As wireless power transfer technology continues to mature and user awareness increases, the reliability and robustness of these wireless charging systems continues to improve. In addition to enabling systems to be waterproof so they are easier to clean and sterilize, new applications such as medical equipment and drones are beginning to emerge.

As one of the world's leading suppliers of power management solutions, ST offers wireless battery charger ICs  addressing all major standards and technologies, with a complete portfolio of both transmitter and receiver chip-sets optimized for different implementation requirements and ready to comply with the major wireless charging standards including Qi by Wireless Power Consortium (WPC) and AirFuel.

The STWBC family of transmitter ICs performs all the functions for transmitter control, ensuring compliancy with the leading standards in the market and providing customers with a turnkey Qi-certified solution, for a fast go-to-market strategy, or with an environment to build personalized solutions. Efficient power transfer is enhanced by a smart standby state while waiting for a receiver, which guarantees a power consumption as low as 3 mW while maintaining the foreign object detection (FOD) function active for maximum safety.

The STWLC family of receiver ICs meets all the requirements of the growing consumer market providing a flexible solution interoperable with Qi and AirFuel Inductive charging standards. STWLC family is able to efficiently charge any battery chemistry like single-cell Li-Polymer/ Li-Ion and support direct charging, transmitter functions is also integrated. An embedded 32-bit microcontroller and integrated non-volatile memory allow a very wide range of customization. All this come in a minuscule footprint chip-scale package, ideal for space-constrained portable applications.

To support customers in building their applications and minimize the time-to-market, a complete development ecosystem is available including certified reference design boards, API libraries and documentation to customize software, and graphical user interfaces to access to real-time data and configurable parameters.

Wireless charger ICs

New multi-mode Qi/AirFuel Inductive wireless power Rx/Tx solution

The STWLC33 is a highly-integrated wireless power receiver with transmitter functions targeting 15 W applications. It meets all the requirements of the growing consumer market providing a flexible solution interoperable with Qi 1.2 and AirFuel Inductive charging standards.

It provides state-of-the art performance in terms of efficiency, safety and flexibility. The STWLC33 allows the fast charging of mobile devices and can be used as a transmitter with power transfers up to 5 W towards wearable accessories.