Designs and applications that increase the switching speed of power electronics switching devices

摘要

PROBLEM TO BE SOLVED: To provide a method for increasing the switching speed of a power electronics switching device, reducing damage to the device due to a tail current, and improving the reliability of the device. SOLUTION: In a thyristor module, a PNP type power tube 1, an NPN type power tube 2, a diode 3, a virtual saturation voltage Ucer virtual constant voltage unit 4, a clamp diode 5, a turn-off electronic switch 7, a switching control pulse input terminal 8, The load resistance 9 and the power supply voltage 11 are included. By switching the virtual saturation voltage Ucer virtual constant voltage unit to a different virtual saturation voltage state set in advance during saturation conduction, the time constant of tailing in the base region is lowered and the total amount of power loss due to tailing during the stop period is reduced. , Improve switching speed design to the maximum. [Selection diagram] Fig. 1