2.9. Power Supply

The module may be powered either with a direct regulated 3.3V supply capable of providing 0.5A or by a linearly regulated input with a range of 4.5V - 15V. Practical measurements taken from a gold specification module running uCLinux with active networking, serial and basic user CPLD code loaded, gives a baseline current draw of 0.39A at 3.3V (1.29W).

Measurements using the linearly regulated input give the expected results of a 0.39A current usage at any point of the acceptable input voltage range, the excess power being dissipated as heat into the modules ground plane.

All figures are subject to a 1% measurement accuracy and are for guidance purposes only.

Figure 2.9. Graph of EB675001DIP power usage

Graph of EB675001DIP power usage