Tofer:
As for AOZ - yes I've done it. But I used an xls file from the supplier. It calculates all the components' values. I've printed a board according to all tips from the datasheet. The board works ok, but it seems when servos are connected it goes crazy. On one of the forums there was s thought that I'm getting overvoltage due to the regenerative energy when I slow or stop my motors. This buck can't sink current, and even if it could it may pump up the input cap until the IC fails.
Got a 'scope? Probably the only way to see whats really happening. I presume the datasheet recommended
layout was used?