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Microchip 15W Multi-Coil Wireless Power Transmitter

Part Number: 15W_Multi-Coil_Wireless_Power

**For development reference only, not a product for sale**

Summary:

The Three Coil Wireless Power Transmitter is based on the dsPIC33CH128MP506 device and implements a fixed frequency power control topology. The front-end buck-boost control is managed by the dsPIC33CH device. The transmitter includes CAN for ease of integration into the automotive environment. The transmitter also enables the implementation of NFC.

Microchip’s dual-core dsPIC33CH

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Product Features

    Key features of the Wireless Power Transmitter

    • 15W Three Coil Transmitter
    • Power-loss and Q-Based based Foreign Object Detection
    • Transmitter based on fixed frequency topology control.
    • Front-end Buck-Boost Control managed by MCU that manages wireless power
    • CAN-FD hardware/software for easy integration into the automotive environment
    • Ability to integrate NFC for card detection/protection and out of band communication
    • LED bank for power level indication, and power transfer status indication

    Key features of the dsPIC® Microcontroller

    • 100 MHz dual core DSP high-speed ADCs/PGAs provide the performance and flexibility needed to optimize the transmitter efficiency
    • 250 ps PWM resolution and 12-bit 3.5 Msps ADCs enable effective FOD implementation
    • Multiple PWM channels help control the transmitter inverter stage, front-end buck-boost converter even a fan for cooling
    • Integrated UART /SPI /I2C /CAN-FD communication allow for integration of the NFC transceiver, Crypto Authentication Device, CAN Transceiver and other modules
    • Integration of buck-boost control and NFC software eliminates the need for external controllers for lower system cost
    • Small form factor, low pin-count uQFN, SSOP, QFN and TQFP packages for space constrained designs

Summary

The Three Coil Wireless Power Transmitter is based on the dsPIC33CH128MP506 device and implements a fixed frequency power control topology. The front-end buck-boost control is managed by the dsPIC33CH device. The transmitter includes CAN for ease of integration into the automotive environment. The transmitter also enables the implementation of NFC.

Microchip’s dual-core dsPIC33CH devices integrates the wireless power software stack along with CAN-FD software, Front-end Buck- Boost control, NFC software stack, and Crypto Authentication software. The software is partitioned between the two cores such that the wireless power control is implemented independently on one core and all the remaining functions are implemented in the other core. This partitioning facilitates independent code development on separate modules and enables parallel execution of the Qi protocol and other functions such as NFC