Italian French Semiconductor ST released 100W wireless charging receiver chip

STF Semiconductor (ST for short) has launched a 100W wireless charging receiver chip, which is the highest rated wireless charging receiver chip in the industry and faces the fastest wireless charging in the current market. Using STWLC99, a new chip of Italian Semiconductor, a high-end smart phone with the largest battery capacity can be fully charged in less than 30 minutes.

Francesco Italia, general manager of Italian and French semiconductor analog customized products department, said: "Today, mobile phones are an important part of digital life, and also an important business tool for many people. Our STWLC99 can significantly improve the charging speed, improve the availability of wireless chargers, and bring more benefits to users' lives. The chip's unprecedented power processing capability has also changed the development prospects of industrial tools, medical monitoring, medicine pumps, mobile robots, unmanned aerial vehicles and other battery-powered devices, and extended the equipment The battery life is shortened. "

In addition to improving user convenience, high-power wireless charging technology can also enable designers to create industrial equipment without power sockets and power cords, bringing various benefits to end users. Cancelling the charging socket can save the space of the circuit board, strengthen the waterproof or dust-proof sealing of the equipment, and facilitate the operation in a challenging environment.

Wireless charging technology can avoid annoying wire winding problems. Independent mobile devices such as robots and unmanned aerial vehicles can be easily charged without machine or manual connection to the charging line.

STWLC99 adopts 4.859m x 4.859mm wafer level chip package (WLCSP), which is now in mass production.

Italian French Semiconductor ST released 100W wireless charging receiver chip

Technical details:

The energy-saving architecture of STWLC99 includes synchronous rectifier with low RDS (on) MOSFET and low-voltage differential voltage regulator, which transmits the electric energy received by the charger to the battery while minimizing the loss and dissipation power.

The new product conforms to Qi 1.2.4 and 1.3 specifications, supports Qi Extended Power Profile (EPP), and adopts STSuperCharge (STSC) fast charging protocol specially optimized by Italian Semiconductor. When used together with STWBC2-HP transmitter solution of Italian French Semiconductor, this receiving chip can achieve charging power of up to 100W.

STWLC99 uses on-chip nonvolatile memory to save configuration parameters, and exchanges configuration data and charging control commands through I2C interface. The chip has a full set of built-in safety protection functions, including accurate foreign matter detection for current detection, Q factor detection for transmission mode, and overcurrent, overvoltage and overheating protection.

The STWLC99 can also be used as a charging transmitter to charge other devices, with a maximum power of 25W.