Digitally controller power supply, continued


I'm posting the schematic of the i2c controlled power supply here, in case somebody is looking into a similar project.

It works, output is stable, i2c control works fine

BUT

That circuit is way too sensitive to noise.
In particular, when the spi clock is refreshing the screen, it induces nastly glitches on the output
(like ~ 1v glitches)

You dont even need to connect a screen, just put a wire on SPI CLK as an antenna.

The layout needs to be re-done to avoid long wires jumping from board to board.

The principle is sound though




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