公开(公告)号：US20180205243A1

公开(公告)日：2018-07-19

申请号：US15851995

申请日：2017-12-22

Applicant: ASUSTeK COMPUTER INC.

Inventor： Wei-Gen Chung ,  CHIEN-CHUNG LO ,  Ming-Ting Tsai ,  Yue-Han Wu ,  TSUNG-HAN WU

IPC: H02J7/00

CPC classification number: H02J7/0029 ,  H02J7/0052 ,  H02J2007/0039 ,  H02J2007/0062

Abstract: A charging protection device comprises a universal serial bus (USB) interface, a resistance circuit, a detection circuit and a control circuit. The universal serial bus interface includes a configuration channel. The resistance circuit includes a pull-down resistor coupled between the configuration channel and a ground GND. The detection circuit is configured to detect an abnormal charging condition. The detection circuit generates an abnormal signal when the abnormal charging condition occurs. The control circuit is coupled to the detection circuit and configured to change a voltage value on the pull-down resistor to be out of a preset voltage range according to the abnormal signal.

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.