Title:
POWER SUPPLY CONTROL CIRCUIT, ELECTRONIC DEVICE, AND POWER SUPPLY CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2018/070306
Kind Code:
A1
Abstract:
Provided are a power supply control circuit, an electronic device, and a power supply control method which lessen deterioration of the performance of a system to be supplied with electric power. A diode OR circuit including diodes 141 and 142 outputs electric power that is supplied from a supply path having a higher voltage between a first supply path which is connected to a USB-PD adapter 3 and a second supply path which is connected to an AC adapter 2 having a capacity larger than that of the USB-PD adapter 3. A USB-PD controller 103 performs control such that the voltage of the second supply path becomes higher than the voltage of the first supply path when the voltage of the second supply path is lower than the voltage of the first supply path in a state where both the USB-PD adapter 3 and the AC adapter 2 are connected to the first supply path and the second supply path, respectively.
Inventors:
KOMIYA KAZUKI (JP)
Application Number:
PCT/JP2017/035998
Publication Date:
April 19, 2018
Filing Date:
October 03, 2017
Export Citation:
Assignee:
FUJITSU LTD (JP)
International Classes:
G06F1/26; G06F1/28; H02J7/34; H02J9/06
Domestic Patent References:
| WO2016013451A1 | 2016-01-28 |
Foreign References:
| JP2015023766A | 2015-02-02 | |||
| JPH09191241A | 1997-07-22 | |||
| JP2000029576A | 2000-01-28 | |||
| JP2014160365A | 2014-09-04 | |||
| JP2000284865A | 2000-10-13 |
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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