iStarUSA TC-750PD8 사용자 설명서

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3.5.2 OVER- CURRENT PROTECTION

There shall be protection from an output over-current event. The PSU may

shutdown form such an event and require power-on restart.

The overload currents should be ramped at a minimum rate of

10 A/s starting from full load.

Over-current test values:

Output Voltage

3.3V

12V

Protecting trigger condition < 60A

< 45A

< 70A

3.5.3 Short-Circuit Protection

An O/P short circuit is defined as any O/P impedance of less then 0.1 ohms.

The power supply shall shutdown and latch off for shorting +3.3V, +5V or

+12V rail to return or any other rail. and +5VSB shall not cause any damage

to the power supply. The power supply shall either shutdown and latch off or

fold back for shorting negative rail. +5VSB must be capable of being shorted

indefinitely, but when the short is removed, the power supply shall recover

automatically or by cycling PS_ON#. The power supply shall be capable

withstanding a continuous short-circuit to the O/P without damage or

overstress to the unit (for example to components, PCB traces, connectors)

under the I/P conditions specified.

3.6 OUTPUT RISETIME

The cold-start enable main output voltage rise-time of all outputs shall be

measured with maximum load on all outputs. (with

COND.9)

Rise time: +3.3V

20mS (maximum)

(10-90%)

+5V

20mS (maximum)

+12 V 20mS (maximum)

-12 V 20mS (maximum)

The test condition: 115Vac/60Hz

3.7 OUTPUT OVERSHOOT/UNDERSHOOT

No output voltage shall overshoot / undershoot or generate spikes at

turn-on or turn-off, during momentary power loss, output short, or realistic

input voltage or output load changes, Overshoot/undershoot is defined as

any output that exceeds the voltage tolerance plus or minus an additional 5%.

All outputs shall be measured with minimum load (

COND.3

)

Overshoot

Undershoot

+3.3V

3.63V

2.97V

+5V

5.5V

4.5V

+12V

13.2V

10.8V

-12V

-13.8V

-10.2V

+5VSB

5.5V

4.5V