Devlog #03

Overview

The first PCB is done! It is the power module in a 100x80mm format.

Traces

Each module is designed to handle 15A. There will be 4 of them for 50A so in reality it will be only 12.5A on each module. Still, traces need to be quite wide. I decided to remove solder mask on the traces that were too wide to route properly and needed to be made thinner.

Current measurement

2 INA180 current amplifiers are used to measure current. Why 2? Because I want to measure 2 ranges: 15A and 1.5A. And that’s also the reason why there are 2 shunt resistors on the screenshot below.

Next Steps

Now I will focus on the control board. There is a lot going on there so it may take a while