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研究生：	潘祈榮 Pan, Chi-Rung
論文名稱：	多輸出昇壓轉換器之開迴路分析 Open-Loop Analysis of Multiple-Output Boost Converter
指導教授：	陳建富 Chen, Jiann-fuh 林瑞禮 Lin, Ray-lee
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：	2008
畢業學年度：	96
語文別：	英文
論文頁數：	71
中文關鍵詞：	小訊號分析、單一電感、多輸出
外文關鍵詞：	multiple outout, modeling, single inductor
相關次數：	點閱：57 下載：0
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本論文主旨係提出一具單一電感、雙組輸出之直流電壓轉換器於連續導通模式CCM (Continuous Conduction Mode)下進行開迴路小訊號分析。傳統之 DC-DC 直流轉換器僅能提供單組輸出電壓，如使用多繞組之變壓器的方式以實現具多組輸出電壓功能的電源轉換器，將無法有效地縮小體積及降低成本。故本文提出係利用單一電感之雙組輸出直流電壓轉換器，俾作能量轉換至多組輸出負載，不僅縮小電路體積，更加降低零件成本。為了分析具單一電感、雙組輸出之直流電壓轉換器的系統穩定度，將使用三端點之PWM (Pulse Width Modulation) 開關模型以建立諸開迴路小訊號等效電路模型，並據之推導電路開迴路之小訊號模型的轉移函數。本文利用數學軟體Mathcad繪出諸開迴路之小訊號轉移函數的波德圖曲線，並由實驗量測開迴路的波德圖曲線，以驗證所建立之理論模型。

This thesis presents the open-loop analysis of the boost-type single-inductor dual-output CCM DC-DC converter. The family of the single-inductor multi-output CCM DC-DC converters is presented. Conventional transformer-based multi-output DC-DC converters have been proposed to provide multiple output voltages, which, however, have the drawbacks of high cost and large volume. Therefore, the single-inductor multi-output three-terminal configuration is developed in order to reduce the component count and cost for multi-output DC-DC converters, including the boost, buck, buck-boost, and flyback DC-DC converters. In this thesis, the boost-type single-inductor dual-output CCM DC-DC converter is introduced and analyzed. Furthermore, the family of the single-inductor multi-output CCM DC-DC converters is presented.
The modeling for open-loop boost-type single-inductor dual-output continuous-conduction-mode (CCM) DC-DC converter is presented. In order to derive the transfer functions for the prediction of the system characteristics, the corresponding equivalent circuit models can be developed by utilizing the three-terminal pulse-width-modulation (PWM) switch models. In this thesis, the validation for the theoretical models and the experimental results of the boost-type single-inductor dual-output CCM DC-DC converter is presented with the curves of the Bode plots.

Chapter 1. Introduction......................................................................................................1
1. Background......................................................................................................................................1
2. Motivation........................................................................................................................................4
3. Thesis Outline.................................................................................................................................5
Chapter 2. Open-Loop Analysis of Boost-type Single-Inductor Dual-Output CCM DC-DC Converter..........................................................................................6
1. Introduction......................................................................................................................................6
2. Operational Principles....................................................................................................................7
3. Derivation of Voltage Ratios......................................................................................................10
4. Derivation of Minimum Inductance in CCM........................................................................13
5. Derivation of Output Voltage Ripples.....................................................................................14
6. Family of Single-Inductor Multi-Output CCM DC-DC Converters..............................15
6.1. Buck-Type Single-Inductor Dual-Output CCM DC-DC Converter....................18
6.2. Buck-Boost-Type Single-Inductor Dual-Output CCM DC-DC Converter......18
6.3. Flyback-Type Single-Inductor Dual-Output CCM DC-DC Converter...............19
7. Boost-Type Single-Inductor Multiple-Output CCM DC-DC Converter.......................20
8. Zero-Voltage Switching..............................................................................................................21
9. Summary.........................................................................................................................................24
Chapter 3. Modeling for Boost-Type Single-Inductor Dual-Output CCM DC-DC Converter......................................................................................................25
1. Introduction....................................................................................................................................25
2. Three-Terminal PWM Switch Model......................................................................................26
VI
3. DC and Small-Signal Equivalent Circuit Models................................................................28
3.1. DC Analysis..........................................................................................................................30
3.2. Open-Loop Line-To-Output Transfer Functions..........................................................31
3.3. Open-Loop Output Impedance Transfer Functions....................................................33
3.4. Open-Loop Control-To-Output Transfer Functions....................................................34
4. Summary.........................................................................................................................................37
Chapter 4. Implementation and Experimental Results.................................................38
1. Introduction....................................................................................................................................38
2. Implementation and Experimental Results for Boost-type Single-inductor Dual-Output CCM DC-DC Converter....................................................................................39
3. Summary.........................................................................................................................................50
CHAPTER 5. Conclusions and Future Work ................................................................51
References .........................................................................................................................53
Appendix ...........................................................................................................................53
                                    

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