Overvoltage protection circuit for wireless power receiver

A wireless power receiver, comprising:

• an inductor coil configured to be magnetically coupled with a wireless power transmitter to wirelessly receive power from the wireless power transmitter;
• a rectifier that generates a rectified output voltage at an output port of the receiver;
• a resonance network connected between the inductor coil and the rectifier;
• clamp circuitry connected at least one of the output port and the resonance network;
• comparison circuitry that compares a feedback signal based on the rectified output voltage to at least one reference signal;
• and
• control circuitry that selectively controls the clamp circuitry based on at least one comparison signal received from the comparison circuitry, wherein:
• if the feedback signal is greater than a first reference voltage level, then the control circuitry controls the clamp circuitry to perform a first operation to reduce the rectified output voltage;
• and
• if the feedback signal is greater than a second reference voltage level that is greater than the first reference voltage level, then the control circuitry controls the clamp circuitry to perform a second operation different from the first operation to reduce the rectified output voltage.