NDLI: EMI reduction using symmetrical switching and capacitor control

Content Provider	IEEE Xplore Digital Library
Author	Paixao, J. Karvonen, A. Astrom, J. Tuveson, T. Thiringer, T.
Copyright Year	2008
Description	Author affiliation: Dept. of Energy & Environ., Chalmers Univ. of Technol., Goteborg (Paixao, J.)
Abstract	An EMI reduction technique using two MOSFETs instead of a single MOSFET in a step-down converter is investigated in this article. A circuit that implements this technique together with external capacitor control was designed and measurement results were compared against simulations. The switching element in the proposed circuit is an IRF7309 that consists of a p-channel and an n-channel MOSFET in the same package. The entire circuit also consists of an input circuit for the control pulses and a controller circuit responsible for optimizing the turn-on and turn-off of the p-channel MOSFET and n-channel MOSFET. The effect of difference in the threshold voltage between the two MOSFETs is controlled by external capacitances in a configuration referred to as capacitor control. The analyzes of simulations and measurement results show that the symmetrical switching (or double MOSFET switching) technique can successfully be applied to reduce the RF emission in the low frequency and medium frequency range when compared to the single MOSFET switching.
Starting Page	686
Ending Page	689
File Size	362978
Page Count	4
File Format	PDF
ISBN	9789810806293
DOI	10.1109/APEMC.2008.4559968
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-05-19
Publisher Place	Singapore
Access Restriction	Subscribed
Rights Holder	Asia Pacific EMC Society
Subject Keyword	Circuit simulation Electromagnetic interference Packaging Frequency Switched capacitor circuits Pulse circuits Threshold voltage Voltage control MOSFETs Switching circuits
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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