News: Microelectronics
6 March 2025
ROHM’s EcoGaN adopted by Murata for AI server power supplies
Japan-based ROHM Co Ltd says that its EcoGaN series of 650V GaN HEMTs in the TOLL package has been adopted by Murata Manufacturing Group subsidiary Murata Power Solutions (a Japan-based supplier of electronic components, batteries and power supplies) for AI server power supplies that will enter mass production this year. ROHM says that integrating its GaN HEMTs (which combine low-loss operation with high-speed switching performance) in Murata’s 5.5kW AI server power supply unit achieves greater efficiency and miniaturization.
“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,” says Murata Power Solutions technical fellow Dr Joe Liu. “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,” he adds.
“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,” says Yuhei Yamaguchi, general manager, Power Stage Product Development Division, LSI business unit, ROHM. “We look forward to strengthening our partnership with Murata Manufacturing,” he adds.
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 suitable 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 the units helps to minimize system footprint.
ROHM launches 650V GaN HEMT in compact, high-heat-dissipation TOLL package
ROHM begins mass production of 650V GaN HEMTs
ROHM’s SiC SBDs chosen by Murata for data-center power supply units
