Bringing up power on the quad pi3 hat
The first thing I needed to get working on the new quad’s raspberry pi3 hat, was the input DC/DC power converter. One of the main functions of this board is to take the main DC bus voltage of around 20V, and provide the raspberry pi with 5V power.
In the previous iteration of this board, it was limited to an recommended maximum voltage of around 24V. As with all the components in my hardware revisions I aimed to support a higher input voltage. Here I switched parts to the Diodes AP64351 so that I could get to a recommended maximum voltage of 32V (the part’s absolute max is 40V).