This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Wireless charging (Tx) using PCB inductor

Other Parts Discussed in Thread: BQ500212

Hi,

I am currently designing a wireless charger (based on BQ500212 component).

The mechanical contraints of the product and the cost of wireless inductors, lead me to that question :

Would it be possible to design a PCB inductor on my PCB, having acceptable features?

The current needed on the receiver side is quite low (< 0.5A), and the distance between both inductors is lower than 5mm.

Has anyone designed a PCB inductor in this application ?

Thank you per advance

Regards

Nicolas

  • I have not seen a working TX PCB coil solution.
    Requirement for the TX coil is a low DC resistance due to high circulating in the L & C tank ckt.
    For a wire wound coil the low DC resistance is easy to get but a PCB coil will require multiple layers. As layer count goes up the PCB coil is less cost competitive.