Power sourcing equipment and method

摘要

Embodiments of the present invention relate to a piece of power sourcing equipment. The power sourcing equipment includes a power supply module (110), a logic device (120), a PSE chip module (130), a control signal superimposer (140), and a switch circuit (150); the power supply module (110) has multiple power supplies, and outputs a power supply alarm signal when at least one of the multiple power supplies is faulty; the logic device (120) acquires, according to the power supply alarm signal, a power supply table corresponding to a power supply fault condition of the power supply module (110), and a first signal about the power-on or power-off status is sent to the first input end of the control signal superimposer (140); the control signal superimposer (140) superimposes the first signal, with a second signal of a power-on or power-off status sent by the PSE chip module (130), and outputs a superimposing result to the switch circuit (150); and the switch circuit (150) controls power supply of the power supply module (110) to the PD.