ST46GF
460W + 460W PS/2 redundant power supply
Industry-leading reliability
Durable zinc-plated surface
Convenient pull-out handle bars
Hot swappable
SPECIFICATION
SilverStone GEMINI ST46GF
Mini Redundant Power Supply
With Active PFC
460W + 460W
1. General
This is the specification of Model SST-ST46GF; it is intended to describe the functions
and performance of the subject power supply. This 460 watts Redundant Power Supply
with Active PFC (Power Factor Correction) capability, meets EN61000-3-2 and equips
Full Range Input features.
2. AC Input Characteristics
2.1 AC Input Voltage, Frequency and Current ( Rating: 100V-240Vac, 47-63Hz, 8-4A )
The power supply must operate within all specified limits over the input voltage range in Table 1.
Harmonics distortion of up to 10% THD must not cause the power supply to go out of specified limits.
01
detaRretemaraPm
Frequency 47 Hz 50 / 60 Hz 63 Hz
Table 1 - AC Input Voltage and Frequency
2.2 AC Inrush Current
The power supply must meets inrush requirements of any rated AC voltage, during turn on at any
phase of voltage, during a single cycle AC dropout condition, during repetitive On/Off cycling of
AC, and over the specified temperature range. The peak inrush current shall be less than the rating
of its critical components (including input fuse, bulk rectifiers, and surge limiting device).
mixaMmuminiM
u
132 Vac 8 AVoltage (115V) 90 Vac 100-120Vac
264V ac 4 AVoltage (230V) 180 Vac 200-240Vac
Max.
Input Current
ST46GF
2.3 Input Power Factor Correction ( Active PFC)
_
The power factor at full load shall be 0.98 at nominal input voltage.
2.4 Input Current Harmonics
When the power supply is operated in 90-264Vac of Sec. 2.1, the input harmonic current drawn
on the power line shall not exceed the limits set by EN61000-3-2 class “D” standards. The power
supply shall incorporate universal power input with active power factor correction.
2.5 AC Line Dropout
An AC line dropout of 17mS or less shall not cause any tripping of control signals or protection circuits.
If the AC dropout lasts longer than 17mS the power supply should recover and meet all turn on
requirements. The power supply shall meet the regulation requirement over all rated AC voltages,
frequencies, and output loading conditions. Any dropout of the AC line shall not cause damage to
the power supply. An AC line dropout is defined as a drop in AC line to 0VAC at any phase of the
AC line for any length of time.
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02
3. DC Output Specification
3.1 Output Current / Loading
The following table defines power and current rating. The power supply shall meet
both static and dynamic voltage regulation requirements for minimum load condition.
Output Voltage
Max. Load
Min. Load
Max. Combined
Total Output
Table 2– Output Loads Range 1:
Note 1: Maximum continuous total DC output power should not exceed 460 W.
3.2 DC Voltage Regulation, Ripple and Noise
The power supply output voltages must stay within the following voltage limits when
operating at steady state and dynamic loading conditions. All outputs are measured
with reference to the return remote sense (ReturnS) signal. The +5V,+3.3V, +12V,
-5V,-12V and +5VSB outputs are measure at the power supply connectors references
to ReturnS. The +5V and +3.3V is measured at its remote sense signal (+5VS, +3.3VS)
located at the signal connector.
Output Voltage
Load Reg.
Line Reg.
+5V
35A
1A
+5V
+/-5%
±1%
220W
+3.3V
22A
1A
436W
+3.3V
+/-5%
±1%
+12V
30A
2A
+12V
+/-5%
±1%
-5V
0.5A
0A
2.5W
-5V
+/-10%
±1%
-12V
1A
0A
12W
-12V
+/-10%
±1%
+5VSB
2A
0.1A
10W
+5VSB
+/-5%
±1%
03
Ripple & Noise
Table 3 – Regulation, ripple and noise
Ripple and Noise shall be measured using the following methods:
a) Measurements made differentially to eliminate common-mode noise
b) Ground lead length of oscilloscope probe shall be ? 0.25 inch.
c) Measurements made where the cable connectors attach to the load.
d) Outputs bypassed at the point of measurement with a parallel combination of
10uF tantalum capacitor in parallel with a 0.1uF ceramic capacitors.
e) Oscilloscope bandwidth of 0 Hz to 20MHz.
f) Measurements measured at locations where remote sense wires are connected.
g) Regulation tolerance shall include temperature change, warm up drift and dynamic load.
50Mv
50mV
120mV
100mV
120mV
50mV
ST46GF
3.3 Timing Requirements
These are the timing requirements for the power assembly operation. The output voltages must rise
from 10% to within regulation limits (Tvout_rise) within 5 to 70mS. The +5V, +3.3V and +12V
output voltages should start to rise at about the same time. All outputs must rise monotonically.
