Patent ID: 7999517

Claim:
A charging control apparatus for use in a charging apparatus for use in a charging apparatus, the charging apparatus configured to receive an input power supply voltage through a relay, and to generate both an output voltage for charging a battery and an internal power supply voltage (Vdd) for operating control circuits within the charging apparatus, the relay configured to control whether or not the charging apparatus receives the input power supply voltage, the charging control apparatus comprising: a voltage control unit configured to control generation of the output voltage and the internal power supply voltage; and a relay control unit operated from the internal power supply voltage, the relay control unit configured to drive the relay such that the charging apparatus does not receive the input power supply voltage when the relay control unit detects a standby state in which the battery is not being charged, and drive the relay such that to the charging apparatus receives the input power supply voltage when the internal power supply voltage decreases below a predetermined level.