Ozenbaugh Richard L., Pullen Timothy M. EMI Filter Design

3rd edition. — CRC Press Taylor & Francis Group, 2012. — 264 p. — ISBN: 978-1-4398-6322-0.With today’s electrical and electronics systems requiring increased levels of performance and reliability, the design of robust EMI filters plays a critical role in EMC compliance. Using a mix of practical methods and theoretical analysis, EMI Filter Design, Third Edition presents both a hands-on and academic approach to the design of EMI filters and the selection of components values. The design approaches covered include matrix methods using table data and the use of Fourier analysis, Laplace transforms, and transfer function realization of LC structures. This edition has been fully revised and updated with additional topics and more streamlined content.
New to the Third Edition
Analysis techniques necessary for passive filter realization;
Matrix method and transfer function analysis approaches for LC filter structure design;
A more hands-on look at EMI filters and the overall design process.
Through this bestselling book’s proven design methodology and practical application of formal techniques, readers learn how to develop simple filter solutions. The authors examine the causes of common- and differential-mode noise and methods of elimination, the source and load impedances for various types of input power interfaces, and the load impedance aspect of EMI filter design. After covering EMI filter structures, topologies, and components, they provide insight into the sizing of components and protection from voltage transients, discuss issues that compromise filter performance, and present a goal for a filter design objective. The text also includes a matrix method for filter design, explains the transfer function method of LC structures and their equivalent polynomials, and gives a circuit design example and analysis techniques. The final chapter presents packaging solutions of EMI filters.Preface.

Authors.
Terms and Abbreviations.
Organization of the Book.EMI Filters.Technical Challenges.
Types of EMI Filters.
No Such Thng as Black Magic.
It Is All in the Mathematics.Why Call EMI Filters Black Magic?
What Is EMI?
Regular Filters versus EMI Filters.
Specifiations: Real or Imagined.
Inductive Input for the 220-A Test Method.
400-Hz Filter Compared with the 50- or 60-Hz Filter.Common Mode and Differential Mode: Definition, Cause, and Elimination.
Defiition of Common and Diffrential Modes.
Origin of Common-Mode Noise.
Generation of Common-Mode Noise—Load.
Elimination of Common-Mode Noise—Line and Load.
Generation of Diffrential-Mode Noise?
Thee-Phase Virtual Ground.EMI Filter Source Impedance of Various Power Lines.
Skin Effct.
Applying Transmission Line Concepts and Impedances.
Applying Transmission Line Impedances to Diffrential and Common Modes.
Diffrences among Power Line Measurements.
Simple Methods of Measuring AC and DC Power Lines.
Other Source Impedances.Various AC Load Impedances.
Th Resistive Load.
OffLine Regulator with Capacitive Load.
OffLine Regulator with an Inductor ahead of the Storage Capacitor.
Power Factor Correction Circuit.
Transformer Load.
UPS Load.DC Circuit—Load and Source.
Various Source Impedance.
Switcher Load.
DC Circuit for EMI Solutions or Recommendations.
Some Ideas for the Initial Power Supply.
Other Parts of the System.
Lossy Components.
Radiated Emissions.Typical EMI Filters—Pros and Cons.
The π Filter.
The T Filter.
The L Filter.
The Typical Commercial Filter.
The Cauer Filter.
The RC Shunt.
The Conventional Filters.Filter Components—the Capacitor.
Capacitor Specifiations.
Capacitor Construction and Self-Resonant Frequency.
Veeing the Capacitor.
Margins, Creepage, and Corona—Split Foil for High Voltage.
Capacitor Design—Wrap-and-Fill Type.Filter Components—the Inductor.
Inductor Styles and Specifiations.
Core Types.
High-Current Inductors.
Inductor Design.
Converting from Unbalanced to Balanced.Common-Mode Components.
Capacitor to Ground.
Virtual Ground.
Z for Zorro.
Common-Mode Inductor.
Common-Mode Calculation.
Diffrential Inductance from a Common-Mode Inductor.
Common-Mode Currents—Do Thy All Balance?Transformer’s Addition to the EMI Filter.
Transformer Advantages.
Isolation.
Leakage Current.
Common Mode.
Voltage Translation—Step Up or Down.
Transformer as a Key Component of the EMI Package.
Skin Effct.
Review.Electromagnetic Pulse and Voltage Transients.
Unidirectional versus Bidirectional.
Thee Thories.
Initial High-Voltage Inductor.
Arrester Location.
How to Calculate the Arrester.
The Gas Tube.What Will Compromise the Filter?
Specifiations—Testing.
Power Supplies—Either as Source or Load.
9- and 15-Phase Autotransformers.
Neutral Wire Not Part of the Common-Mode Inductor.
Two or More Filters in Cascade—the Unknown Capacitor.
Poor Filter Grounding.
“Floating” Filter.
Unknown Capacitor in the Following Equipment.
Filter Input and Output Too Close Together.
Gaskets.Waves as Noise Sources.
Spike.
Pulse.
Power Spectrum—dB µA/MHz.
MIL-STD-461 Curve.Initial Filter Design Requirements.
Diffrential-Mode Design Goals.
Diffrential-Mode Filter Input Impedance.
Diffrential-Mode Filter Output Impedance.
Input and Output Impedance for a DC Filter.
Common-Mode Design Goals.
Estimation of the Common-Mode Source Impedance.
Methods of Reducing the Inductor Value due to High Current.Matrices, Transfer Functions, and Insertion Loss.
Synthesis, Modeling, and Analysis.
Review of the A Matrix.
Transfer Functions.
Review of Matrix Topologies.
π Filter.
L Matrix.
T Filter.
Cauer or Elliptic Matrix.
RC Shunt.
Filter Applications and Thughts.
Single-Phase AC Filter.
Thee-Phase Filters.
Low-Current Wye.
High-Current Wye.
Single Insert.
Low-Current Delta.
High-Current Delta.
Telephone and Data Filters.
Pulse Requirements—How to Pass the Pulse.
Th DC-DC Filter.
Low-Current Filters.Matrix Applications: A Continuation of Chapter 16.
Impedance of the Source and Load.
dB Loss Calculations of a Single π Filter.
Example of the Calculations for a Single π Filter.
Double π Filter: Equations and dB Loss.
Triple π Filter: Equations and dB Loss.Network Analysis of Passive LC Structures.
Lossless Networks.
Network Impedances Using Z Parameters.
Network Admittances Using Y Parameters.
Transfer Function Analysis—H(j ω).
Transfer Function Analysis—H(s).
Coeffient-Matching Technique.
EMI Filter Stability.Filter Design Techniques and Design Examples.
Filter Design Requirements.
Design Techniques.
Filter Design Summary.
EMI Filter Design Example.
Four-Pole LC Structure.
Design Approach.Packaging Information.
Layout.
Estimated Volume.
Volume-to-Weight Ratio.
Potting Compounds.Appendixes:.
K Values of Different Topologies.
LC Passive Filter Design.
Conversion Factors.