Protection Features Evaluation
Protection Features |
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OCP | +12 V: 77.8 A (124.48%), 11.862 V +5 V: 28 A (140%), 4.767 V +3.3 V: 28.2 A (141%), 3.261 V 5VSB: 5.1 A (170%), 4.919 V |
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OPP | 966.27 W (128.84%) |
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OTP | Yes (145 °C @ +12 V heat sink) |
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SCP | +12 V: Yes +5 V: Yes +3.3 V: Yes 5VSB: Yes -12 V: Yes |
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PWR_OK | Accurate, but below 16 ms |
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NLO | Yes |
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SIP | Surge: MOV Inrush: NTC |
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Most protection features are correctly set. I only object to the high OCP triggering points on the minor rails, which should be below 140%. There is no point for such a strong 3.3 V rail with the voltage at 5 V dropping low.
DC Power Sequencing
According to Intel's most recent Power Supply Design Guide (revision 1.4), the +12 V and +5 V rails must have voltages equal to or greater than the +3.3 V rail's output at all times. We turn the unit off for our first measurement and switch it back on without a load on any of the rails.
The 3.3 V rail is always at a lower voltage than the other two rails.
EMC Pre-Compliance Testing - Average and Quasi-Peak EMI Detector Results
Electromagnetic Compatibility (EMC) is the ability of a device to operate correctly in its environment without disrupting the proper operation of other close-by devices.
Electromagnetic Interference (EMI) stands for the electromagnetic energy a device emits, and it can cause problems in other close-by devices if too high.
The PSU's EMI filter does a pretty good job.