文档介绍：The Designer’s munity downloaded from .org
Simulation and Modeling
of Nonlinear ics
Mark C. Williams, Ronald S. Vogelsong, and
h S. Kundert
Version 1b, August 1994 A procedure for modeling and simulation of arbitrary nonlinear ponents
is presented. A set of ic primitives is described as implemented in Ver-
ilog-A. The primitives include cores, gaps, and windings that bined to model
ic inductors and transformers. The physics of the ic core model
is described. The model is used to illustrate how to e some difficult modelling
issues such as hysteresis, incremental models, implicit models, and multidisciplinary
models
Originally written in August 1994, this paper was presented at the IEEE International Symposium
on Circuits and Systems (ISCAS-1995) in May 1995. In March 2002 the models were converted to
Verilog-A.
Last updated on May 11, 2006. You can find the most recent version at .org.
Contact the author via e-mail at ******@designers-.
Permission to make copies, either paper or electronic, of this work for personal or classroom use
is granted without fee provided that the copies are not made or distributed for profit mer-
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Copyright © 2006, h S. Kundert – All Rights Reserved 1 of 12
Introduction
1 Introduction
Many designs for power applications, such as switching power supply and regulator cir-
cuits, make use of ic inductors and transformers. These applications have
created a need for a model that can accurately describe the operation of nonlinear mag-
netic devices. Unfortunately, these devices exhibit several qualities that make modeling
difficult. In particular, the nonlinear hysteric nature and the wide variety of core topolo-
gies pose a challenge to modeling of such devices.
It is impractical to model all possible configurations wi