Protection Features Evaluation

During the OPP (cold) evaluation, the PSU died, so I couldn't finish all tests. How did it die? I increased the load on all rails until the PSU shut down as it should. I left it to cool down and tried to restart it after five minutes, but was treated with fireworks and a loud bang. I had pushed its cheap primary switching FETs too far, so Gigabyte should lower the OPP and +12 V OCP triggering points.

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 the unit off 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 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.

There is no graph here because I couldn't conduct EMC Pre-Compliance testing. My sample died before I reached this testing session.