Load Regulation
Load regulation refers to the regulation of output voltage changes in the event of load fluctuations. Especially in dynamic areas, the quality of a switched-mode power supply becomes apparent when it comes to keeping the output voltage as constant as possible even during violent changes in the output current. Especially with very small loads or with minimum input voltage and full load, very strong overshoots or even dips can occur in extreme cases, which may even lead to malfunctions or damage. Load regulation should be within 1% for 12 V, as well as for the slave rails (5 V and 3.3 V).
est | 12V | 5V | 3.3V | 5VSB | DC/AC (Watts) | Efficiency | Fan Speed (RPM) | PSU Noise (dB[A]) | Temps (In/Out) | PF/AC Volts |
10% | 8.973A | 1.965A | 1.957A | 0.983A | 130.027 | 88.681% | 1594 | 26.1 | 40.59C | 0.818 |
12.084V | 5.09V | 3.373V | 5.086V | 146.619 | 44.82C | 229.87V | ||||
20% | 18.972A | 2.953A | 2.944A | 1.179A | 260 | 92.291% | 1598 | 26.2 | 40.62C | 0.89 |
12.076V | 5.079V | 3.363V | 5.087V | 281.72 | 45.32C | 229.86V | ||||
30% | 29.309A | 3.45A | 3.444A | 1.376A | 389.764 | 93.43% | 1647 | 27.4 | 41.28C | 0.973 |
12.068V | 5.072V | 3.354V | 5.086V | 417.178 | 46.36C | 229.85V | ||||
40% | 39.678A | 3.95A | 3.947A | 1.574A | 519.743 | 93.823% | 1733 | 28.8 | 41.56C | 0.979 |
12.061V | 5.064V | 3.345V | 5.082V | 553.964 | 47.05C | 229.83V | ||||
50% | 49.731A | 4.949A | 4.951A | 1.773A | 649.887 | 93.858% | 1815 | 30.2 | 42.02C | 0.984 |
12.052V | 5.053V | 3.333V | 5.076V | 692.441 | 48.05C | 229.81V | ||||
60% | 59.799A | 5.951A | 5.961A | 1.973A | 780.022 | 93.713% | 1939 | 32.4 | 42.59C | 0.986 |
12.044V | 5.042V | 3.322V | 5.068V | 832.357 | 49.29C | 229.8V | ||||
70% | 69.873A | 6.96A | 6.98A | 2.174A | 910.024 | 93.485% | 1951 | 32.7 | 42.94C | 0.988 |
12.035V | 5.03V | 3.31V | 5.06V | 973.463 | 50.03C | 229.78V | ||||
80% | 79.965A | 7.975A | 8.005A | 2.276A | 1039.601 | 93.155% | 2006 | 33.3 | 43.49C | 0.989 |
12.026V | 5.018V | 3.298V | 5.053V | 1115.968 | 51.52C | 229.77V | ||||
90% | 90.479A | 8.486A | 8.516A | 2.379A | 1169.813 | 92.722% | 2487 | 39.3 | 44.79C | 0.984 |
12.017V | 5.009V | 3.288V | 5.045V | 1261.623 | 54.02C | 229.75V | ||||
100% | 100.764A | 9.005A | 9.064A | 2.986A | 1299.528 | 91.993% | 3300 | 47.2 | 45.20C | 0.986 |
12.006V | 4.999V | 3.277V | 5.024V | 1412.65 | 55.29C | 229.73V | ||||
110% | 111.006A | 10.032A | 10.204A | 2.99A | 1429.78 | 91.391% | 3270 | 47.0 | 46.78C | 0.987 |
11.994V | 4.986V | 3.263V | 5.018V | 1564.491 | 57.71C | 229.72V | ||||
CL1 | 0.116A | 14.393A | 14.337A | 0A | 121.306 | 83.993% | 1678 | 28.0 | 37.67C | 0.821 |
12.076V | 5.017V | 3.326V | 5.035V | 144.418 | 43.26C | 229.87V | ||||
CL2 | 0.116A | 20.011A | 0A | 0A | 101.422 | 82.34% | 1609 | 26.4 | 37.72C | 0.795 |
12.083V | 4.999V | 3.377V | 5.04V | 123.18 | 45.01C | 229.87V | ||||
CL3 | 0.116A | 0A | 19.897A | 0A | 67.386 | 76.351% | 1648 | 27.4 | 39.92C | 0.729 |
12.079V | 5.096V | 3.316V | 5.035V | 88.259 | 49.08C | 229.88V | ||||
CL4 | 108.187A | 0.001A | 0A | 0A | 1299.982 | 92.648% | 2546 | 40.0 | 46.12C | 0.986 |
12.016V | 5.055V | 3.316V | 4.995V | 1403.141 | 57.02C | 229.74V |
Ripple Suppression (Ripple Suppression)
Ripple is high in the full load and overload tests, but I can’t be too picky here since we’re talking about a 1300W SFX unit!
