Advanced Qi-Compliant Transmitter ensures quicker wireless charging for Mobile Devices

By News Desk On Oct 15, 2018

The latest from STMicroelectronics (ST) is STWBC-MC 15W wireless battery-charger transmitter, which is Compliant with the latest Qi 1.2.4 specification. It can control multiple charging coils, making charging less dependent on the precise position of the battery-powered device.
The STWBC-MC is the first transmitter specifically designed to support the Qi MP-A15 EPP (Extended Power Profile) topology. In addition to detecting a valid receiver and selecting the most efficient coil for power transfer, it ensures extended Foreign Object Detection (FOD) through bi-directional communication with the receiver.

The STWBC-MC also supports the proprietary wireless fast-charge extensions of leading smartphone manufacturers. ST’s patented triple-path modulation technique for communication between the transmitter and receiver increases noise immunity and the IC’s low standby consumption minimizes wasted energy when not charging.

Users can start development quickly using the STEVAL-ISB047V1 evaluation kit for the STWBC-MC and the STSW-STWBCGUI graphical user interface for ST’s STWBC transmitter ICs. The GUI can be used to download the STSW-ISB047FW dedicated firmware for the newly launched charger, and to monitor performance and fine-tune parameters.
It is in production, priced from $3.375 for orders of 1000 pieces. The STEVAL-ISB047V1 is available now from st.com or distributors, for $170.