| General > General Technical Chat |
| Hackers Can Now Trick USB Chargers To Destroy Your Devices |
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| sleemanj:
IMHO USB-C and all the quick charge stuff was made stupid complicated. The developers threw software, negotiations, protocols, special chips, rewritable firmware... at a problem that amounts to connecting a wire to a voltage source. K.I.S.S |
| Ed.Kloonk:
--- Quote from: sleemanj on July 22, 2020, 12:47:57 am ---IMHO USB-C and all the quick charge stuff was made stupid complicated. The developers threw software, negotiations, protocols, special chips, rewritable firmware... at a problem that amounts to connecting a wire to a voltage source. K.I.S.S --- End quote --- I remember first reading about them wanting to deviate from the 5v, 500mA standard. I thought, oh f***, here we go. |
| SilverSolder:
--- Quote from: sleemanj on July 22, 2020, 12:47:57 am ---IMHO USB-C and all the quick charge stuff was made stupid complicated. The developers threw software, negotiations, protocols, special chips, rewritable firmware... at a problem that amounts to connecting a wire to a voltage source. K.I.S.S --- End quote --- Exactly... and any experienced engineer could have told them that the end result could only ever be less reliable than connecting a wire to a voltage source! |
| Halcyon:
Most decent phones will handle extreme over-voltages up the USB port anyway. |
| Halcyon:
--- Quote from: blueskull on July 22, 2020, 06:21:07 am --- --- Quote from: Halcyon on July 22, 2020, 02:43:20 am ---Most decent phones will handle extreme over-voltages up the USB port anyway. --- End quote --- Those phones handle an instant over voltage by absorbing it. There is a maximum energy limit and a maximum average power limit. This PD/QC hack dumps continuous, current unlimited 20V to the phone, and no ESD diodes can take that. --- End quote --- I'd hardly call the voltages pumped into the Samsung Galaxy Note series as "instant". It was fairly continuous and the phone didn't even lock up or reboot. And we're talking about 215 volts, not 20. |
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