Current measurement with STM32L562QE-DK

[c_dev05]

Hello,

I want to use the STM32L562QE-DK board to measure the current for my own developed PCBA. There is a connector CN20 that can be used for this purpose as written in the schematic for the board:

• Output connector to supply and measure external target:
• PIN 1: GND
• PIN 2: Voltage source, current is not measured, it is not a copy of ourput voltage
• PIN 3: Output with current measurement
• PIN 4: Output voltage copy with 150R protection serial resistor, current is not measured

But there is no voltage on Pin 3? And in the user manual for the board I also did not find anything.

Where can I find documentation how to configure the board for this purpose?

Thanks,

Wolfgang

[c_dev05 · Accepted solution]

I found the solution by analyzing the schematic.

External current measurement:

• connect USB cable to CN16
• open JP2; onboard MCU not supplied
• close JP7; supply CN20 external supply connector
• connect external device to CN20; pins 1 (GND) und 3 (3.3V or 1.8V depending on jumper)
• use STM32CubeMonitor-Power to measure current

Wolfgang