Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Synchronizing
Reexamination Certificate
2000-11-08
2002-09-24
Cunningham, Terry D. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Synchronizing
C327S159000
Reexamination Certificate
active
06456131
ABSTRACT:
TECHNICAL FIELD OF THE INVENTION
This invention relates to electronic circuits for controlling voltage, and more particularly relates to low power circuits for controlling voltage.
BACKGROUND OF THE INVENTION
Numerous applications exist where it is necessary to have a controlled voltage and/or a constant voltage. In addition, low power consumption of circuits has in recent years become a matter of particular focus, as more and more electronic devices are being made portable, thereby having to rely on battery power. A number of circuits provide relatively low power controlled and/or constant voltage, but there is a need for improvement in gate count and overall power consumption.
SUMMARY OF THE INVENTION
The present invention provides a charge pump circuit. The circuit includes an input node for receiving a clock signal having cycles. The charge pump circuit includes a pump circuit coupled to the input node, including a first capacitor and having an output node coupled to a second capacitor, the pump circuit operating to provide a predetermined charge the second capacitor in response to a cycle of the clock signal. The predetermined charge corresponds to the amount of charge accumulated on the first capacitor during the cycle of the clock signal.
These and other features of the invention will be apparent to those skilled in the art from the following detailed description of the invention, taken together with the accompanying drawings.
REFERENCES:
patent: 3777276 (1973-12-01), Klein
patent: 4750193 (1988-06-01), Bailey
patent: 5473275 (1995-12-01), Hughes et al.
patent: 5473283 (1995-12-01), Luich
patent: 5793231 (1998-08-01), Whittaker
patent: 5912575 (1999-06-01), Takikawa
Brady III W. James
Cunningham Terry D.
Moore J. Dennis
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