Protection Features Evaluation

OCP at +12 V is reasonably set for the platform's capabilities, and the same goes for the 5 V rail. On the other hand, OCP at 3.3 V is set quite high for no good reason.

OPP is higher than 130% to allow the PSU to handle power spikes without shutting down. You should not make the PSU exceed its maximum rated power output for prolonged periods of time, however.

Even though essential in a PSU, there is unfortunately no over temperature protection, and this platform lacks surge protection as well.

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. For our first measurement, we turn off the unit 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 Peak EMI Detector Results

Electromagnetic Compatibility (EMC) is the ability of a device to operate properly 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.



Conducted EMI emissions are low. The EMI filter does a very good job.