B.1 Available power for expansion boards
The MPS3 board supplies power to the expansion boards through the expansion connectors.
FMC-HPC power
The MPS3 board supplies power, through the FMC‑HPC connector, to a fitted FMC‑HPC board. The
following table shows the maximum current that the board can supply from each power rail.
Table B-1 FMC-HPC power
Power rail Voltage Max load Comment
12P0V 12V 1A -
3P3VAUX 3V3 standby 20mA For FMC EEPROM only
3P3V 3V3 2.5A -
FMCVADJ 1V2/1V5/1V8 4A Other voltages are not supported
Shield expansion and Pmod expansion power
The MPS3 board supplies power to expansion Shields or Pmod expansion boards, depending on what
expansion boards are fitted. The following table shows the maximum current that the board can supply
from each power rail.
Table B-2 Shield and Pmod power
Power rail Max load Comment
3V3 1A
Maximum current available for both Shields, or all four Pmod expansion boards.
Includes digital I/O reference IOREF.
5V 1A
Maximum current available for both Shields, or all four Pmod expansion boards.
Includes digital I/O reference IOREF.
12V 0.5A
Maximum current available for both Shields, or all four Pmod expansion boards.
Includes digital I/O reference IOREF.
Note
User‑links on the board select 3V3 or 5V digital I/O operation. See 2.16 Arduino Shield and Pmod
interfaces on page 2-43 for information on the digital I/O user‑links.
B Specifications
B.1 Available power for expansion boards
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Appx-B-89
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