Hello
I am trying to implement low power mode with STM32WLE5 MCU (as a part of RAK3172-SIP).
However, the current consumption is unreasonably high.
I measure around 200uA with 3.6V and around 150uA with 3.3V.
Did many tests with different configurations, checked the RF switches. I use TXCO, but even if I run with internal clock - no changes. Debug mode is disabled.
How can I debug it further?
I even tried to go into Stop2 mode directly before HAL_Init() - still the same 200uA (at 3.6V) consumption. So even before all periphery is initialized I cannot get the lower consumption.
I did similar test with Wio-e5 module just to check that the HW is not an issue, and there I 've got around 300uA (at 3.6V). So I have no questions to HW.
Regarding the HW, there I have one 100k resistor to BOOT0 to GND and one 100k pullup to nRST. The rest is caps and inductors for supply lines, nothing else is connected to the module.
I was thinking this is because of SMPS - but I checked that it is not running in Stop2.
Please guide me how to debug this.
