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EMI Generated by Switched DC-DC Converters in Automotive Applications

Author : Tamilarasu.S, P.Thirunavukkarasu and N.Sethupathi

Pages : 1220-1224
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This research paper give you picture to deals with electromagnetic interference that can arise from switched DC-DC converters intended for low-power applications, e.g. automotive industry. It analyzes measures and methods that can applied when a reduction of EMI directly at the source without using any additional means such as shielding and filtering is desired. By investigating the physical properties of the two most important ingoing components, the diode and the MOSFET, an improved MOSFET model and a new gate voltage control method is proposed. This method is referred to as active gate control with an operating principle where a controller circuit shapes the desired output to a sinusoidal trajectory during the entire switching event. By doing this, it is shown that the harmonic content in the output signal can be reduced.

Keywords: Electromagnetic compatibility, DC-DC converter switching, MOSFET switches

Article published in International Journal of Current  Engineering  and Technology, Vol.3,No.4(Oct- 2013)




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