Intel S5000XAL BB5000XALR User Manual

 

Revision 1.9 

The maximum allowed ripple/noise output of the power supply is defined in the following table. This is 
measured over a bandwidth of 0Hz to 20MHz at the power supply output connectors.  A 10 

μF tantalum 

capacitor in parallel with a 0.1 

μF ceramic capacitor are placed at the point of measurement. 

50mVp-p  50mVp-p 120mVp-p 120mVp-p  50mVp-p 

 

The power supply shall contain a control circuit which provides a monotonic soft start for its outputs 
without overstress of the AC line or any power supply components at any specified AC line or load 
conditions.  There is no requirement for rise time on the 5 V standby, but the turn on/off shall be 
monotonic. 

These are the timing requirements for the power supply operation.  The output voltages must rise from 
10% to within regulation limits (T

vout_rise

) within 5 to 70 ms, except for 5VSB; it is allowed to rise from 1.0 to 

25 ms.  All outputs must rise monotonically.  Each output voltage shall reach regulation within 50 ms 
(T

vout_on

) of each other during turn on of the power supply.  Each output voltage shall fall out of regulation 

within 400 msec (T

vout_off

) of each other during turn off.  The following diagrams show 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.