責任週期電壓模式磁滯控制升壓型轉換器

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姓名

張岱瑋(Tai-Wei Chang) 查詢紙本館藏

畢業系所

電機工程學系

論文名稱

責任週期電壓模式磁滯控制升壓型轉換器
(Duty Cycle Voltage Mode Hysteretic Control Boost Converter)

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摘要(中)

可攜式電子產品市場是技術進步的一個背後推力。隨著裝置尺寸持續的縮小、減少矽面積，也藉由降低供應電源來減少數位電路的功耗。但是各部份的電路有自己特定的供應電壓而非單一供應電源，所以藉由電源管理單元直流對直流轉換器來滿足不同和多變的電源需求。此電源轉換電路必須是低功率消耗與高轉換效能，以增加電池的壽命與延長電池的工作時間，所以本論文提出了一個責任週期電壓模式磁滯控制升壓型穩壓器。
本論文所提出的責任週期電壓模式磁滯控制升壓型穩壓器，其原理主要利用磁滯比較器來隨時偵測輸出電壓與參考電壓的值，並且利用一固定週期脈衝或一低準位訊號控制功率電晶體開關，可以得到快速的暫態響應以及高的轉換效率。另外也針對電路啟動初期，會有電流過充的現象，而增加一緩啟動電路的方式來減少過充電流的幅度。
此責任週期電壓模式磁滯控制升壓型穩壓器的電路設計是以台灣積體電路製造股份有限公司0.35μm 3.3V互補式金氧半製程來實現，工作電壓的範圍為1.5V~3.5V，輸出電壓為4V，操作頻率為1MHz，負載電流範圍為0.05A~0.3A，最大轉換效能為94.15%，在輸出負載電流為300mA時，轉換效能仍然有85.08%。

摘要(英)

The portable electronic product market is a thrust behind significant technological progress. As the device size continues to shrink, reducing silicon area, and also by reducing the supply of power to reduce the power consumption of digital circuits. But most specific supply voltage instead of a single power supply circuit, so by the power management unit DC-DC converters to meet the different and changing power needs. These power converters must have low power consumption and high efficiency to extend the service time of portable electronics. Thus, a high efficiency duty cycle voltage mode hysteretic control boost converter is presented in this thesis.
This thesis proposes a duty cycle voltage mode hysteretic control boost converter that use the hysteresis comparator to compare output voltage and reference voltage. And also use a fixed cycle pulse and low-level signal to control power MOSFETs. It has a fast transient response and high efficiency. And during the start-up period, there was a over-current problem, so we reduce the magnitude of over-current by adding a soft-start circuit.
This proposed duty cycle voltage mode hysteretic control boost converter is implemented with TSMC 0.35μm 3.3V CMOS process. In the proposed boost converter, the operation voltage is from 1.5V to 3.5V, the output voltage is 4V, the operation frequency is 1MHz, the output current is from 0.05A to 0.3A, and the highest efficiency is 94.15%, when the output load current is 300mA, the efficiency is still 85.08%.

關鍵字(中)

★ 電壓模式
★ 磁滯控制
★ 升壓型轉換器

關鍵字(英)

★ Voltage Mode
★ Hysteretic Control
★ Boost Converter

論文目次

摘要 I
Abstract II
誌謝 IV
目錄 V
圖目錄 VII
表目錄 IX
第一章緒論 1
1.1 研究背景簡介 1
1.2 研究動機 2
1.3 論文架構 3
第二章直流轉直流穩壓器概論 4
2.1 穩壓器的種類 4
2.1.1 線性穩壓器 (Linear Regulator) 5
2.1.2 切換式電容穩壓器 (Switching Capacitance Regulator) 6
2.1.3 切換式穩壓器 (Switching Regulator) 7
2.2 切換式穩壓器分類 9
2.2.1 升壓型轉換器 (Boost Converter or Step-Up Converter) 9
2.2.2 其他類型轉換器 14
2.3 控制電路方法 16
2.3.1 脈波寬度調變 (Pulse Width Modulation, PWM) 16
2.3.2 脈波頻率調變 (Pulse Frequency Modulation, PFM) 17
2.4 切換式穩壓器規格定義與說明 19
2.4.1 輸入電壓 (Input Voltage) 19
2.4.2 輸出電壓漣波 (Output Voltage Ripple) 19
2.4.3 線性調節度 (Line Regulation) 20
2.4.4 負載調節度 (Load Regulation) 20
2.4.5 暫態響應 (Transient Response) 21
2.4.6 轉換效能 (Efficiency) 22
2.4.7 電磁干擾 (Electromagnetic Interference, EMI) 25
第三章升壓型切換式穩壓器架構 26
3.1 控制電路分類 26
3.1.1 電壓模式控制 (Voltage Mode Control) 26
3.1.2 電流模式控制 (Current Mode Control) 27
3.1.3 磁滯控制 (Hysteretic Control) 28
3.2 磁滯控制分類 30
3.2.1 電流模式磁滯控制 (Current Mode Hysteretic Control) 30
3.2.2 電壓模式磁滯控制 (Voltage Mode Hysteretic Control) 34
第四章升壓切換式穩壓器電路設計與模擬 41
4.1 責任週期電壓模式磁滯控制升壓型轉換器 41
4.1.1 比較器電路 (Comparator Circuit) 47
4.1.2 非重疊電路與驅動電路(Nonoverlap and Driver Circuit) 49
4.2 責任週期電壓模式磁滯控制升壓型轉換器模擬結果 51
4.2.1 暫態模擬 53
4.2.2 線性調節度 (Line Regulation) 54
4.2.3 負載調節度 (Load Regulation) 55
4.2.4 轉換效能 (Efficiency) 56
4.3 Post-layout simulation 59
第五章結論 63
5.1 結論 63
5.2 未來改進方向 63
參考文獻 65

參考文獻

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指導教授

魏慶隆、陳竹一
(Chin-Long Wey、Jwu-E Chen)

審核日期

2013-1-9

推文