Server power supply

Server, the power supply system according to the invention is connected to the PFC power input portion to meet the harmonic regulations; At least one switching stage and consisting of a DC / DC-stage which is driven by the switching stage DC / DC unit to have a switching means for switching the output voltage of the PFC voltage link capacitor portion in a predetermined operating frequency; DC / DC control unit for controlling the switching means is connected to the DC / DC section; Frequency variable circuit for detecting an output current of the link capacitor provided After obtaining the load information according to the load the frequency control signal to adjust the operating frequency of the switching means to the DC / DC controller; It may contain. Server, the switching means, the operating frequency, a link capacitor, a current detector