本篇論文主要研製一台輸出電壓可調式電源供應器，所採用之架構由三級電路所組成：第一級電路為降壓型功率因數修正器，改善電源的功率因數，進而達到良好的電力品質。第二級電路為具有同步整流之半橋串聯諧振式轉換器，利用零電壓切換與同步整流技術，以達到高轉換效率的要求。第三級電路為數位化降壓型轉換器，採用德州儀器所開發的數位信號處理器TMS320F28035作為控制器，並調整輸出電壓的範圍。
最後設計並實作出一台57 W寬範圍電壓輸入之可調式電源供應器，其輸出電壓範圍為5 V至19 V，在115 Vac交流電壓輸入下，輸出電壓15 V時，整機最高效率可達85.98 %。

This thesis focuses on the study and implementation of a power supply with adjustable output voltage. The converter structure consists of three stages: The first-stage circuit is a buck power factor corrector (PFC) to improve the input power factor. The second-stage circuit is a half-bridge series resonant converter. In order to further improve the efficiency, zero-voltage switching and synchronous rectification technologies are adopted. The third-stage circuit is a digitally-controlled buck converter. A digital signal processor, TMS320F28035 developed by Texas Instruments, is used as the controller to adjust the output voltage.
In this thesis, a 57-W adjustable power supply with universal input voltage and an output voltage ranging from 5 V to 19 V is designed and implemented. The peak efficiency can be up to 85.98% at 115-Vac input voltage and 15-V output voltage.

[1]A. I. Pressman, Switching Power Supply Design, Third Edition, McGraw-Hill, 2009.
[2]梁適安，交換式電源供給器之理論與實務設計，第二版，台北：全華圖書，2008年。
[3]O. Garcia, J. A Cobos, R. Prieto, P. Alou, and J. Uceda, “Single- phase power factor correction: a survey,” IEEE Transaction on Power Electronics, vol. 18, no. 3, pp. 749-755, June 2003.
[4]J. Dukdrik, P. Spanik, and N. D. Trip, “Zero-voltage and zero-current switching full-bridge dc-dc converter with auxiliary transformer,” IEEE Transactions on Power Electronics, vol. 21, no. 5, pp. 1328-1335, Sept. 2006.
[5]F. T. Wakabayashi and C. A. Canesin, “A new family of zero-current-switching PWM converters and a novel HPF-ZCS-PWM boost rectifier,” in. Proc. IEEE Applied Power Electronics Conference and Exposition, vol. 1, pp. 605-611, Mar. 1999.
[6]C. A. Canesin and I. Barbi, “Novel zero-current-switching PWM converters,” IEEE Transactions on Industrial Electronics, vol. 44, no. 3, pp. 372-381, June 1997.
[7]C. M. Wang, “A new family of zero-current-switching (ZCS) PWM converter,” IEEE Transactions on Industrial Electronics, vol. 52, no. 4, pp. 1117-1125, Aug. 2005.
[8]Texas Instruments Inc, “Power factor correction using the buck topology-efficiency benefits and practical design considerations,” Application Note SLUP264, June 2010.
[9]Teaxs Instruments Inc., “UCC29910 Buck PFC Controller,” Datasheet, June 2010.
[10]陳育文，交錯式降壓型功率因數修正器之研製，國立台灣科技大學電子工程系碩士論文，中華民國102年。
[11]S. C. Wong, A. D. Brown, Y. S. Lee, and S. W. Ng, “Parasitic losses modeling of a series resonant converter circuit,” in Proc. IEEE International Symposium on Circuits and Systems, vol. 2, pp. 921-924, June 1997.
[12]A. K. S. Bhat, “Analysis and design of a modified series resonant converter,” IEEE Transactions on Power Electronics, vol. 8, no. 4, pp. 423-430, Oct. 1993.
[13]B. Yang, “Topology Investigation for Front End DC/DC Power Conversion for Distributed Power System,” Ph.D. Dissertation, Sept. 2003.
[14]M. K. Kazimierczuk and S. Wong, “Frequency-domain analysis of series resonant converter for continuous conduction mode,” IEEE Transactions on Power Electronics, vol. 7, no. 2, pp. 270-279, Apr. 1992.
[15]R. Liu, C. Q. Lee, and A. K. Upadhyay, “Experimental study of the LLC-type series resonant converter,” in. Proc. IEEE Applied Power Electronics Conference and Exposition, pp. 31-37, Mar. 1990.
[16]R. L. Ozenbaugh, “EMI filter design,” Marcel Dekker, Inc. 1996.
[17]C. A. Canesin and I. Barbi, “Analysis and design of constant- frequency peak-current-controlled high-power-factor boost rectifier with slope compensation,” in Proc. IEEE Applied Power Electronics Conference and Exposition, vol. 2, pp. 807-813, Mar. 1996.
[18]曾軍皓，高效能功率因數修正器研製，國立台灣科技大學電子工程系研究所碩士論文，中華民國95年。
[19]Texas Instruments Incorporated, “UC3854 High Power Factor Preregulator” 1999.
[20]L. Huber and M. M. Jovanović, “Design-oriented analysis and performance evaluation of clamped-current-boost input-current shaper for universal-input-voltage range,” IEEE Transactions on Power Electronics, vol. 13, no. 3, pp. 528-537, May 1998.
[21]L. Huber, L. Gang, and M. M. Jovanovic, “Design-oriented analysis and performance evaluation of buck PFC front-end,” IEEE Transactions on Industrial Electronics, vol. 25, no. 1, pp. 85-94, May 2010.
[22]謝孟軒，交錯式降壓型功率因數修正器電磁干擾研究，國立台灣科技大學電子工程系碩士論文，中華民國102年。
[23]On Semiconduction, “Ramp Compensation for the NCP1200,” Application Note, Mar. 2001.
[24]陳揚斌，高效率LLC同步整流串聯諧振轉換器之研製，國立台灣科技大學電子工程系碩士論文，中華民國98年。
[25]彭譽耀，交錯式半橋串聯諧振轉換器研製，國立台灣科技大學電子工程系碩士論文，中華民國101年。
[26]Texas Instruments, “TMS320F28030/28031/28032/28033/28034/
28035 Piccolo Microcontrollers,” Reference Guide, May 2012.
[27]A. S. Sedra and K. C. Smith, Microelectronic Circuits, 5th Edition. New York: Oxford University Press, 2004, pp. 82-83.
[28]Texas Instruments, “TMS320x2802x, 2803x Piccolo Analog to Digital Converter (ADC) and Comparator,” Reference Guide, Dec. 2011.
[29]蔡富斌，具同步整流之數位控制半橋串聯諧振轉換器之研製，國立台灣科技大學電子工程系碩士論文，中華民國101年。
[30]Texas Instruments, “TMS320x2802x, 2803x Piccolo Enhanced Pulse Width Modulator (ePWM) Module,” Reference Guide, Mar. 2011.
[31]TMicroelectronics Inc, “UC3842 Current Mode PWM Controller,” Datasheet, June 1999.
[32]Champion, “CM6901 Resonant Controller,” Datasheet, Nov. 2009.