An electronic device includes a voltage converter configured to provide an output having an output voltage value and an output current value. The electronic device also includes a handshake control unit a handshake control unit, coupled to the voltage converter, configured to perform a handshake process for a charging voltage value and receive a matching result of the handshake process. The electronic device further includes a matching management unit, coupled to the handshake control unit, configured to send a first request for resuming matching to the handshake control unit in response to the matching result as being failed.