RotoPD Pro - USB-C 240W Breakout I2C

Good news on the weekend for everyone. The AP33772S Arduino library V1.2.0 is now released. Beside small note changes, we have added a extended example call RotoPDPro_SerialCommand that allow user to quickly evaluate most of the core function of RotoPD Pro.

Check out Arduino AP33772S Library

There is now also a tutorial on how use to use the example on YouTube. Check it out below.

We didn’t develop the library from scratch — we modified it specifically for the RotoPD Pro application. This IC is very important because it handles OVP (Over‑Voltage Protection) and OCP (Over‑Current Protection) for downstream devices.

I couldn’t get a good photo of the code, so here’s a picture of the Rev 1.1 board instead.

Swapping out the 3.3V -> 5V level shifter IC just solve this GitHub issue. We also need to swap out 2 (two) other resistors as the calculation was not correct. Basic functionally is working now!

Next step: Firmware development!

Our first design was able to pull 48V like expected without anything blowing up!

However, the voltage level shifter doesn't solve the leaking current issue, mentioned in this GitHub issue. We are working to replace this part with footprint compatible parts.