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IWR1443: Is there any way to reduce the power consumption?

Leon J
Prodigy 80 points
Part Number: IWR1443
Other Parts Discussed in Thread: TIDEP-0091

   Our project need very low power consumption, current the default power consumption is too high, our target is to reduce the power consumption below 0.01w, I found there's no sleep mode for this chip, is there any other way to reduce it?

  • 0
    TI__Mastermind 37500 points
    Hello,
    The TIDEP-0091 discusses a method to turn the Radar On/Off by controlling the PMIC LP87524J PMIC_EN. The lower power supply is discussed in swra577. 10mw, is currently lower than the TIDEP-0091 is achieving. The IWR1443 part will be upgraded later this year, to < 30mj level sensing application for TIDEP-0091.

    The mmwave sensor devices do not currently have a sleep mode.

    Regards,
    Joe Quintal
  • 0 in reply to Radio-Joe
    Prodigy 80 points
    Thanks for your reply, Could you tell me what upgrade will be done this year? is the flash clock? if so how much clock will be?
    as per the ARM's document, R4F has the standby mode, why it was cancel in this chip?
    Is there any further upgrade after the 30mj update?
  • 0 in reply to Leon J
    TI__Mastermind 37500 points
    Hello,
    The power characterization of the IWR1443 ES3 device is ongoing. There are other improvements to the TIDEP-0091 which are planned in the next quarter. The current TIDEP-0091 has a initialization, QSPI read, full caliration and measurement - 2 chirps. There are two current fixes to reduce the power, replacing C22 on the EVM with a .022uF cap, and the IWR1443 ES3 40Mhz QSPI load, the combination of these two reduces the 140ms boot time to 27ms. If the SWRA577 PMIC J, LDO bypass , including the internal 1v3-1v0 RFLDO bypass is performed the boot time is reduces to 22 ms.

    We are trying to reduce the power below 30mj, but that is after the power characterization is complete in May.

    Regards,
    Joe Quintal
  • 0 in reply to Radio-Joe
    Prodigy 80 points
    Hi Joe,
    Thanks for your quick reply, could you tell me if the mmwave sensor will support the sleep mode in the future? Is there any trouble when applying the sleep mode to it?
    For the BSS file, I only found the binary file which is "xwr12xx_xwr14xx_radarss.bin" but no source code, where can I get the source code, is it possible I can modify the source code?
    Thanks for your support.
  • 0 in reply to Leon J
    TI__Mastermind 37500 points

    Hello,

    The current generation of radar devices does not support sleep mode.   The sleep mode is being discussed for

    future devices.

    The BSS is supplied with the BSS firmware as a precompiled binary.  the mmwave SDK documentation, and the Radar Studio documenation Interface Control Document provide for the API calls.  The mailbox betwen the MSS/BSS or DSS/BSS additionally is used for the control path.

    Regards,

    Joe Quintal

  • 0 in reply to Radio-Joe
    Prodigy 80 points
    ok, thanks!