Our automotive 15W multi-coil wireless charging solution supports Qi-protocol wireless charging evaluation and includes a wireless charging module, an NFC module and a CAN communication module. It can charge phones and electronic devices that support Qi wireless charging, such as those from Apple, Huawei, Samsung and Xiaomi.
Key Points
- Based on WPC MP-A9 (NXP topology)
- 15W wireless charging platform with multi-coil free positioning and fixed frequency
- Integrated on-chip digital demodulation
- FOD support, based on quality factor (Q factor) variation and calibrated power loss calculation
- Support for multiple RX modulation signal types (AC capacitive, AC resistive and DC resistive)
- Support for low standby power consumption and ignition control logic
- Security-oriented full NFC support (RFID tag protection), personalization, BT/Wi-Fi pairing and authentication applications
- Support for additional functions such as NFC, CAN and touch sensing
- Overvoltage / overcurrent / overtemperature protection
- Software-based solution, offering maximum design freedom and product differentiation
- Power transfer efficiency above 70%
Core Components
- MCU: MWCT1013AVLH (NXP)
- NFC: NCF3340 (NXP)
- LDO: NXP, full part number available on request
- DCDC: NXP, full part number available on request
- CAN transceiver: NXP, full part number available on request
- MOSFET driver: ON, full part number available on request
- Comparator: ON, full part number available on request
- Analog switch: ON, full part number available on request
- Diode: Nexperia, full part number available on request
- Transistor: ON / Nexperia, full part number available on request
Applications
Primary applications, extended applications, automotive wireless charging, automotive-grade full-function NFC
Reference Design WCT-15W-AUTO
- 32-bit 56800EX core
- Operating frequency up to 100MHz
- Support for CAN/LIN/IIC/SCI/SPI
- Support for NFC applications
- Ultra-low quiescent current LDO, entering low-power mode when required
- Reserved CAN/UART/JTAG interfaces for easy debugging and testing
- Complete hardware design documentation
- Complete software design documentation
- Simulated operating-condition test data, full capacitor data characteristics, etc.
- High/low temperature extreme environment test data, capacitor data characteristic analysis, etc.
Functional Block Diagram
