Building a programmable DC-DC Power Supply with I2C Interface (I2C-PPS). Part 1 - Idea

I was lurking through DigiKey catalog and found a TI buck-boost controller with I²C interface - BQ25758S. The controller allows to create a programmable power supply with quite impressive output specs - voltage 3.3-26V and current up to 20A. Decided to give it a try and create a compact board for my RPI Zero. I don't think I'll go above 3A input (which means only 500mA@26V give or take some efficiency) and it's a bit of a shame that the controller doesn't go below 3.3V (much better would be at least 1.8V). For starter created an umbrella repository - github.com/condevtion/i2c-pps. Any "well, actually" are very welcome!