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Over Voltage Protection
+5V
output: +5.7V
min.; +6.5V
dc
dc
+12V
output: +13.3V
dc
dc
+3.3V
output: +3.7V
dc
dc
Short Circuit Protection
Output short circuit is defined to be a short circuit load of less then 0.1
ohm.
In the event of an output short circuit condition on +3.3V, +5V or +12V
output, the power supply will shutdown and latch off. The power supply
shall return to normal operation after the short circuit has been removed
and the power switch has been turned off for no more than 2 seconds.
In the event of an output short circuit condition – 12V output, the power
supply will not be latch off. The power supply shall return to normal
operation as soon as the short circuit has been removed and the power
switch has been turned of for no more than 2 seconds.
Overload Protection
Overload currents defined as a 10 amp/sec fault current ramp starting
from full load, applied to the +3.3V, +5V output, shall snot cause that
output to exceed 32 amps before the output voltage drops below 0.5 volts
and is latched off. The +12V output shall not exceed 20 amps under the
same ramp conditions starting at full load before it is latched off.
Power Good Signal
The power good signal is a TTL compatible signal for the purpose of
initiating an orderly star-up procedure under normal input operating
conditions. This signal is asserted (low) until +5Vdc has reached 4.75
volts during power up. Characteristics:
TTL signal asserted (low state): less the 0.5V while sinking 10mA.
TTL signal asserted (high state): greater than 4.75V while sourcing
500uA.
High state output impedance: less or equal to 1Kohm from output to
common.
Power Good @ 115/230V, Full Load
Power Fail @ 115/230V, Full Load
74
max.
dc
min.; +15.6V
max.
dc
min.; +4.5V
max.
dc
100~500mSec.
1mSec. Minimum
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