News: Microelectronics
21 October 2024
Navitas introduces IntelliWeave digital control technique for AI data centers
At the IEEE Energy Conversion Congress & Expo (ECCE 2024) in Phoenix, Arizona (20–24 October), gallium nitride (GaN) power IC and silicon carbide (SiC) technology firm Navitas Semiconductor Corp of Torrance, CA, USA is introducing IntelliWeave, a patented new digital control technique for improving next-generation AI data-center power supply unit (PSU) efficiency.
Since ever more energy is needed for the processing of artificial intelligence (AI) and cloud-based applications, minimizing power consumption has become a priority for data-center architects and operators. Combining GaN and SiC with new control technique strategies to power conversion plays a key role in achieving this goal, notes Navitas.
The firm claims that IntelliWeave’s novel digital control enables the highest system efficiencies with precision current sharing, ultra-fast dynamic response and minimal phase error. A patented dual-loop and dual-feed-forward interleaving control achieves absolute zero voltage switching (ZVS) across the full load range to enable the highest efficiencies. The digital control for critical conduction mode (CrM) interleaving totem pole power factor control (PFC) enables a 30% reduction in power losses compared with existing continuous conduction mode (CCM) solutions. The digital control combined with high-power GaNSafe power ICs has been proven on a 500kHz GaN-based interleaving 3.2kW CrM PFC PSU operating at 99.3% peak efficiency including EMI filter loss.
At ECCE 2024, director Tao Wei is presenting ‘Novel digital control for a GaN-based CrM interleaved TP PFC’ on 21 October (5.30pm) in the main Expo Hall.
