Step-up power supply unit and portable apparatus utilizing...

Details Step-up power supply unit and portable apparatus utilizing... Step-up power supply unit and portable apparatus utilizing...

2005-03-18

2008-11-18

Vu, Bao Q (Department: 2838)

Electric power conversion systems

Current conversion

With voltage multiplication means

C363S060000

Reexamination Certificate

active

07453711

ABSTRACT:
A step-up power supply unit for providing a multiplicity of different step-up voltages as needed, generated by stepping up a voltage of a single power source such as a battery. The step-up voltage of the last stage charge pump unit and the step-up voltage of at least one charge pump unit other than the last stage charge pump unit, are made available as multiple output voltages. When one or more of the output voltages are not needed, all the charge pump units subsequent to the one providing the highest output voltage are disabled based on an output voltage control signal, thereby minimizing the size and cost of the step-up circuit and reducing the power consumption by the circuit.

REFERENCES:
patent: 4523269 (1985-06-01), Baker et al.
patent: 4897774 (1990-01-01), Bingham et al.
patent: 5095223 (1992-03-01), Thomas
patent: 5132895 (1992-07-01), Kase
patent: 5187421 (1993-02-01), Naito
patent: 5424934 (1995-06-01), Tanuma et al.
patent: 5436587 (1995-07-01), Cernea
patent: 5461557 (1995-10-01), Tamagawa
patent: 5532916 (1996-07-01), Tamagawa
patent: 5912560 (1999-06-01), Pasternak
patent: 6522110 (2003-02-01), Ivanov
patent: 6563235 (2003-05-01), McIntyre et al.
patent: 6737838 (2004-05-01), Sluijs et al.
patent: 6946820 (2005-09-01), Ishii et al.
patent: 6985024 (2006-01-01), Geen
patent: 52-030470 (1977-03-01), None
patent: 07-176698 (1995-07-01), None
patent: 2002-291232 (2002-10-01), None
patent: 2003-241706 (2003-08-01), None
patent: 2003-264976 (2003-09-01), None

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