With enhanced foreign object detection, secure authentication support, and a compact footprint, it’s ideal for integrating mid-power wireless charging into automotive, industrial, and consumer electronics applications.
This 22W wireless power transmitter reference design is a valuable solution for design engineers developing mid-power wireless charging in automotive consoles, industrial equipment, smart home devices, and portable consumer electronics. With its compact MP-A11 coil layout, Qi 1.3.2 compliance, and integrated foreign object detection and authentication features, it simplifies implementation of safe and standards-compliant wireless power systems. Ideal for space-constrained designs, it helps engineers accelerate prototyping, ensure regulatory readiness, and reduce development cycles in high-demand applications.
The MP-A11 Fixed Frequency Wireless Power Transmitter Reference Design by NXP Semiconductors (WCT-15W1CFFPD) is a highly efficient and compact solution tailored for mid-power wireless charging applications, supporting up to 22 watts. Built around NXP’s industry-proven wireless charging controller ICs, this reference design is compliant with the Wireless Power Consortium (WPC) Qi 1.3.2 specification and is ideal for developers seeking to build reliable, standards-based transmitters. Its core functionality is based on the MWCT1013A controller, which integrates a 32-bit Arm Cortex-M0+ MCU with dedicated peripherals for power transfer control, offering precise full-bridge control, foreign object detection (FOD), and real-time communication with the receiver device.
This fixed-frequency design supports a single transmitter coil operating at 127.7 kHz with MP-A11 configuration. It achieves a compact form factor and reduced electromagnetic interference (EMI) thanks to optimized PCB layout and careful component selection. The solution is engineered to deliver stable power performance across various receiver positions and alignments, enabling flexible product integration into automotive, industrial, or consumer designs. Enhanced FOD mechanisms ensure user safety and compliance with regulatory requirements by accurately detecting metallic foreign objects and halting power transfer as needed.
It integrates high-efficiency power stage components, including N-channel MOSFETs driven by gate drivers, and a synchronous rectification architecture on the receiver side. It also includes an NFC interface to support Qi authentication, enabling OEMs to develop secure systems in line with the Qi 1.3 standard’s authentication requirements. Additionally, the firmware stack provided with the design is pre-certified and optimized for faster time-to-market, supporting OTA updates and system diagnostics via UART or I²C.
Engineers benefit from access to comprehensive design files, including schematics, BOM, PCB layout, and firmware source code, enabling customization and easy adoption in commercial products. The design is also supported within NXP’s MCUXpresso development ecosystem, ensuring ease of development, debugging, and deployment. This robust platform allows designers to evaluate performance and functionality under real-world conditions and adapt the design to their product-specific needs with minimal development overhead.
NXP has tested this reference design. It comes with a bill of materials (BOM), schematics, assembly drawing, printed circuit board (PCB) layout, and more. The company’s website has additional data about the reference design. To read more about this reference design, click here.
