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Anyone here using USB-C?

Posted: 21 Sep 2016, 16:52
by Johnmcl7
As I understand it (and it may well be wrong) is that the USB-C 'rapid charging' and Qualcomm's quick charging are done in a different way and that Qualcomm's method breaches the USB-C spec. The USB-C method has different power delivery profiles for different power levels but for phones it seems to increase charging speed by increasing the current but keeping the voltage at 5V (other PD specs for laptops and similar have higher voltages) while Qualcomm use the data signalling to negotiate higher voltages (which it's not allowed to use the data signalling for as part of USB-C spec) and keep similar currents I assume so there's not similarly strict tolerances for the cable as there are with USB-C.

Whatever way it's two chargers...plus a different one for the Latitude 13 (same spec as the 11) and another different charger again for the Latitude 12.

John

Anyone here using USB-C?

Posted: 22 Sep 2016, 09:24
by jurassicjim
Wish companies didn't care about money so much and we could all just agree on one standard for this stuff.

j

Anyone here using USB-C?

Posted: 22 Sep 2016, 12:10
by Johnmcl7
Going forward I think USB-C power delivery will be the standard and QC will disappear it's just Qualcomm initially filled a gap for the technology when it wasn't a standard.

John

Anyone here using USB-C?

Posted: 25 Sep 2016, 23:20
by robbo
Just read that the Sony xperia X compact phone has USB-c and quickcharge 3.0.

Anyone here using USB-C?

Posted: 26 Sep 2016, 00:24
by Johnmcl7
There's a few current phones that have a USB-C port and support QC3.0 but they're apparently breaching the USB-C spec by doing that.

John