MOS Controlled Thyristor

MOS Controlled Thyristor (or MCT) is voltage controlled fully controllable thyristor. The MCT is similar in operation with GTO thyristor, but it has voltage controlled insulated gate. It has two MOSFETs in its equivalent circuit. One is responsible for turn-on and the another is responsible for turn-off. Thyristor with only one MOSFET in its equivalent circuit, which can be only turned-on, (like usual SCRs) is called MOS Gated Thyristor.

Positive voltage on gate terminal with respect to cathode turns the thyristor into on state.

Negative voltage on gate terminal with respect to anode (which is close to cathode voltage in on state) turns the thyristor into off state.

External links

* [http://www.allaboutcircuits.com/vol_3/chpt_7/10.html Field-effect-controlled thyristor]

References

* "MOS-Controlled Thyristors--A New Class of Power Devices", IEEE Transactions on Electron Devices, Vol. ED-33, No. 10, Oct. 1986, Victor A. K. Temple, pp. 1609 through 1618.
* "MOS GTO--A Turn Off Thyristor with MOS-Controlled Emitter Shorts," IEDM 85, M. Stoisiek and H. Strack, Siemens AG, Munich FRG pp. 158 through 161.