成功大學博碩士論文系統

簡易檢索 / 詳目顯示

回結果列表

研究生：	林胤廷 Lin, Ying-Ting
論文名稱：	返馳式轉換器之一次側控制IC設計 IC Design of Primary-Side Control for Flyback Converter
指導教授：	梁從主 Liang, Tsorng-Juu
學位類別：	碩士 Master
系所名稱：	電機資訊學院 - 電機工程學系 Department of Electrical Engineering
論文出版年：	2013
畢業學年度：	101
語文別：	英文
論文頁數：	59
中文關鍵詞：	一次側控制、膝點偵測電路
外文關鍵詞：	primary-side control, knee point detector
相關次數：	點閱：50 下載：15
分享至:	分享至facebook 分享至twitter

查詢本校圖書館目錄查詢臺灣博碩士論文知識加值系統勘誤回報

摘要
本論文實現一單級交流轉直流返馳式電源供應器之一次側控制器，此控制器藉由取樣變壓器輔助繞組上之電壓來回授二次側輸出電壓。回授之電壓與輸出電壓及輸出二極體電壓之和呈正比關係。為了達到更準確的電壓回授，使用簡易的膝點偵測電路，以確保取樣的時間在電感電流為零附近。因此，每次取樣時輸出二極體的電壓可視為一定值，不受負載電流大小所影響。由於在輸入電壓過低時，輔助繞組偵測到的電壓較不準確，在此狀況下，會利用固定責任週期的方式驅動功率開關，使系統能達到良好的電壓調節率。最後，本論文採用TSMC 0.25um CMOS高壓製程實現。
關鍵字：一次側控制、膝點偵測電路

Abstract
In this thesis, a primary-side control integrated circuits for single stage AC-DC flyback converter is realized. With the primary-side control, the system area and cost can be reduced. The proposed controller samples the feedback voltage on the auxiliary winding, which is proportional to the output voltage plus the turn-on voltage of the output diode. A simple knee point detector is adopted to ensure the sampling is near the time when the inductor current is zero. Thus, the feedback voltage is more accurate under various load conditions because the diode voltage is almost constant. Since the auxiliary winding voltage can not accurately reflect the output voltage under low input voltage condition, the duty ratio is kept as constant under this condition. Thus, good load regulation can be achieved. Finally, the chip is integrated with TSMC 0.25um CMOS high voltage mixed signal general purpose process.
Keywords: primary-side control, knee point detector

TABLE OF CONTENTS
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1 Background . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2 Motivation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
3 Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Fundamental concepts of primary side control for single stage flyback converter 4
1 Operating principle of single stage flyback converter . . . . . . . . . . . . 4
2 Flyback converter with primary-side control . . . . . . . . . . . . . . . . . 10
Analysis and design of the proposed primary side controller . . . . . . . . . . 14
1 Introduction of the proposed primary-side control . . . . . . . . . . . . . . 14
2 Introduction and design of the control function blocks . . . . . . . . . . . . 17
2.1 Error amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.2 Knee point detector . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2.3 Input voltage zero crossing detector . . . . . . . . . . . . . . . . . 25
2.4 First pulse extractor . . . . . . . . . . . . . . . . . . . . . . . . . . 28
2.5 Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
2.6 Light load frequency reducing circuit . . . . . . . . . . . . . . . . 32
3 CMOS circuit design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
3.1 Two-stage Op-Amp . . . . . . . . . . . . . . . . . . . . . . . . . . 33
3.2 Comparator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
3.3 Edge detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
3.4 Buffer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
System simulation and experimental results of the proposed controller . . . . 46
1 Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
2 System simulation results . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
2.1 Waveforms of function blocks . . . . . . . . . . . . . . . . . . . . 48
3 System experimental results . . . . . . . . . . . . . . . . . . . . . . . . . 52
Conclusions and future works . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
1 Conclusions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
2 Future works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
                                    

