本論文提出對高效率LLC 諧振式轉換器之設計及基礎概念，並且在LLC諧振與同步整流之間做時序上連結，以降低暫態電壓與逆電流，進而可降低元件損失。為了接近市場應用，提出目前業界常使用之規格，以期在實際運用面得到發揮，讓高效率轉換器更能接觸到生活中，達成節能減碳之目的。本文所提出之利用同步整流線路可降低二次側流過大電流情況下之導通與切換損失，並且與高效率LCC諧振做時序上連結，以提升轉換器整體效率，因此，時序控制對電源供應器是相當重要的課題。最後，文中將依據電路分析設計與相關實務考量，製作一個具同步整流與LLC諧振雙變壓電源供應器，再藉由硬體量測結果驗證其效能及可行性，以符合實際商品化之高效率電源供應器。

In this thesis, the basic concepts and designed guide lines of LLC resonant converter, the link on the timing between resonant and synchronous rectification to reduce the transient voltage and reverse currents and in turn decreasing the component losses are discussed. Moreover, for the purpose of market applications, the most commonly used specifications of the switching power supplies are discussed in order to introduce the high efficiency convertor products to the vast users to achieve the goals of energy saving and carbon reduction. Furthermore, the high conduction and switching losses due to high current can be reduced through the secondary side synchronous rectifier circuit. In addition, the link on the timing between resonant and synchronous rectification can reduce the transient voltage and reverse currents and in turn decreasing component losses. Thus, the efficiency of the switching power supplies can be improved. Finally, for practical applications, a LLC resonant converter with synchronous rectifier and parallel transformers has been built. The designed performance, feasibility and commercialization of the proposed high efficiency power supply can be verified effectively from the experimental measurements.

[1] “Efficient Power Solutions Seminar,” ON Semiconductor, 2005.
[2] “80 Plus Certified Power Supplies and Manufacturers Guidelines,” Ecos Plug load solutions, 2010.
[3] 蔡坤哲，液晶電視電源供應系統之設計與研究，南台科技大學電機工程研究所論文，2007。
[4] B. Yang, F. C. Lee, A. J. Zhang and G. Huang, “LLC Resonant Converter for Front End DC/DC Conversion,” IEEE Applied Power Electronics Conference and Exposition, 2002, vol. 2, pp. 1108-1112.
[5] B. Yang, R. Chen and F. C. Lee, “Integrated Magnetic for LLC Resonant Converter,” IEEE Applied Power Electronics Conference and Exposition, 2002, vol. 1, pp. 346-351.
[6] Y. Fang, D. Xu, Y. Zhang, F. Gao and L. Zhu, “Design of High Power Density LLC Resonant Converter with Extra Wide Input Range,” IEEE Applied Power Electronics Conference, 2007, pp. 976-981.
[7] R. S. Kagan, M. Chi and C. Hu, “Improving Power Supply Efficiency with MOSFET Synchronous Rectifiers,” Proc. POWERCON 9, 1982.
[8] D. Fu, Y. Liu, F. C. Lee and M. Xu, “An Improved Novel Driving Scheme of Synchronous Rectifiers for LLC Resonant Converters,” IEEE Applied Power Electronics Conference and Exposition, 2008, pp. 510- 516.
[9] H. S. Choi, “Design Consideration of Half-bridge LLC Resonant Conve- rter,” Fairchild Semiconductor, 2006.
[10] J. W. Huang, S. C. Wang and Y. H. Liu, “Design of a Digitally-controlled LLC Resonant Converter,” National Taiwan University of Science and Technology, 2011.
[11] Y. Gu, Z. Lu, L. Hang and Z. Qian, “Three-level LLC Series Resonant DC/DC Converter,”Applied Power Electronics Conference and Expositi- on, 2004, vol. 3, pp. 1647-1652.
[12] A. K. S. Bhat, “Analysis and Design of LCL-type Series Resonant Conv- erter,” IEEE Transactions on Industrial Electronics, 1994, vol. 41, no. 1, pp. 118-124.
[13] B. Lu, W. Liu, Y. L. Lee, F. C. Wyk and J. D. , “Optimal Design Methodology for LLC Resonant Converter,” IEEE Applied Power Electronics Conference and Exposition, 2006.
[14] U. Badstuebner, J. Biela, D. Christen and J. W. Kolar, “ Optimization of a 5kW Telecom Phase-shift DC-DC Converter with Magnetically Integrat- ed Current Doubler,” IEEE Transactions on Industrial Electronics, 2011, vol. 58, no. 10, pp. 4736-4745.
[15] B. Lu, “Topology Investigation for Front End DC/DC Power Conversion for Distributed Power System,” Doctor of Philosophy in Electrical Engineering, 2003.
[16] B. Yang and F. C. Lee, “Small Signal Analysis for LLC Resonant Conve- rter,” Virginia Polytechnic Institute and State University, 2002.
[17] M. P. Foster, C. R. Gould, A. J. Gilbert, D. A. Stone and C. M. Bingham, “Analysis of CLL Voltage-output Resonant Converters Using Describing Functions,” IEEE Transactions on Industrial Electronics, 2008, vol. 23, no. 4, pp. 1772-1781.
[18] A. Mohammadpour, H. Mokhtari and M. R. Zolghadri, “Control of Series Resonant Converter with Robust Performance Against Load and Power Circuit Components Uncertainties,” IEEE Power Electronic & Drive Systems & Technologies Conference, 2010, pp. 122-128.
