New Industry Products

Fully Integrated Wireless-Charging IC from STMicro Maximizes Power Transfer

February 26, 2020 by STMicroelectronics

STMicroelectronics highlights the STWLC68 product family with wireless-charging applications and industry-leading efficiency, highest power transfer, and safety.

In the age of 5G communication with the ever-increasing demand for more power and higher efficiency, STMicroelectronics’ STWLC68 product family provides the best solution for wireless-charging applications with industry-leading efficiency, highest power transfer, and safety.

ST’s newest wireless-charging products operate as both a high-power receiver and a transmitter enabling rapid power transfer and power-sharing with FOD (Foreign Object Detection) and other important ST-proprietary safety IPs.


STMicroelectronics’ STWLC68

Image courtesy of STMicroelectronics


ST’s proprietary high-voltage technology, paired with excellent mixed-signal design and highest quality assurance, enables our customers to deliver cutting-edge wireless-charging products.

The STWLC68 family of highly integrated devices needs a very low external BoM (Bill of Materials), ideal for integration in a wide range of applications from small wearables and appliances to larger ones like smartphones and tablets. Being WPC Qi 1.2.4 compliant, the STWLC68 is fully compatible with all Qi-certified devices in the market.

With its fully integrated low-impedance, high-voltage synchronous rectifier and low drop-out linear regulator, the STWLC68 achieves high efficiency and low power dissipation, critical for applications that are highly sensitive to unnecessary heat buildup.

An I2C interface allows firmware and platform parameters to be customized in the device and the configuration can be programmed into the embedded OTP. Additional firmware patching improves the IC’s application flexibility.

To serve a wider range of applications, the STWLC68 family comprises solutions suitable for the range from over 20W to 5W and below, such as the STWLC68JRH, customized to address lower-power designs.

Two evaluation-board types, STEVAL-ISB68RX and STEVAL-ISB68WA, are available to simplify prototyping with the STWLC68JRH for both standard 5W applications or PCBA-sensitive 2.5W low-power applications, respectively. The evaluation kits are easy to use, with header connectors for easy access to the GPIOs and other important signals. A USB dongle is included for configuring the device registers.

The STWLC68JRH is in production and available in a 3.29mm x 3.7mm x 0.6mm WLCPS 72-bumps 0.4mm pitch package.


About STMicroelectronics

ST is a global semiconductor leader delivering intelligent and energy-efficient products and solutions that power the electronics at the heart of everyday life. ST’s products are found everywhere today, and together with our customers, we are enabling smarter driving and smarter factories, cities, and homes, along with the next generation of mobile and Internet of Things devices. By getting more from technology to get more from life, ST stands for life.augmented.