August, 2011
Always up reliability and redundancy in super small form factor
High efficiency with 80 PLUS Bronze certification
1U redundant power supply with 106mm (W) x 41.5mm (H) x 270mm (D)
300W + 300W 24hour fully continuous power output
Industry-leading reliability
1+1 redundant configuration
Convenient pull-out handle bars
Dual 40mm DC cooling fans
ST30GF
Hot swappable design
Active PFC (full range)
Serial AT A support
SPECIFICATION
SilverStone GEMINI
ST30GF
1U Narrow Redundant Switching Power Supply
With Active PFC
300W+300W
1. General
This is the specification of Model ST30GF; it is intended to describe the functions and
performance of the subject power supply. This 300 watts Redundant Power Supply with
Active PFC (Power Factor Correction) capability, meets EN61000-3-2 and equips Full
Range Input features.
2. AC Input Specifications
ST30GF
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.
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.
2.1 AC Input Voltage, Frequency and Current (Rating: 100V-240Vac, 47-63Hz, 5-2.5A)
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.
Parameter
Voltage (115V)
Voltage (230V)
Frequency
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).
2.3 Input Power Factor Correction (Active PFC)
The power factor at full load shall be 0.98 at 115V input voltage.
The power factor at full load shall be 0.90 at 230V input voltage.
Minimum
90 Vac
180 Vac
47 Hz
Normal
100-120Vac
200-240Vac
50 / 60 Hz
Maximum
132 Vac
264Vac
63 Hz
Max. Current
5A
2.5A
N/A
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 300W.
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, -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.
Ripple & Noise
Table 3 – Regulation, ripple and noise
+5V
20A
1A
+5V
+/-5%
±1%
60mV
+3.3V
20A
1A
284W
+3.3V
+/-5%
±1%
60mV
+12V
24A
2A
N/A120W
+12V
+/-5%
±1%
120mV
-12V
0.5A
0A
N/A
6W
-12V
+/-10%
±1%
120mV
+5VSB
2A
0.1A
N/A
10W
+5VSB
+/-5%
±1%
60mV
01
02
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.
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 must occur first 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 shows 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
Description
Output voltage rise time from each
MIN
5
MAX
70
Units
mS
main output.(+5Vsb < 70mS)
Tvout_on
All main output must be within regulation
N/A
50
mS
of each other within this time.
Tvout_off
All main output must leave regulation
N/A
400
mS
within this time
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 is 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
N/A
N/A
18
17
5
N/A
100
1
100
50
ST30GF
MAX
1500
2500
N/A
N/A
400
50
500
N/A
N/A
1000
Units
mS
mS
mS
mS
mS
mS
mS
mS
mS
mS
03
Table 4 – Output Voltage Timing
04
ST30GF
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
3.5 Efficiency
The efficiency should be measured at 230VAC and with external fan power source at
specified loading. Test efficiency for a module.
20% Load
50% Load
100% Load
Reference www.80plus.org all test conditions.
3.6 +5VSB (Standby)
Accepts an open collector/drain input from the system.
Pull-up to VSB located in power supply.
Power ON
Power OFF
+12V
4.81A
12.03A
24.01A
+5VSB
0.4A
1A
2A
Efficiency
81%
85%
81%
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.
Voltage
+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
Minimum
+5.7V
+3.9V
+13.3V
+5.7V
Minimum
110%
110%
110%
Maximum
+6.5V
+4.5V
+14.5V
+6.5V
Maximum
160%
160%
160%
Shutdown Mode
Latch Off
Latch Off
Latch Off
Auto recovery
Shutdown Mode
Latch Off
Latch Off
Latch Off
4. Protection
05
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.
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 an
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 110%~160% of rating of output power, 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%~160% of rating of power supply.
Table 8 –Over Current protection
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 T emperatur e
Operating Temperature Range:
Non-Operating Temperature Range:
0°C ~ 40°C (32°F~ 104°F)
-40°C ~ 70°C (-40°F~ 158°F)
06
ST30GF
5.2 Humidity
Operating Humidity Range:
Non-Operating Humidity Range:
20% ~ 90%RH non-condensing
5% ~ 95%RH non-condensing
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
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.
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
7. Redundant Power Supply Function
7.1 Redundancy
The redundant power supply is N+1=N (300W+300W=300W) 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.
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 connects with 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.
7.3 LED Indicators
There shell is a single bi-color LED. The GREEN LED shall turn ON to indicate that all the
power outputs are available. The Orange LED shall turn ON to indicate that the power supply
has stand-by or failed shutdown due to over current, the Red LED shall turn ON to indicate
the Fan of the power supply has failed.
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.
07
08
ST30GF
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. Dimension
9.1 Dimension (W x H x D) : 106mm(W) x 41.5mm(H) x 270mm(D)
9.2 Connectors
M/B 24PIN connector
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
Pin
13
1 +3.3V Orange
13
14
15
16
17
18
19
20
21
22
10 +12V Yellow
22
23
11
24
12
2
3
4
5
6
7
8
PWRGOOD
9
Signal
+3.3V
COM
+5VDC
COM
+5VDC
COM
+5Vsb
+12V
+3.3V
Orange
Black
Red
Black
Red
Black
Grey
Purple
Yellow
Orange
EPS 12V 8PIN connector
Yellow
Yellow
Yellow
Yellow
Signal
+12V
+12V
+12V
+12V
Pin
5
6
7
8
Pin
Signal
1
COM
2
COM
3
COM
4
COM
Black
Black
Black
Black
ATX 12V 4PIN connector
Black
Black
Signal
GND
GND
Pin
1
2
Pin
Signal
3
+12V
4
+12V
Yellow
Yellow
4PIN peripheral connector 4PIN floppy connector
Yellow
Black
Black
Red
Signal
+12V
COM
COM
+5VDC
Pin
1
2
3
4
Pin
1
2
3
4
Signal
+5VDC
COM
COM
+12V
Red
Black
Black
Yellow
SATA connector
Orange
Black
Red
Black
Yellow
Signal
+3.3V
COM
+5V
COM
+12V
Pin
5
4
3
2
1
09
10
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