General Specifications SE7500CW2 Server Board Technical Product Specification
102
Revision 1.40
9.5.2 Voltage Recovery Timing Specifications
The power supply must conform to the following specifications for voltage recovery timing under
load changes:
• Voltage shall remain within +/- 5% of the nominal set voltage on the +5 V, +12 V, 3.3 V, -5
V and -12 V output, during instantaneous changes in load shown in the following table.
• Voltage regulation limits shall be maintained over the entire AC input range and any
steady state temperature and operating conditions specified.
• Voltages shall be stable as determined by bode plot and transient response. The
combined error of peak overshoot, set point, regulation, and undershoot voltage shall be
less than or equal to +/-5% of the output voltage setting. The transient response
measurements shall be made with a load changing repetition rate of 50 Hz to 5 kHz. The
load slew rate shall not be greater than 0.2 A /µs.
Table 68. Transient Load Requirements
Output Step Load Size Starting Level Finishing Level Slew Rate
+3.3 V 4.8 A 30Min. Load Min. load + 4.8 A and step up to max. load 0.50 A/µs
+5 V 3.0 A 30Min. Load Min. load + 3.0 A and step up to max. load 0.50 A/µs
+12 V 10.4 A Min. Load Min. load + 10.4 A and step up to max. load 0.50 A/µs
+5 VSB 500 mA Min. Load Min. load + 500 mA and step up to max. load 0.50 A/µs
-12 V 325 mA Min. Load Min load +325 mA and step up to max. load 0.50 A/µs
9.6 Shock and Vibe testing results
Shock and vibe testing is a rigorous set of tests which test board strength and durability under
extreme conditions. The SE7500CW2 board has been tested in the SC5200 Base chassis with
the 450W power-supply and the results are as follows:
• Shock operation test passed
• Shock non-operating test failed. Intel is currently investigating this issue at this time.
• Vibration operating test passed.
• Vibration non-operating test passed.
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