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Protection Features
Our protection features evaluation methodology is described in detail here.
|
Protection Features |
|
|
OCP |
12V: 66.2A (132.4%), 12.033V |
|
OPP |
810.1W (135.02%) |
|
OTP |
✓ (140°C @ Secondary Side) |
|
SCP |
12V: ✓ |
|
PWR_OK |
Proper Operation |
|
NLO |
✓ |
|
SIP |
Surge: MOV |
The OCP triggering points on almost all rails are ideally set at close to 130%, with only the 3.3V rail exceeding 140%. The over power protection is at 135% which is a bit high, but this platform is solid so most likely there won't be any issues, even under very high operating temperatures.
The over temperature protection is present and working well, while there is short circuit protection on all rails. Finally, the power ok signal is accurate and there is surge and inrush current protection. In general this is a well protected platform.
DC Power Sequencing
According to Intel’s most recent Power Supply Design Guide (revision 1.4) the +12V and 5V voltages must be equal or greater than the 3.3V rail output at all times, during the power-up and normal operation. For our first measurement, we turn the unit off and switch it back on without any load in any of the rails.
In the second test, we set the PSU to standby mode, dial full load and start it afterwards. In the last test, while the power supply is completely switched off (we cut off the power or switch the supply off through its power switch), we dial full load before restoring power.
As expected from a high-end PSU like this one, no problems during the DC power sequencing tests. There is a voltage overshoot at +12V though, but it doesn't affect in any way the outcome of those tests.
