博碩士論文 945301015 詳細資訊




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姓名 柯致專(Chuan-Chih Ke)  查詢紙本館藏   畢業系所 電機工程學系在職專班
論文名稱 應用於生醫系統植入式晶片之N-MOSFET低壓降穩壓器(LDO)設計
(Design of LDO (Low Drop-out Regulator) using N-channel MOSFET pass-element for Biomedical Implantation application)
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摘要(中) 近年來醫學科學與超大型積體電路的快速發展,使應用在人體內的植入式電子設備趨向於微小化,特別是針對高資料傳輸速率的植入式晶片,如人工視網膜輔具、人工電子耳、多通道微刺激系統等等,採用電感式耦合效應的無線方式來傳輸電源及控制晶片的訊號,可避免如線式傷口感染及電池式電源耗盡情形發生。
因採用電感式耦合效應的無線方式來傳輸電源及資料,因此傳輸電源含有載頻2MHz的交流訊號,經由全波整流器做交-直流轉換後,再利用低壓降線性穩壓器 (Low Drop-out Regulator, LDO) 達成降低電源雜訊影響之功效。
此篇論文採用N-Channel MOSFET做為LDO的傳輸元件(Pass element)且產生輸出10mA負載的3.3V及1.8V的低壓降雙穩壓系統,分別給予電極驅動單元及其他植入式電路。此雙穩壓系統採用TSMC 0.18um Mixed Mode process實現。
摘要(英) The medical science and VLSI are being developed rapidly in recent years. Application of implantable electronic devices in the human body trends to miniaturization, especially for high data transfer rate of the implanted chip, such as multi-channel micro-stimulation retinal prostheses and cochlear systems. Using wireless way with inductive coupling to transmit the signal of the power supply and control chip can prevent the situation such as the wound infection of wire-type power supply and exhausted of Battery-type power supply.
Owing to the use of inductive coupling of the wireless way to transmit power and data, the power contains the AC signal of carrier frequency of 2MHz. Through the full-wave rectifier, AC - DC converter, and then the low dropout linear regulator (Low Drop-out Regulator, LDO), one can reduce the power supply ripple significantly..
This thesis focuses on the design of dual low-dropout regulators using N-channel MOSFET. It provides regulated 1.8V and 3.3V with output loading of 10mA. The regulators are used for supplying the electrode driver and other implantable circuits. This dual-regulator system was verified in TSMC 0.18-um Mixed-mode process.
關鍵字(中) ★ 生醫系統植入式晶片
★ 低壓降穩壓器
關鍵字(英) ★ Biomedical Implantation application
★ LDO
論文目次 摘要 ..........................................................................................................................................ii
Abstract ..................................................................................................................................iii
致謝 .........................................................................................................................................iv
目錄 ..........................................................................................................................................v
圖目錄 ....................................................................................................................................vii
表目錄 .....................................................................................................................................ix
第一章 緒論 ............................................................................................................1
1.1 前言與背景 ................................................................................................................1
1.2 研究動機 ....................................................................................................................1
1.3 系統架構 ....................................................................................................................5
第二章 穩壓器基本原理........................................................................................6
2.1 穩壓器種類 ................................................................................................................6
2.1.1 線性穩壓器(Linear Regulator).....................................................................6
2.1.2 切換式穩壓器(Switching Regulator) ...........................................................6
2.2 線性穩壓器系統設計考量 ........................................................................................8
2.2.1 低壓降穩壓器基本架構 ....................................................................................8
2.2.2 傳輸元件的分類與優缺點 ................................................................................9
2.2.3 低壓降線性穩壓器規格 ..................................................................................12
第三章 雙穩壓系統架構......................................................................................16
3.1 雙穩壓架系統構探討 ..............................................................................................16
3.2 參考電壓電路 ..........................................................................................................18
3.3 切換式電容增壓直流轉換電路..............................................................................34
3.4 低壓降線性穩壓器 ..................................................................................................38
第四章 總體分析 ..................................................................................................56
4.1 電路整合分析 ..........................................................................................................56
4.2 Physical layout..........................................................................................................58
第五章 總結 ..........................................................................................................60
5.1 結論……. .................................................................................................................60
5.2 未來展望 ..................................................................................................................61
參考文獻 ................................................................................................................................62
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指導教授 薛木添(Muh-Tian Shiue) 審核日期 2012-7-30
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