METHOD PROVIDING SHORT-CIRCUIT PROTECTION AND FLYBACK CONVERTER UTILIZING THE SAME
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United States of America Patent
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Issued Date -
Nov 20, 2014
app pub date -
Apr 29, 2014
filing date -
May 14, 2013
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method providing short-circuit protection and a flyback converter utilizing the same wire are disclosed. The a method, adopted by a flyback converter, includes a transformer, including generating a feedback voltage according to an output voltage output from a secondary winding of the transformer; controlling a primary current through a primary winding of the transformer based on the feedback voltage; determining a sense voltage according to the primary current; determining a short circuit based on the sense voltage; setting the primary current according to a short-circuit sense voltage limit when a short circuit occurs; and setting the primary current according to a normal sense voltage limit when a short circuit does not occur.
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