According to ROHM, Murata Power Solutions, a division of the Murata Manufacturing Group and a top supplier of electronic components, batteries, and power supplies in Japan, has chosen to use the ROHM EcoGaN series of 650V GaN HEMTs in the TOLL package for AI server power supplies.
Greater efficiency and compactness are achieved by integrating ROHM GaN HEMTs, which combine low loss operation with high-speed switching capability, in the 5.5kW AI server power supply unit from Murata Power Solutions. This power supply unit is scheduled to go into mass production in 2025.
Global data traffic has increased recently due to the quick development of IoT-related disciplines like artificial intelligence (AI) and augmented reality (AR). The need for more effective AI power sources is highlighted by the fact that a single AI-generated response is projected to consume many times as much power as a typical Internet search.
In the meantime, GaN devices—which are renowned for their high-speed switching capabilities and low ON resistance—are drawing interest due to their capacity to increase power supply efficiency while decreasing the size of peripheral parts like inductors utilized in power circuits.
Leadership Comments
Dr. Joe Liu, Technical Fellow, Murata Power Solutions, said, “We are pleased to have successfully designed AI server power supply units featuring higher efficiency and power density by incorporating ROHM’s GaN HEMTs. The high-speed switching capability, low parasitic capacitance, and zero reverse recovery characteristics of GaN HEMTs help minimize switching losses.”
“This allows for higher operating frequencies in switching converters, reducing the size of magnetic components. ROHM’s GaN HEMTs deliver competitive performance and exceptional reliability, yielding excellent results in the development of Murata Power Solutions’ 5.5kW AI server power supply units. Going forward, we will continue our collaboration with ROHM, a leader in power semiconductors, to improve the efficiency of power supplies and address the social issue of increasing power demand.” 
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 miniaturization and efficiency of power supplies to enrich people’s lives.”
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