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3.2 OVER CURRENT PROTECTION
3.3 OVER VOLTAGE PROTECTION
3.4 SHORT CIRCUIT PROTECTION
All output to ground.
3.5 UNDER VOLTAGE PROTECTION
3.6 OVER TEMPERATURE
The power supply includes an over-temperature protection sensor, which can
trip and shutdown the power supply at 110°C. Such an overheated condition is
typically the result of internal current overloading or a cooling fan failure.
3.7 OVER LOAD PROTECTION
Overload currents to output rail will cause the output trip before they reach or
exceed 110% ~ 140% for protection, the overload currents should be ramped
at a minimum rate of 10A/s starting from full load.
4.0 TIME SEQUENCE
T1 Power-On Time (500msec. max.)
T2 Rise-time (20msec. max.)
T3 Power Good Delay Time (100msec. < t3 <500msec)
T4 Power Fail Delay Time (1msec. min.)
T5 Hold-Up time (20msec. min)
1.4 INRUSH CURRENT
115V/60A(max), 230V/80A(max.) at 25°C cold start
1.5 POWER EFFICIENCY
Minimum efficiency at full load per Intel testing standard, 115V/230Vac 60/50Hz
2.0 OUTPUT:
NOTE:
1. The continuous max DC output power shall not exceed 350W. +5V,
+12V1, +12V2, and +3.3V output power shall not exceed 334W.
2. Ripple & noise test condition: AC 115V/230V 60/50Hz at full load
2.1 HOLD-UP TIME: 20ms (minimum)
Test Condition: 1. Full load. AC input 115V/230V, 57Hz/47Hz
2.2 LOAD TRANSIENT RESPONSE (STEP LOAD)
Step load changes of up to 20% of full load, while other loads remains constant
within the rating. The load waveform shall be a square wave with the slope of
the rise and fall at 1A/µsec and the frequency shall be from 10Hz to 1kHz. The
DC output voltage will stay within regulation during the step load changes.
2.3 OVERSHOOT
Overshoot at turn-on shall be less than 10% of the nominal output voltage.
3.0 PROTECTION:
If the power supply is latched into shutdown stage (when OCP, OVP, OPP or
short protection is working), the power supply shall return to normal operation
only after the fault has been removed and should reset PS-ON for a minimum of
1 second. Then it will turn on again.
3.1 INPUT UNDER VOLTAGE
The power supply shall contain protection circuitry such that application of an
input voltage below the minimum specified in Section 1.1 shall not cause any
damage to the power supply.
VOLTAGE +5V +12V1
+12V2 +3.3V -12V +5Vsb
MAX. LOAD 30A 16A 18A 28A 0.5A 2.0A
MIN. LOAD 0.3A 0.3A 0.3A 0.3A 0A 0A
REGULATION ±5% ±5% ±5% ±3% ±5% ±5%
RIPPLE& NOISE (mV) 50 120 120 50 120 50
SENSE LEVEL OVER CURRENT
12V
1 17.6A min 20.8A max
12V
2 19.5A min 23.4A max
+5V 33.0A min 45.0A max
+3.3V 30.8A min 42.0A max
SENSE LEVEL OVER VOLTAGE
12V
1 & 12V
2 13.3V min 14.3V max
+5V 5.7V min 6.2V max
+3.3V 3.7A min 4.1A max
SENSE LEVEL UNDER VOLTAGE
12V
1 & 12V2
9.5V min 10.5V max
+5V 4.1V min 4.47V max
+3.3V 2.55 Vmin 2.83V max
Version Efficency
US 86% without PFC
EC 82% with PFC