What are Wireless Charging Coils?

Wireless Charging Coils are electromagnetic components used to transfer power across an air gap through magnetic coupling. They operate as part of an inductive or resonant wireless power system, converting electrical energy into an alternating magnetic field that is received and converted back into electrical energy by a corresponding coil.

In wireless power systems, the electrical and physical characteristics of the coil strongly influence efficiency, alignment tolerance, thermal behavior, and achievable power levels. Coil design parameters determine how effectively energy is transferred while maintaining compliance with wireless charging standards and system-level control requirements.

Key Specifications

• Configuration: Describes the physical and electrical arrangement of the wireless charging coil. This parameter affects magnetic field distribution, coupling efficiency, and compatibility with transmitter or receiver architectures.
• Charging Standard: Identifies the wireless power transfer standard the coil is designed to support. This governs operating frequency, control signaling expectations, and interoperability with compliant power transmitters or receivers.
• Inductance: Represents the inductive value of the coil, which determines resonant behavior and power transfer characteristics. Inductance is a key factor in tuning the wireless charging system for efficient operation.
• Dynamic Contact Resistance: Describes the effective resistive losses associated with the coil during operation. This parameter influences power efficiency, thermal performance, and overall system losses under dynamic charging conditions.
• Output Power: Indicates the level of power the coil is designed to transfer to the receiving system. This affects application suitability and defines system-level power delivery capability.
• Number of Coils: Specifies how many individual coils are integrated within the component. Multiple coils can be used to improve alignment tolerance and charging area coverage.
• Number of Turns: Defines how many conductor turns are used to form the coil winding. This parameter directly impacts inductance, magnetic field strength, and electrical resistance.

The Largest Database of Wireless Charging Coils

everything PE has listed Wireless Charging Coils from the leading manufacturers and made them searchable by specification. You can enter the key parameters and the search tool will scan catalogs from the leading manufacturers to identify products that meet your spec. Once you find Wireless Charging Coils that meet your requirements, you can view product information, download datasheets or request quotations. Quotation requests will be routed to the manufacturer of the product who will get back to you directly. The quotation will also be routed to distributors of the product in your region.