SilverStone ST40NF User Manual
NIGHTJAR SERIES
SST-ST40NF
Optimum fan-less power supply
with stability and silence
SilverStone Nightjar ST40NF
GENERAL DESCRIPTION AND SCOPE
REFERENCE DOCUMENTS
ATX12V 2.3 Switching Power Supply
With Active PFC
PS/2 400W
GENERAL DESCRIPTION AND SCOPE
This is the specification of Model SST-ST40NF; AC-line powered switching power supply
with active PFC (Power Factor Correction) circuit, meet EN61000-3-2 and with AC
Input features 99Vac~264Vac.
REFERENCE DOCUMENTS
The subject power supply will meet the EMI requirements and obtain main safety approvals
as following:
2.1 REFERENCE DOCUMENTS
- FCC Part 15 Subpart J, Class ‘B’ 115 Vac operation.
- CISPR 22 Class ‘B’ 230 Vac operation.
2.2 SAFETY
NEMKO EN 60950-1
- VDE EN 60950-1
- UL 60950-1
- CB EN 60950-1
IEC 60950-1
- CE :
EN 55022:1998+A1: 2000, Class B
EN 61000-3-2: 2000
EN 61000-3-3: 1995+A1: 2001
CISPR22: 1997+A1: 2000, Class B
AS/NZS CISPR 22: 2002, Class B
EN 55024: 1998+A1: 2001
IEC 61000-4-2: 2001
IEC 61000-4-3: 2002
IEC 61000-4-4:1995
+A1:2000+A2: 2001
IEC 61000-4-5: 2001
IEC 61000-4-6: 2001
IEC 61000-4-8: 2001
IEC 61000-4-11: 2001
3. INPUT ELECTRICAL SPECIFICATIONS
3. INPUT ELECTRICAL SPECIFICATIONS
4. ELECTRICAL REQUIREMENTS
3.1 AC INPUT
SST-ST40NF
Parameter
Vin Voltage
Vin Frequency
3.2 INRUSH CURRENT
(Cold start – 25 deg. C)
115V
230V
3.3 INPUT LINE CURRENT
115V
230V
Min. Max. Unit
99
47 Hz
264
63
No damage
No damage
5.0 Amps – rms maximum
2.5 Amps – rms maximum
VAC
rms
Hz
4. ELECTRICAL REQUIREMENTS
4.1 OUTPUT ELECTRICAL REQUIREMENTS
The subject power supply will meet all electrical specifications below, over the full operation
temperature range and dynamic load regulation.
4.1.1. OUTPUT RATING
Output Nominal Regulation Ripple/Noise Min Max Peak
1
2
3
4
5
The +3.3V and +5V total output shall not exceed 130watts, total output power max shall
not exceed 400W ,
+3.3V
+5V
+12V
-12V
+5VSB
±3%
±3%
±3%
±10%
±5%
50mV
50mV
120mV
120mV
50mV
0A
0A
0.2A
0 A
0 A
20.0 A
14.0 A
27.0 A
0.5 A
2.5A
-
-
31.5A
-
3.5A
Ripple and noise measurements shall be made under all specified load conditions
through a single pole low pass filter with 20MHz cutoff frequency. Outputs shall bypassed
at the connector with a 0.1uF ceramic disk capacitor and a 10uF electrolytic capacitor to
simulate system loading.
02
4.2 EFFICIENCY
In Standby mode, +5Vsb efficiency should be greater than 50% with a minimum loading of
100mA under I/P 230Vac.
Efficiency
Loading Voltage Full load Typical load Light load
Required Minimum Efficiency
115V >82% >85% >82%
4.2.1 HOLD-UP TIME (@FULL LOAD)
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.
4.2.2 OUTPUT RISE TIM
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)
4.2.3 OVER VOLTAGE PROTECTION
Voltage Source
+3.3V
+5V
+12V
Protection Point
3.7V-4.5V
5.7V-7.0V
13.1-15.6V
4.2.4 SHORT CIRCUIT PROTECTION
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.
03
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