REFERENCES
[1] A. I. Pressman, Switching Power Supply Design, 2nd ed. McGraw-Hill, 1998.
[2] M. O’Loughlin, “A hidden limitation in compensating the control loop of an isolated switching power supply,” Micro Electronics - China & Taiwan, Aug. 2004.
[3] “TLP250 photocoupler GaAIAs Ired & photo-IC,” TOSHIBA, Jun. 2004.
[4] M. Sayani, R. White, D. Nason, and W. Taylor, “Isolated feedback for off-line switching power supplies with primary-side control,” in IEEE Applied Power Electronics Conference and Exposition, pp. 203–211, 1988.
[5] R. Nalepa, N. Barry, and P. Meaney, “Primary side control circuit of a flyback converter,”in IEEE Applied Power Electronics Conference and Exposition, vol. 1, pp. 542–547, 2001.
[6] N. Mohan, T. M. Undeland, andW. P. Robbins, Power Electronics. JohnWiley & Sons, Inc., 2003.
[7] R. W. Erickson and D. Maksimovic, Fundamental of Power Electronics, 2nd ed. Kluwer Academic Pub., 2001.
[8] H. Athab, D. D. C. Lu, and K. Ramar, “A single-switch AC/DC flyback converter using a CCM/DCM quasi-active power factor correction front-end,” IEEE Transactions on Industrial Electronics, vol. 59, no. 3, pp. 1517–1526, 2012.
[9] H. J. Chiu, Y. K. Lo, H. C. Lee, S. J. Cheng, Y. C. Yan, C. Y. Lin, T. H. Wang, and S. C. Mou, “A single-stage soft-switching flyback converter for power-factor-correction
applications,” IEEE Transactions on Industrial Electronics, vol. 57, no. 6, pp. 2187–2190, 2010.
[10] L. J. Jae, J. M. Kwon, K. E. Ho, W. Y. Choi, and B. H. Kwon, “Single-stage singleswitch pfc flyback converter using a synchronous rectifier,” IEEE Transactions on Industrial Electronics, vol. 55, no. 3, pp. 1352–1365, 2008.
[11] G. C. Huang, T. J. Liang, and K. H. Chen, “Losses analysis and low standby losses quasi-resonant flyback converter design,” in IEEE International Symposium on Circuits and Systems (ISCAS), pp. 217–220, 2012.
[12] D. Maksimovic and R. Erickson, “Modeling of cross-regulation in multiple-output flyback converters,” in IEEE Applied Power Electronics Conference and Exposition, vol. 2, pp. 1066–1072, 1999.
[13] C. Ji, J. Smith, M., K. Smedley, and K. King, “Cross regulation in flyback converters: analytic model and solution,” IEEE Transactions on Power Electronics, vol. 16, no. 2, pp. 231–239, 2001.
[14] C. W. Chang and Y. Y. Tzou, “Primary-side sensing error analysis for flyback converters,”in IEEE 6th International Power Electronics and Motion Control Conference, pp. 524–528, 2009.
[15] C. W. Lin and Y. Y. Tzou, “Digital primary-side sensing and PFC control of a flyback converter,” in IEEE Energy Conversion Congress and Exposition (ECCE), pp. 2603– 2608, 2011.
[16] J. Xiao, J. Wu, W. Li, and X. He, “Primary-side controlled flyback converter with current compensation in micro-power applications,” in IEEE International Power Electronics and Motion Control Conference, pp. 1361–1366, 2009.
[17] “AP3706 primary side control IC for off-line battery chargers,” BCD Semiconductor, Mar. 2009.
[18] F. Lin, “Flyback primary side output voltage sensing system and method,” U.S. Patent, Jun. 2012.
[19] “C2162DX2 primary sensing SMPS controller,” Cambridge Semiconductor, Jun. 2010.
[20] T. C. Lin, “Apparatus and method for regulating constant output voltage and current on primary side in a flyback converter,” U.S. Patent, Dec. 2010.
[21] D. Johns and K. Martin, Analog Integrated Circuit Design. John Wiley & Sons, Inc., 1997.
[22] B. Razavi, Design of Analog CMOS Integrated Circuits. McGraw-Hill, 2001.
[23] W. M. Sansen, Analog Design Essentials. Springer, 2006.
[24] M. Afghahi and J. Yuan, “Double-edge-triggered D-flip-flops for high-speed CMOS circuits,” IEEE Journal of Solid-State Circuits, vol. 26, no. 8, pp. 1168–1170, 1991.
[25] C. F. Lee and P. Mok, “A monolithic current-mode CMOS DC-DC converter with onchip current-sensing technique,” IEEE Journal of Solid-State Circuits, vol. 39, no. 1, pp. 3–14, 2004.
[26] Z. Lai and K. Smedley, “A general constant-frequency pulsewidth modulator and its applications,” IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications, vol. 45, no. 4, pp. 386–396, 1998.
[27] J. Zhang, H. Zeng, and T. Jiang, “A primary-side control scheme for high-power-factor LED driver with TRIAC dimming capability,” IEEE Transactions on Power Electronics, vol. 27, no. 11, pp. 4619–4629, 2012.
[28] L. Xu, H. Zeng, J. Zhang, and Z. Qian, “A primary side controlled WLED driver compatible with TRIAC dimmer,” in IEEE Applied Power Electronics Conference and Exposition (APEC), pp. 699–704, 2011.
[29] 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 Transactions on Power Electronics, vol. 27, no. 11, pp. 4602–4612, 2012.
[30] Y. Li and C. Chen, “A novel primary-side-regulation (PSR) scheme for single-stage high-power-factor AC-to-DC LED driving circuit,” IEEE Transactions on Industrial
Electronics, vol. PP, no. 99, pp. 1–1, 2012.
[31] D. Shaowu, Z. Feng, and P. Qian, “Primary side control circuit of a flyback converter for HBLED,” in IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG), pp. 339–342, 2010.
[32] H. H. Chou, Y. S. Hwang, and J. J. Chen, “An adaptive output current estimation circuit for a primary-side controlled LED driver,” IEEE Transactions on Power Electronics, vol. 28, no. 10, pp. 4811–4819, 2013.

校內：2018-08-26公開
校外：2018-08-26公開

簡易檢索 / 詳目顯示

相關論文