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  • Case ID: 318201
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Reducing nRF5340 Power Consumption during nRF7002 TWT Intervals

HolmanB

I am using the nRF7002DK development board, which features an nRF5340 as the Host MCU for the nRF7002 chip. I am testing the "Wi-Fi TWT Sample" sample project, which allows me to establish a Target Wake Time (TWT) session between the nRF7002 Wi-Fi module and a Wi-Fi 6 Access Point.

In this particular case, I have configured a TWT interval of 5 seconds. During the time interval between two TWT pings, it is observed that the nRF7002 is in Sleep Mode with a consumption of 18uA, as indicated in its datasheet and the image shown below:

nRF7002 Consumption

However, for my development project, it is a requirement that, between two TWT pings, the nRF5340 Host MCU maintains an average current lower than that presented in the following image (currently at 158uA).

nRF5340 Consumption

Could you please guide me on any configuration settings for the nRF5340, either in its QSPI interface or its Sleep modes, to reduce the average current consumed by this MCU between TWT intervals?

  • 0 in reply to ovrebekk

    Hi Torbjørn,

    I forgot to mention that I applied the following configuration in the prj.conf to disable the logging through the VCOM, according to the recommendations here:

    CONFIG_SERIAL=n

    It reduces the current consumption on the nRF5340 MCU. 

    Thank you! 

  • 0 in reply to HolmanB

    Hello Torbjørn,

    Could you give some update for this case please? I would appreciate any help you can provide.

    Thank you!

    Holman. 

  • 0 in reply to HolmanB

    Hello Holman, and sorry about the delay. Torbjørn is currently OOO, and I'll be taking over this case.

    Is there any development to this case, or are you still trying to get the consumption down? If I am understanding this case correctly, you are currently getting 158uA and trying to get it down to 18uA between the TWT intervals? 

    Regards,

    Elfving

  • 0 in reply to Elfving

    Hello Elfving,

    Thank you for your response. Unfortunately, there hasn't been any progress in this case yet. The primary issue revolves around the power consumption of the Host MCU nRF5340 between Target Wake Time (TWT) intervals.

    The nRF7002 Companion IC has a power consumption of 18uA, which aligns with the reference manual for this chip, and there are no issues with it.

    However, in my project, I require the Host MCU (nRF5340) to have reduced power consumption as well. Currently, the nRF5340 has a power consumption of 158uA between TWT intervals, but I need this figure to be lower. According to the reference manual, I understand that the nRF5340 in sleep mode could achieve a consumption in the tens of uA range. Is there any way to reduce the power consumption of the nRF5340 between TWT intervals?

    Thank you and Best Regards.

    Holman.

  • 0 in reply to HolmanB
    HolmanB said:
    According to the reference manual

    The manual of the nRF5340 that is? 

    There are several tips and tricks on how to generally reduce the power consumption of our SoCs. For instance see here. There is an additional challenge to the nRF5340 though, as you would need to put the relevant configurations on the netcore config file as well. 

    Regards,

    Elfving

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