The newest USB standard, 3.1 offers a wide range of power output options:
Do I need an IC to do the power negotiation (if so, is there one that's readily available from digikey/mouser)?
Or can I do the same thing as the old DIY Apple chargers where you use a resistor voltage divider to enable the full power output from the USB port?
EDIT: I'm not looking for a critique of the idea, but looking for ideas how to do it.
- 5V, 900mA (USB 3.0)
- 5V, 2A
- 12V, 5A
- 20V, 5A
- Existing USB 2.0 power options
Do I need an IC to do the power negotiation (if so, is there one that's readily available from digikey/mouser)?
Or can I do the same thing as the old DIY Apple chargers where you use a resistor voltage divider to enable the full power output from the USB port?
EDIT: I'm not looking for a critique of the idea, but looking for ideas how to do it.
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