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Current consumption in stop mode using B-L072Z-LRWAN1

Question asked by Remco Groenendaal on May 3, 2017
Latest reply on May 22, 2017 by Amel N

Does anyone have any experience with the current consumption when using B-L072Z-LRWAN1 (STM32L072 and LoRa board) with i-cube-lrwan 110?

 

I can't get the current consumption below below 1.1mA no matter what i try. In lowpower (stop) mode all pins are set as analog, clocks are disabled, debug is off.

 

- I checked the device going into STOP mode

- Configured all non-connected pins to GPIO_MODE_ANALOG, GPIO_NOPULL

- Configured connected pins (UART, etc.) to GPIO_MODE_OUTPUT_PP, GPIO_NOPULL, and set to zero

 

I also stopped the debug clock in the ARM:

  __HAL_RCC_DBGMCU_CLK_ENABLE( );

  HAL_DBGMCU_DisableDBGSleepMode( );

  HAL_DBGMCU_DisableDBGStopMode( );

  HAL_DBGMCU_DisableDBGStandbyMode( );

 

Also TCXO is Off.

 

Still the current consumption is above 1 mA.

 

Anyone out there that managed to get the current down?

 

Thanks!

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