EMI Reduction Using Symmetrical Switching in an Application with an Unshielded Wire between the converter and the load

Examensarbete för masterexamen

Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.12380/64462
Download file(s):
File Description SizeFormat 
64462.pdfFulltext5.81 MBAdobe PDFView/Open
Type: Examensarbete för masterexamen
Master Thesis
Title: EMI Reduction Using Symmetrical Switching in an Application with an Unshielded Wire between the converter and the load
Authors: Paixao, Julia
Abstract: An EMI reduction technique using two MOSFETs instead of a single MOSFET in a Buck converter has been investigated in this thesis. A circuit that implements this technique was designed, constructed on a surface-mounted technology printed circuit board and tested. The designed circuit is made up of an IRF 7307 consisting of a p-channel and an n-channel MOSFETs; plus the input circuit for the MOSFETs and a “errorhandling” circuit containing a p-regulator responsible for approximating the turn-on and turn-off times of the p-channel MOSFET and n-channel MOSFET, and also correct the effect of differences in the threshold voltages between the two MOSFETs. The analyses of simulations and measurements results show that the symmetrical switching (or double MOSFET switching) technique may successfully be applied to reduce the RF emission in the low frequency and medium frequency range when compared to the single MOSFET switching.
Keywords: Elkraftteknik;Electric power engineering
Issue Date: 2007
Publisher: Chalmers tekniska högskola / Institutionen för energi och miljö
Chalmers University of Technology / Department of Energy and Environment
URI: https://hdl.handle.net/20.500.12380/64462
Collection:Examensarbeten för masterexamen // Master Theses



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.