Power supply device

Details Power supply device Power supply device

2007-09-19

2010-12-14

Han, Jessica (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

C323S285000, C323S222000

Reexamination Certificate

active

07852059

ABSTRACT:
A power supply device includes an inductor controlled by switching to be charged or discharged such that a DC input voltage is boosted and a capacitor which smoothes the boosted voltage to generate a DC output voltage. Specifically, the power supply device further includes a transistor connected between the inductor and the capacitor to carry out a rectification function; an output voltage determination circuit which refers to the DC input voltage and the DC output voltage to determine the level of these voltages; and a current control circuit which controls a current flowing through the transistor such that the current has a predetermined value when the output voltage determination circuit determines that the DC output voltage is lower than the DC input voltage.

REFERENCES:
patent: 7148668 (2006-12-01), Collins
patent: 7274116 (2007-09-01), Inoue et al.
patent: 7298119 (2007-11-01), Summit et al.
patent: 7355830 (2008-04-01), Motomori
patent: 7482789 (2009-01-01), Motomori et al.
patent: 2007/0085515 (2007-04-01), Nishida
patent: 2003-319641 (2003-11-01), None
patent: 3593114 (2004-09-01), None

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