Abstract
An approach to realize a high-power-density versatile DC-DC converter was proposed for the future 380 V DC distribution network in data centres. The series-parallel circuit topology of 48 V DC-DC converters was applied to develop a 384 V DC-DC converter. Availability of the proposed approach is verified by the high-power-density converter design methodology. To confirm the validity, a prototype of a non-isolated 32 V-48 V boost converter with the efficiency of more than 99 % and the power density of more than 10 W/cm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> was fabricated by using commercially available Gallium Nitride (GaN) power devices. The fabricated converter is commonly available for various converter applications in the 380 V DC network, and this contributes to realize future environmentally friendly data centres.
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