SilverStone SST-OP1000-P [4/12] Timing requirements

Ripple and Noise shall be measured using the following methods:

3.3 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 70mS. 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.

Item Min Max UnitsDescription

Tvout_rise

Tvout_on

Tvout_off

5 70 mS

All main output must be within regulation

of each other within this time.

All main output must leave regulation

within this time

Table 10 – Output Voltage Timing