> You would be missing the 5V for the DVI-connector and for powering the
> USB-Host port, but assuming you don't care about any of these (and that the
> TPS62111 is OK with having 3V3 on its output with no input - I think it
> be, but haven't checked the datasheet in detail) I think you should be OK.
I wouldn't do that.....you are feeding power back to a pair of power MOSFETs
inside the TPS62111.....
I don't think that it will like that very much...... ;-(
It's at least worth giving it a try - I'm pretty sure you won't fry anything
After looking at the datasheet, it might be best if you remove the 6.8uH
inductor (square object marked "6R8" near the power jack - that will
interrupt the connection to said MOSFETs and essentially remove the
regulator from the power supply circuit.
"The stupidest question is the one not asked" - source unknown
> I wouldn't do that.....you are feeding power back to a pair of power
> MOSFETs inside the TPS62111.....I don't think that it will like that
> very much...... ;-(
Why should the MOSFETs within TPS62111 care as long you are working within
their normal operating range? Normally you can quite safely connect a power
supply to the output of a (switched-off) DC/DC-converter. At least I have
never seen any problems doing this (only done it for debugging and testing
though). Can you elaborate a bit on what you think might go wrong?
Best regards and thanks in advance
SSC Solutions ApS - Denmark - http://www.ssc-solutions.dk
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