EMI Design for DC-DC Converters
Sandeep Tammana1, Siva Yellampalli2

1Sandeep Tammana, VTU Extension Center, UTL Technologies Ltd, Bangalore (Karnataka), India.
2Dr. Siva Yellampalli, VTU Extension Center, UTL Technologies Ltd, Bangalore (Karnataka), India.
Manuscript received on 27 February 2019 | Revised Manuscript received on 14 March 2019 | Manuscript Published on 17 March 2019 | PP: 74-79 | Volume-7 Issue-ICETESM18, March 2019 | Retrieval Number: ICETESM19|19©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: Electromagnetic interference (EMI) degrades the performance of electrical circuits and even leads to their malfunctioning. Suppressing EMI at product level is a challenge due to high frequency components in the product. Best way to suppress the effect of EMI is to optimize the circuit right at the component selection, schematic and PCB design levels. By following the best practices in the design, emissions (conducted and radiated) from the product can be reduced drastically. This paper reviews DC-DC (Buck) converters operation with respect to EMI (conducted and radiated emissions) and investigates the existing Circuit Design and PCB layout design techniques to reduce EMI in the buck converter design with the advantages and disadvantages of each technique.
Keywords: DC – DC Converters, EMI, EMC; RFI, PCB Synchronous Buck Converter, SMPS, RC Snubber, RL Snubber.
Scope of the Article: Microstrip Antenna Design and Application