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From: Uwe Bonnes <bon@hertz.ikp.physik.tu-darmstadt.de>
Newsgroups: sci.electronics.design
Subject: Re: UCC33420 dc/dc converter eval
Date: 10 Apr 2025 08:48:48 GMT
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john larkin <jl@glen--canyon.com> wrote:
> 
> 
> My TI rep was being difficult, so I just bought an eval board from
> Digikey for $100.
> 
> It makes a nice 4.993 volt output, but it's wicked noisy.
> 
> https://www.dropbox.com/scl/fo/8fybyu5l3w4tdgt1y0386/AFunYi9K15UgNpkQzEbYaVA?rlkey=j261b4ca5kc966vq2y03fw0md&dl=0
> 
> 53% efficient into that 0.25 watt load.
> 

I think this high frequency noise should be easy to filter by some CLC
Filter.
-- 
Uwe Bonnes                bon@elektron.ikp.physik.tu-darmstadt.de

Institut fuer Kernphysik  Schlossgartenstrasse 9  64289 Darmstadt
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