Fundamentals of
Power Electronics
Second Edition

Authors: R. W. Erickson and D. Maksimovic
University of Colorado, Boulder

Publisher: Springer Science+Business Media Inc.
912 pages
ISBN 0-7923-7270-0

Major Features of the Second Edition

  • New material on converter simulation using averaged switch models
  • Major revision of material on current mode control, including tables of transfer functions of basic converters
  • Major revision of material on averaged switch modeling
  • New material covering input filter design and Middlebrook's extra element theorem
  • Improved explanations of the proximity effect and MMF diagrams
  • New section on design of multiple-winding magnetics using the Kg method, including new examples
  • New material on soft switching, including active clamp snubbers, the ZVT full bridge converter, and ARCP
  • Major revision of material on low-harmonic rectifiers, to improve flow and readability. New material on critical conduction mode control
  • Major revision and simplification of the chapter on ac modeling of the discontinuous conduction mode
  • Revised problems, and a solutions manual

Detailed description of revisions

Part 1. Converters in Equilibrium

There are no substantial changes to the chapters of Part 1.

Part 2. Converter Dynamics and Control

Chapter 7 has been revised to improve the logical flow, including incorporation of the First Edition Appendix 3 into the chapter. The treatment of circuit averaging and averaged switch modeling (Section 7.4) has undergone major revision. Other changes include Fig. 7.4 and the related text, and Sections 7.2.2, 7.2.7.

Major revisions to Chapter 8 include a new introduction, a new input filter example in Section 8.1.8, and substantial changes to the buck-boost converter example of Section 8.2.1 and the material of Sections 8.3 and 8.4.

Only minor changes to Chapter 9 were made.

This is an entirely new chapter that treats how input filters modify the transfer functions of a dc-dc converter, and how to design an input filter that is adequately damped. The approach is based on Middlebrook's Extra Element Theorem (EET) of Appendix C, although it is possible to teach this chapter without use of the EET.

This chapter has been entirely revised and simplified.

Treatment of the "more accurate model" in Section 12.3 has undergone a major revision. The explanation is more straightforward, and results are summarized for the basic buck, boost, and buck-boost converters. The results of simulation are used to illustrate how current programming changes the converter transfer function. The treatment of discontinuous conduction mode in Section 12.4 has been shortened.

Part 3. Magnetics

The material on the skin and proximity effects has undergone a major revision, to better introduce the concepts of the proximity effect and MMF diagrams. The summary of operation of different magnetic devices has been moved from the filter inductor design chapter into this chapter.

A new section on design of multiple-winding inductors using the Kg method has been added, including two new examples. The summary of different magnetic devices has been moved to the previous chapter, and the material on winding area optimization (previously in the transformer design chapter) has been moved into this chapter.

Notation regarding maximum, peak, and saturation flux density has been made more clear. The section on winding area optimization has been moved to the previous chapter.

Part 4. Modern Rectifiers, Inverters, and Power System Harmonics

Information on harmonic standards has been updated.

There is little change to this chapter.

Chapter 18 is a consolidation of Chapters 17 and 18 of the First Edition. The material has been completely reorganized, to improve its flow. A new section 18.2.2 has been added. Section 18.3.3 has been expanded, to better cover critical conduction mode control. The material on three-phase rectifier topologies has been streamlined.

Part 5. Resonant Converters

The order of the sections has been changed, to improve readability. Section 19.4 has been modified, to include better explanation of resonant inverter/electronic ballast design, and two examples have been added. The material on the ZVT converter has been moved to Chapter 20.

A new Section 20.1 compares the turn-on and turn-off transitions of diode, MOSFET, and IGBT devices under the conditions of hard switching, zero-current switching, and zero-voltage switching. The material on quasi-resonant converters is unchanged. Coverage of multi-resonant and quasi-squarewave switches has been exapanded, and includes plots of switch characteristics. A new Section 20.4 has been added, which covers soft-switching techniques. Included in Section 20.4 is an expanded explanation of the ZVT full-bridge converter, new material on active-clamp snubbers, and a short treatment of the auxiliary resonant commutated pole. The material on ac modeling of ZCS quasi-resonant converters has been dropped.


This appendix is unchanged.

Appendix B is completely new. It covers SPICE simulation of converters using averaged switch models, including CCM, DCM, and current-programmed converters. This material complements the discussions of Chapters 7, 9, 11, 12, and 18. It has been placed in an appendix so that the chapter narratives are not interrupted by the details required to run a simulation program; nonetheless, the examples of this appendix are closely linked to the material covered in the chapters.

This is a completely new appendix that explains the Extra Element Theorem and includes four tutorial examples. This material can be taught in conjunction with Chapter 10 and Section 19.4, if desired.

This appendix is unchanged.

Update 12/8/00 rwe