Page 1:Features & Specifications
Page 2:Unboxing Video
Page 3:Teardown & Component Analysis
Page 4:Load Regulation, Hold-Up Time & Inrush Current
Page 5:Efficiency, Temperature & Noise
Page 6:Protection Features & DC Power Sequencing
Page 7:Cross-Load Tests & Infrared Images
Page 8:Transient Response Tests
Page 9:Ripple Measurements
Page 10:EMC Pre-Compliance Testing
Page 11:Performance, Value, Noise & Efficiency
Page 12:Final Analysis
Protection Features & DC Power Sequencing
|OCP||12V: 78.6A (145.56%), 11.818V|
5V: 32.5A (135.42%), 4.915V
3.3V: 38.7A (161.25%), 3.293V
5VSB: 5.6A (186.67%), 4.91V
|OTP||✓ (150°C @ +12V heat sink)|
|PWR_OK||Does not function correctly|
Inrush: NTC thermistor
The +12V rail's over-current protection threshold is set very high, and the same goes for the 3.3V and 5VSB rails. On the other hand, over-temperature protection is configured reasonably for a PSU that doesn't feature semi-passive operation.
Unfortunately, the power-good signal is not accurate, leading to the first time we've observed anything less than a clean drop of the signal once power is removed. And it's a great shame that there is no MOV in this PSU; voltage surges can cause trouble as a result.
DC Power Sequencing
According to Intel’s latest Power Supply Design Guide (revision 1.4), the +12V and 5V voltages must be equal or greater than the 3.3V rail’s output during power-up and normal operation.
For our first measurement, we turn the PSU off and switch it back on without any load. Next, we set the PSU to standby mode, dial full load, and then start the PSU. In the last test, while the PSU is completely turned off (we cut power or switch the PSU off), we dial full load before restoring power.
The 3.3V rail came close to what we saw from the 5V one. In fact, it briefly exceeded the 5V rail's voltage, indicating a problem.
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- Features & Specifications
- Unboxing Video
- Teardown & Component Analysis
- Load Regulation, Hold-Up Time & Inrush Current
- Efficiency, Temperature & Noise
- Protection Features & DC Power Sequencing
- Cross-Load Tests & Infrared Images
- Transient Response Tests
- Ripple Measurements
- EMC Pre-Compliance Testing
- Performance, Value, Noise & Efficiency
- Final Analysis