Method and apparatus for power converter fault condition detection
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United States of America Patent
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Jun 30, 2015
Grant Date -
Sep 4, 2014
app pub date -
May 15, 2014
filing date -
Apr 6, 2007
priority date (Note) -
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Abstract
A controller includes a control, a sensor, and a fault detector. The control is configured to control a switch to regulate an output of the power converter. The sensor receives a signal from a terminal of the controller that is representative of an input voltage during an ON state of the switch and is representative of an output voltage during an OFF state of the switch. The sensor is configured to sample the signal from the terminal during the ON state to generate a first sample signal and to sample the signal from the terminal during the OFF state to generate a second sample signal. The fault detector detects a fault condition in response to either the first or the second sample signals. The control inhibits the switching of the switch to reduce a power output level of the power converter in response to the fault condition.
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