Current limitation programmable circuit for smart power actuator

Details Current limitation programmable circuit for smart power actuator Current limitation programmable circuit for smart power actuator

1997-02-27

1998-09-08

Hecker, Stuart N.

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

G05F 1573

Patent

active

058049568

ABSTRACT:
A circuit for limitation of maximum current delivered by a power transistor comprises: a network for detection of the current delivered by the power transistor which generates a first electrical signal; a reference network for generating a reference current proportional to a resistor and self-limited, provided by means of a current generator circuit and a limiting circuit with current mirror; and an operational amplifier which compares the first electrical signal with the reference current and which tends to inhibit the power transistor if the current delivered exceeds a certain threshold value.

REFERENCES:
patent: 4841219 (1989-06-01), Lonergan
patent: 4899098 (1990-02-01), Gariboldi
patent: 5113307 (1992-05-01), Meyer et al.
patent: 5631549 (1997-05-01), Hong
patent: 5637990 (1997-06-01), Kato et al.

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