Introduction
16
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Acronym, Convention/
Terminology
Description
PFC
Power Factor Correction.
p-p
Peak-to-Peak Voltage Measurement.
PWR_OK
PWR_OK is a “power good” signal used by the system power
supply to indicate that the +5VDC, +3.3 VDC and +12VDC
outputs are above the under-voltage thresholds of the power
supply.
Ripple noise
The periodic or random signals over a frequency band of 0 Hz
to 20 MHz.
Rise Time
Rise time is defined as the time it takes any output voltage to
rise from 10% to 90% of its nominal voltage.
Surge
The condition where the AC line voltage rises above nominal
voltage.
VSB or Standby Voltage
An output voltage that is present whenever AC power is
applied to the AC inputs of the supply.
Table 1-2: Support Terminology
Category
Description
Optional
The status given to items within this design guide, which are not
required to meet design guide, however, some system applications
may optionally use these features. May be a required or
recommended item in a future design guide.
Recommended
The status given to items within this design guide, which are not
required to meet design guide, however, are required by many
system applications. May be a required item in a future design guide.
Required
The status given to items within this design guide, which are
required to meet design guide and a large majority of system
applications.
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Summary of Contents for ATX 3.0
Page 69: ...LFX12V Specific Guidelines 2 0 336521 69 Figure 12 2 Mechanical Details...
Page 70: ...LFX12V Specific Guidelines 2 0 70 336521 Figure 12 3 PSU Slot Feature Detail...
Page 71: ...LFX12V Specific Guidelines 2 0 336521 71 Figure 12 4 Recommended Chassis Tab Feature...
Page 77: ...SFX12V Specific Guidelines 4 0 336521 77 Figure 14 3 Top Mount Fan Profile Mechanical Outline...
Page 82: ...SFX12V Specific Guidelines 4 0 82 336521 Figure 14 10 PS3 Mechanical Outline...
Page 87: ...TFX12V Specific Guidelines 3 0 336521 87 Figure 15 6 Suggested Mounting Tab chassis feature...
