SilverStone SFX Form Factor Power Supplies
SST-SX700-G, SST-SX650-G, SST-SX500-G
The standard SFX power supply benchmark
- Support standard SFX form factor
- Silent running 92mm fan with 18 dBA minimum
- All Japanese capacitors
- High efficiency with 80 PLUS Gold certification
- Class-leading single +12V rail
- Strict ±3% voltage regulation and low ripple & noise
- 100% modular cables
- All cables made with flexible flat arrays
SPECIFICATION
SFX Form Factor
SST-SX700-G, SST-SX650-G, SST-SX500-G
700W, 650W, 500W Switching Power Supply With Active PFC 80Plus Gold
1. General
1.1 Scope
This specification defines the performance characteristics of a single phase 700 watts, 650 watts, 500 watts, 5 output power supply. This specification also defines worldwide safety and electromagnetic compatibility requirements for the power supply which is intended for use in computer products.
2. Input Characteristics
2.1 Input Voltage
| Nominal Voltage | 100-240 Vrms |
|---|---|
| Voltage Variation Range | 90 - 264 Vrms |
2.2 Input Frequency
| Nominal Frequency | 50-60Hz |
|---|---|
| Frequency Variation Range | 47 Hz to 63 Hz |
* The power supply must operate at above frequency with 90 - 264VACrms input voltage range.
2.3 Max. Input AC Current
| Max. Input Current | 10.0A |
|---|---|
| Measuring Range | 90 - 264Vrms |
2.4 Inrush Current
The power supply must meet inrush requirements for any rated AC voltage, during turn on at any phase of AC 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 ratings of its critical components (including input fuse, bulk rectifiers, and surge limiting device).
2.5 Efficiency
SX700-G, SX650-G, SX500-G provides an efficiency of 87% at 20% load, 90% at 50% load, 87% at 100% load under 115V/60Hz and 230V/50Hz condition.
3. Output characteristics
3.1 Normal Operation Output
SX700-G
| Output Voltage | Load MIN | Range MAX | Peak | Regulation | Ripple P-P Max. | Ripple & Noise P-P Max. |
|---|---|---|---|---|---|---|
| +5V | 0A | 22A | - | ±3% | 50mV | 50mV |
| +3.3V | 0A | 22A | - | ±3% | 50mV | 50mV |
| +12V | 0A | 58.4A | - | ±3% | 120mV | 120mV |
| -12V | 0A | 0.3A | - | ±10% | 120mV | 120mV |
| +5Vsb | 0A | 2.5A | - | ±5% | 50mV | 50mV |
Maximum continuous total DC output power should not exceed 700W. Maximum continuous combined load on +3.3VDC and +5VDC outputs shall not exceed 110W. Maximum combined load on 12V outputs shall not exceed 700W.
NOTE: Noise test should be measured with 20 MHz bandwidth frequency oscilloscope. The output terminal shall add a tantalum capacitor of 10uF in parallel with a ceramic capacitor of 0.1uF.
SX650-G
| Output Voltage | Load MIN | Range MAX | Peak | Regulation | Ripple P-P Max. | Ripple & Noise P-P Max. |
|---|---|---|---|---|---|---|
| +5V | 0A | 22A | - | ±3% | 50mV | 50mV |
| +3.3V | 0A | 22A | - | ±3% | 50mV | 50mV |
| +12V | 0A | 54.2A | - | ±3% | 120mV | 120mV |
| -12V | 0A | 0.3A | - | ±10% | 120mV | 120mV |
| +5Vsb | 0A | 2.5A | - | ±5% | 50mV | 50mV |
Maximum continuous total DC output power should not exceed 650W. Maximum continuous combined load on +3.3VDC and +5VDC outputs shall not exceed 110W. Maximum combined load on 12V outputs shall not exceed 650W.
NOTE: Noise test should be measured with 20 MHz bandwidth frequency oscilloscope. The output terminal shall add a tantalum capacitor of 10uF in parallel with a ceramic capacitor of 0.1uF.
SX500-G
| Output Voltage | Load MIN | Range MAX | Peak | Regulation | Ripple P-P Max. | Ripple & Noise P-P Max. |
|---|---|---|---|---|---|---|
| +5V | 0A | 22A | - | ±3% | 50mV | 50mV |
| +3.3V | 0A | 22A | - | ±3% | 50mV | 50mV |
| +12V | 0A | 41.7A | - | ±3% | 120mV | 120mV |
| -12V | 0A | 0.3A | - | ±10% | 120mV | 120mV |
| +5Vsb | 0A | 2.5A | - | ±5% | 50mV | 50mV |
Maximum continuous total DC output power should not exceed 500W. Maximum continuous combined load on +3.3VDC and +5VDC outputs shall not exceed 110W. Maximum combined load on 12V outputs shall not exceed 500W.
