The addition of ROHM's SiC MOSFETs and SiC SBDs to the forced-air-cooled HFA series and the conduction-cooled HCA series achieves efficiencies of up to 94%. The HCA series has been in series production since 2023, while the HFA series began series production in 2024.
Many high-power industrial applications, including MRI machines and CO2 lasers, require three-phase power supplies, which differ from the single-phase power supplies used in homes. COSEL's AC-DC power supplies—equipped with ROHM's EcoSiC™ technology, which excels in high-temperature, high-frequency, and high-voltage environments—are compatible with three-phase power supplies from 200 VAC to 480 VAC, contributing to improved power supply efficiency in a wide range of industrial equipment worldwide.
Jun Uchida, General Manager of Department 2, New Product Development at COSEL Co.
Ltd., stated, “The HFA/HCA series achieves high performance despite offering a 3.5 kW output power rating thanks to the incorporation of low-loss SiC power devices from ROHM. Operating at high input voltages typically presents a challenge in reducing losses in high-voltage power devices, but the use of SiC power devices results in significantly lower losses compared to conventional solutions, yielding power supplies that maintain high efficiency and power density even under demanding high-power conditions.”
Akihiro Hikasa, Group General Manager, Power Devices Business Unit, SiC Business Section, ROHM Co., Ltd., said
, “We are delighted to support COSEL, an industry leader in power systems, by supplying them with SiC power devices. As a leading company in SiC power devices, ROHM also offers comprehensive power solutions that combine peripheral components. Furthermore, by addressing customer challenges, we also improve device performance by incorporating the knowledge gained into our products. In the future, we will continue to collaborate with COSEL to contribute to a sustainable society by improving the efficiency of industrial equipment that handles large amounts of energy.”
HFA/HCA Series 3.5kW AC-DC Power Supplies for Three-Phase Applications.
The HFA/HCA series are 3.5kW power supplies with a wide input range (200VAC to 480VAC) that meets global power supply requirements. This allows for use anywhere in the world without the need to modify the power supply for each region, contributing to the standardization of application designs. Both forced-air cooled (HFA series) and conduction-cooled (HCA series) models—selectable depending on the operating environment—are available in 48V and 65V output voltage variants, making them suitable for various high-power applications such as laser generation and MRI.
Additional Information
The ROHM SiC MOSFET page provides an overview of SiC power devices, including SiC MOSFETs, SiC SBDs and SiC power modules (along with various supporting content that provides an introduction and allows for a quick evaluation of 4th generation SiC MOSFETs).
EcoSiC brand
EcoSiC™ is a brand of silicon carbide devices that is gaining attention in the power device field for its superior performance compared to silicon. ROHM independently develops technologies essential to the advancement of SiC, from wafer fabrication and production processes to packaging and quality control methods. Simultaneously, we have established an integrated production system throughout the manufacturing process, solidifying our position as a leading SiC supplier.
EcoSiC™ is a trademark or registered trademark of ROHM Co., Ltd.
