This wireless charging transmitter chip integrates communication, power drive, frequency control, charging status indication, foreign object detection, over-temperature protection, and over-current protection, so the peripheral devices are simplified, and the flexible parameter configuration makes the whole machine more reliable and the application more flexible and concise. It has more advantages and higher efficiency in the application of small-volume products. The application scope is wide: digital products (smart watches, bracelets, headphones, etc.), and various handheld products that need to be waterproof, have exquisite appearance and convenient charging.