In a wireless battery charging system, power is transferred by electromagnetic induction (inductive power transfer) between a transmitting pad - or dongle (TX) - and the battery-powered device (RX), such as a smartphone, smartwatch or sports gear. The power transmitter unit controls the current in the transmitting coil to transfer the correct amount of power as required by the receiver unit that continuously provides this information to the transmitter by modulating the transmitter carrier frequency through controlled resistive or capacitive load insertion. Generating the correct amount of power guarantees the highest level of end-to-end energy efficiency and helps limit the device's operating temperature. Wireless chargers are expected to become ubiquitous in hotels, airports, cafes and other public places as they enable to top up the batteries of portable and wearable devices, letting the user forget about cables. Read more
Our products and solutions
我们拥有一系列无线电池充电解决方案，包括具有低待机功耗的发射器和接收器，以及异物检测（FOD）等功能。意法半导体还提供评估和开发工具以及参考设计，帮助开发符合最常见无线充电标准（包括Qi和AirFuel）的紧凑型高效无线充电器。
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