SILVERSTONE SST-EX350-BF Extreme 350 Bronze User Manual
- June 13, 2024
- SilverStone
Table of Contents
Extreme Series
Extreme 350/450/500 Bronze
80 Plus Bronze 350W/450W/500W SFX power supply
Support standard SFX form factor
24/7 continuous power output with 40
operating temperature
Silent running 92 mm fan with 18dBA minimum
Japanese primary capacitor
High efficiency with 80 PLUS Bronze certification
Class-leading single +12V rail
PCIe 8pin and PCIe 6pin connectors support
SPECIFICATION
SFX Form Factor
SST-EX350-BF
SST-EX450-BF
SST-EX500-B
350W 450W 500W Switching Power Supply With Active PFC 80 PLUS Bronze
Scope
This document defines the industrial quality, SFX 12V size, 350W, 450W, 500W,
5 output power supplies for the application of industrial grade system.
The SFX 12V series of power supplies meet the buss structures of Intel
platform, and the following key features:
- Input: Full Range (90-264Vrms) with Active Power Factor Correction.
- Output: Product is provided with a total of five outputs to meet the requirement of SFX 12V platform.
- Cooling: A 92mm high reliable DC fan is used for cooling the power supply.
Electrical
The electrical specifications that follow are to be met over the environmental
ranges specified in Section 3 unless otherwise noted.
2.1.AC Input
Table 1. lists AC input voltage and frequency range for continuous operation.
The power supply is capable of supplying full-rated output power over the
input voltage ranges specified.
| Parameter | Min | Nominal | Max | Unit |
|---|---|---|---|---|
| Vin Voltage / 350W/450W | 90 | 100-240 | 264 | Vrms |
| Vin Voltage / 500W | 103 | 115-230 | 254 | Vrms |
| Vin Frequency | 47 | 50/60 | 63 | Hz |
| Vin Current /350W | 5.0 | A | ||
| Vin Current /450W | 7.0 | A | ||
| Vin Current /500W | 8.0 | A |
-
The inrush current is less than 100A under the conditions of 240Vrms input and 25 ambient cold start. The inrush current is limited to the extent that no damage will be done to the power supply under any specified line, load, and temperature conditions.
The inrush current will not cause external protection devices (fuses) to trip. -
The leakage current of the power supply module is less than 3.5mA measured at 240Vac input.
-
The repetitive ON/OFF cycling of AC input voltage will not damage the power supply.
-
The power supply can automatically recover from AC power loss.
-
The primary fuse is installed for input over-current protection, and meet product safety requirement.
2.2.DC Output
2.2.1. DC Output Voltage Regulations
The DC output voltages remain within the regulation ranges shown in Table 2.
when measured at the load end of the output connectors under all AC line, O/P
loads, and environmental conditions. The voltage regulation will be maintained
under continuous operation for a period of time equal to the MTBF specified in
section 5.2 at any steady state temperature and operating conditions specified
in section 3.
| +12V | +5V | +3.3V | -12V | +5Vsb | Unit | |
|---|---|---|---|---|---|---|
| Range | ±5% | ±5% | ±5% | ±10% | ±5% | Volt |
| Min | +11.40 | +4.75 | +3.165 | -10.80 | +4.75 | Volt |
| Nom | +12.00 | +5.00 | +3.30 | -12.00 | +5.00 | Volt |
| Max | +12.60 | +5.25 | +3.465 | -13.20 | +5.25 | Volt |
Table 2. DC Output Voltage Regulations
- The remote sense is provided to +12V, +5V, and +3.3V outputs to compensate for excessive cable drops.
2.2.2. DC Output Load Distributions
The Table 3. defines the power supply typical output load distribution.
Output Rail| Output Voltage| Minimum Current (A)| 350W Max. (A)| 450W Max.
(A)| 500W Max. (A)
---|---|---|---|---|---
V1| +12V| 0.0| 29.16| 37.5| 41.66
V2| +5V| 0.0| 18.0| 20.0| 20.0
V3| +3.3V| 0.0| 18.0| 20.0| 20.0
V4| -12V| 0.0| 0.3| 0.3| 0.3
V5| +5Vsb| 0.0| 2.5| 2.5| 2.5
Max. combined O/P of V2 & V3| 110W| 120W| 120W
Table 3. DC Output Load Distribution (350W – 500W)
2.2.3. DC Output Efficiency
The power supply efficiency is 82% minimum measured at 20% & 100%, efficiency
is 85% minimum measured at 50%, which is 115Vrms conditions.
