Multi-driver integrated circuit

Details Multi-driver integrated circuit Multi-driver integrated circuit

1986-01-22

1988-10-18

Pellinen, A. D.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Circuit interruption by thermal sensing

307310, 330207P, 330256, 330298, 361103, H02H 504

Patent

active

047791616

ABSTRACT:
A monolithic integrated circuit (IC) chip in which is formed a multi-driver power circuit, with each driver circuit including one output power transistor, is partitioned such that the power transistor of each driver circuit, formed in the IC, is spaced apart from those of any other driver circuit a distance sufficiently large to ensure the generation of a temperature differential between the power transistors of the different driver circuits when their power dissipation is different. A thermal sensor is formed in close proximity to each output power transistor, and as far away as possible from the other power transistors of the IC, whereby each thermal sensor is thermally, tightly, coupled to its associated power transistor. Each thermal sensor is electrically coupled to the base of its associated power transistor for controlling the conductivity of its associated power transistor when the power dissipation of its associated power transistor and its resulting temperature exceeds a predetermined level.

REFERENCES:
patent: 4553048 (1985-11-01), Bynum et al.
patent: 4667265 (1987-05-01), Stanojeuic et al.

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