Events News

Say goodbye to wires with 40W wireless charging technology

6th January 2017
Alice Matthews


Semtech Corporation has announced its advanced, high power LinkCharge 40 Series of wireless charging transmitters and receivers that support applications requiring up to 40W of power.

“The addition of this 40W, highly differentiated, ultra-high power wireless charging capability to Semtech’s LinkCharge platform makes our robust and scalable wireless charging technology available for products of all sizes and power requirements,” said Ruwanga Dassanayake, Product Line Manager for Semtech’s Power and High-Reliability Products Group. “One of the unique features that sets LinkCharge 40 apart is that its transmitter is backwards compatible, supporting Qi-enabled phones while maintaining small form factor at both ends of the solution.”

The high power system architecture of the LinkCharge 40 uses a flexible firmware-based approach and proprietary communication protocol between the transmitter and receiver at 40W and uses the WPC (Wireless Power Consortium) or Qi standard protocol at lower power.

“Implementations of the latest Qi specification deliver up to 15 watts of wireless power,” said Menno Treffers, Chairman of the Wireless Power Consortium. “Semtech now demonstrates that it is possible to deliver considerably more power while maintaining compatibility with existing Qi power receivers. We welcome this extension to the Qi ecosystem.”

Key features:

  • 40W of output power with proprietary communication protocol
  • Backward compatible with Qi transmitter up to 15W of power
  • High DC/DC efficiency at 85%
  • Flexible, programmable firmware-based solution for quicker time-to-market and to accommodate the evolution of industry standards
  • 19Vout/2A at the receiver
  • Capable of supporting multiple coil configurations
  • Supports dynamic loads

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