Scalable wireless charging platform with Qi-compliant and configurable controllers

Infineon Technologies AG has launched the WLC1115 transmitter controller ICs: the first product of the new WLC family of controllers for inductive wireless charging. It comes with a Qi v1.3.2 certified MP A11 power transmitter reference solution, targeting different applications, including smartphones, smart speakers, monitor stands, docking stations, and industrial or healthcare accessories.

"The WLC1115 transmitter controller IC and companion reference design for wireless charging is the ideal choice for a wide range of consumer and industrial applications that demand state-of-the-art Qi-standard compliance," said Ajay Srikrishna, senior vice president and general manager of the Wired Connectivity Solutions Product Line at Infineon. "As inductive wireless charging standards evolve, our programmable solution will offer the flexibility to scale higher power levels and allow OEMs to materialise differentiated features while remaining Qi-compatible."

The device is a highly integrated, Qi-compliant, and fully configurable 15W transmitter controller IC for wireless charging solutions. It comprises a USB-PD/PPS sink, DC-DC controller, gate drivers for DC-DC, a full-bridge inverter, sensing peripherals, and configurable flash memory. It supports a broad input voltage range from 4.5V to 24V, multipath voltage- and current-based ASK demodulation. Furthermore, the controller features an integrated, programmable, high-side current-sense amplifier and adaptive FOD via Q-factor, resonant frequency, and power loss. It also incorporates comprehensive protection features for UVLO, OVP, OCP, and OTP that are programmable.

The EPP transmitter solution using OPTIGA Trust Charge meets the authentication requirements as specified in the Qi v1.3.2 standard. Together with the company's comprehensive providing for USB-C chargers and broad MOSFET portfolio, the solution provides a complete product package that can assist to meet the stringent regulatory and compliance needs. Furthermore, it is accompanied by software tools that support Qi v1.3.2 and proprietary charging protocols.