Forward power converter controllers
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United States of America Patent
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Nov 9, 2010
Issued Date -
N/A
app pub date -
Apr 2, 2007
filing date -
Mar 30, 2007
priority date (Note) -
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Abstract
This invention relates to control techniques and controllers for resonant discontinuous forward power converters (RDFCs).A method of controlling a resonant discontinuous forward converter (RDFC), said converter including a transformer with primary and secondary matched polarity windings and a switch to, in operation, cyclically switch DC power to said primary winding of said transformer, said converter further having a DC output coupled to said secondary winding of said converter, said method comprising: sensing a primary winding signal during an on period of said switch, said primary winding signal representing a current in said primary winding; comparing said sensed primary winding signal with a threshold value; and controlling one or both of an on and off duration of said switch in response to said comparison.
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