Intel SC5299WS User Manual

 

2.2  550-Watt Power Supply 

The 550-W power supply specification defines a non-redundant power supply that supports 
dual-processor Intel

®

 Xeon

®

 entry server systems. The 550-W power supply has 6 outputs: 

3.3V, 5V, 12V1, 12V2, -12V and 5VSB. The form factor is SSI EPS12V at 140mm or 180mm 
depth. 
 
Mechanical form factor:  

86-mm x 150-mm x (140-mm or 180-mm) (H x W x D) 

    Wire 

harness 

output 

 
Cooling: 

 

 

Single 80-mm or 120-mm fan 
Variable fan speed based on output load and ambient temperature 

 
Output Loading: 

 

550W: 3.3V/24A, 5V/24A, 12Vtotal/40A, 12V1/40A, 12V2/16A,  

    -12V/0.5A, 

5VSB/3A 

 

 

 

 

550W @ 45 degrees C (added 12V power) 

 
Efficiency recommendation:  ~ 70% efficiency @ 100% load, 90VAC 
 
Acoustics: 

 

 

6.5 BA @ 100% load, 45 degrees C 

 

 

 

 

5.2 BA @ 60% load, 40 degrees C 

 

 

 

 

4.7 BA @ 40% load, 35 degrees C 

 
AC Input: 

 

 

90VAC to 264AV 

 

 

 

 

Power Factor Corrected to meet EN61000-3-2 

 
Holdup time:    

 

12 msec @ 100% load 

    20 

msec 

@ 

75% 

load 

 
SMBus (PSMI): 

 

No PSMI features 

 
Protection: 

 

 

over current, over temperature, over voltage 

 

 

 

 

240VA protection on 3.3V, 5V, 12V2, -12V, and 5VSB (no 240VA  
protection on 12V1) 

 
LED: 

  

  No 

LEDs 

 
Environmental: 

 

45 degrees C max inlet temperature 

    5,000 

feet 

altitude 

 
EMI: 

 

 

 

EN55022/CISPR 22 – Class A (10dB margin) @ 75% load 

 
Reliability: 

 

 

100,000 hours MTBF and 3 year life @ 75% load, 40 degrees C, 

100VAC 
    Standard 

Intel 

component 

de-ratings 

 
Ecology: 

 

 

RoHS compliant per directive 2002/95/EC (lead free solder)