ROHM’s EcoGaN adopted for AI server power supplies

Integrating ROHM’s GaN HEMTs, which combine low loss operation with high-speed switching performance, in Murata Power Solutions’ 5.5kW AI server power supply unit achieves greater efficiency and miniaturisation. Mass production of this power supply unit is set to begin in 2025.

Rapid advancements in IoT-related fields such as AI and AR (augmented reality) have led to a surge in global data traffic in recent years. Notably, the power consumption for a single AI-generated response is estimated to be several times higher than that of a standard Internet search, highlighting the need for more efficient AI power supplies. Meanwhile, GaN devices, known for low ON resistance and high-speed switching performance, are gaining attention for their ability to enhance power supply efficiency while reducing the size of peripheral components such as inductors used in power circuits.

Yuhei Yamaguchi, General Manager, Power Stage Product Development Div., LSI Business Unit, ROHM Co., Ltd., said: “We are delighted that ROHM's EcoGaN products have been integrated into AI server power supply units from Murata Power Solutions, a global leader in power supplies. The GaN HEMTs used in this application provide industry-leading switching performance in a high heat dissipation TOLL package, enhancing power density and efficiency in Murata Power Solutions’ power supply units. We look forward to strengthening our partnership with Murata Manufacturing, a company that shares the similar vision of contributing to society through electronics – promoting the miniaturisation and efficiency of power supplies to enrich people’s lives.”

Murata Power Solutions’ power supply units for AI servers

Murata Power Solutions’ series of ‘1U Front End’ AC/DC power supplies includes the D1U T-W-3200-12-HB4C (12V output) and D1U T-W-3200-54-HB4C (54V output) 3.2kW power supplies in the high power density short version M-CRPS package, as well as the 5.5kW D1U67T-W-5500-50-HB4C designed for AI servers. These front-end power supplies deliver high conversion efficiency that meets the stringent requirements of 80+ Titanium and Open Compute products while supporting N+m redundant operation for system reliability, making them ideal for powering the latest GPU servers. In addition to providing reliable, efficient power for servers, workstations, and storage/communication systems, the low profile 1U design of these units helps to minimise system footprint.

ROHM's EcoGaN

ROHM’s brand name for GaN devices that contribute to energy conservation and miniaturisation by maximising GaN characteristics to achieve lower application power consumption, smaller peripheral components, and simpler designs requiring fewer parts.