Introduction
The SilverStone SX600-G represents a new milestone in SFX form factor power supplies. It offers intelligent semi-fanless operation, high efficiency with 80 PLUS Gold certification, and 100% modular cables with flexible flat arrays. This unit provides 600W continuous power output at 40°C, rated for 24/7 operation, featuring a class-leading single +12V rail with 50A, strict ±3% voltage regulation, low ripple & noise, support for dual PCI-E 8/6pin connectors, and Active PFC.
This specification document details the requirements and characteristics of the SX600-G 600W Switching Power Supply.
For installation and system optimization guides, please refer to the SilverStone website: http://www.silverstonetek.com
1. AC INPUT
1.1 AC Input Requirements
The input voltage, current, and frequency requirements for continuous operation are stated below:
| Parameter | Min | Nom. | Max. | Unit |
|---|---|---|---|---|
| Vin | 90 | 100 - 240 | 264 | VACrms |
| Vin Frequency | 47 | 60 - 50 | 63 | Hz |
| Iin | 9 | - | 4.5 | A |
Power factor correction (PF) > 0.90 at full load.
1.2 Inrush Current Regulation
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 (Top). 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
2.1 DC Voltage Regulation
| Parameter | Range | Min | Nom. | Max | Unit |
|---|---|---|---|---|---|
| +3.3V | ±3% | +3.2 | +3.3 | +3.4 | Volts |
| +5V | ±3% | +4.85 | +5.0 | +5.15 | Volts |
| +12V | ±3% | +11.64 | +12.0 | +12.36 | Volts |
| -12V | ±10% | -10.8 | -12.0 | -13.2 | Volts |
| +5VSb | ±5% | +4.75 | +5.0 | +5.25 | Volts |
Note: At no load, 3.3V output +/-5% regulation limits do not apply.
2.2 Load Range
| Parameter | Min | Nom. | Max | Peak | Unit |
|---|---|---|---|---|---|
| +3.3V | 0 | - | 20 | - | Amps |
| +5V | 0 | - | 15 | - | Amps |
| +12V | 0 | - | 50 | - | Amps |
| -12V | 0 | - | 0.3 | - | Amps |
| +5VSb | 0 | - | 2.5 | - | Amps |
- The maximum combined load on +5V and +3.3V outputs shall not exceed 90W.
- The maximum combined load on +12V outputs shall not exceed 600W (50A).
- The maximum continuous average DC outputs power shall not exceed 600W.
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
The ripple voltage of the outputs shall be 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 0.1uF ceramic capacitor and a 10uF 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
Figure 1 illustrates the ripple voltage test circuit. It involves a power supply connected to a load, with measurement points for Vout and Vreturn. The circuit includes a 10uF and a 0.1uF capacitor, and a scope for measurement. The power supply has AC Hot, AC Neutral, and AC Ground inputs.
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:
- 87% at 20% Loading
- 90% at 50% Loading
- 87% at 100% Loading
Measured at normal AC main voltage.
2.6 Remote On/Off Control
When the logic level "PS-ON" is low, the DC outputs are to be enabled. When the logic level is high or open collector, the DC outputs are to be disabled.
3. PROTECTION
3.1 Over-Power Protection
The power supply will shut down and latch off when output power exceeds 110% ~ 160% of rated DC output.
3.2 Over Current Protection
The power supply shall have current limits to prevent the +3.3V, +5V, and +12V outputs from exceeding the values shown in the following table. If the current limits are exceeded, the power supply shall shut down and latch off.
| Voltage | Over Current Limit (Iout limit) |
|---|---|
| +12V | 55A minimum; 75A maximum |
| +5V | 17A minimum; 45A maximum |
| +3.3V | 22A minimum; 45A maximum |
3.3 Over Voltage Protection
The over voltage sense circuitry and reference shall reside in packages that are separate and distinct from the regulator control circuitry and reference. No single point fault shall be able to cause a sustained over voltage condition on any or all outputs. The supply shall provide latch-mode over voltage protection as defined in the table:
| Output | Minimum | Nominal | Maximum | Unit |
|---|---|---|---|---|
| +12 VDC | 13.4 | 15.0 | 16.5 | Volts |
| +5 VDC | 5.74 | 6.3 | 7.0 | Volts |
| +3.3 VDC | 3.76 | 4.2 | 5.1 | Volts |
3.4 Short Circuit
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 +3.3 VDC, +5 VDC, or +12 VDC 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.
