Power Delivery Board - USB-C - using without uC

Components & Accessories Power
1

Hi,

I’m trying to use the Power Delivery Board with STUSB4500 chip. I connected it to arduino and programmed required PDOs (finished with calling write()). When connected to arduino it works fine and negotiates highest priority PDO with the battery. When I try to remove arduino board and use the Power Delivery Board standalone it doesn’t work any more. I’m getting 0V on the VSNK. I checked VIN and there is 5V available. Any idea what I’m missing?

Best Regards,

milosz

2

Hmmm, that is interesting. Could you provide a photo of the battery you are using and the setup?

Have you tried working with a power delivery power supply source? Do you get the same issues?

I assume this is after you set MVM values and try running the power delivery board as standalone per the hook-up guide? https://learn.sparkfun.com/tutorials/po … y-examples

3

I tried both battery and power supply. Results are the same. Both battery and power supply work nicely with imx8mm-evk board so I assume they’re good. I’m enclosing the pictures of both battery and power supply. I went through the guide you linked. As I wrote before it all works nicely as long as the power delivery board is connected to arduino with I2C. When I unplug, it doesn’t work any more. The MVM values seem to be saved to the STUSB4500 chip. When I plug it back to arduino I can read the values I set. I would expect at least 5V on the VSNK as this is the value in PD0 and it’s supported by both psu and battery.

psu.jpg
psu.jpg1000×1008 308 KB

battery_label.png
battery_label.png1000×699 955 KB

battery_front.png
battery_front.png1000×667 665 KB

4

Hmmmm. I think the power deliver board could be non functional. I apologize for the inconvenience there. I feel as if it should work based off of the data you have provided.

Fill out a return ticket and we can go from there: https://www.sparkfun.com/returns

5

This is unexpected. I was pretty sure I did something wrong. Anyway, I soldered some wires to the board already. I also didn’t purchase directly from you but from The PiHut in UK (https://thepihut.com/). Does the return form still apply in this case?

wires.png
wires.png1000×784 1.09 MB

Best Regards,

Milosz

6

Hmmm, I would go through PiHut for a return in this case. Just let them know you were working the SparkFun’s support and they should be able to help you assuming you fit their returns criteria.

7

Thanks John, much appreciated!