GreatWall partners with Navitas for 2.5kW AI datacentre power supply

Great Wall in China has chosen to utilize the GaNSense power devices from Navitas Semiconductors for a 2.5kW high power density DC-DC converter tailored for AI data centers. The quarter brick 2.5kW DC-DC converter boasts an impressive power density of 92.36W/cm³, a significant eight times higher than the output power of conventional silicon designs. The GaNSense NV6169 650V, 45 mΩ, transistor and gate driver is capable of achieving a half-load efficiency of 97.9% and features a wide input range of 320-420 VDC to meet the increasingly stringent efficiency guidelines and regulations set forth by the Open Compute Project (OCP).

The GaNSense technology also offers loss-less current sensing and the world’s fastest short-circuit protection, with a remarkable ‘detect-to-protect’ speed of only 30 ns, which is six times faster than discrete designs. This innovative feature enables the design to deliver 50% more power than previous designs in an industry-standard, low-profile, low-inductance, 8 x 8 mm PQFN package, ideal for high-efficiency, high-density power systems.

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The increasing demand for higher power GPUs in AI data centers is propelling the transition to 400V architectures. The adoption of smaller modules with enhanced efficiency and greater independence not only frees up valuable cabinet space but also directly enhances computing power while reducing energy consumption.

Despite being rated at 650V for nominal operation, the NV6169 boasts an 800 V peak-rating for robust operation during transient events. The GaN gate is fully protected, and the entire device is rated at an industry-leading electrostatic-discharge (ESD) specification of 2 kV.

“With its faster switching frequency and higher efficiency, GaN has become a key factor in unlocking the next generation of power supplies. We are very pleased to collaborate with Navitas, an industry leader in GaN technology, and successfully enable this industry-leading ultra-high-power density and ultra-high efficiency DC-DC converter,” said Michael Zhang, head of DC Product Line at Great Wall Power.

“We look forward to deepening our collaboration with Navitas to unlock the application of GaN in more fields, continuously improve power supply efficiency to reduce energy consumption, and accelerate the low-carbon transformation of various industries,” Zhang added.

“Navitas firmly believes that continuous cooperation with Great Wall will make GaN technology shine in multiple fields such as AI data centers and telecommunications and promote the industry to develop towards a more efficient and environmentally friendly direction,” said Charles Zha, SVP and GM of Navitas Asia-Pacific.