公开(公告)号：US20180183248A1

公开(公告)日：2018-06-28

申请号：US15838680

申请日：2017-12-12

Applicant: ASUSTeK COMPUTER INC.

Inventor： FENG-CHI SHEN ,  TSUNG-HAN WU ,  CHIEN-CHUNG LO ,  YII-LIN WU

IPC: H02J7/00

Abstract: A charge-discharge device and a control method of the charge-discharge device are provided. The control method of the charge-discharge device comprising: receiving an input voltage signal via a configuration channel of a USB port; sampling the input voltage signal in a predetermined period to generate a plurality of sampling values; selectively connecting the configuration channel to a pull-down circuit or a pull-up circuit according to the sampling values, receiving a first charging voltage via a power channel of the USB port when the configuration channel is connected to the pull-down circuit, and outputting a second charging voltage via the power channel when the configuration channel is connected to the pull-up circuit.