CP302
Introduction
ID 21112, Rev. 05
Page 1 - 8
®
PEP Modular Computers GmbH
1.6 Power Consumption and Temperature Range
The CP302 board is based on the Intel
Mobile Pentium
IIl processor. Intel
has
developed mobile processors to meet the specific needs of mobile PC's. As such, they
operate at lower voltages than their desktop counterparts, are significantly smaller in
size, consume less power and dissipate less heat. The design is optimized for low
power consumption applications.
The goal of this description is to provide a method to calculate the power consumption
for the CP302 base board and for additional configurations. The processor dissipates
the majority of the thermal power.
The power consumption table lists the voltage and current specifications for the CP302
board and the CP302 accessories. The values are measured with a 8 slot passive
CompactPCI backplane and two power supplies, one for the CPU and the other one for
the harddisk. During the measurement the power consumption of the backplane can be
ignored. The operating systems was DOS 6.22 without power management and
Windows NT 4.0 with power management. The measured values varied, because the
power depended on the processor activity. All Mobile Pentium
IIl processors are
powered with 1.35V core voltage (low power version).
These values were measured at the DOS prompt and without the keyboard.
Table 1-2: Power Consumption Table with DOS Running (without keyboard)
Power
5V
3.3V
Total
400 MHz
32 or 64 MB Memory (128 Mbit chips)
without VGA
5.2W
5.3W
10.5W
400 MHz
64 or 128 MB Memory
with VGA
5,3W
6.5W
11.8W
500 MHz
64 or 128 MB Memory
with VGA
5.9W
6.5W
12.4W
700 MHz
64 or 128 MB Memory
with VGA
8.8 W
6.4 W
15.2 W
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