The efficiency is measured in accordance with the definition released by the
80 Plus Organization (Plug Load Solutions). shown in Table 4.
MEET 80 Plus Bronze
| LOAD | 5V | 3.3V | +12V | -12V | +5VSB | SPEC | |
|---|---|---|---|---|---|---|---|
| 350W | 20% | 1.94A | 1.94A | 4.27A | 0.04A | 0.44A | 82% |
| 50% | 4.85A | 4.85A | 10.66A | 0.11A | 1.10A | 85% | |
| 100% | 9.69A | 9.69A | 21.33A | 0.22A | 2.19A | 82% | |
| 450W | 20% | 2.21A | 2.21A | 5.73A | 0.05A | 0.46A | 82% |
| 50% | 5.53A | 5.53A | 14.33A | 0.11A | 1.15A | 85% | |
| 100% | 11.05A | 11.05A | 28.67A | 0.23A | 2.29A | 82% | |
| 500W | 20% | 2.26A | 2.26A | 6.52A | 0.05A | 0.47A | 82% |
| 50% | 5.66A | 5.66A | 16.31A | 0.12A | 1.17A | 85% | |
| 100% | 11.32A | 11.32A | 32.62A | 0.23A | 2.35A | 82% |
Table 4. MEET 80 Plus Bronze
2.2.4. DC Output Ripple & Noise
The output ripple & noise specifications listed in Table 6. will be met
throughout the load ranges as specified in section 2.2.2 and the nominal line
input voltage conditions as specified in section 2.1. Ripple & noise is
defined as periodic of random signals over a frequency band of 10Hz to 20MHz.
Measurements should be made with an oscilloscope with 20MHz bandwidth. Add a
10uF electrolytic capacitor and a 0.1uF ceramic capacitor across output
terminal during ripple & noise measurement.
| +12V | +5V | +3.3V | -12V | +5Vsb | Unit | |
|---|---|---|---|---|---|---|
| Max Ripple & Noise | 120 | 50 | 50 | 120 | 50 | mV P-P |
Table 6. DC Output Ripple & Noise
2.2.5. DC Output Transient Response
The output voltages will remain within the regulation limits +-10%.
The load-changing repetition rate is 50Hz to 10KHz, and the transient load
slew rate 0.5A/us. The maximum step load size, and output capacitive loading
are specified as followings in Table 7.
| +12V| +5V| +3.3V| -12V| +5Vsb
---|---|---|---|---|---
Step Load Size| 60% of Max Load| 30% of Max Load| 30% of Max Load| 0.1A| 0.5A
Capacitive Load| 10000| 10000| 10000| 330| 1000
Table 7. DC Output Transient Response
2.2.6. DC Output Voltage Hold-up Time
The power supply will maintain outputs in regulation per section 2.2.1 despite
a loss of input power at the nominal range of AC input and at 75% of maximum
continuous output load as applicable for a minimum of 10 msec.
2.3. Timing / Housekeeping / control
Figure 1. Power Supply Timing
Notes: T1 is defined is section 2.3.4
T2 is defined in section 2.3.5
T3, T4, T5 and T6 are defined in Table 8.
2.3.1. PWR_OK (Power Good Signal)
PWR_OK is a “power good” signal. It will be asserted high by the power supply
to indicate that the +5V output is above the under voltage threshold listed in
Table 2 of Section 2.2. PWR_OK will be de-asserted to a low state when +5V
output voltage falls below under voltage threshold, or when AC power has been
removed for a time sufficiently such that power supply operation cannot work
normally. The electrical and timing characteristics of the PWR_OK signal are
given in Table 8. and in figure 1.
| Signal type | +5V TTL compatible |
|---|---|
| Logic level low | Less than 0.4V while sinking 10mA |
| Logic level high | Greater than 4.75V while sourcing 200uA |
| High-state output impedance | 1kS2 from output to common |
| PWR_OK delay | 100ms < T3 <500ms |
| PWR OK rise time | 14 S 10ms |
| AC loss to PWR_OK hold-up Time | Is 12ms (at 75% of maximum rated output load) |
| Power-down warning | T6 lms |
Table 8. PWR_OK Signal Characteristics
2.3.2. PS_ON (DC Soft Start)
PS_ON is an active-low, TTL-compatible signal that allows a motherboard to
remotely control the power supply in conjunction with features such as soft
on/off, Wake on LAN, or wake-on modem. When PS_ON is pulled to low-level (1.5V
max.), the power supply will turn on the main DC output rails: +12V, +5V,
+3.3V, and –12V. When PS_ON is pulled to high-level (2.4V min.), the DC output
rails will not deliver current and will be held at zero potential with respect
to ground. PS_ON has no effect to the +5Vsb output, which is always enabled
whenever the AC power is present. Table 9. lists PS_ON signal characteristics.
