Design of a High-to-Low Voltage, Low-Power, Isolated DC/DC Converter for EV Applications - Archive ouverte HAL
Article Dans Une Revue IEEE J. Emerg. Sel. Topics Power Electron. Année : 2022

Design of a High-to-Low Voltage, Low-Power, Isolated DC/DC Converter for EV Applications

Résumé

The design of a low-cost 800V-to-12V, 4 W isolated DC/DC converter for automotive applications is investigated. Such a converter is required to supply tiny systems directly from the high-voltage battery of an Electric Vehicle. In particular, a selected topology based on a Multi-Level Flying-Capacitor stage is analyzed. The converter operating mode selection is studied and simulation results reveal the interest of operating at the limit of the ZVS mode. The design of a planar transformer adapted to the application is described. Design considerations of an IC brick that includes the main blocks required to control the power stage are discussed. The performances of a 4 W prototype with two transformer designs validate the choice of the operating mode. The peak efficiency is 87.4% which confirms the interest of the selected approach compared to existing solutions
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Dates et versions

hal-03976218 , version 1 (06-02-2023)

Identifiants

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Etienne Foray, Christian Martin, Bruno Allard, Pascal Bevilacqua. Design of a High-to-Low Voltage, Low-Power, Isolated DC/DC Converter for EV Applications. IEEE J. Emerg. Sel. Topics Power Electron., 2022, 10 (6), pp.6929-6937. ⟨10.1109/JESTPE.2022.3144281⟩. ⟨hal-03976218⟩
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