Design and Environmental Specifications

Intel® Server Boards S5000PSL and S5000XSL TPS

8.3.6Capacitive Loading

The power supply shall be stable and meet all requirements with the following capacitive loading ranges.

Table 42. Capacitive Loading Conditions

Output

Minimum

Maximum

Units

+3.3 V

250

6800

μF

 

 

 

 

+5 V

400

4700

μF

 

 

 

 

+12 V 1, 2, 3, 4

500 each

11,000

μF

-12 V

1

350

μF

 

 

 

 

+5 VSB

20

350

μF

 

 

 

 

1.Maximum continuous total output power should not exceed 670 W.

2.Maximum continuous load on the combined 12 V output shall not exceed 48 A.

3.Peak load on the combined 12 V output shall not exceed 52 A.

4.Peak total DC output power should not exceed 730 W.

8.3.7Ripple / Noise

The maximum allowed ripple/noise output of the power supply is defined in the following table. This is measured over a bandwidth of 0Hz to 20MHz at the power supply output connectors. A 10 μF tantalum capacitor in parallel with a 0.1 μF ceramic capacitor are placed at the point of measurement.

Table 43. Ripple and Noise

+3.3 V

+5 V

+12 V 1, 2, 3, 4

-12 V

+5 VSB

50mVp-p

50mVp-p

120mVp-p

120mVp-p

50mVp-p

 

 

 

 

 

1.Maximum continuous total output power should not exceed 670 W.

2.Maximum continuous load on the combined 12 V output shall not exceed 48 A.

3.Peak load on the combined 12 V output shall not exceed 52 A.

4.Peak total DC output power should not exceed 730 W.

8.3.8Timing Requirements

The following are the timing requirements for the power supply operation. The output voltages

must rise from 10% to within regulation limits (Tvout_rise) within 5 to 70 ms. 5 VSB is allowed to rise from 1.0 to 25 ms. All outputs must rise monotonically. Each output voltage shall reach

regulation within 50 ms (Tvout_on) of each other during turn on of the power supply. Each output voltage shall fall out of regulation within 400 msec (Tvout_off) of each other during turn off.

The following tables and diagrams show the timing requirements for the power supply being turned on and off via the AC input with PSON held low, and the PSON signal with the AC input applied.

84

Revision 1.2

 

Intel order number: D41763-003