Power supply circuit with a control terminal for different functional modes of operation
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United States of America Patent
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Nov 13, 2012
Grant Date -
Aug 11, 2011
app pub date -
Feb 10, 2010
filing date -
Feb 10, 2010
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method of operation for flyback power converter includes operating a controller of the flyback power converter in a regulation mode when a control signal is below a first threshold. The control signal is provided as an input to a terminal of the flyback power converter. When the control signal is below a second threshold and above the first threshold, the controller is operated in a limiting mode. The controller is operated in an external command mode when the control signal is below a third threshold and above the second threshold. Lastly, when the control signal is above the third threshold, the controller is operated in a protection mode.
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