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1 Index AC DC converters 5, 226, 234, 237 conventional 235, 238 AC DC direct converters, nonisolated , 229, 231, 233 ACLR, see adjacent channel leakage ratio adjacent channel leakage ratio (ACLR) 323, aluminum 4, 148, 153, , , 165, 167, 170, 176, 178, 181 conductive-polymer solid , 171, nonsolid 157, arbitrary waveform generator (AWG) 333 AWG, see arbitrary waveform generator bandgap reference circuits (BGR circuits) , 197 low-voltage BCM, see boundary conduction mode BGR circuits, see bandgap reference circuits bipolar junction transistors (BJTs) bipolar transistors , 195 BJTs, see bipolar junction transistors boundary conduction mode (BCM) 226, , 242 buck boost converters 44, 121, 215, 217, 236, 239, negative , positive 256, 258 buck converters 22 23, 25 26, 32, 44 45, 47 50, 54 55, , 108, , 128, 162, 164, 172, , isolated-type 68, 86 circuit 22, capacitance 6, 25, 34, 39 40, 55 56, 68, 103, , 161, , 168, 312, 359, 362 parasitic 49, 91, 96, 343, , 364 capacitors decoupling 175 large-capacitance 162, 170 line bypass 156, 169, 177, 179 multilayer 154, 168 open-circuiting 104 parasitic positive 25 snubber 68 switched CCM, see continuous conduction mode continuous conduction mode (CCM) 45, 47, 100, , , 226, , 242, 250, 261

2 368 Index control hysteretic , 282 phase-shift 92, 94 voltage-mode 7, control circuit 250, current-mode 264 control circuitry 270, 276, 285 control methods 7, 92, 214, 222, 246, 262, 266 control signals 127, 207, 228 control technology 6 7 controller current-mode PWM 133 fixed switching frequency voltage-mode PWM converter buck boost AC DC 227 direct AC DC , 237, 239, 241 flyback 64 68, 73, , 178 frequency-modulated 100 half-bridge 64, 81 86, 91, 175 on-chip voltage , , 190, 192, 194, 196, 198, 200, 202, 204, 206, 208 SIMO boost boost 265 switched-capacitor 204 time-to-voltage 239, 242 two-switch forward 73 voltage-level 188 converter circuits 49, 184 controlled full-bridge 86 flyback 64 forward 73 full-bridge 86 half-bridge 81 push pull 76 single-switch 68 single-switch forward 68 copper , 167 copper loss 138, 140, copper wire 139, 142, core circuitry 183 core loss 138, , , 146, 148 core loss characteristics 141, 144, 147 core material , 143, 146 core saturation 91 DC-cut capacitor 91 DC DC converters 5, 146, , 249, 253 isolated noninverted buck boost 213, 215, 217, 219, 221, 223, 225, 241 switching 226 DCM, see discontinuous conduction mode decoupling circuit 168, 170 dielectric constant 156, , 162, 165, 168 dielectric film 165, 167 digital CMOS circuit 352 digitalization diode, ideal 34, diode waveforms, ideal 36 discontinuous conduction mode (DCM) 45, 47, 50, 100, 105, , , , 250, 252, 261 Doherty amplifier 304, 323, 325, 327, Doherty design 324, 326 drain source capacitance 40, , 316 DRAM, see dynamic RAM dynamic RAM (DRAM) , 187, 203

