April, 2011
NO:G11214010
NIGHTJAR SERIES
ST50NF
Industrial-class fanless power supply
Fan-less thermal solution, 0 dBA acoustics
Efficiency 82%~85% at 20%~100% loading
500W continuous power output
Strict ±3% voltage regulation
PCI-E 8pin and PCI-E 6pin connector support
Powerful class-leading single +12V rail
Aluminum construction
Server-level components
Support ATX 12V 2.3 & EPS 12V
Active PFC
1-3-2. Warm Start
ST50NF
Silverstone Nightjar
ST50NF
ATX12V / EPS 12V Switching Power Supply
With Active PFC
Fan-less Thermal Solution
80Plus Bronze
PS/2
1. Input Requirements
1-1. Input Voltage
The power supply shall be operated at universal input voltage defined in the following table.
Lnput Voltage
Voltage
1-2. Frequency
The input frequency range is from 47Hz to 63Hz.
MIN
99
NOM
110-240
MAX
264
Conditions
Turn off at 132/264VAC full
load for 1 sec then turn on
at the peak of the input
voltage cycle at 25 C ambient.
o
Limits
No component over stress
or damage should occur to
the power supply.
Input fuse shall not blow.
1-4. AC Input Current
AC Input
115V
230V
MAX
6.5
4
Units
AMPS
AMPS
1-5. Efficiency
The minimum power supply system efficiency shall be >82%, measured at nominal
input voltage 115V or 230V and full loading.
1-6.Leakage current
3.5ma max, At 240Vac/60Hz
2. Output Requirements
2-1. Output Regulations
1-3. Inrush Curr ent
The max inrush current is 100A for 115/230VAC.
1-3-1. Cold Start
Conditions
115/230VAC, full load.
o
25 C ambient.
Limits
No component over stress
or damage should occur to
the power supply.Input fuse
shall ot blow.
01
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
02
ST50NF
2-2-1. 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.
+5V
1
2
3
0.5
18
1
+3.3V
18
0.5
1
+12V
0.5
10
38
-12V
0.5
0.5
0.5
+5VSB
0.1
0.1
0.1
2-3. +5V standby voltage
The +5Vsb is on whenever the AC power is present.
2-2-1. Cross Regulation
Output Voltage
+5V
+12V
-12V
+3.3V
+5Vsb
Ripple & Noise Max
50
120
120
50
50
Units
Mv
Mv
Mv
Mv
Mv
2-5. Total Output Power
Ac Input Voltage
99V~264Vac
MAX
500
Units
Watts
2-6. 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.
2-7. Power Sequence
Note: The measurements should be made by crossing a 47uf/ 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.
Figure 1. Differential Noise Test Setup
oo
03
FIGURE 2. Power Sequence
2-8. Power On Time (T1)
MAX
500
Units
Ms
2-10. Power Good Delay Time (T3)
MIN.
100
The test environment is 25 C condition
@ nominal input. See1-1
MAX.
500
Units
Ms
o
2-9. Rise Time (T2)
MAX.
70
Units
Ms
2-11. Power Good Rise Time (T4)
MAX
10
Units
Ms
04
ST50NF
2-12. Hold Up Time (T5)
MIN.
16
The test environment is 25 C & full
load condition @ nominal input.
Units
Ms
o
2-13. 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.
MIN.
1
Units
Ms
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
16.0
7.0
4.5
Unit
V
V
V
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.
3-7. Over Temperature Protection( Optional )
When power supply temperature over 90 C (typ.)The power supply will be shutdown.
o
4. Environment
4-1. Operation/Storage Temperature Range
Operation:
oo
115V: 0 C to 35 C (Need to increase external forced air cooling) -P1(Note.)
oo
230V: 0 C to 45 C (Need to increase external forced air cooling) -P2(Note.)
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)and OTP, 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.
05
FIGURE 3. Operation/Storage Temperature Range
Caution: Fanless power supply recommends the systems require
additional external forced circulation cooling fan to extend product life.
4-2. Humidity (none condensing)
Operation: 20% to 90% RH(nominal input)
Storage: 5% to 95% RH
06
ST50NF
5. Safety
5-1. UL 60950-1, 2005 (2nd Edition.)
5-2. BSMI (CNS14336: 94)
5-3. TUV EN 60950-1: 2006+A11
5-4. CB
6. EMI Requirements
6-1. CE
6-2. BSMI (CNS13438: 95)
6-3. FCC Part 15 Subpart B, Class B at system load
6-4. CISPR 22 AS/NZS CISPR 22: 2006, 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.
12. Burn-In
Applying 115 Vac ±10 % or 230 Vac ±10% input voltage and maximum load (60%)
for this product in 45
o
±
5 C chamber.
13. M.T.B.F.
The power supply shall have a minimum mean time between failure greater than
80,000 hours Minimum (Without Cooling Fan) at continuous operation of 100%
load and an ambient temperature of 25 C.
o
14. LED Indicators
There are two leds for the monitoring the status of the power supply,which allows
users to perceiveA full awareness of the working condition of the power supply.
The temperature LED indicates surface temperature of the power supply’s housing cage.
Caution: DO NOT TOUCH THE SURFACE OF POWER SUPPLY WHEN
THE TEMP-LED INDICATES RED, IT MIGHT BE DANGEROUS.
Temp. Status
>
High 55 C
=
Low 55 C
>
LED Color
o
o
Red
Green
Power Status
Standby
Power ON
Power Fault
The Status-LED indicates power
supply’s working.
LED Color
Amber
Green
Red
15. MECHANICAL REQUIREMENTS
15.1. Physical Dimension
Dimension (W x H x D): 150mm (5.90”) x 86mm (3.38”) x 160mm (6.29”)
M/B 24PIN connector
Orange
Blue
Black
Green
Black
Black
Black
White
Red
Red
Red
Black
Signal
+3.3V
-12VDC
COM
PS-ON
COM
COM
COM
N/C
+5VDC
+5VDC
+5VDC
COM
Pin
Pin
13
14
15
16
17
18
19
20
21
22
23
24
1
2
3
4
5
6
7
8
9
10
11
12
Signal
+3.3V
+3.3V
COM
+5VDC
COM
+5VDC
COM
PWRGOOD
+5Vsb
+12V
+12V
+3.3V
Orange
Orange
Black
Red
Black
Red
Black
Grey
Purple
Yellow
Yellow
Orange
07
08
ST50NF
EPS 12V 8PIN connector
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 (4+4PIN EPS 12V in split mode)
Black
Black
Signal
GND
GND
Pin
Pin
1
2
3
4
Signal
+12V
+12V
Yellow
Yellow
4PIN peripheral connector (HDD) 4PIN floppy connector (FDD)
Yellow
Black
Black
Red
Signal
+12V
COM
COM
+5VDC
Pin
Pin
1
2
3
4
1
2
3
4
Signal
+5VDC
COM
COM
+12V
Red
Black
Black
Yellow
8PIN PCI Express connector
Yellow
Yellow
Yellow
Black sense1
Signal
+12V
+12V
+12V
COM
Pin
1
2
3
4
6PIN PCI Express connector
Yellow
Yellow
Yellow
Signal
+12V
+12V
+12V
Pin
1
2
3
Pin
Pin
Signal
5
6
7
8
4
5
6
COM
COM
COM
COM
Signal
COM
COM
COM
Black
Black
Black
Black
Black
Black
Black
SATA connector
Orange
Black
Red
Black
Yellow
09
Signal
+3.3V
COM
+5V
COM
+12V
Pin
5
4
3
2
1
10
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