Intel SC5650BCDP User Manual

 

3.1.5.6 

Voltage Regulation 

The power supply output voltages are within the following voltage limits when operating at 
steady state and dynamic loading conditions. These limits include the peak-peak ripple/noise. 
All outputs are measured with reference to the return remote sense signal (ReturnS). The 
+12V3, +12V4, –12V and 5VSB outputs are measured at the power supply connectors 
referenced to ReturnS. The +3.3V, +5V, +12V1, and +12V2 are measured at the remote sense 
signal located at the signal connector. 

Parameter 

Tolerance 

MIN 

NOM 

MAX 

Units 

+ 3.3V 

- 5% / +5% 

+3.14 

+3.30 

+3.46 

V

rms

 

+ 5V 

- 5% / +5% 

+4.75 

+5.00 

+5.25 

V

rms

 

+ 12V1 

- 5% / +5% 

+11.40 

+12.00 

+12.60 

V

rms

 

+ 12V2 

- 5% / +5% 

+11.40 

+12.00 

+12.60 

V

rms

 

+12V3 

- 5% / +5% 

+11.40 

+12.00 

+12.60 

V

rms

 

+12V4 

- 5% / +5% 

+11.40 

+12.00 

+12.60 

V

rms

 

- 12V 

- 5% / +9% 

-11.40 

-12.00 

-13.08 

V

rms

 

+ 5VSB 

- 5% / +5% 

+4.75 

+5.00 

+5.25 

V

rms

 

 

3.1.5.7 

Dynamic Loading 

The output voltages are within the limits specified for the step loading and capacitive loading 
requirements specified in the following table. The load transient repetition rate is tested between 
50Hz and 5 kHz at duty cycles ranging from 10%-90%. The load transient repetition rate is only 
a test specification. The 

Δ step load may occur anywhere within the MIN load and MAX load 

conditions. 

Output 

Δ Step Load Size 1, 2 

Load Slew Rate 

Test Capacitive Load 

+3.3V 7.0A 

0.25 A/

μsec 4700 

μF 

+5V 7.0A 

0.25 A/

μsec 1000 

μF 

+12V 25A 

0.25 A/

μsec 2700 

μF 

+5VSB 0.5A 

0.25 A/

μsec 20 

μF