THREE-TERMINAL INSULATED-GATE POWER ELECTRONIC DEVICE

摘要

PURPOSE: To obtain three-terminal power electronic equipment whose power consumption does not increase in both small output current and large output current. CONSTITUTION: Three-terminal insulating gate type power electronic equipment which contains a 1st bipolar power transistor T2 and a 2nd insulated gate transistor T1 which form a Darlington pair contains a switching means T3 that is connected between a control electrode B2 of the transistor T2 and a 2nd electrode E2 and a control circuit means H which is connected to the other 2nd electrode S12 of the transistor T1, controls the means T3 and switches between a high conductive state to a low value of current I that flows through a 1st C and a 2nd external terminal E and non-conductive state to a high value of the current I that flows through the 1st C and the terminal E.