林明德，「高功率AC LED 交流電壓驅動特性研究」， 國立中央大學光電科學研究所碩士論文，民國九十六年七月四日
[16]陳旻鴻，「交流發光二極體特性之研究」，國立成功大學電機工程學系碩士論 文，民國九十八年六月
[17]陳琬鎔，「可置換螢光燈之LED燈驅動電路設計與研製」，國立成功大學電機工程學系碩士論文，民國一百零一年五月
[18]翁思榮，「TRIAC調光控制電路之白光LED燈驅動電路」， 國立中山大學電機工 程學系碩士論文，民國一百零一年七月
[19]NXP semiconductors, "BT136-600E datasheet", 2011
[20]D. Rand, B. Lehman, A. Shteynberg, "Issues, Models and Solutions for Triac Modulated Phase Dimming of LED Lamps", IEEE PESC, pp. 1398-1404, 2007.
[21]A. Tjokrorahardjo, "Simple Triac Dimmable Compact Fluorescent Lamp Ballast and Light Emitting Diode Driver", IEEE APEC, pp.1352-1357, 2010.
[22]X. Xie, J. Wang, C. Zhao, Q. Lu, and S. Liu , "A Novel Output Current Estimation and Regulation Circuit for Primary Side Controlled High Power Factor Single-Stage Flyback LED Driver", IEEE Trans. on Power Electronics, vol.27, no.11, pp.4602-4612, 2012.
[23]J. Zhang, H. Zeng, and T. Jiang, " A Primary-Side Control Scheme for High-Power-Factor LED Driver With TRIAC Dimming Capability", IEEE Trans. on Power Electronics, vol.27, no.11, pp.4619-4629, 2012.
[24]C. W. Lin and Y. Y. Tzou, "Digital Voltage Control of Boost CRM PFC AC/DC Converters with TRIAC Phase Control Dimmer", IEEE POWERCON, p1-6, 2012.
[25]J. T. Hwang, M. S. Jung, D. H. Kimt, J. H. Lee, M. H. Jung, and J. H. Shin, "Off-the-Line Primary Side Regulation LED Lamp Driver With Single-Stage PFC and TRIAC Dimming Using LED Forward Voltage and Duty Variation Tracking Control", IEEE Journal of Solid-State Circuit,vol.47, no.12, 2012.
[26]Fairchild Semiconductor, "AN-9745 Design Guide for TRIAC Dimmable LED Driver Using FL7730" , 2011.
[27]H. Eom, C. C. Lee, T. Y. Yang and S. Yang, PCIA AE & RD, Fairchild Semiconductor, "Design Optimization of TRIAC-Dimmable AC-DC Converter in LED Lighting", IEEE APEC, pp.831-835, 2012.
[28]Fairchild Semiconductor, "FL7730 Single-Stage Primary-Side-Regulation PWM Controller for PFC and LED Dimmable Driving", 2011.
[29]iWatt, "iW3614 AC/DC Digital Power Controller for High Power Factor Dimmable LED Drivers", 2012.
[30]L. Yan, B. Chen, J. Zheng, "A New TRIAC Dimmable LED Driver Control Method Achieves High-PF and Quality-of-light", IEEE APEC, pp.969-974, 2012.
[31]Texas Instruments Incorporated , "LM3445 Triac Dimmable Offline LED Driver", 2011.
[32]Texas Instruments Incorporated, " LM3450A LED Drivers with Active Power Factor Correction and Phase Dimming Decoder", 2011.
[33]Teccor Electronics, " AN1003 Phase Control Using Thyristors",2002.
[34]Philips Semiconductors, "Chapter6 Power Control with Thyristors and Triacs",1994.