Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
June 23, 2009
Patent Application Number
11489133
Date Filed
July 18, 2006
Patent Primary Examiner
Patent abstract
The present invention provides a method for preventing current overloading and saturation of a switch power supply, including one of the steps of checking whether a primary current of an transformer, and a current of an induction or a current of field effect transistor being excess an upper limit current; and a step for generating an adjusting signal so as to directly or indirectly adjust an error signal if the upper limit current is excess the upper limit, so that during subsequent pulse adjustable periods, a duty cycle is reduced, the primary current or the induction current or field effect transistor peak current value are reduced.
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