tgirlschierke@lemmy.blahaj.zone to 196@lemmy.blahaj.zoneEnglish · 5 days agoChargerulelemmy.blahaj.zoneimagemessage-square12linkfedilinkarrow-up1235arrow-down14
arrow-up1231arrow-down1imageChargerulelemmy.blahaj.zonetgirlschierke@lemmy.blahaj.zone to 196@lemmy.blahaj.zoneEnglish · 5 days agomessage-square12linkfedilink
minus-squareJumuta@sh.itjust.workslinkfedilinkEnglisharrow-up9·5 days agoit’s not even just unsupported protocols, it’s also about voltage levels the charger and device supports
minus-squarecalisti@lemmy.blahaj.zonelinkfedilinkEnglisharrow-up1·edit-22 days agoCorrect! And not just the charger and the device, also the cable needs to have the right e-marker chip (> 5 A), speak the protocol and confirm that it can carry the requested current during negotiation. Just look at this teardown. High-current USB-PD cables are electronic devices of their own right: https://www.chargerlab.com/teardown-of-apple-240w-usb-c-charge-cable-a2794/
it’s not even just unsupported protocols, it’s also about voltage levels the charger and device supports
Correct! And not just the charger and the device, also the cable needs to have the right e-marker chip (> 5 A), speak the protocol and confirm that it can carry the requested current during negotiation.
Just look at this teardown. High-current USB-PD cables are electronic devices of their own right: https://www.chargerlab.com/teardown-of-apple-240w-usb-c-charge-cable-a2794/