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Realized 99% of all my chargers are USB-C. This can only mean one thing. New USB bout to drop!
(lemmy.dbzer0.com)
this post was submitted on 13 Jul 2025
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Not unless they want to go bigger. The USB-C pin pitch is too closely spaced for the lowest tier of printed circuit boards from all major board houses.
You might have some chargers get deprecated eventually because there are two major forms of smart charging. The first type is done in discrete larger steps like 5v, 9v, 15v, or 21v. But there is another type that is not well advertised publicly in hype marketing nonsense and is somewhat hit or miss if the PD controller actually has the mode. That mode is continuously adjustable.
The power drop losses from something like 5v to 3v3 requires a lot of overbuilding of components for heat dissipation. The required linear regular may only have a drop of 0.4-1.2 volts from input to stable output. Building for more of a drop is just waste heat. If the charge controller can monitor the input quality and request only the required voltage for the drop with a small safety margin, components can be made smaller and cheaper. The mode to support this in USB-C exists. I think it is called PPS if I recall correctly. A month or two back I watched someone build a little electronics bench power supply using this mode of USB-C PD.
Yeah, Programmable Power Supply mode can be programmed (in realtime) to deliver from 3.3 to 21 volts in 20mV steps. For current im not totally sure how it works, i think you can set a limit.
There is an issue of some kind where the current limit is not reliable and requires additional circuitry. I think GreatScott YT was who went into that one.