請用此 Handle URI 來引用此文件：
http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/66925完整後設資料紀錄
| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 陳德玉 | |
| dc.contributor.author | Chin-Fu Nien | en |
| dc.contributor.author | 粘儆夫 | zh_TW |
| dc.date.accessioned | 2021-06-17T01:14:58Z | - |
| dc.date.available | 2020-08-24 | |
| dc.date.copyright | 2017-08-24 | |
| dc.date.issued | 2017 | |
| dc.date.submitted | 2017-08-14 | |
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| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/66925 | - |
| dc.description.abstract | 近幾年來，定導通時間(Constant On-Time, COT)控制器被廣泛地應用在直流電源轉換器上。這種類型的轉換器的特色為其無論在輕載或重載下皆有很高的效率。然而，除非使用一些特殊的電路來加快其負載暫態響應，否則此種定導通時間控制的步階響應並不是很好。
本論文描述一種適應性類定導通時間電流模式控制(Adaptive Quasi-Constant On-Time Current-Mode, AQCOTCM)之控制架構並實現在降壓型轉換器上。應用此電路架構的轉換器在負載變化時將得以取得快速的暫態響應，且其操作之切換頻率不會隨著負載改變；同時亦保留傳統的定導通時間電流模式(Constant On-Time Current-Mode, COTCM)控制的好處。 本論文將先解釋傳統COT負載響應速度較慢速的特性。接著將於論文中描述修改後之AQCOTCM架構。本文亦提出本架構之小訊號模型，此模型對於如何合適地設計轉換器之回授控制是相當需要的。此外，亦提供實驗結果以作驗證之用。本論文亦涉及將此概念延伸至多相降壓型轉換器之應用。 | zh_TW |
| dc.description.abstract | In recent years, there have been a variety of constant on-time control (COT) schemes for DC power converter applications. This class of converters features high efficiency for both the heavy load and the light load conditions. However, its step-load transient response is, by-and-large, poor unless special circuitry is used to speed up the response.
In this dissertation, an adaptive quasi-constant on time current mode (AQCOTCM) control scheme is described. Using this control scheme, a converter can achieve faster step-load response and operating frequency independence of load level while preserving the basic advantages of a conventional constant on-time current mode (COTCM) converter. In the dissertation, an explanation is given first about the basic characteristic of slow step-response of conventional COT schemes. Then modifications are described that lead to the AQCOTCM scheme. A small-signal control model is then developed that is essential for the proper design of the converter feedback control. Experimental results are shown for the verifications. Extension of the concept to multiphase buck converter application is also described | en |
| dc.description.provenance | Made available in DSpace on 2021-06-17T01:14:58Z (GMT). No. of bitstreams: 1 ntu-106-F03921028-1.pdf: 2866931 bytes, checksum: d5a3416ce199031df2115faf88e7916f (MD5) Previous issue date: 2017 | en |
| dc.description.tableofcontents | 誌謝 i
摘要 iii Abstract iv Table of Contents v List of Figures ix List of Tables xiv Chapter 1. Introduction 1 1.1 Research Background 1 1.1.1 Development Trends of CPU 1 1.1.2 Laptop Computer Power Architecture 2 1.1.3 CPU Power Requirements and Circuit Strategies to Meet the Requirements 4 1.2 Review of Commonly-Used PWM Control Modes for CPU Power 8 1.3 Issues for Circuit Employing COTCM Scheme for CPU Load 12 1.4 Dissertation Outlines 14 Chapter 2. AQCOTCM Controlled Buck Converter 15 2.1 Review of the conventional COTCM Scheme 15 2.1.1 Description of COTCM circuit 15 2.1.2 Key Features of COTCM-Controlled Buck 17 2.2 The DOTCM Scheme 20 2.2.1 Description of DOTCM circuit 20 2.2.2 Key Features of DOTCM-Controlled Buck 21 2.3 The AQCOTCM Scheme 25 2.3.1 Description of AQCOTCM circuit 25 2.3.2 Key Features of AQCOTCM-Controlled Buck 27 2.3.3 Effect of Steady-State Duty Cycle on Transient 29 Chapter 3. Small-Signal Model