Power supply device
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United States of America Patent
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Aug 18, 2015
Grant Date -
Apr 25, 2013
app pub date -
Feb 22, 2012
filing date -
Oct 25, 2011
priority date (Note) -
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Abstract
Disclosed herein is a power supply device. The power supply device includes a conversion unit converting an applied voltage into a predetermined level, a switching unit performing an opening operation or a closing operation to control a current flowing in the conversion unit, a sensing unit sensing an occurrence of overcurrent when a voltage applied to the switching unit is equal to or larger than a reference voltage set in advance, and a control unit performing a protection operation when the overcurrent is sensed again within a protection time set in advance after a predetermined time is delayed from the time at which the overcurrent is sensed, so that malfunction due to noise is prevented.
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