Test | 12V | 5V | 3.3V | 5VSB | Pass/Fail |
10% Load | 11.5 mV | 6.3 mV | 8.3 mV | 9.7 mV | Passport |
20% Load | 18.1 mV | 7.7 mV | 9.1 mV | 12.1 mV | Passport |
30% Load | 23.7 mV | 8.7 mV | 11.2 mV | 15.2 mV | Passport |
40% Load | 28.6 mV | 10.4 mV | 11.3 mV | 16.7 mV | Passport |
50% Load | 34.9 mV | 12.0 mV | 12.7 mV | 23.6 mV | Passport |
60% Load | 40.8 mV | 14.7 mV | 14.3 mV | 21.1 mV | Passport |
70% Load | 44.6 mV | 16.1 mV | 16.5 mV | 19.1 mV | Passport |
80% Load | 45.9 mV | 19.1 mV | 18.9 mV | 21.0 mV | Passport |
90% Load | 50.4 mV | 23.6 mV | 20.3 mV | 20.6 mV | Passport |
100% Load | 82.7 mV | 26.3 mV | 20.9 mV | 21.0 mV | Passport |
110% Load | 94.5 mV | 31.6 mV | 17.7 mV | 20.3 mV | Passport |
Crossload 1 | 18.8 mV | 13.3 mV | 16.5 mV | 6.8 mV | Passport |
Crossload 2 | 10.2 mV | 8.9 mV | 15.2 mV | 5.1 mV | Passport |
Crossload 3 | 9.1 mV | 10.7 mV | 10.5 mV | 5.8 mV | Passport |
Crossload 4 | 81.6 mV | 20.1 mV | 12.8 mV | 9.4 mV | Passport |
Transient Response
Transient response is the amount of deviation in the output voltage as a result of a change in load. If the load changes, the power supply cannot immediately adjust to the new conditions and thus supplies either too much or too little stored energy. The 5V rail drops too low. The 1100W model also had the same problem.
20% Load – 20ms
Voltage | Before | After | Change | Pass/Fail |
12V | 12.070V | 11.913V | 1.30% | Passport |
5V | 5.065V | 4.673V | 7.74% | Fail |
3.3V | 3.356V | 3.223V | 3.97% | Passport |
5VSB | 5.084V | 5.051V | 0.66% | Passport |
50% Load -20ms
Voltage | Before | After | Change | Pass/Fail |
12V | 12.046V | 11.894V | 1.25% | Passport |
5V | 5.038V | 4.651V | 7.69% | Fail |
3.3V | 3.326V | 3.189V | 4.11% | Passport |
5VSB | 5.071V | 5.042V | 0.58% | Passport |
Transient Response ATX v3.0 & 12VHPWR Connector Tests
The power supply successfully passed all ATX v3.0 transient response tests. The 12V rail falls close to the lower limit of 11.04V, but keep in mind that I reached it with a 2600W load, and this is an SFX unit!
- 1 - Einführung, technische Daten und Testreport
- 2 - Unboxing, Kabel und Schutzschaltungen
- 3 - Teardown: Topologie, Komponenten, Verarbeitung
- 4 - Load Regulation, Ripple Suppression, Transient Resonse
- 5 - Hold-Up Time, Timings, Inrush-Current
- 6 - Average Efficiency and PF
- 7 - Betriebsgeräusch und Lüfter
- 8 - Zusammenfassung und Fazit
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