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Advances in Power Electronics
Volume 2014 (2014), Article ID 383089, 11 pages
Research Article

An FPGA Chaos-Based PWM Technique Combined with Simple Passive Filter for Effective EMI Spectral Peak Reduction in DC-DC Converter

School of Electrical Engineering, VIT University, Vellore, Tamilnadu 632014, India

Received 21 September 2013; Revised 10 December 2013; Accepted 16 December 2013; Published 24 February 2014

Academic Editor: Gabriele Grandi

Copyright © 2014 Sudhakar Natarajan and Rajasekar Natarajan. 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.


A new and simple but effective electromagnetic interference suppression technique based on field programmable logic array (FPGA) technology to provide a significant EMI noise attenuation in DC-DC converters is discussed. The voltage controlled boost converter for EMI reduction is analyzed using FFT under traditional PWM technique and chaotic mode operation. This technique aids the DC-DC converters to comply in specified EMI limits and replace conventional bulky passive filter with a simple passive filter. A prototype model has been tested and hardware results show significant reduction of EMI in chaotic mode operation of the boost converter.