GaN-based high-efficiency 1.6kW high-density 1MHz CrM totem pole PFC converter reference design

High-frequency critical conduction mode (CrM) totem pole power factor correction (PFC) is an easy way to design high-density power solutions using GaN. The TIDA-0961 reference design uses TI's 600V GaN power stage LMG3410 and TI's Piccolo™ F280049 controller. This high-density (165 x 84 x 40mm) 2-stage dual-interleaved 1.6kW design is suitable for a variety of space-constrained applications such as server, telecom and industrial power applications. Power stage interleaving reduces input and output ripple current. Hardware is designed to meet conducted emission, surge and EFT requirements to help designers achieve 80+ Titanium specifications.

characteristic

• ● Compressed power stage size 65 x 40 x 40mm, power density greater than 250W/inch3
• ● The efficiency can reach 98.7% under 230V AC input and full load
• ● TI LMG3410 GaN power stage features integrated driver and protection features to ensure circuit reliability and simplify design
• ● Complete digital control using TI Piccolo™ F280049 controller
• ● Eliminates external cooling requirements for ambient operation up to 55°C and 50% load