800V BIAS FOR VERY HIGH DENSITY 5KW POWER CONVERTER IN ARTIFICIAL INTELLIGENCE APPLICATIONS

Very high power module, of 5KW operating from 800V to provide 50V with a power density of 135W/cm3 requires a bias supply to fit in a power module of a surface of less than 40cm2. That creates a major challenge because available Integrated Circuits (ICs) for such applications do not exist, and the g...

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Bibliographic Details
Published inScientific Bulletin. Series C, Electrical Engineering and Computer Science no. 3; p. 215
Main Author Jitaru, Ionel
Format Journal Article
LanguageEnglish
Published Bucharest University Polytechnica of Bucharest 01.01.2025
Subjects
Artificial intelligence
Bias
Integrated circuits
Modules
Power converters
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ISSN2286-3540

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Summary:Very high power module, of 5KW operating from 800V to provide 50V with a power density of 135W/cm3 requires a bias supply to fit in a power module of a surface of less than 40cm2. That creates a major challenge because available Integrated Circuits (ICs) for such applications do not exist, and the goal is to allocate to the bias supply less than 0.8cm2 on the power module. The size of the switching devices for voltage of 1000V and above is another challenge forcing us to consider using a 650V device. The paper will present several solutions in addressing such a challenge. A layout is proposed for the chosen solution presented in this paper meeting the proposed target of 0.8mm2. The focus of this article was to offer bias solutions to a very challenging specification for 5KW power converter operating from 800V bus for Artificial Intelligence applications.
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ISSN:2286-3540