Intel SC5299WS Manual De Usuario

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

#

 signal or by 

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 

Over-current Limit (lout limit) 

+3.3V 

110% minimum (= 26.4A) ; 150% maximum (= 36.0A) 

+5V 

110% min (= 26.4A); 150% max (= 36.0A) 

+12V1 

50A min; 60A max 

+12V2 

18A min; compliant with 240VA 

-12V 

0.625A min; 4.0A max 

5VSB 6.0A 

max 

 

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. 

Output Voltage 

MIN (V) 

MAX (V) 

+3.3V 3.9 

4.5 

+5V 5.7 

6.5 

+12V1,2 13.3 

14.5 

-12V -13.3  -15.6 

+5VSB 5.7 

6.5