SilverStone ST85F-GS [7/12] Manual st85f gs p158 st75f gs p159 p6

ST85F-GS / ST75F-GS

3.6 Short circuit

An output short circuit is defined as any output impedance of less than 0.1 ohms.

The power supply shall shut down and latch off for shorting the +3.3 VDC,+5 VDC,

or+12 VDC rails to return or any other rail. Shorts between main output rails and +5VSB

shall not cause any damage to the power supply. The power supply shall either shut

down and latch off or fold back for shorting the negative rails.+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 of withstanding

a continuous short-circuit to the output without damage or overstress to the unit.

3.7 No load operation

No damage or hazardous condition should occur with all the DC output connectors

disconnected from the load.The power supply may latch into the shutdown state.

Figure 2. PS-OK Timing Sequence

(1) T3: Power good signal turn on delay time (100ms~500ms)

(2) T4: Power good signal turn off delay time (1ms min)

(3) T2: Rise time (0.1~70ms)

(4) T6: Hold up time

4.1 Signal timing drawing

Figure 2. is a reference for signal timing for main power connector signals and rails.

4. TIMING