Path: ...!local-2.nntp.ord.giganews.com!Xl.tags.giganews.com!local-1.nntp.ord.giganews.com!nntp.supernews.com!news.supernews.com.POSTED!not-for-mail NNTP-Posting-Date: Fri, 14 Jun 2024 14:55:13 +0000 From: john larkin Newsgroups: sci.electronics.design Subject: Re: Interesting reading about spread-spectrum, also for on-board designs Date: Fri, 14 Jun 2024 07:55:14 -0700 Message-ID: <45mo6jhcq8kisjmbrom8i1r17ljr6g4qu8@4ax.com> References: User-Agent: ForteAgent/8.00.32.1272 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Lines: 15 X-Trace: sv3-CMAng67Q/LXiSbIL1biyPYEXwsfttHWfnNqh3MQRlW7XX22BYwS64ltAy5Wz7s5VJqqEDIdXN2A4z1g!fPljeOJRj46AKg8CYDV1ZzFGz0iajQoOgPbZI040/5+pbDUlVv8IfePOgQZp+ytWbPScIJSRKR12!PBadVw== X-Complaints-To: www.supernews.com/docs/abuse.html X-DMCA-Complaints-To: www.supernews.com/docs/dmca.html X-Abuse-and-DMCA-Info: Please be sure to forward a copy of ALL headers X-Abuse-and-DMCA-Info: Otherwise we will be unable to process your complaint properly X-Postfilter: 1.3.40 Bytes: 1673 On Fri, 14 Jun 2024 07:43:53 GMT, Jan Panteltje 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.