800VDC Architecture Solutions for AI Servers

This white paper presents an in-depth examination of 800VDC architecture solutions tailored for AI servers. It outlines the limitations of traditional power systems in the context of increasing power demands from AI hardware, particularly GPUs, which have seen power consumption rise significantly. The document details the transition from conventional 48VDC systems to 800VDC architectures, emphasizing the benefits such as enhanced efficiency, reduced copper usage, and support for extreme power densities. It also discusses the evolution of sidecar racks and power supply units, which improve rack density and simplify power distribution. The paper recommends specific topologies and power device selections, highlighting the roles of SiC and GaN devices in achieving the desired performance metrics. Additionally, it includes technical specifications and design considerations for implementing 800VDC systems, aiming to provide a comprehensive resource for stakeholders in the AI server domain.