A trajectory control gate driver for Wide Band Gap devices in standard packages

The acceptance of Wide band Gap devices is partially dependent on the ease of retrofitting existing designs of power converter. Standard power modules are inherently ill-suited to the fast switching behavior of Silicon Carbide power transistors. Active gate drivers can manage the switching dynamics of power devices by means of feedback and control on the gate. This paper proposes a low cost yet effective di/dt-based active gate driver using a sensor made on a printed circuit board (PCB) and an analog feedback loop.