The continuous evolution of data centers and the increasing demand for higher AI data computation capabilities with low latency execution strongly influence the power delivery technologies and architectures. The power requirement for single AI/ML racks is projected beyond 200kW, a significant increase from the current 30kW-40kW. This shift requires a radical change in power architecture and the adoption of advanced technologies such as Silicon Carbide (SiC) and Gallium Nitride (GaN).
A major aspect of this transformation is the adoption of an 800V DC bus distribution. This approach lowers current ratings for power components, reduces copper usage in PCBs and cables, and increases overall efficiency. The presentation will focus on the 800V DC bus and its impact on power delivery in data centers, detailing the different stages adopted in the power delivery chain: high voltage AC/DC and DC/DC conversion, intermediate 48V bus conversion, and multiphase architectures for high-current CPUs/GPUs.
