ST’s battery chargers are specifically designed for portable consumer electronics, smartphones and wearable applications.

The portfolio includes:

  • Highly integrated linear and switch-mode chargers combined with a set of added functionalities for traditional wired charging solutions
  • Wireless battery charging solution with transmitter and receiver chip-sets optimized for different implementation requirements and ready to comply with the major wireless charging standards including Qi and PMA

They support any rechargeable lithium-ion chemistry battery providing high efficiency and enabling the design of ultra-compact charging solutions.

Wireless battery charger solution optimized for wearables

The combination of ST’s STWBC-WA wireless charging-transmitter controller and STWLC04 wireless battery-charger receiver enables power transfers up to 1 W over a coil of only 11 mm in diameter on the receiver side and 20 mm on the transmitter side for slimmer form factors.
Power-transfer capability can be increased to 3 W by using larger coils and a full-bridge circuit on the transmitter side.
This fully-featured chipset supports wireless-charging for Li-ion or Li-polymer battery chemistries and provides safety mechanisms such as Foreign-Object Detection (FOD).
You can jump-start your wireless-charging design with the plug-and-play STEVAL-ISB038V1 evaluation kit which includes receiver and transmitter boards as well as a GUI to monitor system behavior and fine-tune parameters.