Patent ID: 7235957

Claim:
A power-supply apparatus with current-sharing control, comprising: an input terminal; an output terminal; a bus terminal, coupled to a bus to provide a bus communication interface and a current-sharing control interface; a power circuit, receiving an input voltage from said input terminal to provide an output voltage and an output current to said output terminal, wherein said power circuit generates a current-sense signal corresponding to said output current; a feedback control circuit, coupled to said output terminal, for generating a feedback signal according to an output of said power-supply apparatus and a reference signal; a control unit, coupled to said power circuit and said feedback control circuit, for controlling said power circuit according to said feedback signal to regulate said output of said power-supply apparatus; a current-sharing unit, coupled to said bus terminal and said feedback control circuit, for outputting a bus signal according to said current-sense signal and a reference voltage, and outputting said reference signal to regulate said feedback signal according to said reference voltage, said bus signal, and said current-sense signal; and a bus communication circuit, coupled to said bus, said current-sharing unit and said control unit, for monitoring and/or controlling said power-supply apparatus according to data transmitted by said bus terminal.