The MWCT1111CLH from NXP Semiconductors is a Wireless Power Transmitter Controller IC that has been designed to be compliant with WPC Qi specifications. It requires a supply voltage of 2.7 - 3.6 V and delivers an output power of 15 W. This transmitter consists of an on-chip relaxation oscillator, maximum core/bus clock, on-chip program flash memory size, inter-peripheral crossbar switches with AOI, external watchdog monitor, periodic interrupt timer, error-checking code block, 12-bit cyclic ADC channels, 12-bit DAC, analog comparator, and serial interfaces. It either works with the NXP touch sensing technology or uses periodically analog PING to detect a mobile device for charging while gaining super low standby power. This wireless transmitter controls the power transfer by adjusting the operating frequency, duty cycle, switching topology, or adjusting the phase difference of the power stage according to the message packets transmitted by the mobile device.
This transmitter IC supports an extended power profile (EPP) and baseline power profile (BPP) receiver design to enhance the design freedom. It also provides support for easy-to-use FREEMASTER GUI tool that allows for free configuration, calibration, and debugging functions to reduce overall time-to-market. This IC includes a digital demodulation module to reduce the number of external components, an FSK modulation module to support two-way communication, a protection module to protect the IC from over-heating, and an FOD module to prevent over-heating due to misplaced metallic foreign objects. It communicates with external devices via the general CAN, I2C, SPI, or SCI interfaces. This transmitter is available in a surface-mount package and is ideal for data buses and battery management applications.
