A wireless power receiver for receiving charging power from a wireless power transmitter includes a power reception unit configured to receive the charging power, a rectification unit configured to rectify charging power provided by the power reception unit, and output charging power in a form of Direct Current (DC), a charging unit configured to store charging power, and a power processing Integrated Chip (IC) configured to convert a voltage of the output rectified charging power, into at least one voltage, that an operation of the wireless power receiver requires, and output power having the at least one voltage. Accordingly, charging efficiency is increased.