Navitas announced a production-ready 12-kW PSU reference design that achieves 97.8% efficiency for hyperscale AI data centers with 120-kW rack densities. The design incorporates three-phase interleaved TP-PFC and FB-LLC stages, implemented using Gen-3 Fast SiC MOSFETs and 4th-generation high-power GaNSafe ICs, respectively. The GaNSafe ICs integrate control, drive, sensing, and essential protection functions, while IntelliWeave digital control enhances overall performance.
IntelliWeave uses a hybrid strategy combining Critical Conduction Mode (CrCM) and Continuous Conduction Mode (CCM) to optimize efficiency from light to full load. This approach simplifies the design, reduces component count, and lowers power losses by 30% compared to conventional CCM-only solutions.
The PSU meets Open Rack v3 (ORv3) and Open Compute Project (OCP) standards, with dimensions of 790×73.5×40 mm. It operates from 180 VAC to 305 VAC and delivers up to 50 VDC, supplying 12 kW above 207 VAC and 10 kW below. Features include active current sharing and protection against overcurrent, overvoltage, undervoltage, and overtemperature. It operates from –5°C to +45°C, provides ≥20 ms hold-up time at 12 kW, and limits inrush current to ≤3× steady-state current for <20 ms. Cooling is provided by an internal fan.
For more information about the 12-kW PSU reference design, click here.
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