March 24, 2026 /SemiMedia/ — STMicroelectronics has launched new 800V DC power conversion designs for AI data centers.

The new designs include 800V to 12V and 800V to 6V paths, expanding on an earlier 800V to 50V approach. The move reflects a shift in data center design, where higher voltage distribution is used to reduce losses and support higher compute density.

Different server setups now use different power stages, depending on GPU type, rack density and cooling method. As a result, multiple intermediate bus levels, such as 50V, 12V and 6V, are expected to be used in parallel across large AI systems.

The 800V to 12V path is designed for rack-level distribution, reducing the number of conversion steps. The 6V path brings power closer to the GPU, helping lower resistive losses and improve response under fast load changes.

The solutions combine different power technologies, including silicon, SiC and GaN devices, along with analog and control components.