Patent ID: 6084790
Filing Date: 2000-07-04
Classification: H02M

Abstract:
A current sharing circuit element for use in a power supply, comprising:a first voltage terminal;a second voltage terminal;N inductive elements having first and second terminals, where N is an integer greater than one; the first terminal of each of said N inductive elements connected to said first voltage terminal, each of said N inductive elements having a substantially similar impedance; anda first set of N power devices selected from the group consisting of switches and rectifiers, each of said N power devices coupled between a respective one of said second terminals of a corresponding one of said N inductive elements and said second voltage terminal, each of said first set of N power devices having a conductive mode with substantially similar electrical characteristics;wherein said set of N power devices are operated in phase and wherein the resistance of each said inductive element is greater than the resistance of each said power device in its conductive mode, thereby improving current sharing.