Technical data

7-8
Power Supplies
7
+5 Volt Risetime
The +5 volt output transitions from +2 volts to +4.75 Volts in less than 20 mS.
The +5 volt output has a monotonic rise time.
The maximum allowable overshoot is 2%.
The above conditions is over the complete load range from minimum to maximum load,
with a capacitive load from zero (0) to 2000 ufd.
The above conditions are over the complete input range of the power supply.
Output Disable
The output voltage is disabled when an AC power fail condition exists and the DC main
output has dropped 0.5v +/- 0.25 volts out of regulation.
The outputs are re-enabled when the AC input recovers.
Power Supply Enable
The power supply enable is a system controlled signal that allows the supply to output
DC power. The signal sense is LOW = no output, HIGH = DC output. This signal line
from the power supply may float up to 15 volts when not connected. This line does not
output more than 10 ma when externally connected to ground. The power supply must
remain off if this signal is less than 0.6 volts.
Holdover Storage
Output voltage stays within regulation limits for at least 20 mS from the last peak of the
line voltage cycle after input power is removed. Measured with 90 Vac input and 700
watts of output power.
OverVoltage Protection
+5 volt output limits voltage at 6.3 Vdc +/- 3% under any single fault condition.
+12 volt outputs does not exceed +15.0 Vdc under any single fault condition. Power
supply latches off and cycling the AC power restarts.
Overtemperature Protection
The power supply shuts down when the internal temperature exceeds maximum safe
rating. Power supply latches off and cycling enable restarts.
Table 7-3. 700 Watt AC Power Supply Specifications (Continued)