Patent ID: 8816664
Filing Date: 2014-08-26
Classification: G06F,H02M

Abstract:
1. A power supply unit mounted in a host device for supplying power to a client device through a cable interposed therebetween, the cable including a cable main body having a predetermined wiring resistor, a first connector configured to be connected to the host device, and a second connector configured to be connected to the client device, the power supply unit comprising: an output unit configured to generate a first output voltage from an input voltage and to output the first output voltage to the first connector; a controller configured to perform a voltage feedback control on the output unit such that the first output voltage is maintained at a predetermined target value; a first correction unit configured to change the voltage feedback control at the controller such that the first output voltage is increased proportionally to a second output voltage finally supplied to the client device via the second connector as the second output voltage becomes lower; and a second correction unit configured to change the voltage feedback control at the controller such that the first output voltage is increased proportionally to an output current supplied from the host device to the client device as the output current becomes larger.