Automotive Wireless charging Solution with integrated NFC Communication for Smartphone charging
Combining the Wireless Power Transmission control IC (BD57121MUF-M) from ROHM semiconductors and the 8-bit Microcontroller (STM8A) from STMicroelectronics, a new automotive grade AEC-Q100 qualified wireless charging solution has been announced. This charging technology can be adopted any automotive to charge portable devices like Smartphone on the run wirelessly.
The charger can provide up to 15W of output power and also features a multi-coil design. Meaning the user need not be very conscious about placing their smart phone in one particular orientation to get it charged. At present, Qi, the most popular standard for wireless charging, and it has already been adopted by the European Automotive Standards Group (CE4A) as the charging standard in vehicles, and by 2025 it is predicted that most cars will be equipped with Qi-based wireless chargers. This Wireless charging technology also combines Qi with NFC to automatically detect the user inside the car. Based on which the car could align seat or mirror positions and even allow an engine start.
- Foreign object detection (using NFC cards)
- NFC can control the infotainment system of the car via device authentication
- Achieves system sharing via personnel authentication
An Evolution board called the BD5712MUF-M is under production and will be available from April 2019. The datasheet of the same can be found below. A reference board integrating this solution will be exhibited at the 11th International Car Electronics Technology Show at Tokyo Big Sight from January 16-19, 2019.