NOTE: Noise test should be measured with 20 MHz bandwidth frequency oscilloscope. The output terminal shall add a tantalum capacitor of 10uF in parallel with a ceramic capacitor of 0.1uF.
3.2 Remote On/Off Controlled mode
The PSON# signal is required to remotely turn on/off the power supply, PSON# is an active low signal that turns on the output power rails. When this is not pulled low by the system, or left open, the outputs (except the +5VSB) turn off. This signal is pulled to a standby voltage by a pull-up resistor internal to the power supply.
TTL level: "H" 2.0 V - 5.25 V, "L" 0.0 V - 1.0 V
3.3 Regulation
The cross regulation defined as follows, the output regulation should be within the specified range.
SX700-G
| Loading | +5V | +3.3V | +12V | -12V | +5Vsb | Pout |
|---|---|---|---|---|---|---|
| 20% | 2.25A | 2.25A | 9.89A | 0.05A | 0.42A | 140.0 W |
| 50% | 5.62A | 5.62A | 24.71A | 0.13A | 1.06A | 350.0 W |
| 100% | 11.23A | 11.23A | 49.43A | 0.25A | 2.12A | 700.0 W |
SX650-G
| Loading | +5V | +3.3V | +12V | -12V | +5Vsb | Pout |
|---|---|---|---|---|---|---|
| 20% | 2.22A | 2.22A | 9.07A | 0.05A | 0.42A | 130.0 W |
| 50% | 5.55A | 5.55A | 22.68A | 0.13A | 1.05A | 325.0 W |
| 100% | 11.10A | 11.10A | 45.37A | 0.25A | 2.09A | 650.0 W |
SX500-G
| Loading | +5V | +3.3V | +12V | -12V | +5Vsb | Pout |
|---|---|---|---|---|---|---|
| 20% | 2.12A | 2.12A | 6.65A | 0.05A | 0.40A | 100.0 W |
| 50% | 5.29A | 5.29A | 16.64A | 0.12A | 1.00A | 250.0 W |
| 100% | 10.58A | 10.58A | 33.27A | 0.24A | 2.00A | 500.0 W |
3.4 Rise Time
DC output rise time is less than 20 mS at nominal line and full load.
3.5 Hold-up Time
PG output maintains at least 16mS is 100% load after power off which hold within para 3.1 under 115V/60Hz and 230V/50Hz condition.
3.6 5VSB
5VSB is required for the implementation of PS-ON described above. 5VSB is a standby voltage that may be used to power circuits that require power input during the powered-down state of all power rails. The 5 VSB pin should deliver 5V ±5% at a minimum of 2.5A for PC board circuits to operate. Conversely, PC board should draw no more than 2.5A maximum from this pin. This power may be used to operate circuits such as soft power.
3.7 PG-OK
PG-OK is a power good signal and should be asserted high by power supply to indicate that the +5 VDC and +3.3 VDC outputs are above the under-voltage thresholds of the power supply. When this signal is asserted high, there should be sufficient mains energy stored by the converter to guarantee continuous power operation within specification. Conversely, when either the +5VDC or the +3.3VDC output voltage falls below the under-voltage threshold, or when mains power has been removed for a time sufficiently long so that power supply operation is no longer guaranteed, PG-OK should be deasserted to a low state. See Figure 1 for a representation of the timing characteristics of the PG-OK, PS-ON, and germane power rail signals.
3.8 3.3V Sense
A default 3.3V sense line should be implemented pin 13 of the connector.
3.9 Capacitive Load
The power supply should be able to power up and operate normally with the following capacitances simultaneously present on the DC outputs.
| Output | Capacitive load (uF) |
|---|---|
| +5V | 10,000 |
| +12V | 10,000 |
| +3.3V | 10,000 |
| -12V | 350 |
| +5Vsb | 10,000 |
4. Protection
4.1 Input Protection
In primary circuit of the power supply, a protected fuse is inserted. Only internal fault of the power supply will cause the fuse blown. Any overload or short circuit at DC output will keep from fuse brown or fire hazard.
4.2 Output Protection
4.2.1 Under voltage protection
The +5V/+3.3V DC output are protected against the under voltage condition. Range value can't be exceed 3.3~3.7V at 5V terminal and 2.0~2.4V at 3.3V.
4.2.2 Over Voltage Protection
The +5V/+12V/+3.3V DC output are protected against the over voltage condition. Maximum value can't be over 6.5V at 5V terminal and 16.0V at 12V, 4.5V at 3.3V.
4.2.3 Over Power Protection
The power supply can be used electronic circuit to limit the output current against exceeding 50% of surge output power or protected against excessive power delivery since short circuit of any output or over total power at high line.
4.2.4 Short Circuit Protection
Short circuit placed on +5V,+12V,+3.3V,-12V will latch off. +5VSB will auto-recovery.
