ST Demos 12kW GaN Power Module for NVIDIA’s 800VDC AI Racks

STMicroelectronics has unveiled a compact 12kW power delivery prototype designed for NVIDIA’s new 800VDC data center architecture—marking a major leap in high-voltage efficiency for AI infrastructure.

Why 800VDC Is a Game-Changer

Traditional 54V rack systems are hitting their limits. NVIDIA’s 800VDC architecture enables:

• Megawatt-scale compute racks for massive AI workloads
• Lower current transmission, reducing copper and thermal losses
• Simplified power distribution, boosting overall system efficiency

ST’s prototype fits this vision, delivering 12kW in a smartphone-sized footprint using advanced GaN technology.

Inside the ST Power Module

• Gallium Nitride (GaN) transistors for high-speed switching and thermal performance
• High-frequency operation to shrink passive components
• Integrated control and protection for robust deployment

ST also released a white paper detailing layout, EMI control, and thermal strategies.

Ecosystem Momentum

Validated by NVIDIA and showcased at OCP 2025, ST’s module supports:

• Scalable rack and pod-level deployment
• Compatibility with NVIDIA GPU platforms
• Reference designs for OEMs and ODMs

Industry Impact

This prototype sets the stage for:

• Higher efficiency and lower cooling costs

• Simplified infrastructure for AI growth

• Blueprints for future high-voltage data centers

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