SFX Form Factor
SST-SX650-G SST-SX500-G
The standard SFX power supply benchmark
Silent running 92mm fan with 18 dBA minimum
High efficiency with 80 PLUS Gold certification
Strict ±3% voltage regulation and low ripple & noise
Support standard SFX form factor
All Japanese capacitors
Class-leading single +12V rail
100% modular cables
All cables made with flexible flat arrays
SPECIFICATION
SFX Form Factor
SST-SX650-G
SST-SX500-G
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 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 Voltage Variation Range
100-240 Vrms 90 - 264 Vrms
2.2 Input Frequency
Nominal Frequency Frequency Variation Range
50-60Hz 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 Measuring Range
10.0A 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
SX650-G, SX500-G provides an efficiency of 87% at20% load, 90% at50% load, 87% at100% load
under115V/60Hz and 230V/50Hz condition.
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3. Output characteristics
3.1 Normal Operation Output
SX650-G
Output
Voltage
1. +5V
2. +3.3V
3. +12V
5. -12V
6. +5Vsb
●Maximum continuous total DC output power should not exceed 650W.
Load
MIN
0A 22A
0A 22A
0A 54.2A
0A 0.3A
0A 2.5A
Range
MAX
Peak Regulation
±3% 50mV 50mV
±3% 50mV 50mV
±3% 120mV 120mV
±10% 120mV 120mV
±5% 50mV 50mV
Ripple
P-P Max.
Ripple & Noise
P-P Max.
●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 fre
quency oscilloscope. The output terminal shall add a tantalum capacitor of 10uF in
parallel with a ceramic capacitor of 0.1uF.
SX500-G
Output
Voltage
1. +5V
2. +3.3V
3. +12V
5. -12V
Load
MIN
0A 22A
0A 22A
0A 41.7A
0A 0.3A
Range
MAX
Peak Regulation
±3% 50mV 50mV
±3% 50mV 50mV
±3% 120mV 120mV
±10% 120mV 120mV
Ripple
P-P Max.
Ripple & Noise
P-P Max.
6. +5Vsb
●Maximum continuous total DC output power should not exceed 500W.
0A 2.5A
±5% 50mV 50mV
●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 fre
quency oscilloscope. The output terminal shall add a tantalum capacitor of 10uF in
parallel with a ceramic capacitor of 0.1uF.
02
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.
SX650-G
Loading +5V +3.3V
+12V -12V +5Vsb
Pout
20%
50%
100%
SX500-G
Loading +5V +3.3V
20%
50%
100%
2.22A 2.22A 9.07A 0.05A 0.42A
5.55A 5.55A 22.68A 0.13A 1.05A
11.10A 11.10A 45.37A 0.25A 2.09A
+12V -12V +5Vsb
2.12A 2.12A 6.65A 0.05A 0.40A
5.29A 5.29A 16.64A 0.12A 1.00A
10.58A 10.58A 33.27A 0.24A 2.00A
130.0 W
325.0 W
650.0 W
Pout
100.0 W
250.0 W
500.0W
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% 1oad after power off which hold
within para 3.1 under 115V/60Hz and 230V/50Hz condition.
3.6 5VSB
5VSB is requierd 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 form this pin. This power may
be used to operate circuits such as soft power
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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
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.
04
+3.3V 10,000
-12V 350
+5Vsb 10,000
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.
4.2.6 Over Temperature Protection
5. Start Stability
5.1 No Load Start
When power is applied to SX650-G, 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℃ environment.
6. Environments
6.1 Temperature and Humidity
6.1.1 Operating
Temperature 0 to 40 °C
Relative Humidity 20 to 90 %
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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
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.
06
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.
Time Diagram Figure 1
* 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.
07
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) oC 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)
08
NO. G11231700
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