4.2.5 Over-Current Protection
Current protection should be designed to limit the current to operate within safe operating conditions. Over current protection schemes where only the voltage output that experiences the over current event is shut off may be adequate to maintain safe operation of the power supply and the system; however, damage to the motherboard or other system components may occur. The recommended over current protection scheme is for the power supply to latch into the shutdown state. The setting of over current protection for each output rail is as following.
5. Start Stability
5.1 No Load Start
When power is applied to SX700-G, SX650-G and SX500-G with no load connected or under minimum load connected, neither damage to power supply nor hazards to users will occur.
5.2 Cold Start
The power supply shall operate properly when first applied at normal input voltage and or so maximum load after 4 hours storage in 0°C environment.
6. Environments
6.1 Temperature and Humidity
6.1.1 Operating
Temperature: 0 to 40 °C, Relative Humidity: 20 to 90 %
6.1.2 Storage
Temperature: -40 to 70 °C, Relative Humidity: 20 to 95 % noncondensing
6.2 Altitude
The power supply can operate normally at any altitude between 0 to 10000 feet.
6.3 Vibration and Shock
Sweep and resonance search for each of X,Y,Z, axis at the sweep. RATE of 1/OCTAVE/Min.
| Frequency | Duration | Amplitude |
|---|---|---|
| 5-55-10 Hz | 30 minutes | 0.35 mm |
7. Conducted EMI
(No specific text provided in OCR for this section)
8. Product Safety
8.1 Safety Requirement
8.2 Leakage Current
The AC leakage current is less than 3.5mA when the power supply connect to 253Vac/50Hz.
8.3 Insulation Resistance
The insulation resistance should be not less than 30M ohm after applying of 500VDC for 1 minute.
8.4 Dielectric Voltage Withstand
The power supply shall withstand for 1 minute without breakdown the application of a 60Hz 1500V AC voltage applied between both input line and chassis (20mA DC cut-off current). Main transformer shall similarly withstand 3000Vac applied between both primary and secondary windings for a minimum of one minute.
9. Power Good Signal
A TTL compatible signal for the purpose of initiating an orderly start-up procedure under normal input operating conditions. During power up, this signal is asserted (low) until +5V is under regulation and AC reaches min. line specification range. After all voltage are going appropriate level, the system may have a turn on delay of 100mS, but no greater than 500mS. During power off the signal should go to low level before +5V is out of regulation. The low level is 0 to 0.8V and high level is 4.75 to 5.25V. The "Power Good" signal can drive up to 6 standard TTL loads.
Timing Parameters (SX700-G)
- T1: Turn on time (2 sec. Max.)
- T2: Rise time (≤ 20mS Max.)
- T3: Power good turn on delay time (100 < T3 < 500 mS)
- T4: Switch on time (0.5 sec. Max.)
- T5: Power hold-up time (16 mS Min. at 80%load)
- T6: Power good turn off delay time (1.0 mS Min.) 80%load
Power on-off cycle: When the power supply is turned off for a minimum of 2.0 sec. and turn on again, the power good signal will be asserted.
Timing Parameters (SX650-G, SX500-G)
- T1: Turn on time (2 sec. Max.)
- T2: Rise time (≤ 20mS Max.)
- T3: Power good turn on delay time (100 < T3 < 500 mS)
- T4: Switch on time (0.5 sec. Max.)
- T5: Power good turn off delay time (1.0 mS Min.) AC/OFF
- T6: Power hold-up time (16 mS Min. at 100%load)
Power on-off cycle: When the power supply is turned off for a minimum of 2.0 sec. and turn on again, the power good signal will be asserted.
10. MTBF
The MTBF of the power should be 100,000 hours min.
11. Burn-In
11.1 Input Voltage
Applying 230Vac
11.2 Test Condition
Applying 80% loads for the power supply in 40 (+/-5) °C chamber for 4 hours.
12. Harmonics
The product shall meet requirement for EN61000-3-2 & EN61000-3-3:2003 standard of class D, test at 230Vac 50Hz.
13. Power Factor
The power supply with active power factor correction, and meet the EN61000-3-2 standards, The power factor is greater than 0.95 at 230V/50Hz, Max. load.
14. Mechanical Specification
14.1 Physical Dimension
125 mm (W) × 63.5 mm (H) × 100mm (D).
15. POWER SUPPLY CONNECTOR OVERUSE DEFINITION
EN 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 SilverStone'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. SilverStone's warranty will not cover damages or malfunction resulting from usages exceeding these connectors and their associated cables.
FCC Compliance
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
Manufacturer Information
Manufacturer: SilverStone Technology Co., Ltd
Address: 12F No. 168 Jiankang Rd., Zhonghe Dist., New Taipei City 23585 Taiwan R.O.C
Please refer to SilverStone website for latest specifications updates.
