SiC SBDs from ROHM chosen by Murata Power Solutions for data centre PSUs

ROHM’s SiC SBDs, SCS308AH, feature high surge resistance and short recovery time, enabling high-speed switching.

Murata’s D1U front end AC-DC power supply series include many active units such as the D1U54P-W-2000-12-HB3C and D1U54P-W-1200-12-HC4PC, highly-efficient power-factor-corrected front-end power supplies that provide 12V main and 12V/3.3V standby output. Multiple units can share current and operate in parallel. The power supplies support hot-plugging and are protected from fault conditions such as over-temperature, over-current and over-voltage. What’s more, the low profile 1U package make them ideal for delivering reliable, efficient power to servers, workstations, storage systems and other 12V distributed power systems while minimizing the number of required power modules.

Jay Barrus, President, ROHM Semiconductor USA, LLC: “We are excited to help Murata Power Solutions, a Murata Manufacturing Group company that leads the industry in the field of industrial equipment including power supply systems. We are the leading company in SiC power semiconductors and have achieved a significant technological lead in this field along with the provision of power solutions combined with gate driver ICs.

“Together with Murata Power Solutions, we want to further improve the energy efficiency of power supply systems by using the full potential of SiC technology for industrial and data infrastructure.”

ROHM has been a leader in SiC device technology and products since it began the world's first mass production of SiC MOSFETs. ROHM’s latest 3rd generation of SiC SBDs, which have been adopted by Murata Power Solutions, offer greater surge current capability while further reducing the industry’s smallest forward voltage of its 2nd generation SBDs. The total capacitive charge (Qc) of ROHM's SiC SBDs is small, reducing switching loss while enabling high-speed switching operation. In addition, unlike Si-based fast-recovery diodes where the trr (reverse recovery time) increases along with temperature, ROHM’s SiC devices maintain constant characteristics. Also, ROHM’s SiC SBDs allow manufacturers to reduce the size of industrial equipment and consumer electronics, making them ideal for use inpower-factor correction circuits and inverters.

Supporting information

An overview of SiC power devices that includes SiC MOSFETs, SiC SBDs, and SiC power modules (together with various support content that provide an introduction and enable quick evaluation of 4th Gen SiC MOSFETs) can be found on ROHM’s dedicated SiC page below. Feel free to take a look.

SiC Power Devices: https://www.rohm.com/products/sic-power-devices

Supporting content for ROHM 4th Gen SiC MOSFETs:

• Introductory, product videos
• Application notes (product overview and evaluation information, traction inverters, onboard chargers, SMPS)
• Design models (SPICE, PLECS, 3D CAD data of packages, footprints, etc.)
• Simulation circuits of key applications (ROHM Solution Simulator)
• Evaluation board information