Application of Zero Overvoltage Switching in Switched Mode Power Supplies

Kerscher M, Schmied N, Matlok S, Eckardt B, März M (2025)

Publication Type: Conference contribution

Publication year: 2025

Publisher: IEEE

City/Town: New York City

Pages Range: 1-6

Conference Proceedings Title: 2025 Energy Conversion Congress & Expo Europe (ECCE Europe)

Event location: Birmingham GB

DOI: 10.1109/ECCE-Europe62795.2025.11238468

Abstract

With the increasing adoption of wide bandgap (WBG) semiconductor devices, new methods are required to manage their faster switching characteristics, particularly addressing voltage overshoots caused by fast switching. Zero Overvoltage Switching (ZOS) leverages circuit resonances during the turnoff process to nearly eliminate voltage overshoot, making fast switching essential and reducing switching losses to a minimum. This paper explores two methodologies for a novel ZOS current control in DC/DC converters: Variable Frequency Forced Continuous Conduction Mode (VF-FCCM), while efficient under specific conditions, suffers from turn-off overvoltages and significant AC losses due to high current ripple, making it unsuitable for low-load operations. In contrast, Valley Switching Discontinuous Conduction Mode (VS-DCM) mitigates overvoltage spikes and switching losses, maintaining a consistent ripple but struggles with low-load scenarios due to frequency limitations. Both methodologies were simulated and tested on a lightweight aircraft DC/DC prototype. The findings suggest VS-DCM as a promising candidate for future development.

Authors with CRIS profile

Moritz Kerscher Lehrstuhl für Leistungselektronik (LEE) Nico Schmied Lehrstuhl für Leistungselektronik (LEE) Stefan Matlok Lehrstuhl für Leistungselektronik (LEE) Martin März Lehrstuhl für Leistungselektronik (LEE)

Involved external institutions

Fraunhofer-Institut für Integrierte Systeme und Bauelementetechnologie (IISB) DE Germany (DE)

How to cite

APA:

Kerscher, M., Schmied, N., Matlok, S., Eckardt, B., & März, M. (2025). Application of Zero Overvoltage Switching in Switched Mode Power Supplies. In 2025 Energy Conversion Congress & Expo Europe (ECCE Europe) (pp. 1-6). Birmingham, GB: New York City: IEEE.

MLA:

Kerscher, Moritz, et al. "Application of Zero Overvoltage Switching in Switched Mode Power Supplies." Proceedings of the 2025 Energy Conversion Congress & Expo Europe (ECCE Europe), Birmingham New York City: IEEE, 2025. 1-6.

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