Charging device

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United States of America Patent

PATENT NO 9252666
APP PUB NO 20140210402A1
SERIAL NO

14167179

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A charging device is configured with a power supply device and a DC-DC converter that have constant current voltage drooping type overcurrent protection characteristics and that are connected in series. A constant current value in a voltage drooping state of the DC-DC converter is lower than a constant current value in a voltage drooping state of the power supply device. The DC-DC converter is shifted to an operation state to supply a charging current of the constant current value to a charging target when a voltage value of a direct current voltage that is output from the power supply device reaches a maximum output voltage value or an approximate value thereof. Therefore, the charging target can be charged to a higher voltage even though a charging voltage of the charging target is low.

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Patent Owner(s)

  • TDK CORPORATION

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Sakita, Kouichi Minato, JP 8 20

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