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研究生： 游宗翰
Yu, Tsung-Han
論文名稱： 應用於電源供應器前級AC-DC後級DC-DC錯相脈寬調變控制器之設計
Design of an AC-DC and DC-DC Interleaved PWM Controller for Switching Power Supply
指導教授： 梁從主
Liang, Tsong-Juu
學位類別： 碩士
Master
系所名稱： 電機資訊學院 - 電機工程學系
Department of Electrical Engineering
論文出版年： 2011
畢業學年度： 99
語文別： 英文
論文頁數： 83
中文關鍵詞： 錯相控制 、單週期控制功因修正電路 、雙級控制積體電路
外文關鍵詞： Interleaved control, one-cycle control PFC, combo IC
相關次數： 點閱：86  下載：4 
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    • 本論文實現一電源供應器之具前級交流轉直流與後級直流轉直流控制時脈錯相方法。在傳統電源供應器當中，前級交流轉直流功率因數校正轉換器與後級直流轉直流轉換器為個別獨立控制，因此無法降低DC bus上電流漣波。在本論文將前級與後級控制器整合於一晶片中，前級功率因數控制電路利用單週期控制，使晶片之實現不需使用乘法器，即可達到高功率因數及低總諧波失真；後級直流轉直流控制器，採用電流模式脈寬調變控制以達到良好的電壓調節率。並利用定頻錯相時脈以控制電源供應器前級與後級之功率開關，藉此降低DC bus上之電流漣波並提高效率。最後，本晶片採用TSMC 0.25 UM CMOS HIGH VOLTAGE MIXED SIGNAL BASED BCD 1P5M SALICIDE 2.5/5/60 V 製程實現。

    In this thesis, the AC-DC and DC-DC interleaved control for power supply is realized. In conventional power supply, the front AC-DC Power factor Correction (PFC) converter and the rear DC-DC converter are controlled independently; therefore, the current ripple on the DC bus capacitor is significant. In the proposed controller, the front AC-DC PFC converter and the rear DC-DC converter are integrated into a chip. One-cycle control is used to modulate the front AC-DC PFC converter to reach high power factor and low current total harmonic distortion. The rear stage, DC-DC converter, is controlled by using current mode modulator to regulate the output voltage. Moreover, the power switches of the front stage and the rear stage converter are controlled with the constant frequency interleaved control; consequently, the current ripple on the DC bus capacitor can be reduced to achieve higher efficiency. This chip is fabricated with TSMC 0.25 UM CMOS HIGH VOLTAGE MIXED SIGNAL BASED BCD 1P5M SALICIDE 2.5/5/60 V process.

    1.Introduction 1 1.1 Background 1 1.2 Motivation 3 1.3 Organization 4 2.Introduction of switching regulator and power factor correction circuit 5 2.1 Introduction switching regulators 5 2.1.1 Non-isolated switching regulator 6 2.1.2 Isolated switching regulator 8 2.2 Power factor correction 9 2.2.1 Control schemes of power factor correction circuit 11 3.Analysis of an AC-DC and DC-DC converters with in-phase and interleaved control 17 3.1 The operation of the AC-DC and DC-DC converters 19 3.1.1 Operating analysis of in-phased control 20 3.1.2 Operating analysis of interleaved control 25 3.2 Current ripple of DC-bus capacitor 31 4.Circuit design of the proposed controller 37 4.1 The architecture 37 4.2 The control blocks 38 4.2.1 Bandgap reference 39 4.2.2 Oscillator and frequency divider 42 4.2.3 One cycle control PFC modulator 43 4.2.4 Current mode PWM control block 46 4.2.5 Buffer 49 4.3 The circuits 50 4.3.1 Bias circuit 50 4.3.2 Operational amplifier 57 4.3.3 Comparator 63 4.3.4 Positive edge triggered D flip-flop 67 4.3.5 Pulse-width generator 68 5.Layout and system simulation of the proposed controller 70 5.1 The layout 70 5.2 The simulation results 71 5.2.1 The output of the front stage and the rear stage 73 5.2.2 The current ripple of the DC-bus capacitor 73 5.2.3 Function of one-cycle control and power factor correction function 76 5.2.4 Current mode function 77 6.Conclusions and future work 79 6.1 Conclusions 79 6.2 Future works 79 References 80

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