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TRF7970A: How to avoid interference between RFID and Qi-Wireless charger in wearable product design

weiji jiang
Expert 2040 points
Part Number: TRF7970A
Other Parts Discussed in Thread: BQ51050B,

Hi TI Folks,

  Good day to you.

  There is a wearable product design with RFID and Qi wireless charger feature. Considering TI MPN TRF7970A and BQ51050B. Please advise how to avoid interference between RFID and Qi-Wireless charger in wearable product design, and share the design guide line. 

Best regards

Jiang WeiJi 

  • 0
    TI__Guru*** 135355 points
    Hello Weiji,

    We don't have any reference designs or design guidelines for such an application, and we are not planning to develop any such collateral.

    The only advice I can think to offer with my limited understanding of such a system is that for RFID to operate, the Qi field will likely need to be turned off during the duration of RFID operation. I don't have any other advice to avoid interference.