Silverstone Strider Gold S Series ST78F 850W PSU User Manual

Silverstone Strider Gold S Series ST78F 850W PSU

About Silverstone

SilverStone Technology is a well-known company in the computer hardware industry that specializes in designing and manufacturing computer components and accessories. They are particularly renowned for their high-quality computer cases, power supplies, cooling solutions, and various other PC peripherals.

SilverStone was founded in 2003 in Taiwan and has since established a solid reputation for producing innovative and aesthetically appealing products. They cater to a wide range of consumers, including PC enthusiasts, gamers, and professionals who seek reliable and high-performance hardware for their computing needs.

SPECIFICATION

This specification describes the requirements of 750W,850Watts switching power supply with a stretch ATX form factor and EPS 12V, +5V standby voltage, remote on/off control, full-range line input capability, and forced air cooling characteristics.

AC INPUT

AC input requirements

Parameter	Min.	Nom.	Max.	Unit
Vin( Full range )	90	100—240	264	VACrms
Vin Frequency	47	60—–50	63	Hz
Iin(750W)		10——-5		Arms
Iin(850W)		11—–5.5		Arms

The input voltage, current, and frequency requirements for continuous operation are stated below.

Table 1 AC Input Line Requirements

Power factor correction (PF)>0.90 at full load.

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).

DC OUTPUT

DC voltage regulation

Parameter	Range	Min	Nom.	Max	Unit
+3.3V	+/-3％	+3.20	+3.30	+3.40	Volts
+5V	+/-3％	+4.85	+5.00	+5.15	Volts
+12V	+/-3％	+11.64	+12.00	+12.36	Volts
-12V	+/-10％	-13.20	-12.00	-10.80	Volts
+5VSB	+/-5％	+4.75	+5.00	+5.25	Volts

Note:

1. The voltage tolerance is required at the main connector and S-ATA connector(if used)
2. Output transient response tested DC voltage regulation range +5V,+12V,+3.3V ±5%

Load ranges

SST-ST75F-GS Load Range

Parameter	Min(optional)	Nom.	Max	Unit
+3.3V	0.5	–	22	Amps
+5V	0.3	–	25	Amps
+12V	1.0	–	62	Amps
-12V	0	–	0.3	Amps
+5VSB	0.1	–	3.5	Amps

• Maximum continuous total DC output power should not exceed 750W.
• Maximum continuous combined load on +3.3VDC and +5VDC outputs shall not exceed 150W.
• The maximum combined current for the +12V outputs shall be 62A(744W).
• When +12V is loaded to 28A, the -12V minimum load is 0.02A.
• Peak total DC output power should not exceed 800W.
•  Peak power can be supported for 12 seconds.

SST-ST85F-GS Load Range

Parameter	Min	Nom.	Max	Unit
+3.3V	0.5	–	22	Amps
+5V	0.3	–	25	Amps
+12V	1	–	70	Amps
-12V	0	–	0.3	Amps
+5VSB	0.1	–	3.5	Amps

• Maximum continuous total DC output power should not exceed 850W.
• Maximum c.ontinuous combined load on +3.3VDC and +5VDC outputs shall not exceed 150W.
• The maximum combined current for the +12V outputs shall be 70A(840W).
• When +12V is loaded to 28A, the -12V minimum load is 0.02A.
• Peak total DC output power should not exceed 900W.
• Peak power can be supported for 12 seconds.

Output Ripple

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

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, or operation temperature.

Ripple voltage test circuit

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.

Efficiency

Power supply efficiency typically 87% for 750W 850W normal voltage at full load on all outputs.

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.

PROTECTION

Over current protection

The power supply shall have a current limit to prevent the +3.3V,+5V, and +12V1,+12V2 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.

SST-ST75F-GS

Voltage	Over Current Limit (Iout limit)
+12V	65A minimum; 95A maximum
+5V	28A minimum; 45A maximum
+3.3V	24A minimum; 40A maximum

SST-ST85F-GS

Voltage	Over Current Limit (Iout limit)
+12V	72A minimum;   105A maximum
+5V	28A minimum;     45A maximum
+3.3V	24A minimum;     40A maximum

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 shut down. When the power supply temperature drops to within specific limits, the power supply shall restore power automatically. The OTP circuit must have built-in hysteresis such that the power supply will not oscillate on and off due to temperature recovery conditions.

Over-power protection The power supply will be shut down and latch off when the output power is within 110~180% of rated DC output.
Note: The assurance machine can work at low voltage, a full load won’t damage the machine.

Under voltage protection In an under-voltage fault occurs, the supply will latch all DC outputs into a shutdown state when +12V,+5V & +3.3V outputs are under 85% of their maximum value.

