Wireless Charging Kit for Compact Internet of Things and Wearables

14 August 2018

STMicroelectronics has introduced a plug-and-play wireless battery-charger development kit that helps developers to build compact wireless chargers up to 2.5W.

The kit is designed for developers of small Internet of Things (IoT) devices and wearables such as smart watches, sports gear or healthcare equipment.

Built on the STWBC-WA wireless charging-transmitter controller, the kit has a charging base unit that contains a transmitter board with the 20mm coil already connected and ready to use. Developers use software to configure the controller and monitor runtime information such as power delivered, bridge frequency, demodulation quality and protocol status.

The controller contains integrated drivers and natively supports full-bridge or half-bridge topologies for powering the antenna. The half-bridge option allows charging up to 1W with a smaller-diameter coil for small form factors. The chip supports all standard wireless-charging features such as foreign object detection (FOD) and active presence detection for safe charging as well as digital feedback to adapt the transmitted power for optimum efficiency at all load conditions, ST said.

The STEVAL-ISB045V1 kit is available now priced at $42.

To contact the author of this article, email

Powered by CR4, the Engineering Community

Discussion – 0 comments

By posting a comment you confirm that you have read and accept our Posting Rules and Terms of Use.
Engineering Newsletter Signup
Get the Engineering360
Stay up to date on:
Features the top stories, latest news, charts, insights and more on the end-to-end electronics value chain.
Weekly Newsletter
Get news, research, and analysis
on the Electronics industry in your
inbox every week - for FREE
Sign up for our FREE eNewsletter
Find Free Electronics Datasheets