SilverStone ST45SF-G User Manual
lssue date: April, 2012
NO. G11215890
ST45SF-G
450W modular cable SFX switching power supply
Support standard SFX form factor and ATX via included bracket
80 PLUS Gold level efficiency (87%~90% efficiency at 20%~100% loading)
450W continuous power output at 40 C operating temperature rated for 24/7 operation
O
Class-leading single +12V rail with 37A
Strict ±3% voltage regulation and low ripple & noise
Silent running 80mm fan with 18dBA minimum
Single PCI-E 8pin and dual PCI-E 6pin connectors support
100% modular cables
SPECIFICATION
SFX Form Factor
2. DC OUTPUT
2.1 DC voltage regulation
SFX Form Factor
ST45SF-G
450W Switching Power Supply
Active PFC Circuit
Full Range Input
This specification describes the requirements of 450W with full range voltage,
switching power supply with a SFX form-factor.
1. AC INPUT
1.1 AC input requirements
The input voltage, current, and frequency requirements for continuous operation
are stated below.
Table 1 AC Input Line Requirements
Parameter
Vin
Vin Frequency
Iin
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).
Min
90
47
100
60
7.0
Nom.
240
50
3.5
Max
264
63
Unit
VACrms
Hz
A
Parameter
+3.3V
+5V
+12V
-12V
+5VSb
At no load,3.3V output +/-5% regulation limits do not apply.
2.2 LOAD RANGE
Parameter
+3.3V
+5V
+12V
-12V
+5VSb
(1) The maximum combined load on +3.3V and +5V outputs shall not exceed 90W.
(2) Maximum continuous total DC output power should not exceed 450W.
2.3 Output Ripple
2.3.1 Ripple regulation
Parameter
+3.3V
+5V
+12V
-12V
+5VSb
Range
±3%
±3%
±3%
±10%
±5%
Min
0
0
0
0
0
Ripple&Noise
50
50
120
120
50
Min
+3.20
+4.85
+11.64
-10.8
+4.75
Nom.
-
-
-
-
-
Unit
mVp-p
mVp-p
mVp-p
mVp-p
mVp-p
Nom.
+3.3
+5.0
+12.0
-12.0
+5.0
Max
19
14
37
0.3
2.5
Max
+3.39
+5.15
+12.36
-13.2
+5.25
Peak Unit
Volts
Volts
Volts
Volts
Volts
Amps
Amps
Amps
Amps
Amps
Unit
01
02
Loading...