3.5 No Load Operation
No damage or hazardous condition should occur with all the 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
The timing diagram illustrates the sequence of signals like VAC, PS-ON, +12V/+5V/+3.3V/O/P, and PW-OK. Key timing points include:
- T1: (Indicates a general time interval)
- T2: Rise time (0.2ms~20ms)
- T3: Power good signal turn on delay time (100ms~500ms)
- T4: Power good signal turn off delay time (1ms min)
- T5: Rise time (10ms max)
- T6: (Indicates a general time interval)
- PW-OK Sense level = 95% of nominal
4.2 Output Transient Response
Table 13 summarizes the expected output transient step sizes for each output. The transient load slew rate is =1.0A/us.
| Output | Max. step size (% of rated output amps per Sec 3.2.3)(1) | Max. step size (amps) |
|---|---|---|
| +12 VDC | 40% | - |
| +5 VDC | 30% | - |
| +3.3 VDC | 30% | - |
| -12 VDC | - | 0.1A |
| +5 VSB | - | 0.5A |
(1) For example, for a rated +5 VDC output of 18A, the transient step would be 30% x 18A = 5.4A. Output voltages should remain within the regulation limits of Section 2.1, and the power supply should remain stable when subjected to load transients per Table 13, from any steady state load, including any or all of the following conditions:
- Simultaneous load steps on the +12 VDC, +5 VDC, and +3.3 VDC outputs (all steps occurring in the same direction)
- Load-changing repetition rate of 50 Hz to 10 kHz
- AC input range per Section 1.0
4.3 Hold Up Time
When the power loss its input power, it shall maintain 12ms at 75% load in regulation limit at nominal input voltage (AC: 115V/60Hz or 230V/50Hz).
4.4 Test Conditions
| Test | Start Voltage [Vac] | End Voltage [Vac] | Duration [cycles / ms] | Load | Frequency [Hz] |
|---|---|---|---|---|---|
| 1 | 230 | 0 | 0.5 / 10ms | 75% Load | 50 |
| 3 | 100 | 0 | 0.5 / 8.33ms | 75%Load | 60 |
5. ENVIRONMENT
5.1 Operation
| Parameter | Value |
|---|---|
| Temperature | 0 to 40 °C |
| Relative Humidity | to 85%, non-condensing |
5.2 Shipping and Storage
| Parameter | Value |
|---|---|
| Temperature | -20 to 60 °C |
| Relative Humidity | to 95%, non-condensing |
5.3 Altitude
| Condition | Maximum Altitude |
|---|---|
| Operating | 10,000FT max. |
| Storage | 50,000FT max. |
6. SAFETY
6.1 Underwriters Laboratory (UL) recognition. The power supply is designed to meet UL 1950.
6.2 The power supply must bear the German Bauart Mark from TUV.
7. ELECTROMAGNETIC COMPATIBILITY (EMC)
- 7.1 ELECTROSTATIC DISCHARGE (ESD) - EN 61000 – 4 - 2:2008
- 7.2 ELECTRICAL FAST TRANSIENT / BURST (EFT/B) – EN 61000 – 4 - 4:2010
- 7.3 SURGE – EN 61000-4-5:2005
- 7.4 POWER FREQUENCY MAGNETIC FIELD – EN 61000-4-8:2009
- 7.5 VOLTAGE DIPS – RN 61000 – 4 - 11:2004
- 7.6 RADIATED SUSCEPTIBILTY – EN 61000 −4−3:2006
- 7.7 CONDUCTED SUSCEPTIBILTY – EN 61000-4-6:2008
- 7.8 VOLTAGE FLUCTUATION - EN 61000-3-3:2008
- 7.9 EN61000-3-2 harmonic current emissions. If applicable to sales in Europe, the power supply shall meet the requirements of 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.
- 7.10 EN55022 Class B Radio interference (CISPR 22).
- 7.11 FCC Part 15, Subpart J class B 115VAC operation.
8. MTBF
8.1 MTBF (Mean Time Between Failures) Calculation
The demonstrated MTBF shall be 100,000 hours of continuous operation at 25°C of full load and 120V AC input. The MTBF of the power supply shall be calculated in accordance with MIL-HDBK-217F. The DC FAN is not included.
9. MECHANICAL
Dimensions: 125 mm (W) x 63.5 mm (H) x 100 mm (D)
