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:
- Introducing Richtek’s New Generation Automotive USB Type-C PD Charger IC
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.
Another video on PPS from a charging device perspective:
I'll say the newer up and coming standard AVS (Adjusted Voltage Supply) for support with Extended Power Range looks promising, if not a little concerning in regards to cable quality hazards.
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