Navitas targets 80 PLUS Ruby certification for datacentre power supplies
Navitas Semiconductor is aiming for certification to the 80 Plus Ruby efficiency for its GaN and SiC datacentre power supply designs up to 8.5kW.
The GaNSafe and Gen 3 ‘Fast’ SiC MOSFETs are used in the 3.2kW, 4.5kW, and 8.5 kW AI data centre power supply unit (PSU) reference designs to achieve system efficiencies from 96.5% to 98%. Aiming for the 80 PLUS Ruby certification by CLEAResult.
This certification programme assesses and certifies the energy efficiency of internal PSUs in computers and servers. The ‘Ruby’ certification was announced in January 2025 by CLEAResult, the program’s administrating body, following an endorsement by the Green Grid consortium. Ruby certification can only be officially granted by CLEAResult through their own testing and validation process.
Ruby follows the Titanium certification released 14 years ago and sets an additional 1% system efficiency across all load conditions, except at 50% load (which requires a 0.5% increase), to achieve a new benchmark of 96.5% efficiency.
For example, every Ruby-certified 3.2 kW CRPS185 PSU can save up to 420 kilowatt-hours during a three year lifetime. That is the equivalent of over 400 kg of CO2 emissions.
“Compared with Titanium, Ruby cuts the allowable PSU losses significantly and will be critical in enabling the data center industry to reduce its carbon footprint and cut operational costs,” said Gene Sheridan, CEO and co-founder of Navitas. “With the industry set to consume 1,000 TWh annually by next year, every percentage point improvement in efficiency represents a reduction of 10 TWh, or approximately 3.5 million tons of CO2. Advances in our GaNSafe and GeneSiC products enable these targets to be met and significantly exceeded.”
In August 2023 Navitas introduced a high-speed, high-efficiency 3.2 kW CRPS, achieving a 40% smaller size than legacy silicon designs for AI and Edge computing. This was followed by the world’s highest power density 4.5 kW CRPS, achieving 137 W/in3, and efficiency of over 97%. The 8.5 kW AI data centre power supply launched late last year meets 98% efficiency, complying with the Open Compute Project (OCP) and Open Rack v3 (ORv3) specifications.
The IntelliWeave digital control system, combined with the GaNSafe and Gen 3-Fast SiC MOSFETs enables power factor correction peak efficiencies to 99.3% and reduces power losses by 30% reduction compared to existing designs.
If you enjoyed this article, you will like the following ones: don't miss them by subscribing to :
