Table of Contents
Advances in Power Electronics
Volume 2012, Article ID 574289, 8 pages
Research Article

Comparison of Duty Cycle Generator Algorithms for SPICE Simulation of SMPS

Department of Electrical Engineering and Computer Science, University of California, Irvine, CA 92697-2625, USA

Received 28 February 2012; Revised 9 April 2012; Accepted 10 April 2012

Academic Editor: Henry S. H. Chung

Copyright © 2012 Alexander Abramovitz. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The paper presents and discusses an algorithm for average modeling of the PWM modulator in switch-mode power systems by general purpose electronic circuit simulators such as PSPICE. A comparison with previous theoretical models is conducted. To test the accuracy of the average PWM models comparison to cycle-by-cycle simulation was conducted. The proposed algorithm shows better accuracy than earlier counterparts.