POWER SWITCHING DEVICE
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United States of America Patent
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Issued Date -
Apr 19, 2012
app pub date -
Jan 11, 2011
filing date -
Oct 15, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A power switching device including a rectifier circuit and a control circuit is provided. A first terminal of the rectifier circuit receives an external voltage source and a second terminal of the rectifier circuit is electrically connected to a node. The control circuit is electrically connected between the node and a battery. Furthermore, during a power supply mode, the control circuit provides a power supply path, so that the battery provides a battery current to the node. Besides, the control circuit detects the battery current and determines whether or not to switch to a normal mode from the power supply mode according to the detection result.
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