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>We don’t do that because it’s costly in silicon, and it’s costly in wasted energy, which just ends up heating the board up. We’ve done the more Raspberry Pi th
by asddubs 3y ago
>We don’t do that because it’s costly in silicon, and it’s costly in wasted energy, which just ends up heating the board up. We’ve done the more Raspberry Pi thing, which is make a supply that can drive a five-amp load at five volts, which isn’t a standard PD mode, but you can negotiate it.
Why is that the more raspberry pi thing? I think it's silly. Sure, the board would heat up more but 5v 5a is just weird. You might as well not even have usb-c then and just use a barrel jack. You can override it and hope it works out, like they promise it probably will, but that's janky. using 5v just moves the losses to the cable instead of the buck regulator.
- gizmo686 3y agoOne of the big constraints on the Pi is thermal. The more heat yout power system puts intobthe board, the less you can afford to have your processor. If you are going to add a heatsink and active cooling, this is probably not an issue. But if a significant portion of your users will not do that, then thermal improvements translate directly to performance improvements.
- deleted 3y ago[deleted]
- GloriousKoji 3y agoIt's the more rasperry pi "thing" because it's simpler, cheaper and more accessible. You don't want to use a barrel jack because it's too easy to plug in the an adapter with the wrong voltage or polarity and it's not as ubiquitous as USB power supplies.
- eternityforest 3y agoI don't like this much. Long crappy cheap cables won't work reliably. It's higher idle draw than some boards. It really seems like it's trying to be a desktop replacement rather than a Pi.