Hello team, I am now using STEVAL-STWINKT1 board to realize low-power online monitoring. But when I put the board into stop mode, the current consumption is still about ~10mA. Is that normal? And any solutions to reduce the power consumption? Thanks, Xiao

[YXiao.3]

Hi, here are the steps I conducted:

1. Disable all unused sensors; stop all timers; stop ADC.
2. Enter stop mode: ( HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);
3. Use LPTIM1 to wake up.

And here are my questions:

1. I used integrated current monitors to monitor the current consumption of 4 major part of the board( MUC, Sensors, BLE and WI-IF expansion). The current consumption for each part are respectively ~4.2mA, ~0.6mA, ~0.45mA, ~0. And the current consumption of the board is ~10mA (power supply 3.7V). I'm now wondering why the current consumption is not matching? And it's much larger than I expected.
2. When I lower the power supply from 3.7V to 3V, the current consumption basically stays the same. Does that mean that the LDO consumes a big part of the power?

Thank you very much!