Induction heating device capable of reducing interference noise

An induction heating device, comprising:

• a first working coil corresponding to a first heating area;
• a second working coil corresponding to a second heating area;
• a plurality of third working coils corresponding to a third heating area, the third working coils including an inner coil and an outer coil that are concentric to share a central point;
• a first power circuitry to selectively supply power to drive at least one of the first working coil or the inner coil;
• a second power circuitry to selectively supply power to drive at least one of the second working coil or the outer coil;
• and
• a controller to manage power supplied by the first power circuitry and the second power circuitry,
• wherein, when a user instructs to activate the third heating area, the controller:
• manages the first power circuitry to continuously supply power to the inner coil and the second power circuitry to not supply power to the outer coil when a requested total output power on the third heating area is more than a maximum output power of the inner coil and when at least one of the first heating area or the second heating area is active, in order to reduce noise between the third heating area and the first and second heating areas, and
• manages the first power circuitry to supply power to the inner coil and the second power circuitry to supply power to the outer coil when the first heating area and the second heating area are inactive.