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2.7 Dynamic loading
The PSU is subjected to a load change as shown in the table below at a rate
of 1A/μsec (unless otherwise specified).
The frequency of change is set to give the best readability of the deviation
and setting time.
All other output loads and the AC line voltage are chosen in order to obtain
the worst case condition
Output
Caps [μF] (option)
3.3V
5V
12V
3. PROTECTION
3.1 Under voltage protection.
In an under voltage fault occurs, the supply will latch all DC outputs into a
shutdown state when +12V,+5V & +3.3V outputs under 60% of it's maximum
value.
3.2 Over voltage protection
output
+12 VDC
+5 VDC
+3.3 VDC
3.3 Short circuit
An output short circuit is defined as any output impedance of less than 0.1
ohms. The power supply shall shut down and latch off for shorting the +3.3
VDC,+5 VDC,or+12 VDC rails to return or any other rail. Shorts between main
output rails and +5VSB shall not cause any damage to the power supply. The
power supply shall either shut down and latch off or fold back for shorting the
negative rails.+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 of withstanding a continuous
short-circuit to the output without damage or overstress to the unit
3.4 Over-power protection
The power supply will be shutdown and latch off when output power
is 150%~200%.
Load
Current slew rate
3300
3300
6600
Minimum
13.4
5.74
3.76
Step Load Size ( Intel )
1A/μs
1A/μs
1A/μs
Nominal
Maximum
15.0
6.3
4.2
30% of Max Load
30% of Max Load
60% of Max Load
Unit
15.6
Volts
7.0
Volts
4.3
Volts
04
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