Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Jing Hu0
Date of Patent
May 3, 2011
0Patent Application Number
121453380
Date Filed
June 24, 2008
0Patent Primary Examiner
Patent abstract
In accordance with an embodiment of the present invention, a method of operating a switched power supply is disclosed. The method comprises determining a current load on a secondary side of a transformer by measuring a ratio between a secondary side current conduction time and a primary switching period of the power supply and comparing the current load with a predetermined threshold. A synchronous rectification (SR) MOSFET coupled to the secondary side of the transformer is disabled if the current load is less than the preset threshold.
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