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Protection Features
Check out our PSUs 101 article to learn more about PSU protection features. Our protection features evaluation methodology is described in detail here.
| Protection Features | |
| OCP | 12V: ✗ 5V: 28.2A (112.8%), 4.75V 3.3V: 30A (120%), 3.15V 5VSB: 4.1A (136.67%), 4.787V, 80mV ripple |
| OPP | 1019.74W (119.97%) |
| OTP | ✓ (110°C @ +12V heat sink) |
| SCP | 12V: ✓ 5V: ✓ 3.3V: ✓ 5VSB: ✓ -12V: ✓ |
| PWR_OK | Operates properly |
| NLO | ✓ |
| SIP | Surge: MOV Inrush: 2x NTC thermistors |
We didn't find over-current protection on the +12V rail as we would have expected, though the minor rails' OCP triggering points are normal.
The 5VSB rail registers very high ripple. But this is a problem that we notice under lower loads as well. We did test a second AG-850M and found it to have lower ripple at 5VSB, so something may have been wrong with the first sample.
Over-power protection is set at a reasonable level, and the over-temperature protection is a bit low compared to other PSUs rated for full output at 50°C.
Finally, there is short circuit protection on all rails, the power-good signal is accurate, and we find surge/inrush current protection (though there is no bypass relay to support the NTC thermistors).
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