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IWR1642: IWR1642 Current consumption

QHaing Jo
Prodigy 10 points
Part Number: IWR1642


Dears,

Our team have currently designed a new radar sensor using the IWR1642. We made a pilot board by referring to the circuit of IWR1642BOOST. One question arose during engineering.

In the data sheet, the total current consumption of VIN_13RF1 and VIN_13RF2 is max. 2000mA. However, from our review, it consumed less than 50mA (We are using only TX1 and RX1).

The difference between datasheet and actual consumption current value is too large. I want to know if the current consumption is a normal value.

  • +1
    TI__Guru 58035 points

    Hello,

    The 2000mA peak current is the worst case current during the active chirp duration. I assume the 50mA you are referring to is an average current across the whole frame?

    In your chirp you might be using 1Rx , 1Tx , but during the calibration or monitoring, the firmware internally would make use of all 4Rx. So the power management should be designed to support the peak current scenario.

    Regards,
    vivek