[19] J. H. Jung, J. M. Choi and J. G. Kwon, “ Design Methodology for Transformers Including Integrated and Center-tapped Structures for LLC Resonant Converters,” Samsung Electronics Co. , 2009.
[20] C. Chakraborty, M. Ishida and Y. Horim , “Novel Half-bridge Resonant Converter Topology Realized by Adjusting Transformer Parameters,” IEEE Transactions on Industrial Electronics, 2002, vol. 49, no. 1, pp. 197-205.
[21] Y. Liu, “High Efficiency Optimization of LLC Resonant Converter for Wide Load Range,” Blacksburg Virginia, 2007.
[22] 鄒應嶼，諧振轉換與柔性切換技術，國立交通大學，2006。
[23] 黃賢德，高效率LLC諧振式切換式電源供應器電路之設計與分析， 國立東華大學電機工程研究所碩士論文，2006。
[24] B. Yang and F. C. Lee, “Over Current Protection Methods for LLC Reso- nant Converter,” IEEE Applied Power Electronics Conference and Exposition, 2003, vol. 2, pp. 605-609.
[25] B. C. Hyeon, “Multiple Output of Dual Half bridge LLC Resonant Con- verter Using PFM-PD Control,” IEEE Energy Conversion Congress and Exposition, 2009, pp. 1133-1140.
[26] D. Fu, Y. Liu and F. C. Lee, “An Improved Novel Driving Scheme of Synchronous Rectifiers for LLC Resonant Converter,” IEEE Applied Power Electronics Conference and Exposition, 2008, pp. 510-516.
[27] B. Acker, C. R. Sullivan and S. R. Sanders, “Current-controlled Synchro- nous Rectification,” IEEE Applied PowerElectronics Conference, 1994, vol. 1, pp. 185-191.
[28] N. Huapeng, P. Yunqing, Y. Xu, W. Laili and W. Zhaoan, “Design of High Power Density DC Bus Converter Based on LLC Resonant Converter with Synchronous Rectifier,” IEEE Power Electronics and Motion Control Conference, 2006, pp. 540-543.
[29] “ATX12V Power Supply Design Guide,” Intel Corporation, 2008.
[30] “EPS2.93 Power Supply Design Guide,” Intel Corporation, Dell Computer Corporation, Hewlett Packard Company, Silicon Graphics Inc. and International Business Machines Corporation, 2004.
[31] “The Power Behind Your Designs, ” Texas Instruments, 2005.
[32] 劉濱達，電路學，台灣東華書局股份有限公司，1996。
[33] 葉瑞祥，電子學，廣華書局，1992。
[34] H. Huang, “LLC Resonant Half Bridge Converter,” Texas Instruments , 2009.
[35] W. H. Hayt, “Engineering Electromagnetics Seventh Edition,” McGraw Hill, New York, 2006.
[36] P. J. Nahin, “Oliver Heaviside: Sage in Solitude,” New York, 1988.
[37] E. S. Kim, J. H. Kim, K. H. Lee and Y. S. Jeon, “LLC Resonant Convert- er with Two Resonant Tanks,” IEEE Applied Power Electronics Confere- nce and Exposition, 2010, pp. 1949-1956.
[38] S. A. Liang, “A High Power and High Efficiency PC Power Supply Topology with Low Cost Design to Meet 80 Plus Bronze Requirements,” IEEE International Conference on Industrial Technology, 2009.
[39] “IR11672AS Application Note, ” International Rectifier Inc. , 2009.
[40] “SBR30A40CT Application Note,” Diodes Inc. , 2006.
[41] “IRFB3206PbF Application Note,” International Rectifier Inc. , 2008.
[42] 龐敏熙，電力轉換器電磁干擾(EMI)，台灣科技大學電機系，2007。
[43] K. H. Billings, “Switch mode Power Supply Handbook,” The McGraw- Hill Companies Inc. , 1999.
[44] 材質產品介紹，越峰電子材料股份有限公司，2008。
[45] “EMC Test Report,” Cerpass Technology Corp, 2010.
[46] “W6251 Application Note,” Sanken Inc. , 2008.
[47] “UCC280270 Application Note,” Texas Instruments, 2011.
[48] “TDA4863-2G Application Note,” Infineon Technologies, 2005.
[49] “ICE2PCS02G Application Note,” Infineon Technologies, 2007.
[50] “L6730 Application Note,” ST Microelectronics, 2009.
[51] “APW7073 Application Note, ” 茂達電子股份有限公司，2008。
[52] “PS238 Application Note,” 點晶科技股份有限公司，2008。
[53] 劉濱達，電子電路，台灣東華書局股份有限公司，1996。
[54] “PIC24FJ64GA004 Family Application Note,” Microchip Technology Inc. , 2008.
[55] “Little Fuse Application Note,” Little Fuse Inc. , 2008.
[56] “LL25XB60 Application Note,” Shindengen America Inc. , 2006.
[57] 鐵心材質產品介紹，台灣東電化股份有限公司，2008。
[58] “L6598 Application Note,” ST Microelectronics, 2009.
[59] “L6599A Application Note,” ST Microelectronics, 2009.
[60] “SSC9522 Application Note,” Sanken Inc. , 2011.
[61] “CM6901 Application Note,” Champion Microelectronic Corporation, 2009.