SilverStone ST42GF User Manual

September, 2010

NO.G11212590

Always up reliability and redundancy

ST50GF / ST42GF

500+500W watts maximum output power (ST50GF)
420+420W watts maximum output power (ST42GF)

High efficiency with 80Plus Silver certification (ST50GF)

High efficiency with 80Plus bronze certification (ST42GF)

Industry-leading reliability

1+1 redundant configuration

PS2 mini redundant power

Hot swappable design

Power fault Alarm signals

Durable zinc-plated surface

Convenient pull-out handle bars

SPECIFICATION

SilverStone GEMINI

SST-ST50GF
SST-ST42GF

Mini Redundant Switching Power Supply

With Active PFC

500W+500W
420W+420W

1-4. AC Input Current

SST-ST50GF SST-ST42GF

AC Input

115V

230V

1-5. Efficiency

MAX Units AC Input

8

4

AMPS

AMPS

115V

230V

ST50GF / ST42GF

MAX Units

7

3

AMPS

AMPS

1. Input Requirements

1-1. Input Voltage

The power supply shall be operated at universal input voltage defined in the following table.

lnput Voltage NOMMIN MAX

264Voltage 90 100-240

1-2. Frequency

The input frequency range is from 47Hz to 63Hz.

1-3. Inrush Current

The max inrush current is 100A for 115/230VAC.

1-3-1. Cold Start

Conditions Limits

115/230VAC, full load.

O

25 C ambient.

1-3-2. Warm Start

Conditions Limits

Turn off at 132/264VAC full
load for 1 sec then turn on at
the peak of the input voltage
cycle at 25 Cambient.

O

No component over stress or
damage should occur to the
power supply.
Input fuse shall not blow.

No component over stress or
damage should occur to the
power supply.
Input fuse shall not blow.

The power supply efficiency typical> 82% at 115V，full load.

1-6.Leakage current

3.5mA max, At 240Vac/60Hz.

2. Output Requirements

2-1. Output Regulations

Output
Voltage

+5V

+12V

-12V

+3.3V

+5Vsb

Note:

1. The above voltage range should also include ripple and noise.

2. The output voltage should be measured at the terminals of output connector.

Range

+

5%

-

+

5%

-

+

10%

-

+

5%

-

+

5%

-

MIN

+4.75

+11.40

-10.80

+3.135

+4.75

Nominal

+5.00

+12.00

-12.00

+3.30

+5.00

MAX

+5.25

+12.60

-13.20

+3.465

+5.25

Units

Volts

Volts

Volts

Volts

Volts

01

02

ST50GF / ST42GF

2-2. DC Load Requirements

SST-ST50GF

Output
Voltage

+5V

+12V

-12V

+3.3V

+5Vsb

MIN

1.0

1.0

0

1.0

0.1

NOM

12.5

20

0.4

12.5

1.75

MAX

25

40

0.8

25

3.5

Units

AMPS

AMPS

AMPS

AMPS

AMPS

Note :

1. The maximum continuous total DC output power shall not exceed 500 Watts.

2. The maximum continuous combined load on +5V and +3.3V outputs shall not exceed
170 Watts.

3. The maximum continuous combined load on +5V, +3.3V and +12V, outputs shall not
exceed 488 Watts.

SST-ST42GF

Output
Voltage

+5V

+12V

MIN

1.0

1.0

NOM

12.5

16.5

MAX

25

33

Units

AMPS

AMPS

2-3. Cross Regulation

The DC loads shall remain within the ranges specified in 2-2 DC Load Requirements and
the DC output voltages also shall remain within the regulation ranges specified in 2-1
Output Regulation when measured at the load end of the output connectors.

SST-ST50GF SST-ST42GF

+3.3V +12V -12V -5VSB+5V

1

1

25

15

0.8

0.1

2

25

1

15

0.8

0.1

3

2

2

37

0.8

0.1

1

2
3

+3.3V +12V -12V -5VSB+5V

1

25

10

0.8

0.1

25

1

10

0.8

0.1

2

2

30

0.8

0.1

2-4. +5V standby voltage

The +5Vsb is on whenever the AC power is present.