The +5V output needs to be greater than the +3.3V output during any point of the voltage rise.
The +5V output must never be greater than the +3.3V output by more than 2.25V. Each output voltage
shall reach regulation within 50 mS (Tvout_on) of each other during turn on of the power supply.
Each output voltage shall fall out of regulation within 400 mS (Tvout_off) of each other during turn
off. Figure 1 and figure 2 show the turn On and turn Off timing requirement. In Figure 2, the timing
is shown with both AC and PSON# controlling the On/Off of the power supply.
Item
Tvout_rise
Tvout_on
Tvout_off
Description
Output voltage rise time from each main output.(+5Vsb < 70mS)
All main output must be within regulation of each other within this time.
All main output must leave regulation within this time
Table 4 – Output Voltage Timing
Figure 1 : Output Voltage Timing
MIN5MAX
70
50
400
Units
mS
mS
mS
04
3. DC Output Specification
3.1 Output Current / Loading
The following table defines power and current rating. The power supply shall meet
both static and dynamic voltage regulation requirements for minimum load condition.
Item
Tsb_on-delay
Tac_on-delay
Tvout_holdup
Tpwok_holdup
Tpson_on_delay
Tpson_pwok
Tpwok_on
Tpwok_off
Tpwok_low
Tsb_vout
Description
Delay from AC being applied to +5VSB being within regulation.
Delay from AC being applied to all output voltages being within regulation.
All main output voltage stay within regulation after loss of AC
Delay from loss of AC deassertion of PWOK.
Delay from PSON# active to output voltage within regulation limits.
Delay from PSON# deactive to PWOK being deasserted.
Delay from output voltage within regulation limits to PWOK asserted at turn on.
Delay from PWOK deasserted to output voltages (+5V, +3.3V, +12V) dropping
out of regulation limits.
Duration of PWOK being in the deasserted state during an off/on cycle using AC
or the PSON# signal.
Delay from +5VSB being in regulation to O/Ps being in regulation at AC turn on.
Table 5 – Turn On/Off Timing
MIN
18
17
100
100
50
Units
MAX
mS
1500
mS
2500
mS
mS
400
50
500
1000
mS
mS
mS
mS
mS
mS
5
1
05
Figure 2 : Turn On/Off Timing
ST46GF
3.4 Remote On/Off Control : PSON#
The PSON# signal is required to remotely turn on/off the power supply. PSON# is an active low
signal that turns on the +5V, +3.3V, +12V,-5V and -12V power rails. When this signal is not pulled
low by the system, or left open, the outputs (except the +5VSB and V bias) turn off. This signal is
pulled to a standby voltage by a pull-up resistor internal to the power supply.
Signal Type
PSON# = Low
PSON# = High
Accepts an open collector/drain input from the system. Pull-up to VSB located
in power supply.
Power ON
Power OFF
Table 6 – PWOK Signal Characteristic
3.5 Efficiency
The efficiency is 68% at full loading condition to help reduce system power consumption at
typical system loading conditions.
3.6 +5VSB (Standby)
The +5VSB output is always on (+5V Standby) when AC power is applied and power switch is turned on.
The +5VSB line is capable of delivering at a maximum of 2A for PC board circuit to operate.
4. Protection
Protection circuits inside the power supply shall cause only the power supply’s main outputs to shutdown.
If the power supply latches off due to a protection circuit tripping, either a AC cycle OFF for 15 sec, or
PSON# cycle HIGH for 1 sec must be able to restart the power supply.
4.1 Over Power Protection
The OPP function shall work at 130%~270% of rating of output power (when optional external
protect card is not present), then all outputs shut down in a latch off mode.
The latch shall be cleared by toggling the PSON# signal or by cycling the AC power.
The power supply shall not be damaged from repeated power cycling in this condition.
If only one module works inside the power supply, the OPP is at 110%~170% of rating
of power supply.
4.2 Over Voltage Protection
Each hot swap module has respective OVP circuit. Once any power supply module shut down in
a latch off mode while the output voltage exceeds the over voltage limit shown in Table 7, the other
modules should deliver the sufficient power to the device continually.
06
Voltage
Minimum
Maximum
Shutdown Mode
+5V
+3.3V
+12V
5VSB
Table 7 –Over Voltage protection
4.3 Over Current Protection
The power supply should contain the OCP function on each hot swap module.
The power supply should be shut down in a latch off mode while the respective output current
exceeds the limit as shown in Table 8. When the latch has been cleared by toggling the PSON#
single or cycling the AC input power. The power supply module should not be damaged in this
condition.
