![]() ![]() This is certainly something that could be made, but I suspect it will cost almost as much as buying a proper USB-C power brick that can be used with generic USB or MagSafe 3 cables. It will need a buck-converter to convert the 14.5v input to 5v for the initial output and will need a boost-converter to convert it to 20v after PD negotiation. The listing suggests using 60w/87w USB C charger from Apple, but Ive used it with my Aukey 56.5w charger (the one with one C and one A port), and the Mac happily charges. It’s going to need a chip that can implement the charger-side of the USB PD protocol. ![]() Which means it will want 20v, and the charger will initially provide 5v, switching to 20v after PD negotiation.Īny hypothetical adapter to go from MagSafe 1/2 to MagSafe 3 won’t be a simple passive adapter. ![]() The power brick will initially provide 5v and will switch to 20v after PD negotiation with the computer.Īlthough we haven’t seen specs yet, I would assume that MagSafe 3 is going to behave similarly to USB charging (the strongest hint is that the cable plugs into a USB-C charger). ![]() In contrast, Macs with USB-C charging require 20v (the highest voltage supported by the USB PD spec). The difference between MagSafe 1 and 2 was (as far as I know) only a change in the connector shape, which is why cheap passive adapters were possible. They provide 14.5v at however much current is needed to meet the brick’s power rating (up to 85W, depending on the model). MagSafe 1 and 2 are (more or less) traditional power bricks. I’m not sure if an adapter from MagSafe 1/2 will even be possible. ![]()
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