Comparison of three different modulators for Power Converters with respect to EMI optimization

Author

Knott, Arnold ; Pfaffinger, Gerhard ; Andersen, Michael A E

Author_Institution

Tech. Univ. of Denmark, Lyngby

fYear

2008

fDate

June 30 2008-July 2 2008

Firstpage

117

Lastpage

123

Abstract

Switch-mode power converters are well known for emissions in the band of electromagnetic interference (EMI) interest. The spectrum shape depends on the type of modulator and its purpose. This paper gives design guidelines to choose the optimum topology depending on requirements of different applications. Spectral measurements on prototypes of a pulse width modulator (PWM), a DeltaSigma-modulator and a hysteretic self-oscillating modulator are shown, which are verifying their simulations, with respect to different EMI challenges.

Keywords

electromagnetic interference; power convertors; sigma-delta modulation; switched mode power supplies; DeltaSigma-modulator; EMI optimization; electromagnetic interference interest; hysteretic self-oscillating modulator; optimum topology; pulse width modulator; spectrum shape; switch-mode power converters; Delta modulation; Electromagnetic interference; Electromagnetic measurements; Guidelines; Pulse measurements; Pulse width modulation; Shape; Switching converters; Topology; Virtual prototyping;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics, 2008. ISIE 2008. IEEE International Symposium on

Conference_Location

Cambridge

Print_ISBN

978-1-4244-1665-3

Electronic_ISBN

978-1-4244-1666-0

Type

conf

DOI

10.1109/ISIE.2008.4676962

Filename

4676962