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研究生:邵啟意
研究生(外文):Shao, Chi-Yi
論文名稱:使用新式雙相位電荷幫浦於低功率獵能器之設計
論文名稱(外文):A Low-power Energy Harvest Circuit with a New Dual-phase Charge Pump
指導教授:趙昌博
指導教授(外文):Chao, Paul C.-P.
學位類別:碩士
校院名稱:國立交通大學
系所名稱:電控工程研究所
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:2010
畢業學年度:99
語文別:英文
論文頁數:61
中文關鍵詞:充電汞獵能電路穩壓器電池充電電路功率管理電路
外文關鍵詞:charge pumpenergy harvest circuitvoltage regulatorbattery chargerpower management circuit
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本論文之目的為針對低功率之應用,採用全CMOS製程設計一新式低功率獵能電路,此電路可用來收集以及轉換前端微發電機所輸出之微小能源至電器裝置或是儲存在電池以提供日後使用。由於微發電機通常其輸出電壓微小,輸出能源不穩定且稀少,因此要在不使用外部電源之情況下,設計獵能轉換電路其困難度也相對來的高,為了克服這些問題,本論文設計一新式低功率獵能電路用以收集、轉換並且儲存這些能源。此系統接收前端微發電機所產生之低電壓能源,透過新設計之雙相位電荷幫浦電路,整流並且升壓,儲存至一過渡電容,當過渡電容達到額定電壓之後,功率管理電路傳輸此能源至低壓降穩壓器,輸出一穩定電壓提供給後端充電電路使用,此充電電路用來儲存所獵取之能源至充電電池。而本文將針對微發電機後端的獵能器,從原理了解、電路設計、H-SPICE軟體模擬修正、晶片設計、實體佈局與下線及晶片量測結果,做一完整介紹與說明,最後,設計一充電電路用來儲存電力。
The research focuses on the design of a novel energy harvest circuit with fully integrated CMOS process for low power applications. This circuit can be used to collect and transfer the energy generated from the micro-generator to power devices directly or store the energy in battery cells for later uses. It is difficult to design an energy harvest circuit without external power source because the power delivered by the micro-generator is commonly very rare, fluctuant and low in voltage amplitude. In order to tackle these problems, a new low-power energy harvest circuit is designed to collect, transfer and store the energy. This circuit receives the power generated by the micro-generator, rectifying and boosting up the output voltage of the micro-generator by a new designed dual-phase charge pump, and the boosted voltage is stored to an interface capacitor. When the boosted voltage of the novel charge pump reaches to an arbitrary voltage, the power management circuit between the output of charge pump circuit and the input of voltage regulator turns on the switching transistor automatically and supplies a regulated DC voltage to the battery charger through the voltage regulator. The battery charger is designed and proposed to transform the energy generated by the micro-generator into a rechargeable battery.
摘要 i
ABSTRACT ii
誌謝 iii
CONTENTS iv
TABLE CAPTIONS vi
FIGURE CAPTIONS vii
I. Introduction 1
1.1 Motivation 1
1.2 Research Goals and Contribution 2
1.3 Thesis Organization 4
II. Charge Pump Circuit 6
2.1 Introduction 6
2.2 The Proposed Dual Phase Charge Pump Circuit 7
2.3 Basic Concept of the Proposed Charge Pump Circuit 8
2.4 Operation Principles 10
2.3.1 Eliminating Body Effect 14
2.3.2 Reducing Threshold Voltage 16
2.5 Power Efficiency and Power Loss for Proposed Dual-phase Charge Pump Circuit 18
2.6 Simulation Results 22
III. Power Management Circuit 25
3.1 Design Issues 26
3.2 Design of a Power Management Circuit without External Power Source Assistance 26
3.3 Simulation Results 28
IV. Low Dropout Regulator 30
4.1 Basic Concept 30
4.2 Design of a Low Dropout Regulator 31
4.3 Simulation of the Low Dropout Regulator 33
V. Voltage Reference Circuit 35
5.1 Design of a Bandgap Reference Circuit 35
5.2 Simulation Results 36
VI. Battery Charger Circuit 39
6.1 Design of a Battery Charger Circuit 39
6.2 Simulation Results 40
VII. Measurement Results 43
7.1 Experiment for Dual Phase Charge Pump Circuit 45
7.2 Experiment for Power Management Circuit 53
7.3 Experiment for Combining Power Management Circuit and LDO Circuit 54
7.4 Experiment for Battery Charger Circuit 55
VIII. Conclusions and Future Works 57
8.1. Main Results of This Thesis 57
8.2. Future Works 57
References 59
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