IDT has released a reference kit intended for designing wireless charging into smartwatches, fitness monitors and other wearables. The wireless power reference kit includes a Qi-based transmitter and receiver for designs necessitating 3W or less.

Geared for applications ranging from 0.5W to 3W, the transmitter (P9235A-R) and receiver (P9027LP-R), support three different coil size options for various applications, form factors and power levels.

Reference design materials include user manuals, layout guides, layout instantiation modules, schematics, bill-of-materials (BOM) and Gerber files. Delivering peak 80% system efficiency at 3W, the kit offers seamless integration with the drop-in reference layout provided, and an optimised thermal design, indicated the company.

The wireless power kit containing the transmitter, receiver and additional coils is available for $70.