Set output of Power Delivery Board

Components & Accessories Power
1

I want to use the Sparkfun Power Delivery Board in order to force an ANKER PowerBank 737 to output power at 12V, with up to 3.0A being drawn from the device. The device is an endge computer which has not capability of negotiating a power delivery contract with the PowerBank.

I used the Example2-SetParameters.ino from the Sparkfun GitHub project

“sparkfun/SparkFun_STUSB4500_Arduino_Library Public”

in order to set the PDO3 values to 12V and 3.0A, like so

  usb.setVoltage(3, 12.0);
  usb.setCurrent(3, 3.0);
  usb.setLowerVoltageLimit(3, 10);
  usb.setUpperVoltageLimit(3, 10);

After resetting the Power Delivery Board the yellow LED next to PDO3 lights up. But I am not sure that I am getting that output. How can I force the Power Delivery Board to always output power via PDO3?

2

You might be able to set it one of 2 ways, either as the ‘set default’ or by increasing PDO3’s priority

3

Thanks for answering. Do you know which functions in the Arduino Power Delivery Board Arduino Library need to be set?

I want the board to boot up with PDO3 as default.