for AQCOTCM Controlled Buck Converters 32 3.1 Derivation and Verification of DFvc(s) (≡ iL / vc, Control-to-Inductor Current Transfer Function) 34 3.1.1 Derivation of DFvc(s) 34 3.1.2 Verification of Derived DFvc(s) 38 3.2 Derivation and Verification of FFvin(s) (≡ iL / vin, Line-to-Inductor Current Transfer Function) and FBvo(s) (≡ iL / vo, Output-to-Inductor Current Transfer Function) 40 3.2.1 Derivation of FFvin(s) 40 3.2.2 Derivation of FBvo(s) 41 3.2.3 Verification of Derived FFvin(s) and FBvo(s) 42 3.3 Derivation of Zo(s) (≡ vo / io, Output Impedance Transfer Function) 43 3.3.1 The Proposed Small-Signal Equivalent Circuit Model for Zo(s) Derivation 43 3.3.2 Derivation of Zo(s) 44 3.3.3 Verification of Derived Zo(s) 46 3.4 Derivation, Verification and Simplication of Gvc(s) (≡ vo / vc, Control-to-Output Transfer Function) and Gvv(s) (≡ vo / vin, Line-to-Output Transfer Function) 47 3.4.1 Derivation of Gvc(s) and Gvv(s) 47 3.4.2 Verification of Derived Gvc(s) and Gvv(s) 48 3.5 Simplification of Control-to-Output Transfer Function Gvc(s) 49 Chapter 4. Application of the AQCOTCM Scheme to Buck Converter with G-NAVP and Multiphase Configuration 54 4.1 Application to G-NAVP Circuit 54 4.1.1 Review of AVP Circuit 54 4.1.2 AQCOTCM with G-NAVP Feature 57 4.1.3 Small-Signal Model for Buck Converter with G-NAVP Feature Using AQCOTCM Scheme 60 4.2 Application to Multiphase Interleaved Buck Converter 66 4.2.1 Description of Multiphase AQCOTCM-Controlled Buck Converter 66 4.2.2 Small-Signal Model for Multiphase Interleaved AQCOTCM Buck Converter 68 Chapter 5. Experimental Verification 71 5.1 Experimental Platform 72 5.2 Transient Performances 72 5.2.1 Single-Step Transient Load Experiment 74 5.2.2 Dynamic Load Experiment 77 5.3 Verification of Loop-Gain Model 79 Chapter 6. Conclusions and Suggestions for Further Research 82 6.1 Conclusions 82 6.2 Suggestions for Future Research 84 References 85 Appendix A. Transfer Functions and Steady-State Switching Frequencies of Different DOTCM and AQCOTCM Variation 94 Appendix B. Derivation of Open-Loop Transfer Functions in Table 4.1 99 Appendix C. Simplification of Closed-Loop Output Impedance Zoc(s) Transfer Functions to be (4.10) and (4.11) in Buck Converter with G-NAVP Feature Using AQCOTCM Control 103 Vita 106 | |
| dc.language.iso | en | |
| dc.subject | 定導通時間電流模式 | zh_TW |
| dc.subject | 描述函數 | zh_TW |
| dc.subject | 電壓調節器 | zh_TW |
| dc.subject | 降壓型電源轉換器 | zh_TW |
| dc.subject | Buck converter | en |
| dc.subject | voltage regulator (VR) | en |
| dc.subject | constant on-time current-mode (COTCM) | en |
| dc.subject | describing function (DF) | en |
| dc.title | 新型適應性類定導通時間電流模式控制之降壓型轉換器 | zh_TW |
| dc.title | A Novel Adaptive Quasi-Constant On-Time Current-Mode Controlled Buck Converter | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 105-2 | |
| dc.description.degree | 博士 | |
| dc.contributor.oralexamcommittee | 賴炎生,陳景然,邱煌仁,陳耀銘 | |
| dc.subject.keyword | 降壓型電源轉換器,電壓調節器,定導通時間電流模式,描述函數, | zh_TW |
| dc.subject.keyword | Buck converter,voltage regulator (VR),constant on-time current-mode (COTCM),describing function (DF), | en |
| dc.relation.page | 106 | |
| dc.identifier.doi | 10.6342/NTU201703296 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2017-08-15 | |
| dc.contributor.author-college | 電機資訊學院 | zh_TW |
| dc.contributor.author-dept | 電機工程學研究所 | zh_TW |
| 顯示於系所單位： | 電機工程學系 | |
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