Advantech SOM-ETX Design Guide
Chapter 6 Power Delivery Guidelines
This chapter provides the power consumption of SOM modules and the ATX/AT
power supply design recommendation for customer’s reference.
6.1 SOM Power Consumption
The power consumption of each SOM module as below. Consider the power
consumption for different SOM module power requirement will be necessary.
Table 6.1 SOM series board Power Consumption
SOM Model
CPU type
Typical
Load (A)
Max
Load(A)
Condition
GX1 166MHz
0.91
1.39
GX1 233MHz
0.97
1.42
4450
GX1 300MHz
1.07
1.44
HCT in WinNT 4.0
4451
SiS 200MHz
1.66
1.76
HCT in WinNT 4.0
Celeron 400MHz
1.24
2.2
PIII 500MHz
1.28
2.25
4470
PIII 700MHz
1.06
2.33
HCT in Win2000
C3 300MHz
1.14
1.29
C3 400MHz
1.02
1.26
C3 667MHz
1.35
1.96
C3 733MHz
1.45
2.21
C3 800MHz
1.58
2.84
4472
C3 LP 1GHz
1.8
3.25
HCT in Win2000
Celeron 400MHz
1.07
1.39
Celeron 650MHz
1.17
1.76
4475
PIII 933MHz
1.8
2.97
HCT in Win2000
Notes:
1. Operate entirely from 5-volt input power.
2. To accommodate the fastest future modules, it is recommended that the 5V
supply be capable of delivering 6 amperes average current to the SOM-ETX
module (with momentary peak current to 9 amperes).
3. It is also recommended that the thermal management solution be capable
of removing 30 watts from the SOM-ETX module’s heat spreader plate
while maintaining conservative operating temperatures.
Chapter 6 Power Delivery Guidelines
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