Optimizing PCB Layout

This white paper explores how PCB layout optimization can maximize the performance of eGaN® FET-based power converters. It compares conventional lateral and vertical power loop layouts, demonstrating that PCB parasitics and loop inductance significantly affect efficiency, switching speed, voltage overshoot, and EMI. The authors propose an optimized layout that combines magnetic field self-cancellation with reduced loop area to minimize inductance. Experimental results show up to 65% lower loop inductance, reduced power losses, lower voltage overshoot, and improved efficiency compared to conventional designs and silicon MOSFET solutions. The optimized approach enables higher switching frequencies, improved reliability, and enhanced converter performance.