The WLC1150-68LQXQT from Infineon Technologies is a Wireless Charging Transmitter IC that is compatible with the WPC Qi 1.3.x specifications. It uses Infineon’s high-power proprietary protocol mode to deliver an output power of up to 50 W and supports robust ASK/FSK communication. This transmitter IC consists of a built-in microcontroller with integrated ARM Cortex-M0 Core 128 KB flash, 16 KB SRAM, and 32 KB ROM, integrated digital blocks, buck-boost controller, programmable I/O matrix, GPIOs, wireless controller with integrated power delivery (PD), and USB PD legacy charging protocols. It is a cost-effective solution that addresses critical system needs of high-power applications such as thermal, EMI, foreign object detection (FOD), high efficiency, inverter control, and others.
This wireless charging IC supports extended power profile (EPP), basic power profile (BPP), and other proprietary power delivery extensions (PPDE). The IC also includes a fully programmable MCU with analog and digital peripherals to enable scalable wireless charging solutions. It is compatible with various types of input configurations to address a wide range of high-power applications and supports systems with input power either from a USB PD/PPS or fixed input from a DC power supply. It supports the input configurations without requiring a front-end DC-DC converter, which helps the IC in achieving a significantly high system gain.
This transmitter IC requires a DC supply from 4.5 V to 24 V. It has integrated over-current protection, over-voltage protection, and over-temperature protection functions to prevent abnormal conditions. The WLC1150-68LQXQT has a buck controller for a fan that enables cooling of the surface of the interface when high power is delivered. It is available in a surface-mount package that measures 8.00 x 8.00 x 0.65 mm and is ideal for docking stations, smartphone chargers with Qi EPP (up to 15 W), vacuum cleaners, robotics, drones, and industrial wireless charging applications.