#buckconverter — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #buckconverter, aggregated by home.social.
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Well, this is annoying.
I have some little power #modules (bought on #AliExpress, natch) that were advertised as automatic boost/buck converters. Input from <4V to >30V, output from 1.25V to 35V.
They're based on the XL6009 switching converter, which supports auto-buck-boost as one mode.
But they appear to use it in boost-only mode. The output voltage can not go below the input as far as I can tell. From the datasheet, it looks like that's because the auto-buck-boost config requires a few more components, plus a transformer instead of a simple inductor, which is probably the main reason (BOM).
The listing just seems to be ... wrong.
Annoying.
#seller #SellerDescription #YumCha #Chinesium #BuckConverter #BoostConverter #AutoBuckBoost #BuckBoost #electronics #hobby
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Coping with Disappearing Capacitance in a Buck Converter https://hackaday.com/2025/08/10/coping-with-disappearing-capacitance-in-a-buck-converter/ #ceramiccapacitor #analogdiscovery #buckconverter #dielectric #capacitor #hardware #ceramic #Parts
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Coping with Disappearing Capacitance in a Buck Converter - Designing a circuit is a lot easier on paper, where components have well-defined ... - https://hackaday.com/2025/08/10/coping-with-disappearing-capacitance-in-a-buck-converter/ #ceramiccapacitor #analogdiscovery #buckconverter #dielectric #capacitor #hardware #ceramic #parts