Skip to main content
APEC 2026 Main banner

    Datacenter (including AI) / Telecom Power Architecture & System Considerations

    T03.6 - Compact and Efficient 3kW 1MHz GaN LLC Converter Incorporating Matrix Transformer for Data Center Power Delivery

    Tuesday, March 24, 2026
    10:40 AM - 11:00 AM CT
    Location: 214C
    This paper presents the design and experimental validation of a 3kW, 1MHz LLC resonant converter using GaN transistors, achieving 98.5% peak efficiency. An improved planar matrix transformer, consisting of two elemental planar transformers on a 10-layer, 2Oz PCB with an optimized winding structure, enables high power density and low losses. The study covers the LLC converter design, loss analysis, and transformer optimization in pursuit of ultra high-power density of up to 2500W/in3. Experimental results on a 3kW prototype confirm the high efficiency and compactness, making it ideal for advanced data center power applications.