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研究生:陳韋志
研究生(外文):Wei-Chih Chen
論文名稱:具新型軟啟動電路之降壓型轉換器晶片之分析與研製
論文名稱(外文):Analysis and Design of the Buck Converter Chip with a Novel Soft-Start Circuit
指導教授:陳一通陳一通引用關係
指導教授(外文):Yie-Tone Chen
學位類別:碩士
校院名稱:國立雲林科技大學
系所名稱:電機工程系碩士班
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:2013
畢業學年度:101
語文別:中文
論文頁數:77
中文關鍵詞:欠電壓鎖定電路降壓型轉換器晶片軟啟動
外文關鍵詞:UVLObuck converter chipsoft-start
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本論文提出一個具新型軟啟動功能之降壓型轉換器晶片,並利用國家晶片系統設計中心(Chip Implementation Center, CIC)所提供之TSMC 0.35um Mixed-Signal 2P4M Polycide 3.3V / 5V製程實現電路積體化,晶片內部除了控制電路外,並加入欠電壓鎖定電路和新型軟啟動電路,加入欠電壓鎖定電路,能使電路在電源爬升到一定的電壓後,才讓電路動作,避免電源電壓未到達額定電壓前,使電路產生誤動作;而軟啟動電路的目的是避免電路在啟動時,因輸出電壓所產生的突波,造成電路的毀壞。
  本論文所設計之新型軟啟動電路為利用類比結合數位的方式,產生兩段式爬升的電壓,第一段爬升的電壓是利用基本型軟啟動方式去產生,即定電流源對一電容充電,而第二段爬升電壓則是以基本型的概念再加入一振盪器訊號做搭配,使原本定電流充電的方式,改為斷續對電容做充電的方式,使電容電壓呈現階梯式的爬升增加,最後模擬驗證所提出之電路是否相符,而模擬結果確實可改善輸出電壓突波的問題。
This thesis presents a buck converter chip with a novel soft-start circuit. It is implemented by TSMC 0.35 Mixed-Signal 2P4M Polycide 3.3V / 5V process patronized by National Chip Implementation Center (CIC). The chip adds the functions of the under voltage lockout (UVLO) circuit and new type soft-start circuit. The UVLO circuit can check whether the input voltage reaches a predetermined condition. It can avoid the malfunction of the whole circuit. And the soft-start circuit can counteract the spike of the output voltage. That can protect the circuit from the damage of the voltage spike and stretch the life of circuit.
  In this thesis, the design of the soft-start circuit utilizes the way of analog combining digital. It can produce the two-stage climbing voltage. In the first stage, the basic type of soft-start circuit is used to make the output voltage increase fast. In the second stage, the basic type of soft-start circuit works with oscillator signal. The charging current is from continuous to intermittent, and the voltage of the capacitor would rise like a ladder. The simulation results proved that the spike of output voltage can be greatly improved.
中文摘要 I
ABSTRACT II
誌謝 III
目錄 IV
表目錄 VI
圖目錄 VII
第一章 緒論 1
1.1 研究背景與目的 1
1.2 論文大綱 2
第二章 電路原理與分析 3
2.1 前言 3
2.2 多工器(Multiplexer)電路之原理與分析 4
2.3 欠電壓鎖定(Under Voltage Lock Out, UVLO)電路之原理與分析 6
2.4 軟啟動(Soft Start)電路之原理與分析 12
2.5 其它電路 19
第三章 電路實現與設計 20
3.1 前言 20
3.2 多工器電路實現與設計 21
3.3 欠電壓鎖定電路實現與設計 24
3.4 軟啟動電路實現與設計 28
3.5 電路整合 34
第四章 電路模擬與驗證 37
4.1 前言 37
4.2 原降壓型轉換器之探討 37
4.3 新型軟啟動電路之降壓型轉換器之模擬 43
4.3.1 電壓變異之模擬 57
4.3.2 溫度變異之模擬 61
4.3.3 製程變異之模擬 63
4.4 佈局後模擬(Post Layout Simulation) 65
4.5 負載變動之模擬 68
4.6 新型軟啟動電路之降壓型轉換器 70
第五章 結論與建議 71
5.1 結論 71
5.2 建議 72
參考文獻 73
附錄A 製程變異概述 77
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