Power transistor driving circuit

Details Power transistor driving circuit Power transistor driving circuit

1992-05-21

1995-06-13

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

327110, 327378, 327483, 327484, 327490, 323289, 323312, 323315, H03B 100, H03K 1714, H03K 1760, G05F 140

Patent

active

054246652

ABSTRACT:
A driving circuit is provided for a power transistor connected to an inductive load. A detection resistor is placed between ground and the emitter of the power transistor. The driving circuit has a first portion which is capable of generating a first current which is a non-linear function of the voltage across the detection resistance. A second portion of the driving circuit is used to generate a base current for the power transistor that is proportional to the first current. The non-linear function of the first current compensates for the non-linear gain with respect to collector current of the power transistor.

REFERENCES:
patent: 4910480 (1990-03-01), Crosby
patent: 4961006 (1990-10-01), Pace et al.
patent: 4990864 (1991-02-01), Kwan
patent: 5027004 (1991-06-01), Palara
patent: 5028811 (1991-07-01), Le Roux et al.
patent: 5138515 (1992-08-01), Bourgeois
patent: 5172018 (1992-12-01), Colandrea et al.

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