Technical Product Specification

Power Sub-System Intel
®
Server System SC5650BCDP TPS
Intel order number: E80367-002 Revision 1.5
24
Table 22. Ripple and Noise
+3.3V +5V +12V(1,2,3,4) -12V +5VSB
50mVp-p 50mVp-p 120mVp-p 120mVp-p 50mVp-p
3.1.5.13 Timing Requirements
The timing requirements for power supply operation are as follows. The output voltages must
rise from 10% to within regulation limits (T
vout_rise
) within 5 to 70ms, except for 5VSB which is
allowed to rise from 1.0 to 25ms. The +3.3V, +5V and +12V output voltages start to rise at
approximately the same time. All outputs must rise monotonically. The 5V output needs to be
greater than the +3.3V output during any point of the voltage rise. The +5V output must never
be greater than the +3.3V output by more than 2.25V. Each output voltage reaches regulation
within 50ms (T
vout_on
) of each other during turn on of the power supply. Each output voltage falls
out of regulation within 400msec (T
vout_off
) of each other during turn off. The following table
shows 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.
Table 23. Output Voltage Timing
Item Description Minimum Maximum Units
T
vout_rise
Output voltage rise time from each main output. 5.0* 70* msec
T
vout_on
All main outputs must be within regulation of each
other within this time.
50 msec
T
vout_off
All main outputs must leave regulation within this
time.
400 msec
* The 5VSB output voltage rise time shall be from 1.0 ms to 25 ms