High-Frequency High-Efficiency LLC Module with Planar Matrix Transformer for CRPS Application Using GaN Power IC

Abstract:
To meet the rapidly increasing demand of datacenters, there is a growing need for power supplies with higher power density and efficiency. In this paper, we have constructed a 1.5 kW LLC resonant converter module, which utilizes integrated GaN HEMT ICs from Navitas and fits perfectly within the dimensions of a standard 1U CRPS (90 mm x 30.5 mm x 11 mm). Through leveraging the exceptional performance of the GaN HEMT ICs, we have been able to push the switching frequency to over 600 kHz while maintaining an efficiency of 97.5%. When combined with the industry-leading Totem-Pole PFC, the peak efficiency of the entire system meets the Titanium standard set by 80Plus.