Overcurrent protection in a battery charger
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United States of America Patent
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Dec 26, 2017
Issued Date -
N/A
app pub date -
Jun 23, 2015
filing date -
Jan 13, 2015
priority date (Note) -
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Abstract
Systems and methods are provided for overcurrent protection in a battery charger. In certain embodiments, a method includes turning on an adapter switch to receive electrical power from an adapter connected to the battery charger; controlling a switching regulator to direct electrical current between the switching regulator and a battery port. Further, the method includes sensing a voltage drop that is related to the electrical current passing between the switching regulator and the battery port; comparing the sensed voltage drop against at least one reference voltage; and, when the sensed voltage exceeds the reference voltage, changing operation of the adapter switch to protect the battery charger from an overcurrent state.
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