Patent ID: 6815937
Filing Date: 2004-11-09
Classification: H02M,Y02B

Abstract:
A power converter comprising:an input for receiving input power; an output for providing regulated output power; one or more switching devices coupled to said input, wherein said one or more switching devices produce a voltage pulse train with variable pulse width for regulation of said output, and wherein said voltage pulse train also has a high voltage level and a low voltage level; a transformer comprising a plurality of windings, such that a first winding is coupled between said one or more switching devices and said output for conduction of current in steady state, a second winding is coupled to said input in case of a transient increase in output power, and a third winding is coupled to a low impedance in case of a transient decrease in output power; and a control circuit that is operable to sense voltage at the output and is also operable to couple said windings of said transformer in cases of a transient change in output power.