On 12/4/16 12:14 PM, John Ackermann N8UR wrote:
That's a very good point... the design I'm testing the regulator in has a fair bit of C filtering, but no series L.
I little series L and another C (so you have a pi low pass) can make a huge difference. If the load current is reasonably constant, then the drop across the series R of the L will be constant, so you can bump the dc/dc output to compensate. It's pretty easy to get 60dB of rejection from a C-L-C pi, and for 2MHz, the parts are physically small.
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