Navitas Semiconductor has announced that its portfolio of 3.2kW, 4.5kW, and 8.5 kW AI data centre power supply unit (PSU) designs exceed the new 80 PLUS ‘Ruby’ certification, focused on the highest level of efficiency for redundant server data centre PSUs.
The 80 PLUS certification program assesses and certifies the energy efficiency of internal PSUs in computers and servers. The ‘Ruby’ certification was announced in January 2025 by 80 PLUS's administrating body, CLEAResult, following its endorsement by the Green Grid consortium.
‘Ruby’ is the most rigorous PSU efficiency standard since the ‘Titanium’ certification was released 14 years ago. In comparison, Ruby 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.
This new standard offers the industry a clear path to enhanced energy efficiency, helping data centres address the evolving needs of cloud storage, commercial sectors, and the increasing pressure on the grid from AI computing. For example, every Ruby-certified 3.2 kW CRPS185 PSU can save up to 420 kilowatt-hours during a 3-year lifetime. That is the equivalent of over 400 kg of CO2 emissions.
Navitas exceeds both Ruby and Titanium certifications on their portfolio of AI data center PSU reference designs, ranging from 3.2 kW to 8.5 kW, and are powered by high-power GaNSafe ICs and GeneSiC Gen 3 ‘Fast’ SiC MOSFETs.
Navitas is the established leader in AI data centre solutions enabled by GaN and SiC technology. In August 2023, they introduced a high-speed, high-efficiency 3.2 kW CRPS, achieving a 40% smaller size than best-in-class, legacy silicon solutions for power-hungry AI and Edge computing. This was followed by the world’s highest power density 4.5 kW CRPS, achieving a 137 W/in3, and efficiency of over 97%. In November 2024, Navitas released the world’s first 8.5 kW AI data centre power supply powered by GaN and SiC that could meet 98% efficiency, complying with the Open Compute Project (OCP) and Open Rack v3 (ORv3) specifications. Additionally, Navitas created IntelliWeave, an innovative patented new digital control technique, that when combined with high-power GaNSafe and Gen 3-Fast SiC MOSFETs, enables PFC peak efficiencies to 99.3% and reduces power losses by 30% reduction compared to existing solutions.
"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 CO22. Advances in our GaNFast and GeneSiC products enable these targets to be met and significantly exceeded."
