Datasheet

Page6
3.7 OUTPUT OVERSHOOT/UNDERSHOOT
No output voltage shall overshoot / undershoot or generate spikes at
turn-on or turn-off, during momentary power loss, output short, or realistic
input voltage or output load changes, Overshoot/undershoot is defined as
any output that exceeds the voltage tolerance plus or minus an additional 5%.
All outputs shall be measured with minimum load (COND.3)
Overshoot Undershoot
+3.3V 3.63V 2.97V
+5V 5.5V 4.5V
+12V1 13.2V 10.8V
+12V2 13.2V 10.8V
-12V -13.8V -10.2V
+5VSB 5.5V 4.5V
3.8 EFFICIENCY requirement of main output
The PSU should be a minimum of 82% efficiency under 100% of full load
and 50% of full load, and 20% of full load in a “light” load or ideal condition.
That should be tested at nominal Input voltage is 230V/50Hz and load
conditions defined in below Table.
loading 5V 12V1 12V2 3.3V -12V +5Vsb Pout Efficiency
20% 1.79A 2.09A 2.09A 2.5A 0.05A 0.42A 70W 82%
50% 4.47A 5.22A 5.22A 6.26A 0.13A 1.04A 175W 85%
100% 8.94A 10.44A 10.44A 12.52A 0.25A 2.09A 350W 82%
3.9 EFFICIENCY requirement of standby output
Input power has to be under 0.5W when output current is set up at
50mA and input voltage is set up at 230Vac/50HZ (Remote off: PS_ON#
high state).