Abstract: Adaptive control method for regulating the output voltage or current of converters by causing the input current of the converter to be directly proportional to its output current (or respectively its output voltage) and inversely proportional its input voltage. In cases where the input voltage varies slowly or it is constant, the inverse proportionality to the input voltage may be omitted.

Abstract: Disclosed is a method for sensing the output current of a power source by averaging and summing instantaneous current signals generated by current sense devices installed in converters fed by the said power source.

Abstract: A method and system for providing synchronous rectification in power converters that includes controlling turnoff of a synchronous rectifier according to a timing signal representative of the switching time of a switch that is coupled to input of the power converter. Such a timing signal may be obtained directly or indirectly in various ways; for example, by sensing the voltage across the primary switch, or by sensing the drive voltage of the primary switch. Additional alternatives in an isolated converter having a transformer with a primary winding that is selectively coupled to the electrical power source includes sensing the primary winding voltage, for example, by directly sensing the primary voltage or by sensing the voltage across an auxiliary winding that is closely coupled to the primary winding.