Custom Wio-E5-LE PCB draws 88 µA in sleep — datasheet says 2.1 µA

[Saarankan]

Hi everyone,

         I’m facing an issue with power consumption on my custom PCB that uses the Wio-E5-LE module. According to the datasheet, the module should consume around 2.1 µA in sleep mode, but my board is drawing around 88 µA instead. I’ve double-checked everything and can’t find any other source of leakage.

What i have already checked,

• Disabled all unused peripherals
• Configured all GPIOs properly
• Verified there are no shorts or solder bridges on the PCB
• Measured current draw of other components — none show any noticeable leakage

 

 

[Andrew Neil]

Welcome to the forum.

Please see How to write your question to maximize your chances to find a solution for best results.

In particular, please show your schematic.

Some good, clear photos may also help.

 

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@Saarankan wrote:

According to the datasheet... 

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Which datasheet is that - the module's datasheet, or chip datasheet?

 

Have you contacted Seeed Studio? The module is their product:

https://aftersale.seeedstudio.com/home

https://discord.com/invite/QqMgVwHT3X

https://forum.seeedstudio.com/ 

[JBive.1]

Hi,

I am not familiar with the Wio-E5-LE module. However, the µA-figures you mentioned match the numbers in this post:

https://community.st.com/t5/stm32-mcus-wireless/b-wl5m-subg1-stm32wl5moc-current-consumption-too-high/m-p/856159 

Maybe this post can give you a hint?

BR
Jonas