2-5. DC Output Voltage Ripple and Noise

Output Voltage

+5V

+12V

-12V
+3.3V
+5Vsb

Ripple & Noise Max Units

50
120
120

50

50

mv
mv
mv
mv
mv

Note :

1. The measurements should be made by crossing a 10uF/ electrolytic and a 0.1uF ceramic
disk capacitors at each output with measuring bandwidth from DC to 20 MHz. If ambient
temperature is under 20 C or over 30 C, the AC input should be nominal input.

OO

03

-12V

+3.3V

+5Vsb

0

1.0

0.1

0.4

12.5

1.75

0.8

25

3.5

AMPS

AMPS

AMPS

Note :

1. The maximum continuous total DC output power shall not exceed 420 Watts.

2. The maximum continuous combined load on +5V and +3.3V outputs shall not exceed
150 Watts.

3. The maximum continuous combined load on +5V, +3.3V and +12V, outputs shall not
exceed 404 Watts.

Figure 1. Differential Noise Test Setup

04

2-6. Total Output Power

SST-SG50GF SST-ST42GF

MAX

500 Watts

Units MAX

420 Watts

Units

2-7. Remote ON/OFF Control

The power supply outputs shall be enabled with an active-low TTL signal.
When TTL signal is low, the DC outputs are to be enabled.
When TTL signal is high or open circuited, the DC outputs are to be disabled.
Electronic means or a mechanical switch may activate the TTL signal.
After the TTL signal is active high, must wait for 3 seconds before active low again.

2-8. Power Sequence

ST50GF / ST42GF

2-11. Power Good Delay Time (T3)

MIN

100 500

The test environment is 25 C condition @ nominal input. see1-1

2-12. Power Good Rise Time (T4)

MAX

100 ms

2-13. Hold Up Time (T5)

MIN

16 ms

The test environment is 25 C & full load condition @ nominal input.

2-14. Power Fail Signal (T6)

Power good signal shall go to a down level 1ms before +5V output voltage falls below the
regulation limits during PS-ON signal pull high.

MAX

Units

Units

Units

ms

O

O

05

FIGURE 2. Power Sequence

2-9. Power On Time (T1)

MAX

600 ms

Units

2-10. Rise Time (T2)

MAX

100 ms

Units

MIN

1ms

Units

2-15.Lnitial Delay Time

MAX

1000 ms

Units

3. Protections

3-1. Over Voltage Protection

When the DC outputs (+5V, +12V, +3.3V) have over voltage condition, the power supply shall
provide latch mode over voltage protection.

DC output

+12V

+5V

+3.3V

Max Unit

16.0

7.0

4.5

V
V

V

06

ST50GF / ST42GF

3-2. Short Circuit Protection

A short circuit placed to ground shall cause no damage or power supply shall be shutdown.
(The contact resistance is 0.05 ohm when the outputs short circuit.)

3-3. Protection Reset

When the power supply latches into shutdown condition due to a fault on an +5V,+3.3V,+12V,
output (OVP, UVP,OCP), the protection shall reset after the fault has been removed, use remote
on/off control or recycle the AC power again for a typical of 5 seconds.

3-4. Over Shoot

Any output overshoot at turn on shall be less than 15% of the nominal output value (with
resistive load) as described in sec. 2.1.

3-5. Over Power Protection

At 115/230Vac input the power supply will shut down all DC output within max 150% of full
load.

3-6. Over Current Protection

Max.160% for +5V,+12V,+3.3V dc output rail.

