Intel SPSH4 - Server Platform - 0 MB RAM, Технические характеристики продукции

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SPSH4 Server SystemTechnical Product Specification
Revision 1.11
Intel reference number 10736
29
4.2.4.4 Ripple and Noise
The maximum allowed ripple/noise output of the power supply is defined in Table 21. This is
measured over a bandwidth of 0Hz to 20MHz at the power supply output connector. A 10
µ
F
tantalum capacitor in parallel with a 0.1
µ
F ceramic capacitor are placed at the point of
measurement. The test setup is shown in Figure 13.
V
OUT
RETURN
V
LOAD
SCOPE
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
P6055 PROBES OR EQUIVALENT.
10uF
(low ESR)
POWER SUPPLY
AC
E a r t h G N D
Figure 13: Differential Noise Test Setup
Table 21: Ripple and Noise
Voltage Ripple / Noise pk-pk Ripple/Noise pk-pk
+3.3V 1.5% 50 mV
+5V 1% 50 mV
+12V 1% 120 mV
-12V 1% 120 mV
+5V Standby 1% 50 mV