this post was submitted on 11 Jul 2025
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Electrical and Computer Engineering

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How does mobile phone fast charging work? - YouTube (m.youtube.com)
submitted 2 weeks ago* (last edited 2 weeks ago) by ruffsl@programming.dev to c/ece@lemmy.world
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An fine introduction to USB charging and Power Delivery protocols that also goes quite deep into industry approaches.

The presenter is from the automotive electronic parts market, and posted a great more recent (but more vendor specific) related video here as well:

For example, I really wish my modern Anker AC charger would at least support "Smart Power Sharing Communication" with its Dual Port configuration "via Sinc_Cap", rather than naively having total output equally for each device regardless of each device's power profile capability.

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[–] ruffsl@programming.dev 1 points 2 weeks ago

Another related video from a nice channel I posted here previously: