Power Supply Cookbook

Marty Brown9780750673297, 0-7506-7329-X

Power Supply Cookbook, Second Edition provides an easy-to-follow, step-by-step design framework for a wide variety of power supplies. With this book, anyone with a basic knowledge of electronics can create a very complicated power supply design in less than one day. With the common industry design approaches presented in each section, this unique book allows the reader to design linear, switching, and quasi-resonant switching power supplies in an organized fashion. Formerly complicated design topics such as magnetics, feedback loop compensation design, and EMI/RFI control are all described in simple language and design steps. This book also details easy-to-modify design examples that provide the reader with a design template useful for creating a variety of power supplies.This newly revised edition is a practical, “start-to-finish” design reference. It is organized to allow both seasoned and inexperienced engineers to quickly find and apply the information they need. Features of the new edition include updated information on the design of the output stages, selecting the controller IC, and other functions associated with power supplies, such as: switching power supply control, synchronization of the power supply to an external source, input low voltage inhibitors, loss of power signals, output voltage shut-down, major current loops, and paralleling filter capacitors. It also offers coverage of waveshaping techniques, major loss reduction techniques, snubbers, and quasi-resonant converters.* Guides engineers through a step-by-step design framework for a wide variety of power supplies, many of which can be designed in less than one day* Provides easy-to-understand information about often complicated topics, making power supply design a much more accessible and enjoyable process”

---

Table of contents :
Power Supply Cookbook……Page 1
Contents……Page 4
Preface……Page 9
Introduction……Page 11
1.1 Getting Started. This Journey Starts with the First Question……Page 13
1.2 Power System Organization……Page 14
1.3 Selecting the Appropriate Power Supply Technology……Page 15
1.4 Developing the Power System Design Specification……Page 17
1.5 A Generalized Design Approach to Power Supplies: Introducing the Building- block Approach to Power Supply Design……Page 20
1.7 Basic Test Equipment Needed……Page 21
2.1 Basic Linear Regulator Operation……Page 23
2.2 General Linear Regulator Considerations……Page 24
2.3 Linear Power Supply Design Examples……Page 26
3.1 The Fundamentals of PWM Switching Power Supplies……Page 33
3.2 The Building-block Approach to PWM Switching Power Supply Design……Page 38
3.3 Which Topology of PWM Switching Power Supply to Use?……Page 40
3.4 The Black Box Considerations for Switching Power Supplies……Page 46
3.5 Design of the Magnetic Elements……Page 49
3.6 The Design of the Output Stages……Page 68
3.7 Designing the Power Switch and Driver Section……Page 75
3.8 Selecting the Controller IC……Page 82
3.9 Designing the Voltage Feedback Circuit……Page 87
3.10 Start-up and IC Bias Circuit Designs……Page 92
3.11 Output Protection Schemes……Page 94
3.12 Designing the Input Rectifier/Filter Section……Page 96
3.13 Additional Functions Normally Associated with Power Supplies……Page 102
3.14 Laying Out the Printed Circuit Board……Page 105
3.15 PWM Design Examples……Page 112
4.1 Major Losses within the PWM Switching Power Supply……Page 147
4.2 Techniques for Reducing the Major Losses……Page 155
4.3 Snubbers……Page 157
4.5 Saturable Inductors to Limit Rectifier Reverse Recovery Current……Page 160
4.6 Quasi-resonant Converters……Page 163
4.7 High Efficiency Design Examples……Page 175
A.1 Developing the Thermal Model……Page 199
A.2 Power Packages on a Heatsink (TO-3, TO-220, TO- 218, etc.)……Page 201
A.3 Power Packages Not on a Heatsink (Free Standing)……Page 202
A.4 Radial-leaded Diodes……Page 203
A.5 Surface Mount Parts……Page 204
A.6 Examples of Some Thermal Applications……Page 205
B.1 The Bode Response of Common Circuits Encountered in Switching Power Supplies……Page 208
B.2 Defining the Open Loop Response of the Switching Power Supply The Control- to- Output Characteristics……Page 213
B.3 The Stability Criteria Applied to Switching Power Supplies……Page 217
B.4 Common Error Amplifier Compensation Designs……Page 218
Appendix C. Power Factor Correction……Page 232
C.1 A Universal Input, 180W, Active Power Factor Correction Circuit……Page 237
D.1 Basic Magnetic Theory Applied to Switching Power Supplies……Page 244
D.2 Selecting the Core Material and Style……Page 248
E.1 The Nature and Sources of Electrical Noise……Page 253
E.2 Typical Sources of Noise……Page 255
Design of the common-mode filter……Page 257
Choosing the damping factor……Page 259
Calculating the initial component values……Page 260
Choosing Ïreal worldÓ available components……Page 0
Real-world considerations……Page 261
F.1 Measurement Unit Conversions……Page 262
F.2 Wires……Page 263
References……Page 267
Index……Page 269