Intel ATX12VO

Electrical
34 613768
4.2.8 Multiple 12V Rail Power Sequencing (Required)
If the power supply has multiple +12VDC rails all output rails must reach its minimum
in-regulation level (11.2V) within 20ms of when the first +12VDC rail reaches it
minimum in-regulation level (11.2V).
4.2.9 Voltage Hold-Up Time (Required)
The power supply shall maintain output regulations per Table 4-2 despite a loss of
input power at the low-end nominal range-115 VAC / 47 Hz or 230 VAC / 47 Hz – at
maximum continuous output load as applicable for a minimum of 17 ms (T5+T6).
4.3 Timing, Housekeeping, and Control (Required)
Figure 4-2: Power on Timing
Table 4-8: Power Supply Timing
Parameter Description
Value
Required Recommended
T0 AC power on time
4
<2s
T1 Power-on time
3
<150ms
1
<100 ms