Protection circuit and electronic device using the same
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United States of America Patent
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Mar 22, 2016
Grant Date -
Sep 11, 2014
app pub date -
Apr 30, 2013
filing date -
Mar 5, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
An exemplary protection circuit is provided to provide a controlled, latency-free, steady voltage. The circuit includes a switch module, an induction, a response module, a protection chip, and a sequence controller. The protection chip turns on the switch module when the voltage provided by a capacitor is less than a threshold voltage, thus the connection between the power supply device and the conversion circuit is enabled. The protection chip further outputs a high level signal to the sequence controller upon receiving an induction signal from the induction module. The sequence controller outputs a low level signal to the response module upon receiving the high level signal, to turn off a connection between the first end of the capacitor and ground, otherwise, a high signal is output to turn on the connection between the first end of the capacitor and ground.
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