Power supply device capable of supplying large amount of...

Details Power supply device capable of supplying large amount of... Power supply device capable of supplying large amount of...

2007-02-26

2010-06-08

Patel, Nitin C (Department: 2116)

Electrical computers and digital processing systems: support

Computer power control

C399S088000

Reexamination Certificate

active

07734937

ABSTRACT:
A power supply device includes a first power-supply unit to input external power and to output first power supplying a predetermined constant voltage to a load, a second power-supply unit to accumulate charge and to output second power to the load in parallel with the first power being supplied from the first power-supply unit, and a controller to output a control signal to prevent the second power-supply unit from supplying power in case of a current increase due to a dynamic load change, and to cause the first power-supply unit to supply power for the dynamic current increase. The first power-supply unit supplies power having a current value smaller than a predetermined maximum current of the first power-supply unit. The second power-supply unit supplies power for a shortfall current exceeding the predetermined maximum current of the first power-supply unit.

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U.S. Appl. No. 11/679,522, filed Feb. 27, 2007, Yano.

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