Silverstone OP750 SST-OP750 User Manual
Product codes
SST-OP750
4
3. DC Output Specification
3.1 Output Current / Loading
The following tables define two power and current rating. The power supply shall meet both static and
dynamic voltage regulation requirements for minimum load condition.
dynamic voltage regulation requirements for minimum load condition.
Single rail for +12V
Output
Voltage
+5V
+3.3V
+12V (Single Rail)
-12V
+5VSB
Max. Load
30A
28A
60A
0.5A
4A
Min. Load
1.0A
0A
3A
0A
0.1A
Max. Combined
180W 60A
Total Output
730W 6W
15W
Table 5 – Output Loads Range 1:
Note 1: Maximum continuous total DC output power should not exceed 750 W.
3.2 DC Voltage Regulation, Ripple and Noise
The power supply output voltages must stay within the following voltage limits when operating at
steady state and dynamic loading conditions. All outputs are measured with reference to the return
remote sense (ReturnS) signal. The +5V,+3.3V, +12V, -12V and +5VSB outputs are measure at the
power supply connectors references to ReturnS. The +5V and +3.3V is measured at its remote sense
signal (+5VS, +3.3VS) located at the signal connector.
steady state and dynamic loading conditions. All outputs are measured with reference to the return
remote sense (ReturnS) signal. The +5V,+3.3V, +12V, -12V and +5VSB outputs are measure at the
power supply connectors references to ReturnS. The +5V and +3.3V is measured at its remote sense
signal (+5VS, +3.3VS) located at the signal connector.
Output Voltage
+5V
+3.3V
+12V
-12V +5VSB
Load Reg.
+/-3%
+/-3%
+/-3%
+/-10% +/-5%
Line
Reg.
±1% ±1% ±1% ±1% ±1%
Ripple & Noise
50mV
50mV 120mV 120mV 50mV
Table 7 – Regulation, ripple and noise
Ripple and Noise shall be measured using the following methods:
a) Measurements made differentially to eliminate common-mode noise
b) Ground lead length of oscilloscope probe shall be
a) Measurements made differentially to eliminate common-mode noise
b) Ground lead length of oscilloscope probe shall be
≤ 0.25 inch.
c) Measurements made where the cable connectors attach to the load.
d) Outputs bypassed at the point of measurement with a parallel combination of
d) Outputs bypassed at the point of measurement with a parallel combination of
10uF tantalum capacitor in parallel with a 0.1uF ceramic capacitors.
e) Oscilloscope bandwidth of 0 Hz to 20MHz.
f) Measurements measured at locations where remote sense wires are connected.
g) Regulation tolerance shall include temperature change, warm up drift and dynamic load
f) Measurements measured at locations where remote sense wires are connected.
g) Regulation tolerance shall include temperature change, warm up drift and dynamic load
3.3 Timing Requirements
These are the timing requirements for the power assembly operation. The output voltages must rise
from 10% to within regulation limits (T
from 10% to within regulation limits (T
vout_rise
) within 5 to 70mS. The +5V, +3.3V and +12V output