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Urgent Issue : How to maeasure Efficiency vs Power with BQ50002EVM-607 by using TI's BQTESLA or BQSTUDIO

Other Parts Discussed in Thread: BQSTUDIO, BQ50002

Hello.

This is Jonathan from Avnet Korea.

Inkel in Korea, who is one of our major customers, wants to measure Efficiency vs Power with BQ50002EVM-607 by using TI's BQTESLA or BQSTUDIO.

As can be seen below, the test result is reported in the data-sheet of bq50002 Wireless Power TX EVM.

Our customer want to view the test result of Efficiency vs Power as a graph from the screen of TI's test tools such as BQTESLA or BQSTUDIO.

Pleas let me know how to make a Efficiency vs Power graph by using BQTESLA or BQSTUDIO as below.

Thanks & Best regards.

Jonathan.

  • Hello Jonathan

    The input power to TX is available, input voltage  and input current.  But the output power at the RX is not available to the TX. 

    "Efficiency vs Power" using the I2C interface only is not possible.

    The receiver will report received power to TX for FOD purpose but this is not accurate enough for efficiency measurement. Several additional offsets are added to the received power measurement.