Sujet : Re: Interesting reading about spread-spectrum, also for on-board designs
De : jl (at) *nospam* 650pot.com (john larkin)
Groupes : sci.electronics.designDate : 24. Jun 2024, 16:53:56
Autres entêtes
Message-ID : <s22j7jd9aa0svbmthj8lr76u52l05vipju@4ax.com>
References : 1 2 3
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On Mon, 24 Jun 2024 10:32:50 -0400, Joe Gwinn <
joegwinn@comcast.net>
wrote:
On Fri, 14 Jun 2024 07:55:14 -0700, john larkin <jl@650pot.com> wrote:
>
On Fri, 14 Jun 2024 07:43:53 GMT, Jan Panteltje <alien@comet.invalid>
wrote:
>
Interesting reading about spread-spectrum, also for on-board designs:
https://www.electronicdesign.com/technologies/power/article/55041243/monolithic-power-systems-choosing-the-proper-parameters-in-frequency-spread-spectrum-fss-design
>
That's cool, except for the usual dreadful fake pcb image.
>
We have a bunch of switchers that use our own FPGAs as the
controllers, and I need to start up a project to make them
spread-spectrum.
>
We don't want the ss modulation to show up in the DC outputs as ripple
or anything audible.
>
Standard issue in radar systems.
>
Take the FFT of the ss modulation and develop a pseudo-random sequence
generator which shows no structure in the spectrum.
>
Joe Gwinn
And has minimal low-frequency content.
Interesting reading about spread-spectrum, also for on-board designs
Re: Interesting reading about spread-spectrum, also for on-board designs