SilverStone Extreme 1200R Platinum
Model: SST-EX1200R-PL
Type: 1200W Switching Power Supply with Active PFC, Cybenetics Platinum, SFX-L Form Factor
The SilverStone Extreme 1200R Platinum is a fully modular SFX-L form factor power supply designed for Small Form Factor (SFF) ecosystems. It supports the SFX12V 4.1 and PCIe Gen 5 standards, featuring a 12V-2x6 PCIe connector. It delivers 1200W of continuous power output rated for 24/7 operation, with a class-leading single +12V rail providing 100A. The unit includes a silent 120mm FDB bearing fan with advanced semi-fanless operation and is constructed with high-quality Japanese capacitors. Newly designed embossed modular cabling simplifies system assembly and cable management.
Specification
This specification defines a Micro-ATX (SFX-L 1.1) form-factor and SFX12V 4.0 multiple output switching power supply. It defines maximum continuous output at 1200W with 100 to 240Vac input, supporting five outputs: +3.3V, +5V, +12V, -12V, and +5VSB. Features include +5V standby voltage, remote on/off control, and full-range line input capability. An IEC connector is provided for AC input. The power supply incorporates fans for cooling while meeting acoustic requirements.
1. AC Input Characteristics
1.1 AC Input Requirements
The input voltage, current, and frequency requirements for continuous operation are stated in Table 1.
| Parameter | Min | Nom | Max | Unit |
|---|---|---|---|---|
| Vin | 90 | 100 - 240 | 264 | VACrms |
| Vin Frequency | 47 | 60 - 50 | 63 | Hz |
| lin | 14 | - - 7 | A |
1.2 AC Inrush Current (Cold Start)
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. DC Output Characteristics
2.1 Output Voltage Regulation Requirements
The power supply output voltage must stay within the following voltage limits shown in Table 2 when operating at steady state.
| Parameter | Load Regulation | Total Range | Min | Nom. | Max | Unit |
|---|---|---|---|---|---|---|
| +3.3V | +/-3% | +/-5% | +3.14 | +3.30 | +3.47 | Volts |
| +5V | +/-3% | +/-5% | +4.75 | +5.0 | +5.25 | Volts |
| +12V | +/-3% | +5%/-7% | +11.20 | +12.0 | +12.6 | Volts |
| -12V | +/-10% | +/-10% | -10.8 | -12.0 | -13.2 | Volts |
| +5VSB | +/-5% | +/-5% | +4.75 | +5.0 | +5.25 | Volts |
2.2 Output Current Requirements
The power supply output current is shown in Table 3.
| Parameter | Min | Max | Peak | Unit |
|---|---|---|---|---|
| +3.3V | 0 | 20 | Amps | |
| +5V | 0 | 20 | Amps | |
| +12V | 0 | 100 | Amps | |
| -12V | 0 | 0.3 | Amps | |
| +5VSB | 0 | 3 | Amps |
Notes: 1. +3.3V and +5V combined load shall not exceed 100W. 2. The average maximum continuous DC output power shall not exceed 1200W.
2.3 Output Transient Response
Table 4 summarizes the expected output transient step sizes for each output. The +3.3V & +5V transient load slew rate is 1.0 A/μs. The +12V transient load slew rate is 5.0 A/μs.
| Parameter | Maximum Step Size (% of rated output amps) | Maximum Step Size (A) |
|---|---|---|
| +3.3V | 30% load | |
| +5V | 30% load | |
| +12V | 85% load | |
| +12V (12VHPWR) | Steps from 100%→300% | |
| -12V | 30%-100% | 0.1A |
| +5VSB | 0.5A |
Notes: 1. For example, for a rated +5 VDC output of 14A, the transient step would be 30% x 14 A = 4.2 A. 2. Output voltages should remain within the regulation limits of Section 2.1 and the power supply should be stable when subjected to load transients per Table 3 from any steady state load, including any or all of the following conditions: 3. Simultaneous load steps on the +12 VDC, +5 VDC, and +3.3 VDC outputs (all steps occurring in the same direction). 4. Load-changing repetition rate of 50 Hz to 10 kHz. 5. AC input range per Section 1.1 and Capacitive loading per Table 8. 6. The +12V min start load is 5A minimum at dynamic load response test.
