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Chapter 8 Switching Power Supplies

Feb 23, 2016

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Chapter 8 Switching Power Supplies. “Introduction to Modern Power Electronics”, 2 nd Ed., John Wiley 2010 by Andrzej M. Trzynadlowski. Buck converter. Fig. 8.1. Voltage and current waveforms in a buck converter. Fig. 8.2. - PowerPoint PPT Presentation

Introduction to Modern Power Electronics SECOND EDITION

Chapter 8

Switching Power Supplies1Introduction to Modern Power Electronics, 2nd Ed., John Wiley 2010by Andrzej M. TrzynadlowskiBuck converterChapter 82Fig. 8.1

Voltage and current waveforms in a buck converterChapter 83Fig. 8.2

Waveforms of the capacitor current and output voltage in a buck converterChapter 84Fig. 8.3

Boost converterChapter 85Fig. 8.4

Voltage and current waveforms in a boost converterChapter 86Fig. 8.5

Waveforms of the capacitor current and output voltage in a boost converterChapter 87Fig. 8.6

Impact of the inductor resistance on the voltage gain of a boost converterChapter 88Fig. 8.7

Buck-boost converterChapter 89Fig. 8.8

Voltage and current waveforms in a buck-boost converterChapter 810Fig. 8.9

Chapter 811Fig. 8.10

Chapter 812Fig. 8.11

SEPIC (a) and Zeta (b) convertersChapter 813Fig. 8.12

Voltage and current waveforms in SEPIC and Zeta convertersChapter 814Fig. 8.13

Voltage and current waveforms in SEPIC and Zeta convertersChapter 815Fig. 8.13

Vorperians switch modelChapter 816Fig. 8.14

Chapter 817Fig. 8.15

Waveforms of the output voltage and current in a buck converter: solid lines actual converter, dashed lines averaged model Chapter 818Fig. 8.16

Equivalent circuits of a transformer: (a) ideal transformer, (b) transformer with the magnetizing inductance includedChapter 819Fig. 8.17

Forward converterChapter 820Fig. 8.18

Flyback converterChapter 821Fig. 8.19

Chapter 822Fig. 8.20

Midpoint rectifierChapter 823Fig. 8.21

Push-pull converterChapter 824Fig. 8.22

Half-bridge converterChapter 825Fig. 8.23

Full-bridge converterChapter 826Fig. 8.24

Voltage-mode resonant switches: (a) L-type half-wave, (b) M-type half-wave, (c) L-type full-wave, (d) M-type full-waveChapter 827Fig. 8.25

Current-mode resonant switches: (a) L-type half-wave, (b) M-type half-wave, (c) L-type full-wave, (d) M-type full-waveChapter 828Fig. 8.26

Waveforms of the inductor current and capacitor voltage in an undamped resonant circuitChapter 829Fig. 8.27

Quasi-resonant ZVS buck converter with L-type half-wave switchChapter 830Fig. 8.28

Quasi-resonant ZCS boost converter with M-type full-wave switchChapter 831Fig. 8.29

Chapter 832

Series-loaded resonant converterChapter 833Fig. 8.30

AC equivalent circuit of the series-loaded resonant converterChapter 834Fig. 8.31

Control characteristic of the series-loaded resonant converterChapter 835Fig. 8.32

Parallel-loaded resonant converterChapter 836Fig. 8.33

AC equivalent circuit of the parallel-loaded resonant converterChapter 837Fig. 8.34

Control characteristic of the parallel-loaded resonant converterChapter 838Fig. 8.35

Series-parallel resonant converterChapter 839Fig. 8.36

Control characteristic of the series-parallel resonant converterChapter 840Fig. 8.37

Quasi-resonant ZCS buck converter with an L-type full-wave switchChapter 841Fig. 8.38

TABLE 8.1 Comparison of the ZVS and ZCS Resonant-Switch Converters______________________________________________________________________________

PropertyZCS ConvertersZVS Converters____________________________________________________________________________________________________________________Voltage gain Buck converterkf1 - kfBoost converter1/(1 - kf)1/kfBuck-boost converterkf /(1 - kf)1/kf - 1Controlconstant tONconstant tOFFvariable tOFFvariable tON Waveform of voltage across the switch squaresinusoidalWaveform of current through the switchsinusoidalsquareLoad range1 < r < 0 < r < 1______________________________________________________________________________

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