Driver circuit including preslewing circuit for improved slew ra

Details Driver circuit including preslewing circuit for improved slew ra Driver circuit including preslewing circuit for improved slew ra

1996-10-24

1998-04-21

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Slope control of leading or trailing edge of rectangular or...

327108, 327377, 327437, H03K 512

Patent

active

057421935

ABSTRACT:
A preslewing circuit to rapidly drop a voltage on the gate of a power device in a power stage has a combination of a bipolar transistor and CMOS transistors. The gate voltage is brought down by the preslewing circuit to a level at which an output voltage can begin to change. The combination has high conduction and can be integrated readily, with good internal isolation, in a small chip area, thus having qualities desirable for high performance, integrated, driver circuits.

REFERENCES:
patent: 5191269 (1993-03-01), Carobolante
patent: 5306988 (1994-04-01), Carobolante et al.
patent: 5311084 (1994-05-01), Gabara
patent: 5374857 (1994-12-01), Carobolante
patent: 5514939 (1996-05-01), Schlager et al.
patent: 5568081 (1996-10-01), Lui et al.
Gariboldi, "Motion Control," appearing in Smart ICs, Murari et al., Eds., 1995, Ch. 5, pp. 225-283.
Grebene, Bipolar and MOS Analog Integrated Circuit Designs, 1984, Sec. 4.1 pp. 171-183, and Sec. 6.2, pp. 271-277.

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