B-WL5M-SUBG1 Power consumption measurement

STeng · ‎2024-04-24

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 · ‎2024-05-30

Hello @STeng

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

Best Regards.

STTwo-32

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