Table 46. Over-Current Protection; Table 47. Over-Voltage Protection Limits - Intel SC5299BRP Technical Product Specification

Power Sub-system
2.2.5.1 Over-current Protection (OCP)
The power supply has a current limit to prevent the +3.3V, +5V, and +12V outputs from
exceeding the values shown in the following table. If the current limits are exceeded, the power
supply will shut down and latch off. The latch will be cleared by toggling the PSON
an AC power interruption. The power supply will not be damaged from repeated power cycling
in this condition. -12V and 5VSB are protected under over-current or shorted conditions so that
no damage can occur to the power supply. The auto-recovery feature is a requirement on the
5VSB rail.
Voltage
+3.3V
+5V
+12V1
+12V2
-12V
5VSB
2.2.5.2 Over-voltage Protection (OVP)
The power supply over-voltage protection is locally sensed. The power supply will shut down
and latch off after an over-voltage condition occurs. This latch can be cleared by toggling the
#
PSON signal or by an AC power interruption. The following table contains the over-voltage
limits. The values are measured at the output of the power supply's connectors. The voltage
never exceeds the maximum levels when measured at the power pins of the power supply
connector during any single point of fail. The voltage will not trip any lower than the minimum
levels when measured at the power pins of the power supply connector.
Exception: The +5VSB rail should be able to recover after its over voltage condition occurs.
42

Table 46. Over-current Protection

110% minimum (= 26.4A) ; 150% maximum (= 36.0A)
110% min (= 26.4A); 150% max (= 36.0A)
50A min; 60A max
18A min; compliant with 240VA
0.625A min; 4.0A max
6.0A max

Table 47. Over-voltage Protection Limits

Output Voltage
+3.3V
+5V
+12V1,2
-12V
+5VSB
Intel order number D37594-005
®
Intel Entry Server Chassis SC5299-E TPS
Over-current Limit (lout limit)
MIN (V) MAX (V)
3.9
5.7
13.3
-13.3 -15.6
5.7
#
signal or by
4.5
6.5
14.5
6.5
Revision 3.1