Current is pulled not pushed. The Pi won't draw more than it needs.*
However...
Is that a fixed 100W output or does it use USB PD? Or some other mechanism to control the output?
100W is 20A at 5V. The standard rating for a USB C cable and connector is 5A at 5V, to get 100W a USB PD supply will typically output 5A at 20V.
20V will damage the Pi.
If it does use USB PD, does it support a 5A at 5V mode? If it doesn't the spec says it should default to 3A at 5V which will cause the PI5 to reduce available current to downstream USB devices to a combined total of 600mA.
If it doesn't use USB PD, be very, very careful.
Safest option is to use the official PSU.
Measuring output from a PSU that does variable voltages in watts is a poor idea that must have been dreamed up by a marketing department somewhere. Probably with the justification that bigger numbers make our product look better than yours and a single number makes it easier for end users to compare outputs.
*: unless you've a short between input and ground of course.
However...
Is that a fixed 100W output or does it use USB PD? Or some other mechanism to control the output?
100W is 20A at 5V. The standard rating for a USB C cable and connector is 5A at 5V, to get 100W a USB PD supply will typically output 5A at 20V.
20V will damage the Pi.
If it does use USB PD, does it support a 5A at 5V mode? If it doesn't the spec says it should default to 3A at 5V which will cause the PI5 to reduce available current to downstream USB devices to a combined total of 600mA.
If it doesn't use USB PD, be very, very careful.
Safest option is to use the official PSU.
Measuring output from a PSU that does variable voltages in watts is a poor idea that must have been dreamed up by a marketing department somewhere. Probably with the justification that bigger numbers make our product look better than yours and a single number makes it easier for end users to compare outputs.
*: unless you've a short between input and ground of course.
Statistics: Posted by thagrol — Tue Oct 01, 2024 11:33 pm
