PARALLEL CONNECTOR FOR GATE TURN-OFF THYRISTOR

摘要

PURPOSE:To prevent the overcurrent of a circuit by connecting at least one of the gate terminals and the cathode terminals of a plurality of gate turn-OFF thyristors connected in parallel with each other via conductors, thereby averaging the currents. CONSTITUTION:The gate terminals G1, G2 of gate turn-OFF thyristors GTO1, 2 are connected via a conductor 3. The GTOs 1, 2 have p-n-p-n junctions, anode terminals A1, A1 connected to p11 type, p12 type layers, gate terminals G1, G1 connected to the p12 type, p22 type layers, and cathode terminals K1, K1 connected to n12 type, n22 type layers. The terminals A1 and A1, K1 and K2 are connected to connect the GTOs 1, 2 in parallel with each other. The terminal 5 of a gate circuit 4 is connected to the terminals G1, G2, and a terminal 8 is connected to the terminals K1, K2. The ON gate current is flowed from the gate circuit 4 in the circuits of ''terminal 5-terminal G1-p12 type layer-n12 type layer- n12 type layer-terminal K1-terminal 8'' and ''terminal 5-terminal G2-p22 type layer-n22 type layer-terminal K2-terminal 8''. The irregular ON gate currents can be abruptly averaged by the conductor 3. The OFF gate current can be similarly averaged.