2.4 Output Ripple and Noise
The output ripple and noise are detailed in Table 5.
| Output | Ripple and Noise | Unit |
|---|---|---|
| +3.3V | 40 | mVp-p |
| +5V | 40 | mVp-p |
| +12V | 80 | mVp-p |
| -12V | 80 | mVp-p |
| +5VSB | 40 | mVp-p |
Note: 1. When total load is 20W (2% loading), +12V noise is 120mV. 2. This is measured over a bandwidth of 10Hz to 20MHz at the power supply output connector. A 10µF electrolytic capacitor in parallel with a 0.1µF ceramic capacitor is placed at the point of measurement.
Figure 1: Differential Noise Test Setup
The diagram shows the power supply connected to a load. A filter comprising a 10µF electrolytic capacitor and a 0.1µF ceramic capacitor in parallel is placed at the measurement point. An oscilloscope is used for measurement. General notes specify loading conditions, probe connections, and repeating measurements. Filter notes detail capacitor types and ratings. Oscilloscope notes recommend specific equipment.
2.5 Efficiency
In the 115Vac/60Hz input voltage, the power supply efficiency is more than 94%.
| Load | Efficiency(%) | Power Factor |
|---|---|---|
| 2% | 60 | -- |
| 20% | 90 | -- |
| 50% | 92 | >0.95 |
| 100% | 89 | -- |
Note: There is a 1% tolerance in mass production.
2.5.2 ERP 5VSB Efficiency
| +5VSB LOAD | Efficiency target (both 110V and 230V input) |
|---|---|
| 3A | 75% |
| 1.5A | 75% |
| 1A | 75% |
| 0.55A | 75% |
| 90mA | 55% |
| 45mA | 45% |
2.6 Remote On/Off Control
When the logic level "PS-ON" is low, the DC outputs are enabled. When the logic level is high or open collector, the DC outputs are disabled.
2.7 Overshoot
The overshoot of the DC output voltage caused by switching AC power or switch PSON# should be less than 10% of the normal output, and no reverse polarity voltage should be produced.
2.8 Capacitance Loading
The power supply shall be stable and meet all requirements with the following capacitive loading ranges.
| Output | Capacitive Load (μF) |
|---|---|
| +3.3V | 3,300 |
| +5V | 3,300 |
| +12V | 3,300 |
| -12V | 3,30 |
| +5VSB | 3,300 |
3. Environment
3.1 Operation Temperature
| Temperature | Relative Humidity |
|---|---|
| 0 to 50°C | 5% to 90%, on-condensing |
3.2 Shipping and Storage
| Temperature | Relative Humidity |
|---|---|
| -40°C ~ 70°C | 5% to 95%, non-condensing |
3.3 Altitude
| Operating | ≤2000m |
| Storage | ≤3000m |
3.4 Cooling Mode
Forced air cooling.
3.5 Random Vibration
Non-operating: 0.01 g²/Hz at 5 Hz, sloping to 0.02 g²/Hz at 20 Hz, and maintaining 0.02 g²/Hz from 20 Hz to 500 Hz. The area under the PSD curve is 3.13 grams. The duration shall be 10 minutes per axis for all three axes on all samples.
4. Protection
Due to overvoltage, over power, and short circuit, the protection function of the power supply circuit is self-operated, and the power is self-locked. There is no output at that time. When these conditions are removed, the power is restored to the normal output state when the power is restarted (PSON# at least 1 second; AC shutdown at least 4 seconds).
4.1 Over-power Protection
The power supply will be shutdown and latch off when output power is within 110-150% of rated DC output. Note: The assurance machine can work at low voltage, full load won't damage the machine.
