Electric power conversion systems – Current conversion – With voltage multiplication means
Reexamination Certificate
2008-07-01
2008-07-01
Laxton, Gary L (Department: 2838)
Electric power conversion systems
Current conversion
With voltage multiplication means
C327S536000
Reexamination Certificate
active
07394673
ABSTRACT:
A first charge pump circuit converts an input voltage (Vin) into a predetermined voltage, to be outputted as a first output voltage (Vout1). A second charge pump circuit converts the first output voltage (Vout1), outputted from the first charge pump circuit, into a predetermined voltage, to be outputted as a second output voltage (Vout2). A control circuit controls charge-discharge states of the first charge pump circuit and the second charge pump circuit. The control circuit synchronously controls a state in which a first output capacitor of the first charge pump circuit is charged, and a state in which a second flying capacitor of the second charge pump circuit is charged.
REFERENCES:
patent: 6525949 (2003-02-01), Johnson et al.
patent: 7009445 (2006-03-01), Ishii
patent: 7221573 (2007-05-01), Kwean
patent: 2001-258241 (2001-09-01), None
Oyama Manabu
Uchimoto Daisuke
Cantor & Colburn LLP
Laxton Gary L
Rohm & Co., Ltd.
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