Device for supplying power to external device and method therefor
Disclosed is an electronic device. The electronic device may include a plurality of interfaces each of which is connected to one peripheral electronic device in a wired manner to deliver power to the connected peripheral electronic device, a power supply circuit connected to the plurality of interfaces, and a control circuit including a plurality of pins each connected to one interface to allow the power supply circuit to supply power to the plurality of interfaces. In addition, various embodiments understood from the disclosure are possible.
1. An electronic device comprising:
a plurality of interfaces each configured to be connected to one peripheral electronic device in a wired manner to deliver power to the connected peripheral electronic device;
a power supply circuit connected to the plurality of interfaces; and
a control circuit including a plurality of pins each connected to one interface to allow the power supply circuit to supply power to the plurality of interfaces,
wherein the control circuit is configured to:
determine a first maximum charging current capable of being supplied to a first peripheral electronic device connected to a first interface of the plurality of interfaces; and
determine a second maximum charging current capable of being supplied to a second peripheral electronic device connected to a second interface of the plurality of interfaces.
2. The electronic device of claim 1 , wherein the plurality of pins is configured to obtain information on the connected peripheral electronic device.
3. The electronic device of claim 1 , wherein the control circuit is configured to determine the first maximum charging current and the second maximum charging current to be different values.
4. The electronic device of claim 1 , wherein the control circuit is configured to increase the second maximum charging current when recognizing disconnection of the first peripheral electronic device.
5. The electronic device of claim 1 , wherein he control circuit is configured to:
perform a first procedure for determining power to be supplied from the power supply circuit when recognizing connection of a first peripheral device, and
initialize settings related to the first procedure and perform a second procedure for determining power to be supplied from the power supply circuit when recognizing connection of a second peripheral device to the second interface in a state where the first peripheral device is connected.
6. The electronic device of claim 1 , wherein a sum of the first maximum charging current and the second maximum charging current is less than or equal to a value of a maximum charging current capable of being supplied by the power supply circuit.
7. The electronic device of claim 1 , wherein the control circuit is configured to receive information on a battery status from a peripheral electronic device connected to a first interface of the plurality of interfaces and determine at least one of a first maximum charging current or a maximum power to be supplied to the peripheral electronic device connected to the first interface based on the information on the battery status.
8. The electronic device of claim 7 , wherein the control circuit is configured to transfer information on the first maximum charging current to the peripheral electronic device connected to the first interface.
9. The electronic device of claim 7 , wherein the control circuit is configured to receive the information on the battery status through a bi-phase mark code (BMC).
10. The electronic device of claim 7 , wherein the information on the battery status includes at least one of battery remaining capacity information and power information necessary for the peripheral electronic device.
11. The electronic device of claim 3 , wherein the control circuit is configured to determine the first maximum current and the second maximum current based on a number of peripheral electronic devices connected to the electronic device.
12. The electronic device of claim 1 , wherein the power supply circuit is configured to supply power via VBUS.