SilverStone SST-ST40NF [4/12] St40nf manual 3

4.2 EFFICIENCY

4.2.1 HOLD-UP TIME (@FULL LOAD)

4.2.2 OUTPUT RISE TIM

4.2.4 SHORT CIRCUIT PROTECTION

Efficiency

In Standby mode, +5Vsb efficiency should be greater than 50% with a minimum loading of

100mA under I/P 230Vac.

99V ~264V: 17 mSec. Minimum.

The output voltage will remain within specification, in the event that the input power is

removed or interrupted, for the duration of one cycle of the input frequency. The interruption

may occur at any point in the AC voltage cycle. The power good signal shall remain high

during this test.

For all output range voltages shall rise from 10% of nominal to within the regulation ranges

specified in Section 4.1.1 within 0.1 ms to 20 ms (0.1 ms T1 20 ms).

(10% TO 90% OF FINAL OUTPUT VALUE, @FULL LOAD)

Output short circuit is defined to be a short circuit load of less than 0.1 ohm.

In the event of an output short circuit condition on +3.3V, +5V, -12V or +12V, the power supply

will shutdown and latch off without damage to the power supply. The power supply shall

return to normal operation after the short circuit has been removed and the power switch has

been turned off for no more than 2 seconds.

Loading Voltage Full load Typical load Light load

Required Minimum Efficiency

115V >82% >85% >82%

Voltage Source

+3.3V

+5V

+12V

3.7V-4.5V

5.7V-7.0V

13.1-15.6V

Protection Point

4.2.3 OVER VOLTAGE PROTECTION