Voltage
+5V
+3.3V
+12V
Table 8 –Over Current protection
+5.7V
+3.9V
+13.3V
+5.7V
Minimum
110%
110%
110%
+6.5V
+4.5V
+14.5V
+6.5V
Maximum
160%
160%
160%
Latch Off
Latch Off
Latch Off
Auto recovery
Shutdown Mode
Latch Off
Latch Off
Latch Off
4.4 Short Circuit Protection
The power supply shall shut down in a latch off mode when the output voltage is short circuit.
5. Environmental Requirements
5.1 Temperature
Operating Temperature Range:
Non-Operating Temperature Range:
07
0°C ~ 40°C (32°F~ 104°F)
-40°C ~ 70°C (-40°F~ 158°F)
5.2 Humidity
ST46GF
Operating Humidity Range:
Non-Operating Humidity Range:
6. Agency Requirements
6.1 Safety Certification.
Product Safety:
RFI Emission:
PFC Harmonic:
Flicker:
Immunity against:
Electrostatic discharge:
Radiated field strength:
Fast transients:
Surge voltage:
RF Conducted
Voltage Dips and Interruptions
Table 8 –Safety Certification
20% ~ 90%RH non-condensing
5% ~ 95%RH non-condensing
UL 60950-1 2000Edition, IEC60950-1, 3rd Edition
EU Low Voltage Directive (73/23/EEC) (CB) TÜV
FCC Part15 ( Radiated & Conducted Emissions )
CISPR 22,3rd Edition / EN55022: 1998 + A1: 2000)
EN61000-3-2:2000
EN61000-3-3: 1995 + A1: 2002
EN55024: 1998 + A1: 2001 and A2: 2003
IEC 61000-4-2
IEC 61000-4-3
IEC 61000-4-4
IEC 61000-4-5
IEC 61000-4-6
IEC 61000-4-11
6.2 AC Input Leakage Current
Input leakage current from line to ground will be less than 3.5mA rms. Measurement will be made
at 240 VAC and 60Hz.
7. Redundant Power Supply Function
7.1 Redundancy
The redundant power supply is N+1=N (460W+460W=460W) function power supply, each one
module is redundancy when any one module was failed. To be redundant each item must be in the
Hot swap power supply module.
08
7.2 Hot Swap Requirements
The redundant power supply modules shall be hot swappable. Hot swapping a power supply is
the process of inserting and extracting a power supply from an operating. During this process
the output voltage shall remain within the limits specified in Table 7 with the capacitive load
specified Table 9. The Sub-system shall not exceed the maximum inrush current as specified
in section 2.2. The power supply can be hot swapped by the following methods:
AC connecting separately to each module. Up to two power supplies may be on a single AC
●
power source.
Extraction: The AC power will be disconnected from the power supply first and then the
power supply is extracted from the sub-system. This could occur in standby mode or powered
on mode. Insertion: The module is inserted into the cage and then AC power will be connected
to the power supply module.
For power modules with AC docking at the same time as DC. Extraction: The module is
●
extracted from the cage and both AC and DC disconnect at the same Time. This could occur
in standby or power on mode. No damage or arcing shall occur to the DC or AC contacts
which could cause damage. Insertion: The AC and DC connect at the same time as the module
is inserted into the cage. No damage to the connector contacts shall occur. The module may
power on or come up into standby mode.
Many variations of the above are possible. Supplies need to be compatible with these different
variations depending upon the sub-system construction. In general, a failed (off by internal latch
or external control) supply may be removed, then replaced with a good power supply(must use
the same model) , however, hot swap needs to work with operational as well as failed power
supplies. The newly inserted power supply may get turned on by inserting the supply into the
system or by system management recognizing an inserted supply and explicitly turning it on.
09
7.3 LED Indicators
There shell be a single bi-color LED.
The GREEN LED shall turn ON to indicate that all the power outputs are available.
The Red LED shall turn ON to indicate that the power supply has failed, shutdown due to over
current, or shutdown due to component failure.The LED(s) shall be visible on the power supply’s
exterior face. The LED location shall meet ESD requirements.
LED shall be securely mounted in such a way that incidental pressure on the LED shall not cause
it to become displaced.
8. Reliability
8.1 Mean Time Between Failures (MTBF)
The MTBF of the power supply shall be calculated utilizing the Part-Stress Analysis method of
MIL217F or Bell core RPP. The calculated MTBF of the power supply shall be greater than
100,000 hours under the following conditions:
Full rated load
120V AC input
Ground Benign
25°C
9. Physical Characteristics Size
9.1 Power Supply Dimension: 150 mm(W) x 85 mm(H) x 199 mm(D)
ST46GF
10
April, 2012
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