GENEVA, Switzerland, Oct 15, 2025 – STMicroelectronics has introduced a prototype power delivery system to support NVIDIA’s new VDC power architecture for AI data centers. The system is part of STMicroelectronics’ development of chip designs to improve power efficiency.
As AI workloads grow, 54 V power systems used in kilowatt-scale data center racks are no longer sufficient. The 800 VDC architecture meets the higher energy demands of megawatt-scale AI compute racks while improving efficiency, reducing copper use, and simplifying infrastructure.
STMicroelectronics is developing chip technologies for 800 VDC power architectures using its portfolio of silicon carbide (SiC), gallium nitride (GaN), and silicon devices. The company combines these materials with custom chip and package-level designs to optimize performance for high-power data center applications.
At OCP 2025, ST presented a 12 kW power delivery board about the size of a smartphone. The 12kW GaN-based LLC converter, operating at an 800V input and a 1MHz switching frequency, has completed testing, delivering 12kW output power with over 98% efficiency and a power density exceeding 2,600 W/in³ at 50V.
The solution addresses the challenges of power density, efficiency, thermal management, and reliability. It supports the deployment of megawatt-scale AI compute racks while reducing infrastructure complexity and operating costs, a step toward the hyperscale data centers.
Technical details can be downloaded in the whitepaper.
Source: STMicroelectronics
About STMicroelectronics
STMicroelectronics, established in 1987 through the merger of Italy’s SGS Microelettronica and France’s Thomson Semiconducteurs, is a global semiconductor company headquartered in Geneva, Switzerland. The company offers a range of products, including analog chips, discrete power semiconductors, microcontrollers, and sensors, serving industries such as automotive, industrial, personal electronics, communications equipment, and computers. In 2023, STMicroelectronics reported revenues of $17.3 billion, with over 50,000 employees worldwide and offices in 40 countries. The company is committed to sustainability, aiming for carbon neutrality in scope 1 and 2 emissions, and partially scope 3, by 2027.