Specifications
Model Series: SilverStone Strider Platinum
Models: SST-ST1200-PT, SST-ST1000-PT
Type: ATX12V / EPS 12V Switching Power Supply with Active PFC, 80Plus Platinum, PS/2 form factor.
This specification details requirements for 1000W and 1200W switching power supplies with ATX form-factor, EPS 12V, +5V standby voltage, remote on/off control, full range line input, and forced air cooling.
1. AC Input
1.1 AC Input Requirements
Table 1: AC Input Line Requirements (ST1000-PT)
| Parameter | Min. | Nom. | Max. | Unit |
|---|---|---|---|---|
| Vin(Full range) | 90 | 100---240 | 264 | VACrms |
| Vin Frequency | 47 | 60-----50 | 63 | Hz |
| Iin(1000W) | 12-------6 | Arms |
Table 2: AC Input Line Requirements (ST1200-PT)
| Parameter | Min. | Nom. | Max. | Unit |
|---|---|---|---|---|
| Vin( Full range ) | 105 | 115---240 | 264 | VACrms |
| Vin Frequency | 47 | 60-----50 | 63 | Hz |
| Iin(1200W) | 12.6---6 or 12---6 | Arms |
Power factor correction (PF) must be greater than 0.90 at full load.
The power supply must meet inrush current requirements under various AC conditions (turn on, single cycle dropout, repetitive cycling) and across the specified temperature range. Peak inrush current must be within the ratings of critical components.
2. DC Output
2.1 DC Voltage Regulation
| Parameter | Range | Min | Nom. | Max | Unit |
|---|---|---|---|---|---|
| +3.3V | +/-3% | +3.20 | +3.30 | +3.39 | Volts |
| +5V | +/-3% | +4.85 | +5.00 | +5.15 | Volts |
| +12V | +/-3% | +11.64 | +12.00 | +12.36 | Volts |
| -12V | +/-10% | -13.2 | -12.00 | -10.8 | Volts |
| +5VSB | +/-5% | +4.75 | +5.00 | +5.25 | Volts |
Note: Voltage tolerance is required at the main connector and S-ATA connector.
2.2 Load Ranges
2.2.1: ST1000-PT Load Range
| Parameter | Min(optional) | Nom. | Max | Peak | Unit |
|---|---|---|---|---|---|
| +3.3V | 0.1 | - | 25 | Amps | |
| +5V | 0.2 | - | 22 | Amps | |
| +12V | 0.15 | - | 83 | Amps | |
| -12V | 0 | - | 0.3 | Amps | |
| +5VSB | 0 | - | 2.5 | Amps |
Notes: 1. Maximum continuous total DC output power should not exceed 1000W. 2. Maximum continuous combined load on +3.3V and +5V outputs shall not exceed 120W. 3. Maximum combined current for the +12V outputs shall be 83A (996W). 4. Peak DC output power should not exceed 1050W for 12 seconds.
2.2.2: ST1200-PT Load Range
| Parameter | Min(optional) | Nom. | Max | Peak | Unit |
|---|---|---|---|---|---|
| +3.3V | 0.1 | - | 25 | Amps | |
| +5V | 0.2 | - | 22 | Amps | |
| +12V | 0.15 | - | 100 | Amps | |
| -12V | 0 | - | 0.3 | Amps | |
| +5VSB | 0 | - | 2.5 | Amps |
Notes: 1. Maximum continuous total DC output power should not exceed 1200W. 2. Maximum continuous combined load on +3.3V and +5V outputs shall not exceed 120W. 3. Maximum combined current for the +12V outputs shall be 100A (1200W). 4. Peak DC output power should not exceed 1250W for 12 seconds.
2.3 Output Ripple
2.3.1 Ripple Regulation
| Parameter | Ripple&Noise | Unit |
|---|---|---|
| +3.3V | 50 | mVp-p |
| +5V | 50 | mVp-p |
| +12V | 120 | mVp-p |
| -12V | 120 | mVp-p |
| +5VSB | 50 | mVp-p |
2.3.2 Definition
Ripple voltage of the outputs is measured at the pins of the output connector when terminated in the load impedance specified in Figure 1. Ripple and noise are measured at the connectors with a 0.1µF ceramic capacitor and a 10µF electrolytic capacitor to simulate system loading. Ripple shall be measured under any condition of line voltage, output load, line frequency, and operation temperature.
2.3.3 Ripple Voltage Test Circuit
A schematic diagram illustrates the ripple voltage test circuit. It shows a power supply unit connected to a load. The output voltage (Vout) and return (V return) are measured using a scope. A parallel combination of a 0.1µF ceramic capacitor and a 10µF electrolytic capacitor is placed across the output to simulate system loading.
2.4 Overshoot
Any overshoot at turn on or turn off shall be less than 10% of the nominal voltage value. All outputs shall be within the regulation limit of section 2.0 before issuing the power good signal of section 5.0.
2.5 Efficiency
Power supply efficiency is typically 90% at 20% Load, 92% at 50% Load, and 89% at 100% Load at normal AC main voltage.
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.
