Tail-current-less 4.5 kV switching device realizing high frequency operation

Tail-current-less 4.5 kV switching is investigated in this work. A device design to obtain tail-current-less switching has been theoretically attained by a detailed analysis concerning stored carrier behavior in n-base during turn-off. A local lifetime control technique has been used to obtain tail-current-less switching. The switching characteristics of the device which applied local lifetime control technique have been simulated by using a simple local lifetime control model. The fabricated device has realized a tail-current-less turn-off switching with peak current of 30 A/cm² and supplied voltage of 2250 V