CHARGING DEVICE AND CONTROL METHOD THEREOF
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United States of America Patent
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Issued Date -
Sep 28, 2017
app pub date -
Jun 30, 2016
filing date -
Mar 25, 2016
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Abstract
Disclosed are a charging device and a control method thereof. The charging device comprises an adapter, an energy storage unit and a charging module. The adapter provides an input current. The charging module receives the input current and provides a first charging current to charge the energy storage unit, or an output current to charge an electronic device. When the input current is higher than or equal to a preset current, the charging module works in a boost mode, such that the energy storage unit provides a second charging current to the charging module. The second charging current varies with the load of the electronic device. When the second charging current decreases to 0, the charging module turns to work in a buck mode, such that the energy storage unit is charged according to the input current.
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