Three-terminal insulated-gate power electronic device with a var

Details Three-terminal insulated-gate power electronic device with a var Three-terminal insulated-gate power electronic device with a var

1995-04-12

1996-10-29

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Gating

327108, 327403, 327427, 327478, H03K 1700

Patent

active

055700578

ABSTRACT:
A three-terminal insulated-gate power electronic device includes a first, bipolar power transistor and a second, insulated-gate transistor forming a darlington pair. The bipolar power transistor has a first electrode, a second electrode, and a control electrode respectively connected to a first electrode of the insulated-gate transistor and to a first external terminal of the three-terminal device, to a second external terminal of the three-terminal device, and to one second electrode of the insulated-gate transistor. The three-terminal device further includes switching means connected between the control electrode and the second electrode of the bipolar power transistor, and control circuit means connected to another second electrode of the insulated-gate transistor and controlling the switching means to switch it from a highly-conducting condition for low values of a current flowing through the first and second external terminals to a non-conducting condition for high values of the current flowing between the first and second external terminals.

REFERENCES:
patent: 4189651 (1980-02-01), Akamatsu
patent: 4366522 (1982-12-01), Baker
patent: 4404478 (1983-09-01), Rischmuller
patent: 4672245 (1987-06-01), Majumdar et al.
patent: 4680483 (1987-07-01), Giodano
patent: 5061863 (1991-10-01), Mori et al.
patent: 5170072 (1992-12-01), Ihara
European Search Report from European Patent Application Number 94830168.4.

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