Semtech LinkCharge® Platform Adopted for 22mm Distance Wireless Smartphone Charger

January 15, 2019 by Scott McMahan

Semtech Corporation reported that Shanghai Magway Magnetic has adopted its LinkCharge® wireless charging platform in its first commercial 22mm long distance smartphone wireless charger. According to Semtech, the LinkCharge integrated circuit (IC) chipset can wirelessly charge major brand smartphones with a gap of 10mm to 22mm. It also supports fast charging modes of major smartphones, which dramatically reduces charging time.

The solution uses the company's patent-pending short distance protection that adjusts the transmit power when the receiver is placed closer to the transmitter. Also, it features smart foreign object detection (FOD), a safety feature that prevents metal objects from heating up when placed between the transmitter and smartphone. The company claims that these features make the LinkCharge platform a perfect solution for furniture and public infrastructure applications.

"By using Semtech's LinkCharge technology in our new products, we have greatly simplified the installation process of sub-surface charging modules for our customers in the furniture and infrastructure businesses," said Justin Fang, CEO of Shanghai Magway Magnetic Co., Ltd. "Our solution is now a plug and play solution that can be seamlessly integrated with furniture tops. We envision a future where cables and power banks are obsolete, and our commercial 22mm long distance smartphone wireless charging solutions are available everywhere."

"Semtech provides a highly differentiated solution to the smartphone wireless charging market. By enabling longer charging distances, consumers will enjoy the freedom of being able to quickly charge their mobile phones wherever they go," said Francois Ricodeau, Sr. Product Line Manager for Semtech's Wireless and Sensing Products Group.

Key Features of Shanghai Magway Magnetic (MGWTLX15-A21X):

  • Z-gap distance range: 10mm to 22mm
  • Compatible with major brand wireless charging enabled smartphones
  • Maximum deliverable power: up to 10W
  • Efficiency at a maximum distance: >60%
  • Foreign object detection
  • Short distance protection

Semtech's LinkCharge wireless charging platform includes the LinkCharge 40 Series, the LinkCharge 20 Series, the LinkCharge CT Series, and the LinkCharge LP. The LinkCharge platform is compatible with the major industry standards ensuring end products can quickly charge any wireless charging-equipped device even as the industry adoption continues to grow and evolve. More information about the LinkCharge platform and the rest of Semtech's wireless charging solutions is available at