LMR14206 PSU Ripple

LMR14206 with 12V output to a LM1117 3.3V regulator. This is the 3.3V – 350mV ripple – not good. I need to work on that a bit. This is from my Motor Controller with MCU ticking.

I probably need to add another coil on the 3.3V, but that add a lot of space, so I am starting to think that a 7812/317 regulator is a better shoice. Will see how much is needed to fix this.

Regardless a bit impressed over my DS1054 Rigol Oscilloscope. I have an expensive Techtronics at work and to be honest I would gladly replace it with my Rigol costing only 10% of the price for a Techtronics.

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