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研究生:田鈞元
研究生(外文):Chun-Yuan Tien
論文名稱:低瞬態互調失真功率放大器與降壓型直流對直流轉換器之驗證研習
論文名稱(外文):Studies on Low TIM Power Amplifier and Buck DC/DC Regulator Verification Methodology
指導教授:吳紹懋
學位類別:碩士
校院名稱:元智大學
系所名稱:電機工程學系
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:2008
畢業學年度:97
語文別:英文
論文頁數:107
中文關鍵詞:功率擴大器直流對直流轉換器
外文關鍵詞:power amplifierDC/DC regulator
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本論文是有關低瞬態互調失真功率放大器與降壓型直流對直流轉換器的實做以及測試方法做以研習與探討。低瞬態互調失真功率放大器是利用放大器之回授技巧,控制電晶體工作點,來增加功率放大器之線性度,使之能處理快速的瞬態訊號,而不會造成失真、削波等現象。本論文整理出詳細的設計流程,SPICE模擬方式,以及測試要點與結果。在直流對直流轉換器驗證驗證方法中,本論文整理出一般業界最常使用之驗證方法,並加以分析及說明,以及從設計者的觀點,來說明如何驗證與設計一個能符合各項電氣規格的直流對直流轉換器。
In this thesis, we studied the implementation and verification methodologies for low TIM power amplifier & bulk DC/DC regulator. For low TIM power amplifiers, multi-path feedback method and the transistor operation point controls are employed to increase the linearity such that the amplifier can process a fast transient signal without distortion and clipping. In the first part of the thesis, we survey the detail design procedures, SPICE simulation settings, test requirements, and the results for the low TIM power amplifier. As the second part, the verification methodologies for bulk DC/DC regulator were surveyed. We illustrated the most universal verification methods in the industry and explained the methods of design which can make the DC/DC converters meet the electrical specifications.
Chapter 1: Audio System Introduction…………………………………………1
1.1: Introduction……………………………………………………………1
1.2: Analog Audio System…………………………………………………3
1.3: Digital Audio System…………………………………………………4
1.3.1: Overview of digital audio………………………………………5
1.4: Listing Environment…………………………………………………7
Chapter 2: Audio Amplifier…………………………………………9
2.1: Pre Amplifier………………………………………………………9
2.2: Power Amplifier………………………………………………………10
2.2.1: Class A…………………………………………………………10
2.2.2: Class B…………………………………………………………11
2.2.3: Class AB………………………………………………………12
2.3: High Efficiency Class D Power AMP………………………………13
2.3.1: Introduction of Class D AMP………………………………13
2.3.2: Class D Power AMP Principle………………………………14
2.3.3: Half Bridge Design……………………………………………15
2.3.4: Gate Driving……………………………………………………16
2.3.5: Output Filter Design…………………………………………...17
2.4: The Efficiency of Class D Amplifier…………………………………18
2.5: Distortion of Power Amplifier…………………………………………20
Chapter 3: Low TIM Audio Power Amplifier Analysis………………………22
3.1: Principle of Low TIM AMP…………………………………………22
3.2: Schematic Analysis……………………………………………………24
3.2.1: Input Stage……………………………………………………24
3.2.2: Second Stage……………………………………………………26
3.2.3: Output Stage……………………………………………………29
3.2.4: Feedback……………………………………………………30
3.2.5: Power Supply……………………………………………………31
3.3: Function Calculation………………………………………………32
3.3.1: DC Bias Calculation……………………………………………32
3.3.2: Small Signal Calculation………………………………………33
3.3.3: Frequency Response…………………………………………35
Chapter 4: Low TIM Audio Power AMP Simulation and PCB Design…………37
4.1 DC Gain………………………………………………………………..38
4.2 Stability………………………………………………………………39
4.3 PSRR……………………………………………………………………42
4.4 Slew Rate…………………………………………………………44
4.5 SNR…………………………………………………………………45
4.6 IM & TIM…………………………………………………………47
4.7: Altium DXP2004 Design Introduction…………………50
Chapter 5: Amplifier Test and Measurement………………………………53
5.1 Sine wave test………………………………………………………54
5.2 Sensitivity…………………………………………………………56
5.3 Slew Rate……………………………………………………………57
5.4 Power Test………………………………………………………59
5.5 Stability and gain/phase……………………………………61
5.6 SNR…………………………………………………………………65
5.7 IM and TIM Test…………………………………………………66
5.8 Input impedance…………………………………………………71
5.9 Output impedance…………………………………………………73
Chapter 6: Conclusion and Future Work……………………………………76
6.1 Conclusion……………………………………………………76
6.2 Future Work………………………………………………………76
Chapter 7: Appendix: Bulk DC/DC converter test method……………………78
7.1 Static Output Voltage Measurement…………………………………80
7.2 Ripple and Noise Measurement……………………………………83
7.3 Output Voltage with Dynamic Load…………………………………84
7.4 Efficiency Measurement……………………………………………86
7.5 Overshoot & Undershoot at Turn On & Turn Off……………………89
7.6 Over Current / Short Circuit Protection Test…………………………92
7.7 Over Voltage Protection………………………………………………96
7.8 Temperature Rising Test……………………………………………97
7.9 Power MOSFETs Gate/Switching Nodes Waveform…………………97
7.10 Duty Cycle Jitter……………………………………………………101
7.11 EMI Interfering Prevention………………………………………103
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[2] Tony, Leach 150 Transistor Amplifier Introduction, DIYZONE 2005/10/06.
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[8] Pernici et al, A CMOS Low-Distortion Amplifier with Double-Nested Miller Compensation, IEEE J. Solid-State Circuit, p. 758, July 1993.
[9] Moore, An Introduction To The Psychology of Hearing, Academic Press,
pp. 48-50, 1982.
[10] 楊丕全, 擴大器原理與制作一 前置放大器, 全華科技, 1994.
[11] 楊丕全, 擴大器原理與制作二 音質控制器. 全華科技, 1998.
[12] http://www.diyaudio.com/
[13] Ned Mohan, Tore M. Undeland, Power Electronics Converters, Applications, and Design 3th Edition, John Wiley $ Sons, INC, 1995.
[14] B. K. Bose, Power Electronics- A Technology Review, Proceedings of the IEEE, Vol. 80, No. 8, August 1992.
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[16] 梁適安, 交換式電源供給器之理論與實務設計, 全華科技, 1994.
[17] Jon Klein, Shoot through in Synchronous Buck Converters, Fairchild Semiconductor, 2004.
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[19] Loss Recovery, IEEE Trans. O Power Electronics, 1994.
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