3 Index 369 EA, see error amplifier electric vehicles 2, 4, 21 electrical steel sheets energy dissipation 353, energy loss 18, 32, 35, 39 40, 138, 337, , 344, 347, 349, , 358, energy transmission equivalent series capacitance (ESC) 161 equivalent series resistance (ESR) 26, 49 51, 53 54, 59, 155, 161 error amplifier (EA) 53, 56 59, , , 239, 262 ESC, see equivalent series capacitance ESR, see equivalent series resistance film capacitors 4, 156, 158, , 181 foil 158, metallized 158, forward converters 64, 68 69, 71 76, 80 81, 84, 91, , 178 single-switch 68 69, 71 73, full-bridge converters 64, 86 87, 89, phase-shift-controlled 92, 94, 97 PWM-controlled 86 87, 90 hysteresis control 7, 262, hysteresis loops hysteretic PWM generator inductance 22, 28, 41, 51, 55, , 146, 151, 155, 167, 225 interconnection magnetizing mutual 296, 298 parasitic series 32, 40 inductive coupling 295 inductive-coupling links inductor off-chip 186, 246, 251 short-circuiting 104 switching 281 integrated circuits 20 21, 153 iron loss 140, 145, 147 KCL, see Kirchhoff s current law Kirchhoff s current law (KCL) 13, , , 118 Kirchhoff s voltage law (KVL) 13, , , 118 KVL, see Kirchhoff s voltage law Laplace transform 110, 112, , 128, 130 large-scale integration (LSI) 5, 55, 154, , 187, , 197, 294 LEDs, see light-emitting diodes light-emitting diodes (LEDs) 21 loading effects 288, 290 LSI, see large-scale integration LSIs logic 183, 186, 197, 200, 203 memory , 197, 200, 203 magnetic flux 102, 135, , 142, 146, , 296, 299, 345 magnetic flux density , 140, , 146, , 296, 298

4 370 Index magnetic flux leakage , 148 magnetic flux linkage 22, 24 magnetic reluctance 136, 138 magnetizing inductor 64 65, 67, 71 73, 75 76, 79 81, 83, 85 87, 89, 91 metal oxide semiconductor fieldeffect transistor (MOSFET) 2, 6, 20, 32, 34 40, 49, 64, 86, 174, 190, 205, , 222, 359 mixed-control method 214, 216 mixed-signal approach 333 MLCCs, see multilayer ceramic capacitors MOS transistor 6 MOSFET, see metal oxide semiconductor field-effect transistor MOSFET turn-on transition multilayer ceramic capacitors (MLCCs) 157, , n-channel metal oxide semiconductor field-effect transistor (nmosfets) 187, 202, n-channel metal oxide semiconductor (NMOS) 273, , 282, 284, NMOS, see n-channel metal oxide semiconductor nmosfets, see n-channel metal oxide semiconductor fieldeffect transistor on-chip inductors 296, 298 on-chip voltage conversion , 187 output-smoothing capacitor 65, 67, 70, 72 73, 78, 80, 83, 87 p-channel metal oxide semiconductor (PMOS) 273, , 282, 284, p-channel MOSFET (pmosfet) 201, 203 PCB, see printed circuit board PCCM, see pseudo-continuous conduction mode PFC, see power factor correction PFC circuits 32, , 226, 239, 242 PFM, see pulse frequency modulation PMOS, see p-channel metal oxide semiconductor pmosfet, see p-channel MOSFET power circuits 7, 168 power conversion efficiency 198, 200, , 207 power delivery, wireless interchip power electronics 1 2, 21 power electronics circuit design 21 power factor correction (PFC) 22, 46, 167, 176, 226 power factor correction circuit , 237, 239, 241 power supplies ideal switching 125 low-voltage 55 normal switching 224 switching-mode 3 power supply circuit 1 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30

5 Index 371 printed circuit board (PCB) 154, 246, pseudo-continuous conduction mode (PCCM) 246, 250, 261 pulse frequency modulation (PFM) 7, 218 pulse width modulation (PWM) 7, 53, 86, 125, , 133, 180, 214, 216, , 240, 262 PWM, see pulse width modulation PWM generator radio frequency 8, 311 regulators, switched-capacitor SAR, see successive approximation register SIMO converter, see singleinductor multiple-output converter basic SIMO DC DC converter 246, , 253, 255, 257, 259, 261, 266 single-inductor multi-output DC DC converter single-inductor multipleoutput converter (SIMO converter) 246, , single-switch forward converter, ideal 68 SMD, see surface-mount device soft magnetic materials solid electrolytic capacitor 158, 163 steady-state analysis 66, 72, 80, 99 successive approximation register (SAR) surface-mount device (SMD) 158, 168 switches freewheel 261 low-side MOSFET 174 MOSFET 220 switching converters, pulse-widthmodulated 100 switching losses 15 17, 22, 28, 32, 34, 36 37, 39, 41, 91, 95, 97, 220, 222, 224, 338 switching-mode operations, highefficiency 304 switching-mode power supplies 3 4, 7 8, switching noise 18 switching power converters 43 switching power supply 214 switching power supply circuits 338 switching regulator 5, , tantalum oxide 156, 162 THD, see total harmonic distortion thin-film magnetic material 296, total harmonic distortion (THD) 32 transfer function 53 54, 56, 58, 110, , 119, , 129, 134 open-loop 49, 53 54, transformer core saturation 72, 76, 86 transformer-equivalent circuit 26, 64, 68 69, 73 74, 76, 81, 86 87

