Computer-Aided Analysis and Design of Switch-Mode Power Supplies

Lee

• Publisher: CRC Press
• Year: 2017
• Topic: Technology & Engineering
• eBook ISBN:
  9781351458658
• Subtopic: Computer Science General
• Index: Technology & Engineering

This comprehensive reference/text explains the development and principles of operation, modelling, and analysis of switch-mode power supplies (SMPS)-highlighting conversion efficiency, size, and steady state/transient regulation characteristics.;Covering the practical design techniques of SMPS,this book - reveals how to develop specific models of circuits and components for simulation and design purposes; explains both the computer simulation of the switching behaviours of dc-to-dc converters and the modelling of linear and nonlinear circuit components; deals with the modelling and simulation of the low-frequency behaviours of converters (including current-controlled converters and converters with multiple outputs) and regulators; describes computer-aided design (CAD) techniques as applied to converters and regulators; introduces the principles and design of quasi-resonant and resonant converters; provides details on SPICE, a circuit simulator package used to calculate electrical circuit behaviour.;Containing over 1000 helpful drawings, equations, and tables, this is a valuable reference for circuit design, electrical, and electronics engineers, and serves as an excellent text for upper-level undergraduate and graduate students in these disciplines.

1
Switch-Mode Power Supply Fundamentals

The so-called switch-mode power supply (SMPS) is a class of power supply that makes use of electronic switches to process electric power. Since ideal switches do not dissipate power, the SMPS can be designed to have a high efficiency. When a high switching frequency is used, the size of the transformers and filtering circuits in the SMPS can also be minimized. Because of these overwhelming advantages, the SMPS has today become so common that its linear counterpart is now used only in low-power circuits or in circuits where interference must be kept to an absolute minimum.

As an introduction to the subject of computer-aided analysis and design of the SMPS, the specific aims of this first chapter are:

1. To provide a brief outline of the development of the SMPS
2. To describe the switching behaviors of switches, inductors, and capacitors in the SMPS
3. To ide.jpgy the role of computer-aided design (CAD) tools

The chapter explains the fundamental principles of dc-to-dc converters, which are the basic power conversion engines used in the SMPS. An understanding of such principles is essential for the modeling, analysis, and CAD work that follows in subsequent chapters.

To help introduce the essential concepts directly, effectively, and without unnecessary complications, the explanation in this chapter is based on idealized circuit elements, such as lossless inductors and capacitors and perfect switches with zero turn-on resistance and zero switching time.

The power converter circuits to be studied in this chapter include the buck converter, buck-boost converter, boost converter, Ćuk converter, and electronic transformers. Converters with transformer isolation will be covered in Chapter 4, after the modeling and analysis of simple converters in Chapters 2 and 3.

1.1 The Development of Switch-Mode Power Supplies

This section contains a brief history of the development of converter circuits, as well as modeling, analysis, and design techniques. The objective is to provide readers with a better perspective of the subject matter and to enable them to trace the important literature related to this field of study. However, readers who are not interested in the history may proceed to Section 1.2.

1.1.1 The Development of Power Converters

The heart of a SMPS is a dc-to-dc converter, which accepts a dc input and produces a controlled dc output. Semiconductor dc-to-dc converters have appeared in practical use since the 1960s. [10,41,43,44]. The three basic types are the buck converter, the boost converter, and the buck-boost converter, the circuits of which are shown in Fig. 1.1. (Note that a buck converter with an isolation transformer is called a forward converter, and a buck-boost converter with an isolation transformer is known as a flyback converter. The transformer-coupled push-pull converter, half-bridge converter, and full-bridge converter, which will be studied in Cha...

Table of contents

• Cover
• Half Title
• Title Page
• Copyright Page
• Dedication
• Table of Contents
• Preface
• 1 Switch-Mode Power Supply Fundamentals
• 2 Low-Frequency Behavior Models of Square-Wave Power Converters
• 3 Analysis of Square-Wave Power Converters
• 4 Power Converters with Transformer Isolation
• 5 Voltage-Mode and Current-Mode-Controlled Switching Regulators
• 6 Cycle-by-Cycle Simulation of Power Converter Circuits
• 7 Simulation of Low-Frequency Behaviors of Converters
• 8 Computer-Aided Design of Converters and Regulators
• 9 High-Frequency Quαsi-Resonαnt and Resonant Converters
• 10 Practical Techniques of Design of Swi†ch-Mode Power Supplies
• APPENDIX A: An Introduction to Spice
• APPENDIX B: Summary of Commonly Used SPICE Statements
• APPENDIX C: Nonconvergence and Related Problems in SPICE
• APPENDIX D: About PSpice
• References and Bibliography
• Symbols
• Index