4.2 Over Voltage Protection
| Output | Output voltage protection point | Unit | ||
|---|---|---|---|---|
| Min | Nom | Max | ||
| +3.3V | 3.76 | 4.2 | 4.3 | V |
| +5V | 5.74 | 6.3 | 7.0 | V |
| +12V | 13.4 | 15.0 | 15.6 | V |
| +5vsb | 5.74 | 6.3 | 7.0 | V |
4.3 Short Circuit Protection
An output short circuit is defined as any output impedance of less than 0.1 ohms. The power supply shall shut down and latch off for shorting the +3.3VDC, +5 VDC, or +12VDC rails to return or any other rail. Shorts between main output rails and +5VSB shall not cause any damage to the power supply. The power supply shall either shut down and latch off or fold back for shorting the negative rails. +5VSB must be capable of being shorted indefinitely, but when the short is removed, the power supply shall recover automatically or by cycling PS_ON#. The power supply shall be capable of withstanding a continuous short-circuit to the output without damage or overstress to the unit.
4.4 Over Temperature Protection
The power supply will be protected against over temperature conditions caused by loss of fan cooling or excessive ambient temperature. In an OTP condition, the PSU will shutdown. When the power supply temperature drops to within specified limits, the power supply shall latch mode.
4.5 Over Current Protection
The power supply shall have current limit to prevent the +3.3 V, +5 V, and +12V outputs from exceeding the values shown in Table 13. If the current limits are exceeded, the power supply shall shutdown and latch off. The damaged from repeated power cycling in this condition. -12V and 5VSB shall be protected under over current or shorted conditions so that no damage can occur to the power supply. All outputs shall be protected so that no damage occurs to the power supply under a shorted output condition.
| Voltage | Over Current Limit (Iout limit) |
|---|---|
| +3.3V | 22A minimum; 30A maximum |
| +5V | 22A minimum; 30A maximum |
| +12V | 110A minimum; 150A maximum |
5. Power Supply Timing
5.1 Signal Timing Drawing
Figure 2 is a reference for signal timing for main power connector signals and rails.
Figure 2: Signal Timing Diagram
The diagram illustrates the timing relationships between AC power on (VAC), the PS_ON# signal, DC outputs (+12VDC, +5VDC, +3.3VDC), and the Power Good signal (PWR_OK). Key timing parameters T0 through T6 are defined in Table 14, covering AC power on time, power-on time, rise time, PWR_OK delay, PWR_OK rise time, AC loss to PWR_OK hold-up time, and PWR_OK inactive to DC loss delay.
| Parameter | Description | Required |
|---|---|---|
| T0 | AC power on time | <2s |
| T1 | Power-on time | < 150ms |
| T2 | Rise time | 0.2 - 20 ms |
| T3 | PWR_OK delay | 100 - 150ms |
| T4 | PWR_OK rise time | < 10 ms |
| T5 | AC loss to PWR_OK hold-up time | > 16 ms |
| T6 | PWR_OK inactive to DC loss delay | >1ms |
The power supply should maintain output regulations per Table 5 despite a loss of input power at the low-end nominal range (115 VAC / 47 Hz or 230 VAC / 47 Hz) at maximum continuous output load as applicable for a minimum of 17ms (T5+T6).
6. Safety
The power supply is designed to meet IEC 62368-1.
6.1 Electrical Strength
Gradually increased from 0V to 1500V is applied between the AC line and the casing, and then kept for 1 minute. The insulation should not breakdown. If the current increases rapidly due to the test voltage and gets out of the way, it is to limit the current. Insulation breakdown that has occurred; corona discharge or flashover is not a single moment that is the breakdown of insulation.
6.2 Ground Resistance
Ground resistance value less than < 0.1 ohm (40A).
6.3 Touch Current
When the input is 250Vac, contact current is less than 3.5mA at 25°C.
