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ROHM Co., a globally renowned semiconductor manufacturer, EcoGaN with 650V withstand voltage and TOLL packaging from Ltd. (hereinafter referred to as "ROHM") ™ The product GaN HEMT is adopted by Murata Power Solutions, an advanced Japanese electronic component, battery, and power manufacturer, for its AI (artificial intelligence) server power supply. ROHM's GaN HEMT has low loss operation and high-speed switching performance, helping Murata Power Solutions' AI server 5.5kW output power unit achieve miniaturization and high-efficiency operation. It is expected that the power unit will begin mass production in 2025.

In recent years, the volume of data communication has been on a continuous increasing trend globally with the development of AI (Artificial Intelligence) and AR (Augmented Reality) and other developments in the IoT field. Among other things, it is said that a single query using AI consumes several times more power than a regular web search, creating an urgent need for further efficiency improvements in AI server power supplies that power high-speed computing devices and the like that process these queries. On the other hand, GaN devices, which have low on-resistance and high-speed switching characteristics, are attracting attention because they contribute to the high-efficiency operation of power supplies and the miniaturisation of peripheral components such as inductors used in power supply circuits.

We are pleased that the use of Rohm's GaN HEMTs has enabled us to design AI server power supply units with higher efficiencies and higher power densities,’ said Dr Joe Liu, Technical Fellow at Murata Power Solutions. The GaN HEMT's high-speed switching operation, low parasitic capacitance, and zero reverse recovery characteristics minimise the impact on switching losses, increase the operating frequency of the switching converter, and reduce the size of the magnetic components. ROHM's GaN HEMTs are very competitive in terms of performance and reliability, and have been used in our AI server 5.5kW output power supply unit with excellent results. In the future, we will endeavour to improve the efficiency of various power supplies by continuing to work with ROHM, which has significant strengths in the field of power semiconductors, in order to contribute to solving the social issue of tight power supply and demand.’

Yuhei Yamaguchi, Director of Power Stage Product Development Department, Rohm LSI Business Unit, said, ‘It is an honour for Rohm's EcoGaN™ to be adopted in the AI server power supply unit of Murata Power Solutions, a global leader in the power supply field. The adoption of GaN HEMTs with industry-advanced switching performance and the use of TOLL packages with excellent heat dissipation will help Murata Power Solutions' power supply units achieve higher power density and higher efficiency. In addition, Murata Power Solutions shares Rohm's management vision of ‘contributing to society through electronics,’ and we hope to continue to work with Murata in the future to promote the miniaturisation and efficiency of power supplies and to contribute to the richness of people's lives.

About Murata Power Solutions' AI server power supply units

Murata Power Solutions' AC-DC power supply “1U Front End” series includes the high power density Short Version M-CRPS packaged 3.2kW power supply ’D1U T-W-3200-12-HB4C D1U T-W-3200-12-HB4C’ (12V output version) and “D1U T-W-3200-54-HB4C” (54V output version), as well as the 5.5kW “D1U67T-W-5500-50-HB4C” for AI servers. ‘Murata Power Solutions' front-end power supplies have high conversion efficiencies to meet the most stringent requirements of 80 Plus Titanium and open computing products, and support N+M redundancy to improve system reliability, making them suitable for powering the latest GPU servers. Not only can it provide reliable and efficient power for servers, workstations, storage systems and communication systems, but its low profile 1U size also helps to reduce system area.

About ROHM

ROHM is a manufacturer of semiconductor electronic components founded in 1958. Through its global development and sales network, Rohm provides high-quality and reliable ICs, discrete semiconductors, and electronic components for the automotive and industrial equipment markets, as well as for a wide range of markets such as consumer electronics and communications.

In the power electronics and analogue fields in which Rohm excels, Rohm's strength is in providing total system optimisation solutions that include silicon carbide power components and driver ICs that take full advantage of their performance, as well as peripheral components such as transistors, diodes, resistors, and so on.