B-WL5M-SUBG1 Power consumption measurement

[STeng]

Hi All,

I am working on B-WL5M-SUBG1 hardware.

I compiled the example "C:\...........\STM32Cube\Repository\STM32Cube_FW_WL_V1.3.0\Projects\NUCLEO-WL55JC\Examples\PWR\PWR_STANDBY" to  measure the current consummed in standby mode and I am measuring the current using STLINK_V3PWR.

I removed JP2 and connect "OUT" from STLINK_V3PWR to the pin that supply STM32WL5MOC and the GND of STLINK_V3PWR to GND of STM32WL5MOC.

I got current of about 2.3mA in standby mode instead of  less than 1uA as specified in the datasheet and I discovered that the 5V_PWR LED(LD4 Green) was ON.

I am just wondering how power got to the 5V_PWR LED or if I am missing something, has anyone done this in the past?

[STTwo-32]

Hello @STeng 

I suggest you to take a look at this post. It should be helpful. 

Best Regards.

STTwo-32

[Mona-Roza]

Hello, 

We are working with this board too and we realised smth. in power tree: 

When we broke SB14, the LED turned off and consumption reduced to 800uA-875uA band (with given configurations above). But you published this post a long time ago. Have you had a chance to further address the issue? If so, we'd appreciate it if you could share it.

Thank you,
Mona-Roza