3. Protection
3.1 Over Current Protection
The power supply features current limiting to prevent +3.3V, +5V, and +12V outputs from exceeding specified values. If current limits are exceeded, the power supply will shut down and latch off.
ST1000-PT Over Current Limit (Iout limit)
| Voltage | Over Current Limit (Iout limit) |
|---|---|
| +12V | 90A minimum; 130A maximum |
| +5V | 25A minimum; 50A maximum |
| +3.3V | 25A minimum; 50A maximum |
ST1200-PT Over Current Limit (Iout limit)
| Voltage | Over Current Limit (Iout limit) |
|---|---|
| +12V | 120A minimum; 150A maximum |
| +5V | 25A minimum; 50A maximum |
| +3.3V | 25A minimum; 50A maximum |
3.2 Over Temperature Protection (OTP)
The power supply is protected against over-temperature conditions caused by fan cooling loss or excessive ambient temperature. In an OTP condition, the PSU will shut down. Power is automatically restored when the temperature drops within specified limits. The OTP circuit includes hysteresis to prevent oscillation.
3.3 Over-Power Protection
The power supply will shut down and latch off when the output power is between 105% and 150% of the rated DC output. The unit can operate at low voltage with full load without damage.
3.4 Under Voltage Protection
In case of an under-voltage fault, the supply will latch all DC outputs into a shutdown state if +12V, +5V, & +3.3V outputs fall below 85% of their maximum values.
3.5 Over Voltage Protection
The over-voltage sense circuitry and reference are separate from the regulator control circuitry. No single point fault can cause a sustained over-voltage condition on any output. The supply provides latch-mode over-voltage protection.
| Output | Minimum | Nominal | Maximum | Unit |
|---|---|---|---|---|
| +12 VDC | 13 | 15 | 17 | Volts |
| +5 VDC | 5.5 | 6 | 7 | Volts |
| +3.3 VDC | 3.6 | 4 | 5 | Volts |
3.6 Short Circuit
A short circuit is defined as any output impedance less than 0.1 ohms. The power supply will shut down and latch off if the +3.3 VDC, +5 VDC, or +12 VDC rails are shorted to return or any other rail. Shorts between main output rails and +5VSB will not cause damage. The power supply will shut down, latch off, or fold back for negative rail shorts. The +5VSB rail can be shorted indefinitely and will recover automatically or by cycling PS_ON#. The power supply can withstand a continuous short-circuit without damage.
3.7 No Load Operation
No damage or hazardous condition will occur with all DC output connectors disconnected from the load. The power supply may latch into the shutdown state.
4. Timing
4.1 Signal Timing Drawing
Figure 2 provides a reference for signal timing for main power connector signals and rails.
Figure 2: PS-OK Timing Sequence
Key timing parameters are defined as:
- T3: Power good signal turn on delay time (100ms~500ms)
- T4: Power good signal turn off delay time (75%Load 1ms min)
- T2: Rise time (0.1~20ms)
- T6: Hold up time (75%Load 16ms)
4.2 Hold Up Time
When the power loses its input power, it shall maintain 16ms in regulation limit at normal input voltage and 75% full load (AC:115V/60Hz or 230V/50Hz).
5. Environment
5.1 Operation
| Parameter | Value |
|---|---|
| Temperature | 0 to 40°C |
| Relative Humidity | 10 to 90%, non-condensing |
5.2 Shipping and Storage
| Parameter | Value |
|---|---|
| Temperature | -20 to 90°C |
| Relative Humidity | 5 to 95%, non-condensing |
5.3 Altitude
| Condition | Max Altitude |
|---|---|
| Operating | 10,000FT |
| Storage | 50,000FT |
6. Safety
6.1 Underwriters Laboratory (UL) Recognition
The power supply is designed to meet UL 60950.
7. Electromagnetic Compatibility (EMC)
The power supply complies with the following standards:
- ELECTROSTATIC DISCHARGE (ESD) - IEC 61000 – 4 - 2:2008
- ELECTRICAL FAST TRANSIENT / BURST (EFT/B) – IEC 61000 – 4 - 4:2012
- SURGE – IEC 61000-4-5:2005
- POWER FREQUENCY MAGNETIC FIELD – IEC 61000-4-8:2009
- VOLTAGE DIPS – IEC 61000-4-11:2004
- RADIATED SUSCEPTIBILTY – IEC 61000-4-3:2006+A1:2007+A2:2010
- CONDUCTED SUSCEPTIBILTY – IEC 61000-4-6:2008
- VOLTAGE FLUCTUATION - EN 61000 – 3-3:2008
- EN61000-3-2:2006+A2:2009 harmonic current emissions.
For sales in Europe, the power supply shall meet EN 61000-3-2 Class D and the Guidelines for the Suppression of Harmonics in Appliances and General Use Equipment Class D for harmonic line current content at full-rated power.
8. MTBF
8.1 MTBF (Mean Time Between Failures) Calculation
The demonstrated MTBF is 100,000 hours of continuous operation at 25°C, 80% load, and nominal line. The MTBF is calculated in accordance with MIL-HDBK-217F. The DC FAN is not included.
9. Mechanical Specification
Dimensions: 150 mm (Width) × 86 mm (Height) × 180mm (Depth).
