POWER ADAPTER WITH PROPORTIONAL CURRENT SHARING AND MOBILE ELECTRONIC DEVICE HAVING THE SAME

摘要

A power adapter with proportional current sharing is provided to supply power for a mobile electronic device. The power adapter includes a plurality of power modules. Each power module has a power unit, a current-sharing integrated circuit, and a shunt resistor. The power unit receives an external power source and provides an output power. The current-sharing integrated circuit is electrically connected to the power unit. The shunt resistor is electrically connected between a power output terminal of the power unit and the current-sharing integrated circuit. When the power modules are electrically connected in parallel to each other, each power units provides a connection signal to the mobile electronic device via the corresponding shunt resistor. In addition, the current-sharing integrated circuits are used to distribute output power of the corresponding power unit according to the required of the mobile electronic device.

主权项

1. A power adapter with proportional current sharing provided to supply power to a mobile electronic device, the power adapter comprising:
a plurality of power modules, each power module comprising: a power unit having a power output terminal and a signal output terminal, the power unit configured to receive an external power and generate an output power; a current-sharing integrated circuit electrically connected to the power output terminal and the signal output terminal of the power unit; and a shunt resistor electrically connected between the power output terminal of the power unit and the current-sharing integrated circuit; wherein each power module provides a connecting signal to the mobile electronic device via the shunt resistor when the power modules are connected in parallel, and the current-sharing integrated circuits proportionally control the output power of the corresponding power module to supply to the mobile electronic device according to the required power of the mobile electronic device.