Overvoltage protection The over-voltage sense circuitry and reference shall reside in packages that are separate and distinct from the regulator control circuity 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 Table.

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

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 the 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.

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.

TIMING

The signal timing drawing is a reference for signal timing for main power connector signals and rails.

PS-OK Timing Sequence

• T3: Power good signal turn-on delay time (100ms~500ms)
• T4: Power good signal turn off delay time (1ms min)
• T2: Rise time (0.1~70ms)
• T6: Hold up time

Hold up time

When the power loses its input power, it shall maintain 17ms in regulation limit at normal input voltage. ( Tested at 75% of maximum load and 100-240VAC input ).

ENVIRONMENT

Operation

Temperature	0 to 40OC
Relative Humidity	10 to 90%, non-condensing

Shipping and Storage

Temperature	-20 to 60OC
Relative Humidity	5 to 95%, non-condensing

Altitude

SAFETY

Underwriters Laboratory (UL) recognition.

The power supply is designed to meet UL 1950.

The power supply must bear the German Bauart Mark from TUV.

ELECTROMAGNETIC COMPATIBILITY (EMC)

• ELECTROSTATIC DISCHARGE (ESD) – EN 61000 – 4 – 2：2008
• ELECTRICAL FAST TRANSIENT / BURST ( EFT/B) – EN 61000 – 4 – 4：2010 7.3 SURGE – EN 61000 – 4 – 5：2005
• POWER FREQUENCY MAGNETIC FIELD – EN 61000 – 4 – 8：2009
• VOLTAGE DIPS – RN 61000 – 4 – 11：2004
• RADIATED SUSCEPTIBILITY – EN 61000 – 4 – 3：2006
• CONDUCTED SUSCEPTIBILITY – EN 61000 – 4 – 6：2008
• VOLTAGE FLUCTUATION – EN 61000 – 3 – 3：2008
• 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.
• EN55022 Class B Radio interference (CISPR 22).
  7.11 FCC Part 15, Subpart J class B 115VAC operation.

MTBF
MTBF (mean time between failures) calculation The demonstrated MTBF shall be 100,000 hours of continuous operation at 25oC, at 80% load, and nominal line. The MTBF of the power supply be calculated in accordance with MIL-HDBK-217F. The DC FAN is not included.

MECHANICAL REQUIREMENTS

Physical Dimension 150 mm (W) × 86 mm (H) × 150mm (D)

Connectors

M/B 24PIN connector

	Signal	Pin	Pin	Signal
Orange	+3.3V	13	1	+3.3V	Orange
Blue	-12VDC	14	2	+3.3V	Orange
Black	COM	15	3	COM	Black
Green	PS-ON	16	4	+5VDC	Red
Black	COM	17	5	COM	Black
Black	COM	18	6	+5VDC	Red
Black	COM	19	7	COM	Black
White	N/C	20	8	PWRGOOD	Grey
Red	+5VDC	21	9	+5Vsb	Purple
Red	+5VDC	22	10	+12V	Yellow
Red	+5VDC	23	11	+12V	Yellow
Black	COM	24	12	+3.3V	Orange

EPS 12V 8PIN connector

	Signal	Pin	Pin	Signal
Yellow	+12V	5	1	COM	Black
Yellow	+12V	6	2	COM	Black
Yellow	+12V	7	3	COM	Black
Yellow	+12V	8	4	COM	Black

ATX 12V 4PIN (4+4PIN EPS 12V in split mode)

	Signal	Pin	Pin	Signal
Black	GND	1	3	+12V	Yellow
Black	GND	2	4	+12V	Yellow

4PIN peripheral connector (HDD)

	Signal	Pin	Pin	Signal
Yellow	+12V	1	1	+5VDC	Red
Black	COM	2	2	COM	Black
Black	COM	3	3	COM	Black
Red	+5VDC	4	4	+12V	Yellow

4PIN floppy connector (FDD)

	Signal	Pin
Orange	+3.3V	5
Black	COM	4
Red	+5V	3
Black	COM	2
Yellow	+12V	1

SATA connector

	Signal	Pin	Pin	Signal
Yellow	+12V	1	5	COM	Black
Yellow	+12V	2	6	COM	Black
Yellow	+12V	3	7	COM	Black
Black sense1	COM	4	8	COM	Black

8PIN PCI Express connector

	Signal	Pin	Pin	Signal
Yellow	+12V	1	4	COM	Black
Yellow	+12V	2	5	COM	Black
Yellow	+12V	3	6	COM	Black

6PIN PCI Express connector

FAQs Silverstone Strider Gold S Series ST78F 850W PSU

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