Electronic device comprising protection circuitry with respect to transistor in rectifying circuitry configured to rectify alternating current signal

Power circuitry comprising:

• a port configured to receive an alternating current signal;
• rectifying circuitry configured to rectify the alternating current signal;
• and
• a capacitor configured to be charged by the alternating current signal rectified by the rectifying circuitry;
• wherein the rectifying circuitry comprises:
• a diode including an anode coupled to the port and a cathode coupled to the capacitor;
• a transistor including a drain electrode coupled to the anode and a source electrode coupled to a ground node;
• control circuitry configured to transmit a control signal to a gate electrode of the transistor based on a voltage of the drain electrode;
• and
• switching circuitry, coupled to a signal path between the gate electrode and the control circuitry, configured to change a voltage of the gate electrode to a voltage of the ground node.

A method of controlling a transistor of rectifying circuitry, comprising:

• identifying a voltage of an alternating current signal transmitted to the rectifying circuitry;
• identifying a rate of change of the voltage;
• based on identifying the rate of change being lower than or equal to a threshold rate of change, controlling the transistor based on a specified period for rectifying the alternate current signal;
• and
• based on identifying the rate of change being greater than the threshold rate of change, changing a voltage of a gate electrode of the transistor to a voltage of a ground node.