Electronic Products & Technology

Dual-pad, multi-coil wireless power transmitter supports EPP, MPP of Qi 2.0

EP&T Magazine   

Electronics Power Supply / Management Wireless DSC EPP microchip MPP multi-coil power transmitter wireless

MICROCHIP Dual-pad multi-coil wireless power transmitter reference design is controlled by one dsPIC33 Digital Signal Controller (DSC). The dual-pad design supports EPP and MPP of Qi 2.0. The flexible software architecture of this DSC enables optimized software to support a combination of MPP and EPP of Qi 2.0 with one controller. This automotive-grade reference design includes CryptoAuthentication to support security requirements of the standard. The design includes the dsPIC33 DSC, the Trust Anchor TA100/TA010 secure storage subsystem that we provision as a licensed Wireless Power Consortium (WPC) Manufacturer Certificate Authority (CA) and other components shown in the block diagram below. We provide you with design files and software source code under the appropriate terms and conditions for a seamless design and first-pass success.


  • Dual-pad transmitter supporting Qi 2.0 and Qi 1.3
  • MPLA, power-loss and Q-FOD tuning
  • Transmitter based on fixed-frequency topology control
  • Front-end buck-boost control managed by the MCU controlling wireless power
  • Easy integration into automotive environment with CAN FD hardware/software
  • Ability to integrate NFC for card detection/protection and out-of-band communication
  • LED bank for power level/power status indication

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