Reducing SMPS Size and Losses with a Novel Piezoelectric EMI Filter

Hubert F, Kübrich D, Dürbaum T, Rupitsch SJ (2024)

Publication Type: Conference contribution, Original article

Publication year: 2024

Event location: Düsseldorf DE

Abstract

Switch-mode power supplies (SMPS) represent a main contributor of electromagnetic interference (EMI). Reducing the EMI filter size with minimal effort is a complex challenge for SMPS developers. To tackle this challenge, we present a new EMI filter concept based on the piezoelectric effect. By utilizing several mechanical vibration modes, multiple disturbance peaks of an interference spectrum can be suppressed. For demonstration purpose an optimized piezoelectric EMI filter is implemented in a flyback converter and the EMI suppression is investigated. In the experiment, a 36 % lower DC loss and a 55 % volume reduction could be achieved by substituting a conventional Y-capacitor with a piezoelectric EMI filter.

Authors with CRIS profile

Florian Hubert Lehrstuhl für Autonome Systeme und Mechatronik Daniel Kübrich Professur für Optoelektronik Thomas Dürbaum Professur für Elektromagnetische Felder

Involved external institutions

Albert-Ludwigs-Universität Freiburg DE Germany (DE)

How to cite

APA:

Hubert, F., Kübrich, D., Dürbaum, T., & Rupitsch, S.J. (2024). Reducing SMPS Size and Losses with a Novel Piezoelectric EMI Filter. In Proceedings of the CIPS 2024 - International Conference on Integrated Power Electronics Systems. Düsseldorf, DE.

MLA:

Hubert, Florian, et al. "Reducing SMPS Size and Losses with a Novel Piezoelectric EMI Filter." Proceedings of the CIPS 2024 - International Conference on Integrated Power Electronics Systems, Düsseldorf 2024.

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