The single reference Bi-Directional GaN HEMT AC switch

A novel device, the Single Reference Bi-Directional [SRDB] GaN HEMT AC Switch is presented in this paper from an application engineer's point of view. First, the device structure and the main characteristics are introduced. In a second part, the device is implemented in an AC chopper circuit to demonstrate it's hability to switch an AC current from an AC voltage source, then a DC chopper is used to set the device into a switching cell.