Device for controlling an output circuit of an integrated circui

Details Device for controlling an output circuit of an integrated circui Device for controlling an output circuit of an integrated circui

1986-09-17

1988-03-29

Miller, Stanley D.

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307255, 307296R, 307303, H03K 326, H03K 1760

Patent

active

047345950

ABSTRACT:
The present invention relates to a method for controlling a Darlington type circuit comprising a main transistor and an auxiliary transistor forming part of an integrated circuit, this control method allowing to reduce consumption, and with this purpose, the control transistor of the Darlington type circuit is connected, not as in classical schemas to the power supply voltage V.sub.CC but to an auxiliary voltage V..sub.AUX which, in the case if the drawing is higher than V.sub.CC be a quantity of about V.sub.BE1 +V.sub.BE2 -V.sub.CE1, V.sub.BE1 and V.sub.BE2 being the base-emitter voltages of the main transistor and of the auxiliary transistor and V.sub.CE1 being the collector-emitter voltage of the main transistor and preferably this auxiliary voltage is obtained from the power supply V.sub.CC by a continuous-continuous converter forming part of the same integrated circuit as the Darlington type circuit.

REFERENCES:
patent: 4013940 (1977-03-01), Kaji
patent: 4109167 (1978-08-01), Kaji et al.
patent: 4318164 (1982-03-01), Onodera
patent: 4607171 (1986-08-01), Hellegaard
patent: 4633100 (1986-12-01), Van Tuijl
Patent Abstracts of Japan, vol. 1, No. 30, Mar. 29, 1987, 7 pages, 1065 E 76; & JP-A-51 122 360 (Sony K.K.), 10-26-1976.

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