ST claims fastest 50-W Qi wireless-charging IC

November 06, 2020 // By Jean-Pierre Joosting
STMicroelectronics STWLC88 50-W Qi wireless-charging IC
This state-of-the-art 50-W wireless-charging IC is two times faster than the previous-generation device and reduces the the external BoM.

Claiming to be the fastest Qi wireless-charging IC available, the STWLC88 from STMicroelectronics delivers as much as 50-W of power. It enables consumers to charge smartphones, tablets, laptops, and other personal electronic devices without cables as safely and nearly as quickly and efficiently as they could by plugging them in. The state-of-the-art 50-W wireless-power IC charges smartphones two times faster than the previous-generation device.

The STWLC88 incorporates multiple circuits to substantially reduce the external BoM (Bill of Materials), making it ideal for integration in a wide range of applications with restrictive PCB area requirements. Being WPC Qi 1.2.4 EPP compliant, the STWLC88 is fully compatible with all Qi EPP certified transmitters in the market. As a result, the STWLC88 offers state-of-the-art features that are critical for performance and safety and is ideal for medium- to high-power wireless-charging applications.

Safe, wireless delivery of high power to charge personal electronics must address a range of challenges including efficiency, reliable communication, Foreign Object Detection (FOD), and thermal, over-voltage, and over-current protection. A long-standing member of the Wireless Power Consortium, ST has spent years crafting products on top of the industry-standard Qi wireless power-transfer system to address these challenges beyond the standard with patented hardware, cutting-edge signal processing algorithms, and the proprietary ST SuperCharge (STSC) protocol. Together these enhancements allow ST customers to utilize the complete turnkey Tx/Rx consisting of the STWLC88 and the STWBC2 digital controller to achieve high power efficiently and safely, while remaining compliant with Qi specifications.

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