本論文為提出一種新型零電壓切換控制策略，採用準諧振返馳式轉換器(Quasi-Resonant Flyback Converter)，搭配新型波谷切換控制電路，目的是使返馳式轉換器的主開關達到波谷切換，進而減少開關切換時所造成的損失(Switching Loss)。
本論文先就新型控制電路提出設計方法，並分析傳統返馳式轉換器的元件損耗，最後比較傳統返馳式轉換器與採用新型控制策略之返馳式轉換器的效率。經多次實驗研究，本文製作輸出功率50W之準諧振返馳式轉換器，以驗證新型準諧振控制策略的可行性。

This paper proposes a new type of zero voltage switching control strategy using a quasi-resonant flyback converter with new valley switching control circuit. The purpose is to make the main switch of the flyback converter to achieve valley switching so that the resulting switching loss can be significantly reduced.
First, a design method for the new type of control circuit is proposed. The analysis on the component loss of the conventional flyback converter is then performed. Finally, the resulting efficiencies of flyback converters using the new control scheme are compared with those of conventional flyback converters. Several experiments carried out in this research show that a quasi-resonant flyback converter with a desirable output power of 50W can be produced. Therefore, the feasibility of the new quasi-resonant control scheme is verified.

摘要..............................................................i
ABSTRACT.........................................................ii
誌謝.............................................................iii
目錄.............................................................iv
表目錄...........................................................vi
圖目錄..........................................................vii
第一章、緒論.......................................................1
1.1 研究背景...................................................1
1.2 研究動機...................................................1
1.3 文獻回顧...................................................2
1.4 全文內容編排方式............................................3
第二章、硬性與柔性切換架構...........................................4
2.1 硬性切換....................................................4
2.2 柔性切換...................................................4
第三章、返馳式轉換器架構簡介.........................................6
3.1 傳統返馳式轉換器電路動作原理分析.............................6
3.2 準諧振返馳式轉換器動作原理..................................13
第四章、新型波谷切換控制策略........................................18
4.1 新型波谷切換控制策略電路設計................................18
4.2 傳統波谷切換技術簡介.......................................19
4.3 新型波谷切換控制策略分析之優勢..............................20
第五章、轉換器設計流程與實驗結果.............................22
5.1 控制IC內部方塊圖及接腳介紹.............................22
5.2 返馳式轉換器設計.............................24
5.3 實驗結果與波形.............................26
第六章、結論與未來展望.............................32
6.1 結論.............................32
6.2 未來展望.............................32
參考文獻.............................33
EXTENDED ABSTRACT.............................35
ABSTRACT.............................35
CHAPTER 1 INTRODUCTION.............................36
CHAPTER 2 SWITCHING CONTROL INTRODUCTION.............................36
CHAPTER 3 FLYBACK CONVERTER INTRODUCTION.............................36
CHAPTER 4 NEW CONTROL SCHEME INTRODUCTION.............................37
CHAPTER 5 FLYBACK CONVERTER DESIGN SPECIFICATIONS.....................37
CHAPTER 6 CONCLUSIONS AND FUTURE.............................37

[1] G. Hua, C.S. Leu, F.C. Lee,“Novel Zero-Voltage-Vansiton PWM Converters, ” IEEE Power Electronics Specialists Conf. Proc.,1992.
[2] K. Yoshida, T. Ishii, and N. Nagagata, “Zero Voltage Switching Approach for Flyback Converter,” in Proc. 14th lnt. Telecomm. Energy Con$, 1992,pp. 324-329.
[3] C. Henze, H. Martin, and D. Parsley, “Zero-Voltage Switching in Highfrequency Power Converters using Pulse Width Modulation, ” in Proc. 3rdAnn. Appl. Power Electron. Con$, 1988, pp. 33-40.
[4]K. H. Liu and F. C. Lee, "Zero-voltage switching technique in DC/DC converters," 1986 17th Annual IEEE Power Electronics Specialists Conference, Vancouver, Canada, 1986, pp. 58-70.
[5] S. Y. R. Hui, E. S. Gogani and Jian Zhang, "Analysis of a quasi-resonant circuit for soft-switched inverters," in IEEE Transactions on Power Electronics, vol. 11, no. 1, pp. 106-114, Jan 1996.
[6] H. Chung, S. Y. R. Hui and W. H. Wang, "An isolated ZVS/ZCS flyback converter using the leakage inductance of the coupled inductor," in IEEE Transactions on Industrial Electronics, vol. 45, no. 4, pp. 679-682, Aug 1998.
[7] Young-Bae Park and Hang-Seok Choi, "A efficiency improvement methodology for active mode efficiency regulation," 2008 IEEE International Symposium on Electronics and the Environment, San Francisco, CA, 2008, pp. 1-5.
[8] Dong-Kurl Kwak, Seung-Ho Lee and Do-Young Jung, "A new buck-boost dc/dc converter of high efficiency by soft switching technique," 2009 IEEE 6th International Power Electronics and Motion Control Conference, Wuhan, 2009, pp. 1295-1299.
[9] E. Jayashree and G. Uma, "Analysis, design and implementation of a quasi-resonant DC-DC converter," in IET Power Electronics, vol. 4, no. 7, pp. 785-792, Aug. 2011.
[10] Cheol O Yeon, Sang Cheol Moon, Bong Chul Kim, Jae Bum Lee and Gun Woo Moon, "Design of series input parallel output interleaved flyback converter for 75W AC-DC adapter," 2012 IEEE Vehicle Power and Propulsion Conference, Seoul, 2012, pp. 1238-1243.
[11] C. E. Kim, D. K. Yang, J. B. Lee and G. W. Moon, "High-Efficiency Two-Inductor PFC Boost Converter Employing SPDT Relay," in IEEE Transactions on Power Electronics, vol. 30, no. 6, pp. 2901-2904, June 2015.
[12] 鄭玉南，“返馳式轉換器緩振電路研究＂，國立臺灣科技大學電子工程學系碩士論文，2004年。
[13] 吳義利，切換式電源轉換器原理與實用設計(實例設計導向)，文笙書局股份有限公司，2015年。
[14] Mohan, Undeland, Robbins/原著；江炫樟/編譯，“電力電子學”，第三版，全華圖書股份有限公司，2016年。
[15] 謝沐田編著，“高低頻變壓器設計(修訂版)”，第三版，全華圖書股份有限公司，2010年。
[16] 原田耕介，“新型柔性切換式電源技術入門”，第一版，全華圖書股份有限公司，1992年
[17] 顏至良，“主僕準諧振返馳式轉換器之研製”，國立臺灣科技大學電子工程系研究所，2008年。
[18] 陳彥捷，“雙模式控制返馳式轉換器最佳化設計”，國立臺灣科技大學電子工程系研究所，2011年。
[19] 張靖岳，“新型輕載零電壓切換之同步整流降壓式轉換器”，國立虎尾科技大學車輛工程系研究所，2015年。
[20] Champion Microelectronic Corporation,“CM3843,Current Mode PWM Controller,”DataSheet,2001.
[21] 林輝菖，“高效率準定頻準諧振返馳式轉換器”，國立臺灣科技大學電子工程系研究所，2015年。