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CC2652R: ZED consuming too much current in standby mode

Akhilesh Premkumar
Intellectual 995 points
Part Number: CC2652R
Other Parts Discussed in Thread: CC2530, ENERGYTRACE, SIMPLELINK-CC13X2-26X2-SDK, Z-STACK

Hi,

I tried performing energy trace on ZED_Sw example project and it is taking about 1mA with spikes of 6mA every 2 seconds. This is the out of the box example.

However, I checked the documents swra625b and swra478d  and disabled the CUI. The current consumption still averages 500uA, (min: 200uA: max 6mA).

As per documentation, I was expecting a standby power of 1uA (already have cc2530 working at 1.5uA). Not sure if I am doing something wrong.
Please could you suggest how I can check.

The above measurements were done with EnergyTrace standalone mode.
Performing EnergyTrace++, shows that 100% time is spent at Deep Sleep Mode, so I am not sure why there is so much current consumption

Any advice would be useful

Thanks
Akhilesh

  • 0
    Guru 735475 points

    Do you use CC2652 LaunchPad? If so, do you remove all jumpers on LanuchPad when you do power consumption measurement?

  • 0
    TI__Guru**** 207107 points

    Hi Akhilesh,

    Your Application Report links appear to be broken so I have provided them here: swra625 and swra478.  Please not that SWRA625 uses an older SDK that is not fully compatible with the newest SIMPLELINK-CC13X2-26X2-SDK (v4.30), where CUI_DISABLE must be defined among other changes.   You can refer to the Power Configuration section of the Z-Stack User's Guide for more details.  I agree with YK that the LaunchPad jumper settings are important to disable the unnecessary parts of XDS110 hardware.  The best results will be obtained with bench equipment, a power analyzer or precise multimeter.  

    Regards,
    Ryan

  • 0 in reply to Ryan Brown1
    Intellectual 995 points

    Thanks Ryan and Yikai,

    I had edited the sample app to completely remove the sample ui references using CUI DISABLE. However I had not removed the BOARD_DISPLAY_UART setting which seemed to be causing the issue.
    Checking in EnergyTrace standalone, connecting only VCC and GND,(keeping LP rx jumper as suggested), it seems to work fine.

    I am get mean current of 1.9 uA.( min - 0uA, max 20 uA).
    The max seems to be due to recharge pulses.

    Thanks,

    Akhilesh