High power solid state switch module

A high voltage, high di/dt, solid state switch module has been developed. This compact module can be used to replace thyratrons in high power modular applications. The module contains multiple silicon thyristors packaged in a low inductance series configuration with a strip-line output connection. A self powered gate drive is triggered by a 15 V, 1 A pulse. Each module has a rating of 8000 volts and is capable of conducting 6000 amperes over a 10 microsecond pulse with maximum repetition rates of over 120 hertz. The modules have demonstrated a 70 ns turn-on delay time and operation at 25 kA/us, limited by the external circuit. Switches rated for over 50 kV have been assembled using a modular design to easily connect the modules in series. These modules are suitable for pulse modulators for high power RF and microwave amplifiers used in particle accelerators, radars, medical and defense applications, medium and high power lasers, pulsed magnet drivers, and other high power applications. The performance of the modules under normal and fault conditions is described.