公开(公告)号：EP4148954A1

公开(公告)日：2023-03-15

申请号：EP21818054.5

申请日：2021-03-03

申请人： Huawei Technologies Co., Ltd.

发明人： HONG, Liang ,  PEI, Changsheng

IPC分类号： H02J50/12 ,  H02J50/80 ,  H02J7/02 ,  H04B5/02

摘要： An electronic device and a control method for the electronic device are provided, and relate to the field of wireless charging technologies, to improve compatibility of a power receiving terminal device in wireless charging with a power transmitting terminal device by improving ASK communication quality. The electronic device includes a device circuit (50), a voltage conversion circuit (203), a rectifier circuit (202), a resonant circuit (201), and a modulation circuit (204). The resonant circuit (201) includes a resonant inductor (L2) and a resonant capacitor control circuit (ci1) connected in series to the resonant inductor (L2). A first end of the resonant inductor (L2) is coupled to the rectifier circuit (202), a second end of the resonant inductor (L2) is coupled to a first end of the resonant capacitor control circuit (ci1), and a second end of the resonant capacitor control circuit (ci1) is coupled to the rectifier circuit (202). The resonant capacitor control circuit (ci1) is configured to adjust a capacitance value of a resonant capacitor connected to the resonant circuit (201).