High-Density and High-Efficiency 8.0 kW Power Supply Unit for AI Server and Datacenters in 100 W/in3
Conference: PCIM Conference 2025 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
05/06/2025 - 05/08/2025 at Nürnberg, Germany
doi:10.30420/566541080
Proceedings: PCIM Conference 2025
Pages: 10Language: englishTyp: PDF
Authors:
Kutschak, Matteo-Alessandro; Laneve, Antonello; Mirtchev, Alex; Mouselinos, Theodoros; Herrera, David Meneses; Rodriguez, Manuel Escudero
Abstract:
In this paper a complete 8.0 kW AC/DC power supply unit (PSU) for Artificial Intelligence (AI) server and datacenter applications is discussed, addressing design considerations and experimental results. The proposed design is demonstrated to achieve 97.5% peak and 96.5% full-load efficiency at 230 VAC (including fan power consumption) by deploying wide-bandgap (WBG) semiconductors in state-of-the-art power conversion topologies. The PSU fits within a standard 1U rack shelf with outer dimensions of 40 mm x 73.5 mm x 450 mm including chassis, achieving a power density of 100 W/in3 for the full PSU. In the specified dimensions, the PSU meets also other critical server specifications such as the 20 ms hold-up time requirement, in-rush and re-rush current limitations.