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LAUNCHCC3220MODASF: Current consumption in Hibernate Mode

Mubin Quadri
Prodigy 200 points

Part Number: LAUNCHCC3220MODASF

Hi TI team,

I am using CC3220MODASF launch pad. I try to measure current consumption in hibernate mode.

For this I have remove VBAT jumper from Launch pad and connect an ammeter on this jumper pin. and power measurement code from simplelink_cc32xx_sdk_4_30_00_06.

it show some option on Serial Terminal. out of which one is for hibernate mode selection.

Once I have selected hibernate mode then current consumption on ammeter  shows around 5.716mA.

But as per the datasheet in Hibernate mode current consumption should be 4uA.

Can anybody suggest how can I reduce current in hibernate  mode?

Thanks & Regards,

Mubin Q.

  • 0
    TI__Mastermind 22935 points

    Hi Mubin,

    It is odd you get high current on a launchpad. You are correct to use VBAT to measure. How are you setting the options through the terminal of the power measurement program? Is it still printing UART or debug session active while in hibernate? This will consume more current if you set it up that way? 

    Jesu

  • 0 in reply to Jesu
    Prodigy 200 points

    Hi Jesu,

    Thanks for your reply.

    I have programmed .bin file of Power measurement program by using Uniflash.

    Connect virtual comport of Launch port to one of the serial terminal exe on 115200 baud rate.

    It shows some option on terminal for current measurement in different different condition.

    Once I select option 1 for HiB mode then, on terminal it shows a message of current measurement in HiB mode only once.

    After that there is no other message on terminal. At that time ammeter shows reading of 5.71mA.

    and also before selection of HiB mode, ammeter shows around 28mA.

    Let me know, if I am following any wrong procedure.

    Thanks & Regards,

    Mubin 

  • 0 in reply to Jesu
    Prodigy 200 points

    Hi Jesu,

    I have check board jumper setting. In this J26 is connected at 2-3 position, in which SOP pull-ups are connected to VBAT. 

    I have change position of jumper J26 to 1-2 position means VBRD supply pull-up.

    Now I am getting 4.2uA in Hibernate mode.

    Thanks & Regards,

    Mubin