Intel ATX Power Supply Design Guide
Version 0.9
3.3.7 +5VDC/+3.3VDC Power Sequencing
The +5VDC output level must be equal to or greater than the +3.3VDC output at all times during
3.3.8 Voltage Hold-up Time
The power supply shall maintain output regulation per Section 3.2.1 despite a loss of input power at the
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