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研究生：	陳碩甫 Shuo-Fu Chen
論文名稱：	遲滯脈波寬度調變控制器於直流-直流降壓轉換器之分析 Analysis of a DC-DC Buck Converter with a Hysteretic PWM Controller
指導教授：	呂藝光 Leu, Yih-Guang
學位類別：	碩士 Master
系所名稱：	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：	中文
論文頁數：	48
中文關鍵詞：	交換式電源、脈衝寬度調變、遲滯控制器、降壓轉換器
英文關鍵詞：	switched mode power supply, pulse width modulation, hysteretic controller, buck converter
論文種類：	學術論文
相關次數：	點閱：128 下載：4
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本論文著重在直流-直流降壓轉換器拓樸的效率和負載暫態響應。為了得到最
佳的直流-直流降壓轉換器之效率於可攜帶式電子產品，因此，電路設計概念主
要以低成本、低複雜性和高效率為系統構想。
以ESR、RfCf 兩種電路拓樸為基礎，進而提出混合的電路拓樸為混合型，也
稱之混合型。推導數學方程式去分析直流-直流降壓轉換器之效率，並且使用模
擬、實驗去驗證推導結果，最後根據實驗結果的分析去歸納結論和建立規則，因
此設計人員可以了解到三種電路拓樸的各自缺點與優點。

The purpose of this thesis is to investigate efficiency and load transient response
on three kinds of DC to DC buck converter topology. It's for getting the best efficiency
of DC to DC buck converters for portable electronic products. Therefore, the concept
of circuit design constitutes a low cost, low complexity and high efficiency system.
Based on two circuit topologies which are ESR and RfCf, the proposed mixed
circuit scheme is ESR+RfCf, also called hybrid. We derive the mathematical formula
for DC to DC buck converter to analyze efficiency, and also use the simulation and
experiments to prove analysis results. According to the analysis of all experimental
results, the next step is to draw the conclusion and make the rule. As a result, designers
understand disadvantages and advantages of three circuit topologies.

摘要 ................................................................ i
ABSTRACT ........................................................ ii
目 錄 ........................................................... iv
圖 目 錄 ........................................................... vi
表 目 錄 ......................................................... viii
第一章 緒 論 .................................................... 1
1 研究背景與動機 .............................................................................................. 1
2 研究方法 .......................................................................................................... 3
3 章節簡述 .......................................................................................................... 5
第二章 直流-直流轉換器的基本原理 ................................ 6
1 降壓/升壓/降-升壓 拓樸架構 ...................................................................... 6
2 降壓轉換器基本工作原理 .............................................................................. 7
2.1 降壓轉換器各式拓樸 ............................................................................ 8
2.2 降壓轉換器波形 .................................................................................... 8
3 效率 .................................................................................................................. 9
3.1 整體效率 .............................................................................................. 10
3.2 元件功率損耗 ....................................................................................... 11
3.2.1 切換功率損失 .......................................................................... 12
3.2.2 傳導功率損失 .......................................................................... 14
3.2.3 元件功率損耗總結 .................................................................. 15
第三章 遲滯降壓控制器 .................................................................................... 16
1 電壓/電流/遲滯控制基本原理與架構 ......................................................... 16
1.1 電壓模式控制 ....................................................................................... 16
1.2 電流模式控制 ....................................................................................... 17
1.3 遲滯模式控制 ....................................................................................... 17
2 ESR 遲滯降壓控制器電路 ............................................................................. 19
3 RfCf 遲滯降壓控制器電路 ............................................................................. 20
4 混合型遲滯降壓控制器電路 ........................................................................ 21
第四章 實驗與分析 .............................................. 22
1 實驗和模擬設定 ............................................................................................ 22
2 效率 ................................................................................................................ 23
2.1 ESR 遲滯降壓控制器電路 ................................................................... 23
2.2.1 ESR=150mΩ ............................................................................ 24
2.2.2 ESR=400mΩ ............................................................................ 25
2.2.3 ESR=570mΩ ............................................................................ 26
2.2.4 三組不同ESR 值實驗的效率 ................................................ 28
2.2 RfCf 遲滯降壓控制器電路 ................................................................... 28
2.3 混合型遲滯降壓控制器電路 .............................................................. 34
2.4 效率總結 .............................................................................................. 36
3 負載暫態響應 ................................................................................................ 37
3.1 ESR 遲滯降壓控制器電路 ................................................................... 37
3.2 RfCf 遲滯降壓控制器電路 ................................................................... 38
3.3 混合型遲滯降壓控制器電路 .............................................................. 39
3.4 負載暫態響應總結 ............................................................................... 40
第五章 研究結論與未來展望 ...................................... 42
1 研究結論 ........................................................................................................ 42
1.1 切換頻率 ............................................................................................... 42
1.2 效率 ....................................................................................................... 42
1.3 負載暫態響應 ...................................................................................... 42
2 未來展望 ........................................................................................................ 43
參考文獻 ........................................................... 44

                                

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