WIRELESS POWER TRANSMITTER CIRCUIT HAVING LOW POWER GROPING AND CONTROL CIRCUIT AND METHOD THEREOF

A wireless power transmitter circuit generates a wireless transmitting power during a power supply procedure, and determines whether there is a corresponding wireless power receiver circuit near by the wireless power transmitter circuit during a groping procedure. The groping procedure includes: step S, generating a first analog groping transmitting signal; step S, determining whether there is an electromagnetic inductive object near by the wireless power transmitter circuit according to an electrical characteristic related to the first analog groping transmitting signal, and when yes, proceeding to step S, otherwise proceeding back to the step S after a first predetermined period; step S: generating a digital groping transmitting signal; and step S, determining whether there is a corresponding wireless power receiver circuit near by the wireless power transmitter circuit according to a reflect signal.