Hello,
I have a PIC-based boost switch-mode power supply that is working great,
but unfortunately it emits quite some RF, every time it's switching.

I have thus decided to use a snubber, are there any good engineering
practices, or interesting tricks to follow?

I guess there's very little I can do on the PIC software side, strategy
wise, as the problem is inherent in the boost topology.. i.e. the voltage
has to rise a lot so that the inductor can add some energy to an already
nearly fully charged capacitor.

The bad thing is that if I make each switching slower, I will dissipate
energy in the switching transistor. If I use a snubber, I will probably
dissipate the same energy there. It's not even going to be much useful
to lower the switching frequency, as the trouble (interference) I'm getting=
,
is coming from every switch event. Also I cannot change the cable, to
isolate the wires of the sensor from the wires that carry the interference
(the wires that go into the inductor (a stator actually)).

Thanks for any hints,
Mario

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