Hi guys

I've been working for some time using the 78XX series as regulators,
but I was never very satisfied, specially because of the heat
generation and poor quality of the regulated voltage.

I am now testing the LM2575/76 series, which seems to performance
better. It is switched and uses an internal frequency of 50KHz, we can
see in the output voltage some spikes (the ouput voltage varies in
 +-10%) in this frequency. I reduced the spikes using an
inductor/capacitor filter, but I could never eliminate it when I
have load.

So, my question is, considering that I will power a PIC and some other
circuits (mostly discrete) should I be worried with those spikes? I am
worried if the pic could get lost, or something like it. I also
control another board, which is a power system for a dc motor, and it
has a different power supply.

Do you have any other suggestions of regulators?

Best regards,
Rodrigo
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