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Communication Dans Un Congrès Année : 2011

Conducted EMI prediction for integrated class D audio amplifier

Florent Morel
Christian Vollaire
Angelo Nagari
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Résumé

The aim of this paper is to predict the delivered currents at the output of an integrated audio switching amplifier for EMI prediction. Impedance matrices are used to model the different passive parts of the system. Hereafter, all the matrices are associated in a single one, where the resulting matrix and the output voltages in open circuit are used to predict the output currents spectra directly in the frequency domain. This method can be used by system designers and system integrators in order to study their systems EM emissions before assembling the different parts of the system. The experimental application of this method gives good accuracy up to 10 MHz (twenty times the switching frequency).
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Dates et versions

hal-01103646 , version 1 (15-01-2015)

Identifiants

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Roberto Mrad, Florent Morel, Gaël Pillonnet, Christian Vollaire, Angelo Nagari. Conducted EMI prediction for integrated class D audio amplifier. 18th IEEE ICECS, 2011, Beyrouth, Lebanon. pp.4, ⟨10.1109/ICECS.2011.6122295⟩. ⟨hal-01103646⟩
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