Wireless-Charging IC Maximizes Power Transfer and Charging Efficiency

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  • Programmable output voltage with 25 mV resolution
  • Qi 1.2.4 inductive wireless standard communication protocol compliant

In the age of 5G communication with an ever-increasing demand for more power and higher efficiency, STMicroelectronics’ STWLC68 product family provides the best solution for wireless-charging applications with up to 80% efficiency, high power transfer and safety.

The new product family can operate both as a high-power receiver and a transmitter for enabling rapid power transfer and power-sharing with FOD (Foreign Object Detection) and other IPs. ST’s proprietary high-voltage technology, paired with excellent mixed-signal design and high-quality assurance, enables the customers to deliver cutting-edge wireless-charging products. 

Supports Qi standard and minimises BOM

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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. It’s compliance with WPC Qi 1.2.4 standard and compatible with all Qi-certified devices in the market. 

High efficiency and low power dissipation

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. 

Targets a wide range of applications

To serve a wide 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.

Simplify prototyping with evaluation boards

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.

Availability

The STWLC68JRH is in production and available in a 3.29mm x 3.7mm x 0.6mm WLCPS 72-bumps 0.4mm pitch package, priced from US$2.0 for orders of 10,000 pieces.


 

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