Venturing into MHz switching frequency promotes the integration of inductive DC-DC converter into mobile devices. Combining GaN power switch with low-loss ferrite core materials opens up new possibilities for high-frequency operations. In this work, we investigate the design of a single core inductor and single chip half-bridge switch for ZVS buck converter. Design guidelines are accompanied by preliminary performance assessment via simulations. To demonstrate the performance of our device, we fabricated and tested a 20 W prototype converting 6 - 12 V to 4 V at 2 MHz switching frequency. The prototype achieves η > 90 % at Pout > 15 W and power density of 9.26 W/m2 with < 5 mm thickness.

Design of a Single Chip, Single Core, ZVS Buck Converter in MHz Domain / Sanusi, B. N.; Beleggia, M.; Ouyang, Z.. - (2021), pp. 611-617. (Intervento presentato al convegno 12th IEEE Energy Conversion Congress and Exposition - Asia, ECCE Asia 2021 tenutosi a sgp nel 2021) [10.1109/ECCE-Asia49820.2021.9479114].

Design of a Single Chip, Single Core, ZVS Buck Converter in MHz Domain

Beleggia M.;
2021

Abstract

Venturing into MHz switching frequency promotes the integration of inductive DC-DC converter into mobile devices. Combining GaN power switch with low-loss ferrite core materials opens up new possibilities for high-frequency operations. In this work, we investigate the design of a single core inductor and single chip half-bridge switch for ZVS buck converter. Design guidelines are accompanied by preliminary performance assessment via simulations. To demonstrate the performance of our device, we fabricated and tested a 20 W prototype converting 6 - 12 V to 4 V at 2 MHz switching frequency. The prototype achieves η > 90 % at Pout > 15 W and power density of 9.26 W/m2 with < 5 mm thickness.
2021
12th IEEE Energy Conversion Congress and Exposition - Asia, ECCE Asia 2021
sgp
2021
Sanusi, B. N.; Beleggia, M.; Ouyang, Z.
Design of a Single Chip, Single Core, ZVS Buck Converter in MHz Domain / Sanusi, B. N.; Beleggia, M.; Ouyang, Z.. - (2021), pp. 611-617. (Intervento presentato al convegno 12th IEEE Energy Conversion Congress and Exposition - Asia, ECCE Asia 2021 tenutosi a sgp nel 2021) [10.1109/ECCE-Asia49820.2021.9479114].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1270666
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