D R A F T — F O R I N
T E R N A L U S E O N L Y
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User Guide
CP6108X/CP6-GPU8860
3 Power Considerations
3.1
CP6108X Voltage Ranges
The CP6108X has been designed for optimal power input and distribution. Still it is necessary to ob-
serve certain criteria essential for application stability and reliability.
The system power supply must comply with the CompactPCI® specification.
The following table specifies the ranges for the input power voltage within which the board is functional.
Note:
Failure to comply with the instructions above may result in damage to the board or improp-
er operation.
3.1.1 Start-Up Requirement
Power supplies must comply with the following guidelines, in order to be used with the CP6108X:
»
Beginning at 10% of the nominal output voltage, the voltage must rise within
> 0.1 ms to < 20 ms to the specified regulation range of the voltage.
Typically: > 5 ms to < 15 ms.
»
There must be a smooth and continuous ramp of each DC output voltage from 10% to 90% of
the regulation band.
»
The slope of the turn-on waveform shall be a positive, almost linear voltage increase and
have a value from 0 V to nominal Vout.
3.1.2 Power-Up Sequence
The +5 VDC output level must always be equal to or higher than the +3.3 VDC output during power-up
and normal operation.
Both voltages must reach their minimum in-regulation level not later than 20 ms after the output pow-
er ramp start.
Table 15: DC Operational Input Voltage Range
INPUT SUPPLY VOLTAGE
ABSOLUTE RANGE
+3.3 V
3.2 V min. to 3.47 V max.
+5 V
4.85 V min. to 5.25 V max.
+12 V
11.4 V min. to 12.6 V max.
-12 V
-11.4 V min. to -12.6 V max.