6 372 Index transformer leakage inductances 40, 67 transformer leakage inductor 67 transformer windings 80, 83, 90 94, 148 transistors 6, 41, 153, 192, 273, , 290, 325 turn-off transition 22, 35 36, turn-on transition 34 35, voltage conversion efficiency 220 voltage conversion equation voltage conversion ratio 45 46, 66, 72, 80, 83 84, 91, 94, 99, 109, 199, , 227, 231 voltage converters on-chip 184, 187 voltage down-converters , 201 voltage inversion 208 voltage inverters 203, 208 voltage-mode PWM control 125, 127 voltage regulator 49, 53 voltage swing 307, 325, 330 voltage up-conversion 188 voltage up-converters 184, 186, 188, , on-chip 189, 203, 206 wafer-level testing 294, 296 wireless power delivery , 300 ZCS, see zero-current switching zero-current switching (ZCS) 18 19, 344, 346 zero-voltage switching (ZVS) 18 19, 91, 95 97, 341 ZVS, see zero-voltage switching

7 This book presents basic switching converters and control schemes, isolated converters, application circuits, passive parts which are used in switching converters, wireless power delivery, switchedcapacitor power supply circuits, high-power GaN HEMT for cellular base station and so on. It widely explains power management from its basics to applications, thus facilitating understanding. Masashi Ochiai Sanken Electric Co., Ltd., Japan This unique handbook describes a wide variety of power converters, from front-end to point-of-load, and integrated power circuits on a silicon chip. It has the potential to inspire research and development groups and students in the world. Dr. Kenichi Onda Nippon Chemi-Con Corp., Japan I think the authors have explained circuits and their waveforms and formulas in this book clearly and accurately. The book has enough basic information to design a switching converter. Prof. Fujio Kurokawa Nagasaki University, Japan This book presents both the basic characteristics and the application aspects of switching power converters. It is very useful for many engineers and students related to developing high-efficiency power converters for energy saving. Prof. Emeritus Tamotsu Ninomiya Kyushu University, Japan This comprehensive book focuses on DC DC switching power supply circuits, which are receiving attention as a key technology in green IT, especially in the automotive and consumer electronics industries. It covers buck converters, isolated converters, PFC converters, their modeling and analysis, several control methods, passive components, and their several recent applications (onchip power supplies, DC DC and AC DC converter applications, single-inductor multi-output DC DC converters, energy harvest applications, wireless power delivery, charge pump circuits, and power amplifiers). The contents are well balanced as the authors are from both academia and industry and include pioneers and inventors of hysteretic PWM control. Haruo Kobayashi is a professor in the Division of Electronics and Informatics, Gunma University, Japan. He received his B.S. and M.S. in information physics from the University of Tokyo in 1980 and 1982, respectively, an M.S. in electrical engineering from the University of California, Los Angeles, in 1989, and a Ph.D. in electrical engineering from Waseda University in His research interests include analog/ mixed-signal integrated circuit design and testing, signal-processing algorithms, charge pump circuits and DC DC converters. Takashi Nabeshima is a professor in the Department of Electric and Electronic Engineering, Oita University, Japan. He received his B.S. and M.S. in electronic engineering from Kumamoto University, Japan, in 1975 and 1977, respectively, and Dr. Eng. from Kyushu University, Japan, in He has published more than 70 technical papers in IEICE Transactions and IEEE Transactions and participated in various international conferences in the field of power conversion. His research interests include switching converter and control technique. V435 ISBN

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