4. Environment

4-1. Operation/Storage Temperature Range

Operation : 0 C to 50 C(nominal input)
Storage : -20 C to 60 C

OO

OO

6. EMI Requirements

6-1.CE
6-2. BSMI (CNS13438:95)
6-3. FCC part 15 sub part J class B at system load
6-4. CISPR 22 CLASS B

7. Dielectric Voltage Withstand (HI-POT)

The power supply shall withstand for 3 seconds without breakdown the application of an
1800Vac-supply voltage applied between both input line and chassis (10mA AC Cutoff
current). Isolating transformers shall similarly withstand 4242Vdc applied between both
primary and secondary windings for a minimum of one minute.

8. PFC

Active Power Factor Correction, complies with EN 61000-3-2: 1995+A1+A2:1998, Class D.

9. Electrostatic Discharge (ESD)

Comply with IEC 61000-4-2.

10. EFT/ Burst

Comply with IEC 61000-4-4.

11. Surge

Comply with IEC 61000-4-5.

07

FIGURE 3. Operation/Storage Temperature Range

4-2. Humidity (none condensing)

Operation: 20% to 90% RH (nominal input)
Storage : 5% to 95% RH

5. Safety

5-1. UL 60950-1
5-2. BSMI (CNS14336:94)
5-3. TUV EN 60950-1:2006+A11
5-4. CB

12. Burn-In

Applying 115 Vac 10 % or 230 Vac 10% input voltage and maximum load (80%) for this
product in 40 5 C chamber.

+

-

O

+

-

+

-

13. M.T.B.F.

The power supply shall have a minimum mean time between failure greater than 100,000
hours Minimum (Without Cooling Fan) at continuous operation of 100% load and an ambient
temperature of 25 C.

O

08

ST50GF / ST42GF

14. Redundant Output Signal:

SIGNAL

RST

M-G

M-F

TTL

R/C

15. Dimension

15-1. Dimension (W x H x D) : 150mm(5.90”) x 86mm(3.38”)x 193mm(7.59”)

15-2. Connectors

WIRE COLOR

WHITE /WHITE

GREEN/BLACK

RED

BLUE/BLACK

PURPLE/BLACK

OUTPUT

S . W

LED (GREEN)

(RED)

Du Pont PIN

FUNCTION

ALARM RESET

MODEL OK

MODEL N.G

EXTERNAL

CONTROL

REMOTE

CONTROL

M/B 24PIN connector

Signal

+3.3V

COM

+5VDC

COM

+5VDC

COM

PWRGOOD

+5Vsb

+12V

+3.3V

Orange
Orange

Blue
Black
Green
Black
Black
Black
White

Red

Red

Red

Red
Black

Signal
+3.3V

+3.3Vsense

-12VDC
COM

PS-ON

COM
COM
COM

N/C
+5VDC
+5VDC

+5Vsense

+5VDC

COM

Pin

13
13
14
15
16
17
18
19
20
21
22
22
23
24

Pin

1 +3.3V Orange

2
3
4
5
6
7
8
9

10 +12V Yellow

11

12

(STATE)

Orange

Black

Red

Black

Red

Black

Grey

Purple

Yellow
Orange

EPS 12V 8PIN

Signal

COM
COM
COM
COM

Black
Black
Black
Black

Yellow
Yellow
Yellow
Yellow

Signal

+12V
+12V
+12V
+12V

Pin

Pin
5
6
7
8

1
2
3
4

ATX 12V 4PIN

Signal

+12V
+12V

Yellow
Yellow

Black
Black

Signal

GND
GND

Pin

Pin
1
2

3
4

4PIN peripheral connector (HDD) 4PIN floppy connector (FDD)

Signal

+5VDC

COM
COM
+12V

Red
Black
Black

Yellow

Yellow

Black
Black

Red

Signal

+12V
COM
COM

+5VDC

Pin

1
2
3
4

Pin

1
2
3
4

SA TA connector

Pin

5
4
3
2
1

Orange

Black

Red

Black

Yellow

Signal
+3.3V

COM

+5V
COM
+12V

6PIN PCI Express connector

Yellow
Yellow
Yellow

Signal

+12V
+12V
+12V

Pin

1
2
3

Pin

Signal
4
5
6

COM
COM
COM

Black
Black
Black

09

10