News: Microelectronics
18 March 2026
NVIDIA and ST present new delivery boards for 800VDC architectures
NVIDIA of Santa Clara, CA, USA and STMicroelectronics of Geneva, Switzerland is presenting two new delivery boards for 800VDC architectures.
The first one is a 6kW 850kHz LLC converter that uses the same 700V GaN power transistor as the system featured in 2025. However, this smaller model uses a 40V low-voltage MOSFET on the secondary side, rather than a 100V GaN device, and converts 800V to 12V, achieving a peak efficiency of 97.5% and a power density of 2500W/in3. In a nutshell, it’s a smaller version of the 12kW system that omits the intermediate 54V-to-12V converter.
The second delivery board is a 20kW 650kHz eight-level stacked LLC converter that uses a 120V GaN device on the primary side and a 25V MOSFET on the secondary side. NVIDIA will use it for low-power devices as it takes 800V and outputs 6V at a peak efficiency of 96.5%. Despite the significantly lower output than the 6kW board, ST still maintains similar power efficiency levels. It will help power intermediate rails that require high current but prefer a low-voltage rail to improve efficiency and power GPUs, CPUs, or memory modules across various boards and subsystems.
ST unveils prototype power delivery system for NVIDIA’s 800VDC power architecture
