Intel® Server Board S2600CO Family TPS Power Supply Specification Guidelines
Revision 1.0
Intel order number G42278-002
AC HOT
POWER SUPPLY
AC NEUTRAL
V
OUT
RETURN
V
AC GROUND
LOAD
SCOPE
LOAD MUST BE
ISOLATED FROM
THE GROUND OF
THE POWER
SUPPLY
10uF
.1uF
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 26. Differential Noise test setup
Note: When performing this test, the probe clips and capacitors should be located close to
the load.
12.1.3.8 Timing Requirements
These are the timing requirements for the power supply operation. The output voltages rise from
10% to within regulation limits (T
vout_rise
) within 2 to 50ms, except for 5VSB - it is allowed to rise
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
vout_on
) of each other during turn on the power supply. Each output
voltage fall out of regulation within 400ms (T
vout_off
) of each other during turn off. The table below
shows the timing requirements for the power supply being turned on and off from 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.
Table 67. Output Voltage Timing
Output voltage rise time from each main output.
Output rise time for the 5Vstby output.
All main outputs must be within regulation of each
other within this time.
All main outputs must leave regulation within this
time.
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