6.4 EMC
The power supply complies with the following EMC standards:
- ELECTROSTATIC DISCHARGE (ESD) – IEC 61000-4-2 (EN 61000-4-2)
- RADIATED SUSCEPTIBILITY – IEC 61000-4-3 (EN 61000-4-3)
- ELECTRICAL FAST TRANSIENT / BURST (EFT/B) – IEC 61000-4-4 (EN 61000-4-4)
- SURGE – IEC 61000-4-5 (EN 61000-4-5)
- CONDUCTED SUSCEPTIBILITY – IEC 61000-4-6 (EN 61000-4-6)
- POWER FREQUENCY MAGNETIC FIELD – IEC 61000-4-8 (EN 61000-4-8)
- VOLTAGE DIPS – IEC 61000-4-11 (EN 61000-4-11)
- VOLTAGE FLUCTUATIONS – IEC 61000-3-3 (EN 61000-3-3)
- HARMONIC CURRENT EMISSION – IEC61000-3-2 (EN 61000-3-2)
- EN55032: Class B Radio interference (CISPR 32)
- ANSI C63.4-2014 / FCC Part 15 Subpart B / ICES-003 Issue 6 Class B 115VAC operation
7. Reliability
The demonstrated MTBF shall be 100,000 hours of continuous operation at 25°C and full load and nominal voltage. The MTBF of the power supply shall be calculated in accordance with MIL-HDBK-217F. The DC FAN is not included.
8. Mechanical
Physical Dimension: L125mm x W130mm x H63.5mm
9. FAN SPEED CONTROL
- Fan voltage varies with the ambient temperature or output power.
- Semi-Fanless function @ 20%~30% max load at 25°C.
10. Power Supply Connector Overuse Definition
This section defines the limits for power supply connector usage to prevent damage and maintain warranty coverage.
EN: Power Supply Connector Overuse Definition
A single PCIe 8-pin cable and connector's maximum current rating is 12.5A, which is 150W (+12V x 12.5A). SilverStone's warranty will not cover damages or malfunction resulting from the use of a graphics card or expansion card with a single PCIe 8-pin connector that exceeds a standard 225W total power draw (150W from PCIe 8-pin connector + 75W from PCIe motherboard slot). Similarly, a graphics card or expansion card with dual PCIe 8-pin connectors that exceed a 375W total power draw (300W from two PCIe 8-pin 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.
The 24-pin motherboard connector's maximum current rating for its dual +12V metal pins is 5A each, totaling 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.
11. Installation and Safety Guidelines
For user safety and fire prevention, installation of this switching power supply must be within an enclosure that meets the following requirements:
- Enclosure material must be fire-resistant.
- The maximum diameter of circular openings on the top and sides of the enclosure must not exceed 5mm.
- The diagonal distance of slotted openings on the top and sides of the enclosure must not exceed 5mm. If the width is less than 1mm, the length is not restricted.
- There should be no openings on the bottom of the enclosure.
This product outputs hazardous energy. To avoid danger during operation, only turn on the power after installing it into the system chassis and ensuring all devices are properly installed.
This product's power output is not current-limited. Please connect it to peripherals with fire-resistant enclosures to prevent fire hazards.
For BSMI ROHS information, refer to: http://www.silverstonetek.com/downloads/PSU/RSD.pdf
Hazardous Substances / Elements and Their Chemical Content:
| Part Name | Lead (Pb) | Mercury (Hg) | Cadmium (Cd) | Hexavalent Chromium (Cr(VI)) | Polybrominated Biphenyls (PBB) | Polybrominated Diphenyl Ethers (PBDE) |
|---|---|---|---|---|---|---|
| Enclosure | ○ | ○ | ○ | ○ | ○ | ○ |
| Connector | ○ | ○ | ○ | ○ | ○ | ○ |
| Fan | ○ | ○ | ○ | ○ | ○ | ○ |
| Electronic Card | ○ | ○ | ○ | ○ | ○ | ○ |
| Wire Material | ○ | ○ | ○ | ○ | ○ | ○ |
| Screw | ○ | ○ | ○ | ○ | ○ | ○ |
| Packaging Material | ○ | ○ | ○ | ○ | ○ | ○ |
○: Indicates that the content of the hazardous substance in all homogeneous materials of this part is within the limit requirement specified in GB/T 26572. X: Indicates that the content of the hazardous substance in at least one homogeneous material of this part exceeds the limit requirement specified in GB/T 26572.
Product Qualification Certificate
Inspector: 检01
Production Date: See product barcode
12. Compliance Information
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.
Model (safety certification): SST-SL1200MCPT-A
The equipment is a Class I Switching Power Supply intended for use with information technology equipment or Audio and Video equipment.
Please refer to SilverStone website for latest specifications updates.
Home
