SilverStone SST-ST55GF [6/16] St55gf manual 05 pdf

3.4 Capacitive Loading

The power supply shall be stable and meet all requirements, except dynamic loading

requirements, with the following capacitive loading ranges.

Table 9 - Capacitive Loading Conditions

3.5 Timing Requirements

These are the timing requirements for the power assembly operation. The output voltages

must rise from 10% to within regulation limits (Tvout_rise) within 5 to 200mS. The +5V,

+3.3V and +12V output voltages should start to rise at about 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 shall reach regulation within 50 mS (Tvout_on) of

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

regulation within 400 mS (Tvout_off) of each other during turn off. Figure 1 and figure 2

show the turn On and turn Off timing requirement. In Figure 2, the timing is shown with

both AC and PSON# controlling the On/Off of the power supply.

Table 10 - Output Voltage Timing

Output

MIN MAX Units

+5V

+12V

+5VSB

+3.3V

10 uF

12,000

11,000

350

Item rin UnitsMIN MAX

Tvout_rise 5 70 mS

Tvout_on 50 mS

Tvout_off

Output voltage rise time from each main output.(+5Vsb < 70mS)

All main output must be within regulation of

each other within this time.

All main output must leave regulation within this time

400