Rail-to-rail driver for use in a regulator, and method

Details Rail-to-rail driver for use in a regulator, and method Rail-to-rail driver for use in a regulator, and method

1999-06-21

2002-04-16

Wells, Kenneth B. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

C327S112000, C327S074000, C327S478000

Reexamination Certificate

active

06373295

ABSTRACT:

FIELD OF THE INVENTION
The present invention generally relates to electronic circuits, and, more particularly, to a driver circuit used in a regulator, and to a method.
BACKGROUND OF THE INVENTION
Many electronic system (e.g., mobile phones) comprise regulators which couple supply devices (e.g., batteries, main transformers) and consuming devices (e.g., transmitters, speakers, logic circuits, memories). The regulator usually comprises a driver and a power transistor coupled between supply device and consuming device. The driver provides a control signal to a control electrode of the power transistor. The control signal should (i) be able to make the power transistor completely non-conductive if required and (ii) change in a sufficient short time interval.
As it will be explained later by an example (FIG.
2
), drivers of the prior art provide only “weak” control signals. The present invention seeks to provide an improved driver, a regulator implementing the driver and a method which mitigate or avoid these and other disadvantages and limitations of the prior art.


REFERENCES:
patent: 4749882 (1988-06-01), Morgan
patent: 5237213 (1993-08-01), Tanoi
patent: 5440258 (1995-08-01), Galbi et al.
patent: 5550501 (1996-08-01), Ito et al.
patent: 5587677 (1996-12-01), Samani
patent: 5668500 (1997-09-01), LeFevre
patent: 5994942 (1999-11-01), Itoh

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