tgirlschierke@lemmy.blahaj.zone to 196@lemmy.blahaj.zoneEnglish · 1 month agoChargerulelemmy.blahaj.zoneexternal-linkmessage-square12fedilinkarrow-up1240arrow-down14
arrow-up1236arrow-down1external-linkChargerulelemmy.blahaj.zonetgirlschierke@lemmy.blahaj.zone to 196@lemmy.blahaj.zoneEnglish · 1 month agomessage-square12fedilink
minus-squareJumuta@sh.itjust.workslinkfedilinkEnglisharrow-up9arrow-down2·1 month 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-21 month 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/