Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Reexamination Certificate
2005-11-29
2005-11-29
Tra, Quan (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
Reexamination Certificate
active
06970035
ABSTRACT:
A charge pump circuit for converting an input voltage to a predetermined voltage. The charge pump circuit includes switching transistors, which are connected in series between an output terminal and reference potential terminal of the charge pump circuit, and a capacitor connected to a node between the first and second transistors. The switching transistors include a first transistor connected to the reference potential terminal and a second transistor connected to the first transistor. The capacitor has a first terminal connected to a node between the transistors and a second terminal connected to a delay circuit. The delay circuit is connected between the second terminal of the capacitor and a control terminal of the first transistor. The delay circuit delays a clock signal received by the control terminal by a predetermined time and provides the delayed first clock signal to the second terminal of the capacitor.
REFERENCES:
patent: 5339236 (1994-08-01), Tamagawa
patent: 5790393 (1998-08-01), Fotouhi
patent: 6046626 (2000-04-01), Saeki et al.
patent: 6107862 (2000-08-01), Mukainakano et al.
patent: 6169444 (2001-01-01), Thurber, Jr.
patent: 09-282878 (1997-10-01), None
patent: 10-215563 (1998-08-01), None
patent: 2000-331879 (2000-11-01), None
Sanyo Electric Co,. Ltd.
Sheridan & Ross P.C.
Tra Quan
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