Method and apparatus for protecting wireless power receiver from excessive charging temperature

A wireless power receiver for preventing excessive temperature caused by charging, the wireless power receiver comprising:

• a power receiver configured to receive wireless power in an Alternate Current (AC) form from a wireless power transmitter;
• a regulator configured to regulate the wireless power;
• a power management unit configured to control charging by providing the regulated wireless power to a battery;
• a temperature measurement unit configured to measure a temperature of a point in the wireless power receiver during reception of the wireless power;
• and
• a controller configured to monitor the temperature of the point in the wireless power receiver by the temperature measurement unit and to provide a control signal for the wireless power receiver to be charged with a regulated charging power if a temperature measured by the temperature measurement unit exceeds a preset temperature,
• wherein the controller provides the control signal based on a difference between the preset temperature and the measured temperature for regulating charging power if the temperature measured by the temperature measurement unit exceeds the preset temperature,
• wherein the preset temperature is set below an Over Temperature Protection (OTP) temperature, and
• wherein the controller provides the control signal according to a sub-range corresponding to the measured temperature among a plurality of sub-ranges between the preset temperature and the OTP temperature.