| Min| Max
---|---|---
Vit., Input Low Voltage| 0.0V| 1.5V
IR, Input Low Current (Vin = 0.4V)| | -1.6mA
VII-1, Input high Voltage (lin = -200uA)| 2.4V|
VIH, open circuit, lin =0| | 5.25V
Table 9. PS_ON Signal Characteristics
2.3.3. +5Vsb (Standby Voltage Output)
+5Vsb is a standby voltage output that is active whenever the AC power is
present.
It provides a power source for circuits that must remain operational when the
four main DC output rails are in a disabled state. Example uses include soft
power control, Wake on LAN, wake on modem, intrusion detection, or suspend
state activities. There is over current protection on the +5Vsb output to
ensure the power supply will not be damaged if external circuits draw more
current than the supply can provide.
2.3.4. Power-on Time
The power-on time is defined as the time from when PS_ON is pulled low to when
the12V, +5V, and +3.3V output are within the regulation ranges specified in
Section 2.2.1. The power-on time will be less than 200ms (T1 <200 ms).
+5Vsb has a power on time of one second max. after the valid AC Voltages
applied.
2.3.5. Rise Time
The output voltage rises from ≤ 10% of nominal to within the regulation ranges
specified in section 2.2.1 within 0.1 ms to 20 ms (0.1 ms ≤ T2 ≤ 20 ms)
2.3.6. Power Sequencing
The +12V and +5V output levels are equal to or greater than the +3.3V output
at all times during power-up and normal operation. The time between the +12V
or +5V output reaching its minimum in-regulation level and +3.3V reaching its
minimum in-regulation level is ≤ 20 msec.
2.3.7. Overshoot at Turn-on / Turn-off
The output voltage overshoot upon the application or removal of the input
voltage, or the assertion / de-assertion of PS_ON will be less than 10% above
the nominal voltage.
2.3.8. Reset after Shutdown
If the power supply latches into a shutdown state because of a fault condition
on its outputs, the power supply can return to normal operation only after the
fault condition has been removed and the PS_ON has been cycled OFF/ON with a
minimum OFF time of 1 second.
2.3.9. +5Vsb at AC Power-down
After AC power is removed, the +5Vsb standby voltage output will remain at its
steady state value for the minimum hold-up time specified in Section 2.2.6
until the output begins to decrease in voltage. The decrease can be monotonic
in nature, dropping to 0.0V. There are no other perturbations of this voltage
at or following removal of AC power.
2.4. Output Protection
2.4.1. Over Voltage Protection
The power supply can provide latch-mode over voltage protection as defined in
Table 10.
| Output | Min. | Nom. | Max. | Unit |
|---|---|---|---|---|
| +12Vdc | 13.6 | 14.6 | 15.6 | Volts |
| +5Vdc | 5.5 | 6.25 | 7.0 | Volts |
| +3.3Vdc | 3.7 | 4.1 | 4.5 | Volts |
Table 10. Over Voltage Protection
2.4.2. Short-circuit Protection
The power supply will shut down and latch off for shorting the +12VDC, +5VDC,
+3.3VDC, and -12VDC rails to return or any other rails. Shorts between main
output rails and +5Vsb will not cause any damage to power supply. +5Vsb can be
capable of being shorted indefinitely, but when the short is removed, the
power supply will recover automatically or by cycling PS_ON. The power supply
can be capable of withstanding a continuous short circuit to the output
without damage or overstress to the unit under the input conditions specified
in section 2.1.
2.4.3. Over Power Protection
Fold back at 120%~150% over peak load
2.4.4. Over Temperature Protection
When OTP is triggered, the main outputs will be latched off. The main outputs
can be reset by cycling the DC remote on/off or AC power. +5Vsb output is auto
recovery when fault condition removed.
2.4.5. No-load Operation
No damage or hazardous condition will occur with all the DC output connectors
disconnected from the load. The power supply may latch into the shutdown
state.
