Voltage regulators for Microprocessors

Golden_Hawk · 发表于 2015-10-13 19:41:13

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1 Introduction ................................................................ 1
1.1 The Microprocessor Load .............................................. 1
1.2 The Microprocessor Power Supply ..................................... 9
1.2.1 Voltage Regulator (VR) Specifications ......................... 9
1.2.2 Basic Circuit Topology ........................................ 13
1.2.3 System Architecture ........................................... 15
1.2.4 Semiconductor Power Devices ................................ 17
1.2.5 Gate Driving Schemes ......................................... 22
1.2.6 Filters .......................................................... 25
1.2.7 Control Systems ............................................... 31
1.2.8 Packaging and Integration ..................................... 39
1.2.9 Commercial Voltage Regulators .............................. 41
1.2.10 Survey on Power MOSFET Models
for Circuit Simulations ........................................ 45
1.3 Objectives of the Thesis ............................................... 48
1.4 Methodological Approach ............................................. 49
1.5 Thesis Outline ......................................................... 53
References . ................................................................. 54
2 Model Level 0: Switching Behavior of Power MOSFETs ............. 67
2.1 Power MOSFET Model for Circuit Simulations ...................... 68
2.1.1 Model Structure and Implementation ......................... 69
2.1.2 Model Data Acquisition ....................................... 75
2.2 Switched Converter Test Board ....................................... 90
2.2.1 Gate Driver .................................................... 91
2.2.2 Input/Output Filters ............................................ 94
2.2.3 PCB Layout Impedance Characterization ..................... 95
2.3 Switched Converter Simulation Setup ................................. 97
2.4 Model Validation ..................................................... 101
2.5 Analysis of Switching Behavior ...................................... 112

2.5.1 Loss Breakdown ............................................... 113
2.5.2 Influence of the Body-Effect on Switching Losses ........... 122
2.5.3 Loss Analysis of a Multichip Module . ........................ 128
References . ................................................................ 131
3 Model Level 1: Piecewise Linear Analytical Switching Model ....... 133
3.1 Modeling Approach ................................................... 134
3.2 Hard-Switching Model ............................................... 141
3.2.1 Leading Edge Transition ...................................... 143
3.2.2 Falling Edge Transition ........................................ 147
3.2.3 Leading and Falling Edge Transitions Tradeoffs ............. 150
3.3 Leading Edge Switched-Node Ringing .............................. 155
3.3.1 Charging Loss .................................................. 159
3.3.2 Overvoltage Stress ............................................. 161
3.3.3 Avalanche Breakdown ......................................... 162
3.3.4 Reverse Recovery .............................................. 166
3.3.5 Gate Bounce ................................................... 169
3.4 Falling Edge Ringing Transition ..................................... 180
3.4.1 Charging Loss .................................................. 184
3.4.2 Overvoltage Stress ............................................. 188
3.4.3 Avalanche Breakdown ......................................... 190
3.5 Gate Driving .......................................................... 190
3.6 Model Validation ..................................................... 191
References . ................................................................ 195
4 Model Level 2: Power Loss Model ...................................... 197
4.1 Power MOSFET Losses .............................................. 198
4.1.1 Half-Bridge Charging Loss .................................... 198
4.1.2 Gate Charging Loss ............................................ 199
4.1.3 Load Current Hard-Switching ................................. 201
4.1.4 Load Current ON Conduction ................................. 205
4.2 Losses of Gate Drive Switches ....................................... 207
4.3 Filter Loss ............................................................. 208
4.4 PCB Loss ............................................................. 209
4.5 Model Validation ..................................................... 210
References . ................................................................ 212

Voltage Regulators for Next Generation Microprocessors-Springer (2010).rar (11.73 MB, 下载次数: 485 )