3 ms·
Marker chips are 'optional' for USB-C, but essential for Lightning You can also directly feed the needed voltage without the negotiation. So this is only parti
by gbraad 4y ago
Marker chips are 'optional' for USB-C, but essential for Lightning
You can also directly feed the needed voltage without the negotiation. So this is only partially true.
- kanetw 4y agoA compliant USB-C source will not provide more than 5V/3A without PD negotiation period, and is only guaranteed to provide default USB power. So if you can potentially draw more, you need to check whether it's allowed.
- Dylan16807 4y agoYou need a chip in the power supply for that, but you already have a chip in the power supply because switching supplies are massively cheaper. You don't need a marker chip in the cable unless you intend to go over 20V/3A.
- kanetw 4y agoI'm just talking about end devices here (source/sink).
- deleted 4y ago[deleted]