Abstract: A driving circuit, an electronic device, and a controlling charging method, comprising: a first interface, used for receiving a direct-current signal inputted by an external power supply device; a second interface, used for receiving at least two pulse-width modulation (PWM) signals; and a processing circuit, used for overlaying and rectifying the direct-current signal and the at least two PWM signals so as to acquire a first direct-current signal, and outputting the first direct-current signal to a gate electrode of an MOS transistor.

Abstract: Provided are a charging circuit and an electronic device. The charging circuit includes a first switch tube and an electro-migration suppression circuit. A first end of the first switch tube is connected to a power supply, and a second end of the first switch tube is connected to a to-be-charged battery. The electro-migration suppression circuit is electrically connected to a controlled end of the first switch tube; wherein in a condition of the power supply stopping charging the to-be-charged battery, the electro-migration suppression circuit is configured to adjust a voltage difference between the second end and the controlled end of the first switch tube by adjusting a voltage on the controlled end of the first switch tube, for reducing an electro-migration amount between the second end and the controlled end of the first switch tube.

Abstract: The present application provides a charging current control method, an electronic device, and a power supply device. The method comprises: in the process of charging a battery, the electronic device determines a target impedance, wherein the target impedance comprises a first impedance and a second impedance, the first impedance is an impedance between an output of the power supply device and an input of a mainboard, the second impedance is an impedance between an output of the mainboard and an input of the battery, and the target impedance is less than a total impedance between the output of the power supply device and the input of the battery; and the electronic device sends indication information to the power supply device, wherein the indication information indicates that the power supply device adjusts an output current of the power supply device according to the target impedance.