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研究生:張凱棋
研究生(外文):Kai-Chi Chang
論文名稱:單週期控制之功率因數校正晶片設計
論文名稱(外文):Design of One-Cycle Control Power Factor Correction IC
指導教授:梁從主劉濱達
指導教授(外文):Tsorng-Juu LiangBin-Da Liu
學位類別:碩士
校院名稱:國立成功大學
系所名稱:電機工程學系碩博士班
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:2008
畢業學年度:96
語文別:英文
論文頁數:84
中文關鍵詞:單週期控制功率因數校正
外文關鍵詞:Power factor correctionOne-cycle control
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本論文設計一個應用於電源轉換器前級的功率因數校正晶片,採用單週期控制法則,因為僅需回授輸入電流以及輸出電壓做控制,不使用乘法器,具有設計簡單之優點。傳統電源功率因數校正晶片,需使用乘法器將輸入電壓與輸出電壓做一連接,因此功率因數校正效果,容易受到乘法器準確度的影響。在本晶片當中,透過單週期控制的重置積分器的運算,可以準確的控制開關責任週期,減少總諧波失真,並且加入一電壓準位位移電路,使晶片適用於單輸入操作電壓。為了達到更好的效能,前沿遮蔽電路以及過電壓保護,將整合於所提出的晶片中。本晶片使用0.35μm 2P4M 3.3V/5V 混合訊號互補式金氧半製程來製作。
A one-cycle control based trailing-edge boost type power factor correction IC with instant-switch-current control is proposed in this thesis. It can be utilized to control the front stage of power converter. This control IC is easy to use because only two feedback signals are needed. One is input current and another is output voltage. Multiplier is excluded in this chip. In conventional PFC control chip, the input voltage and load demand are related by using a multiplier. The performance of power factor correction is highly dependent on the precision of multiplier. By using the integrator with reset proposed in one cycle control, the duty ratio can be precisely controlled to lower the total harmonic distortion. Moreover, a level shift circuit is adopted to make this chip work with unipolar supply voltage. For the purpose of better performance, the functions such as leading edge blanking (LEB) and over voltage protection (OVP) are also integrated into the proposed chip. This chip is fabricated with 0.35μm 2P4M 3.3V/5V Mixed Signal CMOS Process.
1. Introduction 1
1.1 Background 1
1.2 Motivation 3
1.3 Organization 5
2. Fundamentals of power factor correction 6
2.1 Definition of power factor 6
2.2 Basic power stage topologies 9
2.3 Control schemes of power factor correction circuit 15
3. One-cycle control based power factor correction 21
3.1. One-cycle control technique 21
3.1.1. Concept of one-cycle control 21
3.1.2. Theory of one-cycle control 23
3.2. General pulsewidth modulator with one cycle control 25
3.3. PFC controller with general pulsewidth modulator 29
3.4 Level shifted one-cycle control PFC circuit 35
4. Circuit Design 37
4.1 The architecture of the proposed PFC controller 37
4.2 Bias circuit 39
4.2.1 Wide-swing cascode current mirror 40
4.2.2 Constant transconductance bias circuit 43
4.2.3 Constant transconductance wide-swing bias circuit 44
4.3 Operational amplifier 45
4.4 Comparator 48
4.5 Bandgap voltage reference 52
4.6 Linear regulator 55
4.7 Oscillator 59
4.8 LEB 61
4.9 UVLO and Vref detector 62
4.10 Current limit and PWM comparator 64
4.11 OVP latch 65
4.12 PWM control circuit 66
4.13 Buffer circuit 67
5. Implementation and Measurement Results 68
5.1 IC layout 68
5.2 Simulation results 70
5.2.1 Turn-on transition of the power factor corrector 71
5.2.2 Core function of one-cycle control 71
5.2.3 Steady-state operation of the power factor corrector 72
5.3 Measurement results of the proposed PFC controller 74
6. Conclusions and Future Work 79
6.1 Conclusions 79
6.2 Future works 79
References
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