Wireless power transfer system and driving method thereof
AssigneeFairchild Korea Semiconductor Ltd.
InventorsSangCheol MOON, Gwanbon KOO
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Abstract
A wireless power transmission system according to an exemplary embodiment of the present invention transmits power from a primary side to a secondary side, and includes: a secondary coil provided at the secondary side; a capacitor and a control switch electrically coupled in series between lateral ends of the secondary coil; and a regulation controller controlling a switching operation of the control switch according to a result of comparison between a control signal synchronized by a frequency at the primary side and a feedback signal corresponding to an output of the wireless power transmission system.
Claims10
A wireless power transmission system, comprising:
- a secondary coil provided at a secondary side;
- a capacitor and a control switch electrically coupled in series between lateral ends of the secondary coil;
- and
- a regulation controller configured to control a switching operation of the control switch according to a result of comparison between a control signal synchronized by a frequency at a primary side and a feedback signal corresponding to an output of the wireless power transmission system.
A driving method of a wireless power transmission system, comprising:
- generating a control signal using a current flowing to a secondary side;
- generating a feedback signal corresponding to an output of the wireless power transmission system;
- and
- controlling impedance at the secondary side according to a result of a comparison between the control signal and the feedback signal.
Dependencies are inferred from the claim text.