Patent ID: 7177131
Filing Date: 2007-02-13
Classification: H02J,H02M

Abstract:
1. A control circuit of power supply with selectable current-limiting modes, wherein an overload/disable control circuit is electrically coupled to a power-output circuit and a protection circuit, and said control circuit comprises: a current-limiting set unit, electrically coupled to said power-output circuit, providing a current-limiting set value and a current-limiting setting signal according to power-output levels of said power-output circuit, and obtaining a current-limiting detect value from said power-output levels of said power-output circuit to compare with said current-limiting set value in order to determine whether to output a disable/protect signal to said protection circuit; and a current-limiting switch unit, electrically coupled to said current-limiting set unit, setting up switch junctions on said power-output levels of said power-output circuit, receiving said current-limiting set signal to determine the state of said switch junctions in order to provide current-limiting detect values of single set or multiple sets of said power-output levels for said current-limiting set unit.