DC-DC converter circuit, power supply selection circuit, and...

Details DC-DC converter circuit, power supply selection circuit, and... DC-DC converter circuit, power supply selection circuit, and...

2006-12-12

2006-12-12

Riley, Shawn (Department: 2838)

Electrical transmission or interconnection systems

Plural supply circuits or sources

Selective or optional sources

C307S082000

Reexamination Certificate

active

07148587

ABSTRACT:
In a DC-DC converter circuit having a plurality of input terminals connected to a plurality of DC power supplies, and an output terminal, the DC-DC converter circuit includes a power supply selection section for selecting a DC power supply of lowest voltage on the condition that the voltage is not less than a predetermined voltage, and a step-down type of regulator section for converting the voltage of the DC power supply selected by the power supply selection section into a predetermined voltage lower than the voltage of the DC power supply selected by the power supply selection section, and outputting the converted voltage through the output terminal.

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