Constant voltage boost power supply

Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage

Reexamination Certificate

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Details

C327S114000, C327S535000, C363S060000

Reexamination Certificate

active

07928796

ABSTRACT:
A constant voltage boost power supply according to an aspect of the invention includes a voltage-controlled variable frequency oscillator that produces and supplies a clock signal and changes an oscillating frequency of the supplied clock signal according to an input control voltage; a charge pump into which the clock signal is fed, the charge pump performing a pumping operation in synchronization with the clock signal to boost an input voltage and supply an output voltage in which the input voltage is boosted; a voltage dividing circuit that divides the output voltage of the charge pump to supply a monitor voltage; and a differential amplifier into which the monitor voltage and a reference voltage are fed, the differential amplifier amplifying a potential difference between the monitor voltage and the reference voltage to supply the control voltage.

REFERENCES:
patent: 6356062 (2002-03-01), Elmhurst et al.
patent: 6359947 (2002-03-01), Rao
patent: 6791212 (2004-09-01), Pulvirenti et al.
patent: 7106649 (2006-09-01), Wada et al.
patent: 7253676 (2007-08-01), Fukuda et al.
patent: 7256641 (2007-08-01), Namekawa et al.
patent: 7532062 (2009-05-01), Namekawa et al.
patent: 7639067 (2009-12-01), Perisetty
patent: 2007/0181918 (2007-08-01), Wada et al.
U.S. Appl. No. 11/670,605, filed Feb. 2, 2007, Osamu Wada, et al.
Tomohiro Matsukawa, et al., “High-Efficiency Charge Pump Circuits”, The 17thWorkshop on Circuits and Systems in Karuizawa, Apr. 26, 27, 2004, 14 Pages (with English Translation).

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