Power Requirements; Thermal Requirements; Table 2-3 Power Requirements - SMART Embedded Computing MVME7100ET Installation And Use Manual

Hardware Preparation and Installation
2.3.2

Power Requirements

The MVME7100ET uses only +5.0V from the VMEbus backplane. On-board power
supplies generate the required voltages for the various ICs. The MVME7100ET connects
the +12V and -12V supplies from the backplane to the PMC sites while the +3.3V power
supplied to the PMC sites comes from the +5.0V backplane power. A maximum of 10A of
+3.3V power is available to the PMC sites, however the 90W +5.0V limit must be observed
as well as any cooling limitations.
The table below provides an estimate of the typical and maximum power required.
Table 2-3
Board Variant
MVME7100ET-0161
MVME7100ET-0163
MVME7100ET-0171
MVME7100ET-0173
The following table shows the power available when the MVME7100ET is installed in either
a 3-row or 5-row chassis and when PMCs are present.
Chassis Type
3-Row
5-Row
1. Keep below power limit. Cooling limitations must be considered.
2.3.3

Thermal Requirements

The MVME7100ET module requires a minimum air flow of 10CFM uniformly distributed
across the board, with the airflow traveling from the heat sink to the PMC2 site, when
operating at a 55°C (131°F) ambient temperature.
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Power Requirements
Available Power
70W maximum
90W maximum
MVME7100ET Single Board Computer Installation and Use (6806800K87G)
Hardware Preparation and Installation
Power
Typical: 40W @ +5V
Maximum: 55W @ +5V
Typical: 40W @ +5V
Maximum: 55W @ +5V
Typical: 45W @ +5V
Maximum: 60W @ +5V
Typical: 45W @ +5V
Maximum: 60W @ +5V
Power With PMCs
Below 70W
Below 90W
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