2.4.6. Isolation (High Voltage Withstand)
| Primary to Secondary | 4242Vdc |
|---|---|
| Primary to Earth GND | 2800Vdc |
3. Environmental
The following subsections define recommended environmental specifications and
test parameters. Based on the typical conditions to which an ATX power supply
may be subjected during operation or shipment.
3.1. Temperature
| Operating | 0°C to +4°C |
|---|---|
| Non-operating | -20°C to +70°C |
3.2. Humidity
| Operating | 20% to 90% relative humidity (non-condensing) |
|---|---|
| Non-operating | 5% to 95% relative humidity (non-condensing) |
3.3. Altitude
| Operating | 0 to 10,000 feet |
|---|---|
| Storage | 0 to 50,000 feet |
Electromagnetic Compatibility
The following subsections outline applicable product regulatory specifications
for this power supply.
4.1. Emissions
The power supply can comply with FCC Part 15 and EN55022: 2006 meeting
Class B for both conducted and radiated emissions with a 3 dB margin.
4.2. Immunity
The power supply can comply with FCC Part 15 and EN55022: 2006 meeting Class B
for both conducted and radiated emissions with a 3 dB margin.
4.3. CE Testing(design to meet)
The following standards are applied during the CE testing
EN 55032: 2012
EN 61000-3-2: 2014
EN 61000-3-3: 2013
EN 55024: 2010, including
IEC 61000-4-2: 2009
IEC 61000-4-3: 2010
IEC 61000-4-4: 2012
IEC 61000-4-5: 2014
IEC 61000-4-6: 2013
IEC 61000-4-8: 2010
IEC 61000-4-11: 2004| Class B with 3dB margin minimum
Harmonic Current Measurement
Voltage Fluctuation and Flick Measurement
ESD – air discharge 8kV / ESD contact discharge 6kV
Radiated, Radio Frequency Electromagnetic Field Immunity Test
Electrical Fast Transient/Burst Immunity Test:2kV
Surge Immunity Test – 4kV L/N to PE and 2kV L to N
Immunity to Conducted Disturbances Induced by RF Fields
Power Frequency Magnetic Field Immunity Test
Voltage Dips and Short Interruptions Immunity Test
---|---
Reliability
5.1. Component De-rating
The derating process promotes quality and high reliability. All electronic
components are designed with conservative derating for use in commercial and
industrial environments.
5.2. Mean Time between Failures (MTBF)
100K hours minimum at full load 25 per MIL-HDBK-217F
Mechanical
Dimension W x L x H = 100 x 125 x 63.5mm
POWER SUPPLY CONNECTOR OVERUSE DEFINITION
Power supply connector overuse definition
A single PCIe 8pin cable and connector’s maximum current rating is 12.5A,
which is 150W (+12V x 12.5A). So Silver Stone’s warranty will not cover
damages or malfunction resulting from the use of a graphics card or expansion
card with a single PCIe 8pin connector that exceeds standard 225W total power
draw (150W from PCIe 8pin connector + 75W from PCIe motherboard slot).
Similarly, a graphics card or expansion card with dual PCIe 8pin connectors
that exceed 375W total power draw (300W from two PCIe 8pin connectors + 75W
from PCIe motherboard slot) will also not be covered under warranty.
Peripheral (Molex) or SATA connector’s maximum current rating is 5A, which is
60W (+12V x 5A) or 25W (+5V x 5A). Please ensure connected devices are
operating under these limits. SilverStone’s warranty will not cover damages or
malfunction resulting from usages exceeding these connectors and their
associated cables.
24pin motherboard connector’s maximum current rating for its dual +12V metal
pins are 5A each, which totals 120W (+12V x 5A x 2).
Please ensure +12V drawing devices connected to the motherboard are operating
under these limits. Silver Stone’s warranty will not cover damages or
malfunction resulting from usages exceeding these connectors and their
associated cables.
BSM I ROHS ”
http://www.siIverstonetek.com/downIoads/PSU/RSD.pdf
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
- this device may not cause harmful interference, and
- this device must accept any interference received, including interference that may cause undesired operation.
Model: SST-SX0350FCBR-A
SST-SX0450FCBR-A
SST-SX0500FCBR-A
Please refer to Silver Stone website for latest specifications updates.
Silver Stone Technology Co., Ltd.
www.silverstonetek.com
support@silverstonetek.com
NO. G11242291
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