Thyristor with two control terminals and control device

Details Thyristor with two control terminals and control device Thyristor with two control terminals and control device

1978-07-05

1980-09-16

Clawson, Jr., Joseph E.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

357 86, 307252K, 307252Q, 307305, H01L 2974

Patent

active

042233313

ABSTRACT:
A thyristor having a common-anode main thyristor and auxiliary thyristor combination integrated in a semiconductor chip with at least four alternating zones of different conductivity types. A first control electrode contacts a small-area control zone recessed in an emitter region. A first ring zone which is at least as highly n-doped as an emitter zone is disposed in the recessed control zone and is partially contacted by a second control electrode, as is also a portion of a p-doped base zone emerging at various places on the chip surface, the p-doped base zone forming a shorted auxiliary emitter. The second control electrode as well as the first control electrode, have leads separately brought out of the thyristor case, as are leads connected to a main cathode terminal and an auxiliary cathode terminal. The second control electrode together with the auxiliary cathode terminal can be used as a trigger-pulse source, or the second control electrode can alone be used as the trigger input to the thyristor.

REFERENCES:
patent: 3476989 (1969-11-01), Miles et al.
patent: 3526815 (1970-09-01), Svedberg et al.
patent: 3566211 (1971-02-01), Svedberg
patent: 3794890 (1974-02-01), Weimann et al.

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