Other Parts Discussed in Thread: TPS2052B
Tool/software:
which pins/connector do I connect an external DC power supply to power up this circuit board
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Tool/software:
which pins/connector do I connect an external DC power supply to power up this circuit board
Thanks to Keith for his answer. Please also refer to the MSP-EXP432E401Y LaunchPad User's Guide for selecting power source.
2.1.6.4 Other Headers and Jumpers
JP1 is provided to select the 5-V power input source for the Ethernet LaunchPad development kit. The left
position is for BoosterPack plug-in module power; this position also disconnects both USB voltages from
the board’s primary 5-V input. In the left position, the TPS2052B does not limit current so additional care
should be exercised. The middle position draws power from the USB connector on the bottom of the board
near the Ethernet jack. The right position is the default, in which power is drawn from the XDS-110 USB
connection through J101. If JP1 is in the left or middle position, which selects the BoosterPack headers or
the USB OTG connector, respectively, externally provide 3.3 V to the board, and remove the 3V3 jumper
on J101.
I really appreciate everyone's quick feedback on this topic. Question, with the info shown below also work in powering up this circuit board, connecting 5Vdc to J13-1:
Do I still need to make jumper changes to JP1? and J101? Thanks again for everyone's time and help.
You can certain apply the power there, but you should disconnect the jumpers on J101 to prevent back-powering the regulator.
And 3.3. There is no 3.3 V regulator below J101, so you need to supply both 5 V and 3.3 V. (Check the schematic to make sure I am not lying to you.)