Saturn User Manual V1
Page 13
3.2.18 Power Supply
The board requires only +5VDC input voltage as per the PCIe/104 Specification. It supports ACPI for pushbutton
on/off control. It supports Standby mode with an op5VSB input. In standby mode, the board may be powered
on via Wake on Lan feature on at least one Ethernet port.
The 5V supply on the PCIe/104 connectors is routed directly to the input power connector, so that the board may
obtain its input power from either the input power connector or from the bus connector. Maximum allowable reflected
ripple, measured at the voltage input connector is 50mV p-p.
All required supply voltages for the board, are derived from the 5V input. These power supplies are sized to support
the highest power E3940 family processor with the highest capacity on-board memory plus have enough reserve
capacity to support the below add-on features:
5V
3.3V
Feature
2.0A
0.5A
PCIe add-on modules
1.3A
PCIe Minicard add-on modules
1.5A
M.2 Sata SSD
1.4A
0.7A
LCD power
0.9A
LCD backlight
0.05A
DAQ connector
0.05A
Utility connector
1.0A
USB 2.0 ports x2
1.8A
USB 3.0 port x2
The PCIe/104 connector obtains 5V power directly from the input connector. The +12V pin on the input power
connector is routed to the +12V source for the LCD backlight.
