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研究生:林學世
研究生(外文):Shu-Shi Lin
論文名稱:一次側控制返馳式轉換器
論文名稱(外文):A Primary Side Control Flyback Converter
指導教授:陳秋麟陳秋麟引用關係
指導教授(外文):Chern-Lin Chen
學位類別:碩士
校院名稱:國立臺灣大學
系所名稱:電子工程學研究所
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2004
畢業學年度:92
語文別:中文
論文頁數:73
中文關鍵詞:返馳式轉換器一次側控制
外文關鍵詞:Flyback ConverterPrimary Side Control
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返馳式轉換器因具有架構簡單、生產成本低廉,廣泛地應用在低必v電源供應市場上。一般返馳式轉換器回授電路必須使用昂貴的光耦和器與TL431,以達成電器隔離之弁遄A如此一來不僅增加了電路成本,也增加了電路體積與必v消耗。一次側控制返磁式轉換器藉由偵測輔助繞組電壓,完成穩定輸出電壓之弁遄A因偵測輔助繞組與PWM控制IC皆位於一次側,避免了使用到昂貴的元件,對整體返馳式轉換器成本、效率、體積都有助益。
For low power supply applications, flyback converter has been adopted widely because of its simple structure and low cost. In traditional flyback converter, feedback circuit is typically done with the assistance of expensive opto-coupler and TL431, to preserve electrical isolation. However it is not only increases cost but also adds size and power consumption. The primary side control flyback converter senses the voltage of auxiliary winding to regulate output voltage. It can void using expensive element of opto-coupler and TL431. Therefore primary side control flyback converter reduces the device cost and the size, and improve the efficiency of the power supply.
第一章 緒論
1.1 研究背景與動機……………………1
1.2 內容簡介……………………………3
第二章 返馳式轉換器
2.1 工作原理……………………………4
2.2 箝位電路……………………………9
2.3 輸出濾波電路………………………15
第三章 控制弁鄐雯?
3.1 控制邏輯……………………………17
3.2 斜率補償……………………………20
3.3 領先阻隔與必v限制………………23
3.4 降頻模式……………………………28
第四章 一次側控制返馳式轉換器設計
4.1規格參數制定………………………………33
4.2返馳式轉換器設計…………………………35
4.3一次側回授電路分析………………………43
第五章 實驗結果與討論
5.1電路主要波形………………………………60
5.2負載調節力…………………………………62
5.3最小工作週期………………………………65
5.4開關電晶體最大跨壓………………………67

第六章 結論
6.1 總結…………………………………69
6.2 未來研究方向………………………70
參考文獻……………………………………………72
[1]梁適安, “高頻交換式電源供應器設計,”全華出版社, 中華民國九十一年二月.
[2]A. I. Pressman, “Switching Power Supply Design,” McGraw-hill, 1991.
[3]G. C. Chryssis, “High Frequency Switching Power Supplies: Theory & Design,” McGraw-Hill, 1989.
[4]R. Watson, F.C. Lee and G.C. Hua, “Utilization of an active-clamp circuit to achieve soft switching in flyback converters,” IEEE Trans. Power Electron, vol. 11, no. 1, pp. 162 - 169, Jan. 1996.
[5]C. T. Choi, C. K. Li and S. K. Kok, “Modeling of an active clamp discontinuous conduction mode flyback converter under variation of operating conditions,” IEEE Trans. Power Electron, vol. 2, no. 2, pp. 730 - 733,July 1999.
[6]C. T. Choi, C. K. Li and S. K. Kok, “Control of an active clamp discontinuous conduction mode flyback converter,” IEEE Trans. Power Electron, vol. 2, no. 2, pp. 1120 - 1123, July 1999.
[7]D. Dalal, “Design Considerations for Active Clamp and Reset Technique,” Unitrode Power Supply Design Seminar, SEM-1200, pp. A4-1-A4-23.
[8]T. Tolle and T. Duerbaum, “Modeling of ZVS Transitions in Asymmetrical Half-Bridge PWM Converters,” IEEE Trans. Power Electron, vol. 1, no. 1, pp. 308-313,June 2001.
[9]G. Hua, C. S. Leu and F. C. Y. Lee, “Novel Zero-Voltage-Transition PWM Converters, ” IEEE Trans. Power Electron, vol. 9, no. 2, pp. 213- 219, March 1994.
[10]吳炎培, “電流回饋控制之轉換式電源供應器,” 行政院國家科學委員會專題研究計畫成果報告, 中華民國七十七年七月.
[11]Sandri, Paolo, Borghi, Rigazio and Luca, "DC-to-DC converter functioning in a pulse slipping mode with low power consumption and PWM inhibit," US patent 5,745,352, Api. 1998, SGS- Thompson.
[12]Culpepper, Suzuki and Hidehiko, "Switching DC-to-DC converter with discontinuous pulse skipping and continuous operating mode without external sense resistor," US patent 6,396,252, May 2002, National Semiconductor.
[13]Majid, Naveed, Mobers, Tom, Seinen and G. R. Erwin, "Low power stand-by for switched-mode power supply circuit with burst mode operation," US patent 5,812,383, Sep. 1998, Philips Electronics.
[14]T. Yang, "PWM controller having off-time modulation for power converter," US patent 6,545,882, Aug 2001, System General Corp.
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