臺灣博碩士論文加值系統

因應中、低功率多輸出之電源需求，本論文主要針對提供5伏特8安培及12伏特5安培雙組輸出之電源轉換器進行實務研製。 其利用交換式電源架構下的反馳式拓樸，完成具備100瓦輸出功率的電源轉換器。對於電性部份，本論文實做的輸出性能也將滿載平均效率實現在高於85%以上。另一方面，為了符合國際諧波標準，前級加入操作於邊界模式下之功因校正線路。其具有組成元件少，容易控制的特性。能在成本及特性上取得平衡，進一步實現中、低功率轉換器高功因的需求，在此本論文採用功因校正之專用控制IC，能將轉換器於全域電壓使用下，其滿載功因值維持在0.95以上，並於最後針對實做成品作波形及特性上的驗證與量測。

Because of the demand of mid-low watt multi outputs, this thesis proposes a switching power supply structure with fly-back topology to design and implement two-output power supply with the rating of 100 W and both 5V/8A and 12 V/5A. With respect to electricity characteristics, output performance that is fully loaded with average efficiency realizes to be above to higher than 85% in the thesis. On the other hand, in order to meet international harmonic standard , Power Factor Correction (PFC) circuit operated in boundary mode is designed with the characteristic of less components and easy control in order to realize the requirement of high power factor of mid-low power supply based on the trade off of cost and performance. Furthermore, this thesis adopts the control IC to keep full load power factor over 0.95 in all voltage range. Final measurement and verification for the proposed prototype and the satisfactory performance are justified.

中文摘要..........................................i
Abstract.........................................ii
誌謝.............................................iii
目錄.............................................iv
圖目錄...........................................vi
表目錄...........................................x
第一章 緒論...................................... 1
1.1研究動機與研究背景..............................1
1.2研究貢獻......................................4
1.3論文架構......................................4
第二章 電源供應器原理介紹..........................5
2.1簡介..........................................5
2.2非隔離型電源拓樸...............................8
2.2.1昇壓型電源轉換器.............................8
2.2.2降壓型電源轉換器.............................16
2.2.3昇-降壓型電源轉換器..........................20
2.3反馳式電源架構.................................23
第三章 功率因數校正電路............................25
3.1簡介.........................................25
3.2硬體電路實現與設計.............................34
3.2.1 功因校正用積體電路介紹......................34
3.2.2 PFC 功因校正線路配置與設計..................39
第四章 雙組輸出之電源轉換器設計....................43
4.1 PWM控制器簡介................................43
4.2設計流程.....................................54
第五章 轉換器實作驗證............................71
5.1各重要元件上的波形規格.........................74
5.2轉換器輸出波形................................81
第六章 結論與未來展望.............................91
6.1結論.........................................91
6.2未來展望......................................92
參考文獻.........................................93

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