TOKYO, Japan, Oct 13, 2025 – Renesas Electronics is supporting power conversion and distribution for the 800V direct current power architecture announced by NVIDIA. The collaboration enables efficient power delivery across high-performance computing systems, helping scale AI infrastructure.
As AI workloads increase and data centers reach power levels of several hundred megawatts, operators must adopt energy-efficient power architectures. Wide bandgap semiconductors such as GaN FET switches are becoming essential because they switch faster, reduce energy losses, and improve thermal performance. GaN power devices also enable 800V direct current buses to reduce distribution losses, minimize the need for large bus bars, and allow reuse of 48V components through DC/DC step-down converters.
Renesas’ GaN based power solutions support DC/DC conversion with operating voltages ranging between 48V to 400V and can be stacked up to 800V. Based on the LLC direct current transformer (LLC DCX) topology, the converters achieve up to 98% efficiency. For AC/DC front-end, Renesas applies bi-directional GaN switches to simplify rectifier design and increase power density. Renesas REXFET MOSFETs, along with drivers and controllers, complete the bill of materials (BOM) for the new DC/DC converters.
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“AI is transforming industries at an unprecedented pace, and the power infrastructure must evolve just as quickly to meet the explosive power demands,” said Zaher Baidas, senior vice president and general manager of power at Renesas. “Renesas is helping power the future of AI with high-density energy solutions built for scale, supported by our full portfolio of GaN FETs, MOSFETs, controllers and drivers. These innovations will deliver performance and efficiency, with the scalability required for future growth.”
Renesas has published a white paper that explores the topology of its devices supporting 800V power distribution in AI infrastructure.
Source: Renesas Electronics
About Renesas Electronics
Renesas Electronics Corp., based in Tokyo, supplies power management integrated circuits (PMICs) and ships more than 1.5 billion power devices annually for computing, industrial, IoT, data center, and communications markets. Its portfolio includes PMICs, discrete devices, GaN power products, and design tools such as PowerCompass and PowerNavigator. These work with microcontrollers, SoCs, and connectivity solutions to support system design. The company was formed in 2010 through the merger of Renesas Technology and NEC Electronics, with origins in semiconductor units of Hitachi, Mitsubishi, and NEC. For the fiscal year ending Dec. 31, 2024, Renesas reported revenue between $9B and $10B.