| 发明名称 | Power supply unit | ||
| 摘要 | A power supply unit, which is mounted in a host device for supplying power to a client device through a cable interposed therebetween, includes an output unit configured to generate a first output voltage from an input voltage. A controller is provided in the power supply to perform voltage feedback control on the output unit such that the first output voltage is maintained at a predetermined target value. Also, the power supply unit includes a first correction unit configured to correct the voltage feedback control at the controller such that the first output voltage is increased as a second output voltage finally supplied to the client device becomes lower, and a second correction unit configured to correct the voltage feedback control at the controller such that the first output voltage is increased as an output current supplied from the host device to the client device becomes larger. | ||
| 申请公布号 | US8816664(B2) | 申请公布日期 | 2014.08.26 |
| 申请号 | US201113250177 | 申请日期 | 2011.09.30 |
| 申请人 | Rohm Co., Ltd. | 发明人 | Fujii Masanori;Ito Tomoyuki |
| 分类号 | G05F1/00;G06F1/26;H02M3/156 | 主分类号 | G05F1/00 |
| 代理机构 | Hamre, Schumann, Mueller & Larson, P.C. | 代理人 | Hamre, Schumann, Mueller & Larson, P.C. |
| 主权项 | 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. | ||
| 地址 | Kyoto JP | ||