Goals

Test software is ready. Time to test the test software!

Features to test:

• STM32 PD controls the voltage from the Type-C power supply
• 2 channels of the STM32 DAC are controlled in the terminal

Why did I choose them? Regulation of Vout and average current - the biggest risk at the moment. PD is needed to test the power supply EVM with real Type-C inputs.

Scheme

Simple connection of two devboards from ST and a power adapter. 

Test

For power delivery, there is a ready solution from ST. On the PC side using Stm32CubeMonitor UCPD. Manipulating voltage through the GUI is straightforward. 

The only moment was inconvenient - UCPD utilises Nucleo's USB-VCP only when the built-in ST-LINK is reconfigured to VCP + debug. In the default state (Drive+VCP+Debug), they don't work together.

Results

• 2 DACs are controlled through the terminal, but are twisted and 
• Can request USB PD supply with profiles: 
  • 5V 1.5A
  • 9V 3A
  • 20V 3A

Ready to power up LM51772EVM!