Figure 53. Differential Noise Test Setup; Table 81. Ripples And Noise; Table 82. Output Voltage Timing - Intel S2600CP Family Technical Product Specification

Intel Server System P4000CP Power System Options Intel
®
50mVp-p
The test set-up shall be as shown below.
Note: When performing this test, the probe clips and capacitors should be located close to
the load.
13.2.5.11 Timing Requirements
These are the timing requirements for the power supply operation. The output voltages rise from
10% to within regulation limits (T
from 1 to 25ms. The +3.3V, +5V and +12V1, +12V2, +12V3 output voltages start to rise
approximately at the same time. All outputs rise monotonically. Each output voltage reach
regulation within 50ms (T
voltage fall out of regulation within 400ms (T
83 shows the timing requirements for the power supply being turned on and off by the AC input,
with PSON held low and the PSON signal, with the AC input applied. All timing requirements are
met for the cross loading condition in Table 77.
Item
Output voltage rise time from each main output.
T
vout_rise
Output rise time for the 5Vstby output.
All main outputs must be within regulation of each
T
vout_on
other within this time.
All main outputs must leave regulation within this
T
vout_off
time.
132

Table 81. Ripples and Noise

+3.3V +5V
50mVp-p
AC HOT
POWER SUPPLY
AC NEUTRAL
AC GROUND
GENERAL NOTES:
1. LOAD THE OUTPUT WITH ITS MINIMUM
LOAD CURRENT.
2. CONNECT THE PROBES AS SHOWN.
3. REPEAT THE MEASUREMENTS WITH THE
MAXIMUM LOAD ON THE OUTPUT.
SCOPE NOTE:
USE A TEKTRONIX 7834 OSCILLOSCOPE WITH 7A13 AND
DIFFERENTIAL PROBE P6055 OR EQUIVALENT.

Figure 53. Differential Noise test setup

) within 2 to 50ms, except for 5VSB - it is allowed to rise
vout_rise
) of each other during turn on the power supply. Each output
vout_on

Table 82. Output Voltage Timing

Description
Intel order number G26942-003
Server Board S2600CP and Server System P4000CP TPS
®
+12V 1, 2, 3 -12V
120mVp-p 200mVp-p
V
OUT
V
RETURN
10uF
.1uF
) of each other during turn off. Table 83. Table
vout_off
2
1
+5VSB
50mVp-p
LOAD MUST BE
ISOLATED FROM
LOAD
THE GROUND OF
THE POWER
SUPPLY
SCOPE
MIN MAX
50
25
50
400
UNITS
ms
ms
ms
ms
Revision 1.1