Datasheet

Page5
3.5.1 under-voltage protection
In the event of an under-voltage condition on +3.3 & +5Vdc &+12V the
power supply shall shutdown and require remote control or remove the AC
mains input to reset the system.
+5V : 4.2V (minimum)
+3.3V : 2.8V (minimum)
+12V : 10.3V (minimum)
3.5.2 OVER- CURRENT PROTECTION
There shall be protection from an output over-current event. The PSU may
shutdown form such an event and require power-on restart.
The overload currents should be ramped at a minimum rate of
10 A/s starting from full load.
Over-current test values:
Output Voltage 3.3V 5V 12V1 12V2
Protecting trigger condition < 60A < 45A < 24A < 24A
3.5.3 Short-Current Protection
An O/P short circuit is defined as any O/P impedance of less then 0.1 ohms.
The power supply shall shutdown and latch off for shorting +3.3V, +5V or
+12V rail to return or any other rail. and +5VSB shall not cause any damage
to the power supply. The power supply shall either shutdown and latch off or
fold back for shorting negative rail. +5VSB must be capable of being shorted
indefinitely, but when the short is removed, the power supply shall recover
automatically or by cycling PS_ON#. The power supply shall be capable
withstanding a continuous short-circuit to the O/P without damage or
overstress to the unit (for example to components, PCB traces, connectors)
under the I/P conditions specified.
3.5.3 Over power Protection
110% ~ 150% @ Full load
3.6 OUTPUT RISETIME
The cold-start enable main output voltage rise-time of all outputs shall be
measured with maximum load on all outputs. (with
COND.11)
Rise time: +3.3V
20mS (maximum)
(10-90%) +5V 20mS (maximum)
+12 V 1 20mS (maximum)
+12 V2 20mS (maximum)
-12 V 20mS (maximum)
The test condition: 230Vac/50Hz