Motorola CPCI-6115 Instrukcja Obsługi Strona 155

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Appendix A Specifications
CPX8216 and CPX8216T Installation and Use (6806800A52C)
135
Overshoot Overshoot does not exceed 2.0% of any output voltage under the following
conditions: power failure, enabled, disabled, and AC input cycled on/off.
Overshoot is the phenomena where the magnitude of voltage of an output
temporarily exceeds its final or stabilized value.
Load Change Transient
Response
Any DC voltage returns to 1% within 2mS in response to a 25% change in
the load. The +5V output does not vary more than 3% in response to a
25% change in load. The 12V output does not go out of regulation during
a 0.5A change in the +12V load.
Proper Operation During
Dynamic Loads
The power supply operates properly when subjected to a 10% delta
dynamic load with a 50% duty cycle at all frequencies from zero to 2 MHz,
or 2 times the switching frequency of the power supply, whichever is
greater.
Undershoot and Reverse
Voltage
With respect to its normal zero reference voltage, no output voltage shall
under any normal condition, become of a polarity opposite to its normal
operation polarity (excluding applying an external reverse voltage).
Output Risetime The +5V output will have a monotonic rise from 2V to 4.75V. The +5V
output will transition from +2V to +4.75V in less than 50ms when loaded to
37.5A or less.
The +5V output will always be above +3.3V output.
The +3.3V output will transition from +2V to 13.3V in less than 50ms.
The skew in risetime between +5V and +3.3V outputs will be less than
50mS.
The +12V output will transition from +2V to +10.8V in less than 50ms.
The above conditions will be over the complete input range and load
range, from minimum to maximum load with a capacitive load.
Holdover Storage Output voltage stays within regulation limits for at least 20ms from the last
peak of the line voltage cycle after input power is removed. The power
supply does not latch off during an AC line loss condition that is less than
the hold up time.
Over Voltage Protection A Single Fault condition is the failure of any one device within the power
supply. The condition includes both the shorting of any output and the
failure of any one device within the power supply.
Under any single fault condition:
The +5V outputs limit voltage at 6.4Vdc maximum.
The +3.3V output limits voltage at 4.2Vdc maximum
The ±12V outputs do not exceed ±15.0Vdc, respectively.
Control Signals ENABLE POWER# (Input to Power Supply):
Turns on and off the power supply outputs. When the Enable Power#
signal is low, the power supply will be ON. When the Enable Power# signal
is high or open, the power supply will be OFF.
POWER GOOD# (Output from Power Supply):
This signal is low when the power supply output voltages are good. The
signal is high when the power supply voltages are bad. The voltage is good
when it is within ±5% of the set voltage.
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