Solutions for resonant wireless charging

Resonant wireless charging offers significant user advantages that make it an enticing prospect for future technology. Unlike inductive charging, resonant wireless power transfer does not require the transmitter and receiver to be physically touching, instead permitting power transference within a flexible proximal distance from the transmitter. A resonant charge also allows for multiple devices of varying size and power requirements to be charged simultaneously. This flexibility and superior user convenience will prove increasingly important as the number of wirelessly chargeable devices continues to expand.

Infineon offers a complete portfolio of components to meet the needs of the two primary topologies for a wireless resonant charging circuit: Class-D (full-bridge or half-bridge) and Class-E (single-ended or differential). Infineon also overcomes the challenges of operating at high transmission frequencies with the CoolGaN™  range of industry-leading gallium-nitride-based technology, offering exceptionally low parasitic capacitance and reduced overall system cost.