OTG PERIPHERAL DEVICE, POWER SUPPLY METHOD, TERMINAL AND SYSTEM

摘要

Embodiments of the present invention disclose a power supply system, an OTG peripheral, a power supply method of a terminal side, and a terminal. In the power supply system, when a power supply is inserted into a power interface of the OTG peripheral, the power supply supplies power to a USB secondary device connected to a second USB interface of the OTG peripheral; and when the power supply is inserted into the power interface of the OTG peripheral, the OTG peripheral outputs a high-level pulse by using the first USB interface of the OTG, so as to trigger a terminal connected to the first USB interface to stop supplying power to the USB secondary device; and in addition, the OTG peripheral enables, after a delay of a preset safe time, the power supply to supply power to the terminal connected to the first USB interface. By means of the embodiments of the present invention, supplying power to the terminal and the USB secondary device that are connected to the OTG peripheral can be implemented without interrupting OTG communication between the terminal and the USB secondary device.