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Qi® Wireless Power Micro-Receiver Reference Design

Our Qi® Wireless Power Micro-Receiver reference design allows you to quickly add wireless charging functionality to your projects without having to deal with complex specific protocols or state machines. This receiver is implemented using a general purpose 8-bit microcontroller (MCU) and is a flexible, low-cost alternative to common wireless charging solutions based on ASICs. The receiver is compatible with the Qi 1.1 (5W) standard and can be used in conjunction with any Qi 1.1-compatible wireless charging transmitters. All Qi 1.2 or higher-compliant base stations are also backwards compatible with Qi 1.1.

Key Features of this Reference Design:

  • 8-bit PIC16F15313 MCU
  • MCP1755 Low Dropout (LDO) voltage regulator, which supplies the 5V voltage for the battery charger and the MCU
  • MCP73830 single-cell Li-Ion/Li-Polymer battery charge management controller
  • A shunt resistor and an MCP6001 amplifier used by the MCU to measure input current
  • Foreign Object Detection (FOD) using the power loss method
SAMA5D27 System-on-Module (SOM) Reference Design