Switching mode power supply with burst mode
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United States of America Patent
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Dec 20, 2016
Grant Date -
Sep 3, 2015
app pub date -
Jan 20, 2015
filing date -
Mar 3, 2014
priority date (Note) -
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Abstract
A method of operating a power supply having a transformer, a transistor controlling the current through a primary side of the transformer, and a control unit for controlling the switching of the transistor to generate current pulses in the transformer, is suggested, the method comprising receiving a feedback signal, and exiting a burst mode and entering a normal mode based on the feedback signal in case the feedback signal exceeds a first threshold value or in case the feedback signal exceeds a second threshold value for at least a first amount of time and in case the feedback signal exceeds a third threshold value, wherein the third threshold value is larger than the second threshold value and the first threshold value is larger than the third threshold value.
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