NIGHTJAR SERIES SST-ST40NF Optimum fan-less power supply with stability and silence
SilverStone Nightjar ST40NF 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.
SST-ST40NF 3. INPUT ELECTRICAL SPECIFICATIONS 3.1 AC INPUT Parameter Min. Max. Unit Vin Voltage 99 264 VAC rms Vin Frequency 47 Hz 63 Hz 3.2 INRUSH CURRENT (Cold start – 25 deg. C) 115V No damage 230V No damage 3.3 INPUT LINE CURRENT 115V 5.0 Amps – rms maximum 230V 2.5 Amps – rms maximum 4. ELECTRICAL REQUIREMENTS 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 Required Minimum Efficiency Voltage Full load Typical load 115V >82% >85% Light load >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.
SST-ST40NF 4.2.5 OVERLOAD PROTECTION OUTPUT VOLTAGE Max. overcurrent limit +3.3V 50A +5V 48A +12V 40A 4.2.6 POWER GOOD SIGNAL The power good signal is a TTL compatible signal for the purpose of initiating an orderly star-up procedure under normal input operating conditions. This signal is asserted (low) until +5Vdc has reached 4.75 volts during power up. Characteristics: TTTL signal asserted (low state) : less than 0.4V while sinking 4mA. TTL signal asserted (high state): Between 2.
4.3 OUTPUT TRANSIENT LOAD RESPONSE summarizes the expected output transient step sizes for each output. The transient load slew rate is = 1.0 A/μs. DC Output Transient Step Sizes Output Max. setp size (% of rated output amps per Sec 4.1.1) Max . step size (amps) +12VDC 50% - +5VDC 30% - +3.3VDC 30% - -12VDC - 0.1A +5VSB - 0.5A Load-changing repetition rate of 50 Hz to 10 kHz Ac input range per section 3.1 Capacitive loading per section 4.5 4.4.
SST-ST40NF 4.5 Capacitive Load The power supply should be able to power up and operate normally with the following capacitances simultaneously present on the DC outputs. This capacitive loading should be used to check stability and should not be included for noise testing. Output Capacitive Loads Output ATX12V Capacitive load (μF) +12VDC 5000 +5VDC 6000 +3.3VDC 6000 -12VDC 350 +5VSB 350 5.
5.3 VIBRATION The subject power supply will withstand the following imposed conditions without experiencing non-recoverable failure or deviation from specified output characteristics. Vibration Operating – Sine wave excited, 0.25 G maximum acceleration, 10-250 Hz swept at one octave / min. Fifteen minute dwell at all resonant points, where resonance is defined as those exciting frequencies at which the device under test experiences excursions two times large than non-resonant excursions.
SST-ST40NF 8. LABELLING Label marking will be permanent, legible and complied with all agency requirements. 8.1 MODEL NUMBER LABEL Labels will be affixed to the sides of the power supply showing the following: - Manufacturer’s name and logo. - Model no., serial no., revision level, location of manufacturer. - The total power output and the maximum load for each output. - AC input rating. 9.PHYSICAL REQUIREMENTS 9.1 Physical Dimension 150 mm (W) × 86 mm (H) × 160mm (D) 9.
EPS 12V 8PIN connector Signal Pin Pin Signal Yellow +12V 5 1 COM Black Yellow +12V 6 2 COM Black Yellow +12V 7 3 COM Black Yellow +12V 8 4 COM Black ATX 12V 4PIN (4+4PIN EPS 12V in split mode) Signal Pin Pin Signal Black GND 1 3 +12V Yellow Black GND 2 4 +12V Yellow 4PIN peripheral connector (HDD) 4PIN floppy connector (FDD) Signal Pin Pin Signal Yellow +12V 1 1 +5VDC Red Black COM 2 2 COM Black Black COM 3 3 COM Black Red +5VDC 4 4 +12
SST-ST40NF 8PIN PCI Express connector Signal Pin Pin Signal Yellow +12V 1 5 COM Black Yellow +12V 2 6 COM Black Yellow +12V 3 7 COM Black Black sense1 COM 4 8 COM Black Signal Pin Pin Signal Yellow +12V 1 4 COM Black Yellow +12V 2 5 COM Black Yellow +12V 3 6 COM Black 6PIN PCI Express connector
February, 2009 NO:G1120
