Analysis of Intrinsic Switching Losses in Superjunction MOSFETs Under Zero Voltage Switching

Maria R. Rogina, Alberto Rodriguez, Diego G. Lamar, Jaume Roig, German Gomez and Piet Vanmeerbeek
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Maria R. Rogina: Electrical, Electronic, Computers and Systems Engineering Department, University of Oviedo, 33204 Gijón, Spain
Alberto Rodriguez: Electrical, Electronic, Computers and Systems Engineering Department, University of Oviedo, 33204 Gijón, Spain
Diego G. Lamar: Electrical, Electronic, Computers and Systems Engineering Department, University of Oviedo, 33204 Gijón, Spain
Jaume Roig: On Semiconductor, 9700 Oudenaarde, Belgium
German Gomez: On Semiconductor, 9700 Oudenaarde, Belgium
Piet Vanmeerbeek: On Semiconductor, 9700 Oudenaarde, Belgium

Energies, 2020, vol. 13, issue 5, 1-13

Abstract: Switching losses of power transistors usually are the most relevant energy losses in high-frequency power converters. Soft-switching techniques allow a reduction of these losses, but even under soft-switching conditions, these losses can be significant, especially at light load and very high switching frequency. In this paper, hysteresis and energy losses are shown during the charge and discharge of the output capacitance (C OSS ) of commercial high voltage Superjunction MOSFETs. Moreover, a simple methodology to include information about these two phenomena in datasheets using a commercial system is suggested to manufacturers. Simulation models including C OSS hysteresis and a figure of merit considering these intrinsic energy losses are also proposed. Simulation and experimental measurements using an LLC resonant converter have been performed to validate the proposed mechanism and the usefulness of the proposed simulation models.

Keywords: soft-switching; Superjunction MOSFET; LLC resonant converter; zero voltage switching; C OSS hysteresis; C OSS intrinsic energy losses (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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