SilverStone Gemini GM500-G Installation And Optimization Manual

GM500-G

GEMINI SERIES

Endless power through redundancy

500+500W 24hour fully continuous power output

PS2 mini redundant power with 150mm(W) x 85mm(H) x 180mm(D)

80 PLUS Gold Certified

Active PFC (full range)

1+1 redundant configuration

Hot swappable design

Convenient pull-out handle bars

Industry-leading reliability

Support PMBus 1.2

The following manual and guides were carefully prepared by the SilverStone engineering team to
help you maximize the potential of your SilverStone product. Please keep this manual for future
reference when upgrading or performing maintenance on your system. A copy of this manual can also
be downloaded from our website at:

Installation and system optimization guide:

Specification

General

AC input specifications

DC output specification

Protection

Environmental requirements

Agency requirements

Redundant power supply function

PMBus

Reliability

Physical characteristics size

P.1

P.1

P.1

P.2

P.5

P.6

P.6

P.7

P.8

P.12

P.12

SPECIFICATION

SilverStone GEMINI

GM500-G

Mini Redundant Switching Power Supply

80 PLUS Gold

PMBus 1.2

500W+500W

01

This is the specification of Model GM500-G; it is intended to describe the functions and performance of the mini
redundant power supply. The GM500-G 500 watts mini redundant power supply is featured with Active PFC
(Power Factor Correction) capability and gold efficiency for 80+ and PMBus function meets IEC61000-3-2 and
equips full range Input features.

The power supply must meets inrush requirements of any rated AC voltage, during turn on at any phase of
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 30/60A @ 115/230 VAC (25℃) per module when cold start
and less than the rating of its critical components (including input fuse, bulk rectifiers, and surge limiting device).

The power supply must operate within all specified limits over the input voltage range in Table 1.Harmonics
distortion of up to 10% THD must not cause the power supply to go out of specified limits.
Base on the minimum voltage and power transfer, the max current calculation as below:

Table 1 – AC Input Voltage and Frequency

Max Current ≧ (Watt / Efficiency) / Minimum Voltage

2.2 AC inrush current

2.1 AC input voltage, frequency and current (Rating: 100V-240 VAC, 47-63Hz, 8-4A)

1. General

2. AC input specifications

Parameter
Voltage (115V)
Voltage (230V)

Frequency

Minimum

90 VAC

180 VAC

47 Hz

Normal
100-120 VAC
200-240 VAC

50 / 60 Hz

Maximum

132 VAC
264 VAC

63 Hz

Max. Current

8A
4A

N/A

02

2.3 Input power factor correction (Active PFC)

The power factor at 50% load shall be ≧ 0.9 at 230V input voltage.

2.4 Input current harmonics

When the power supply is operated in 90-264 VAC of Sec. 2.1, the input harmonic current drawn on the power
line shall not exceed the limits set by IEC61000-3-2 Class A and GB17625.1 standards. The power supply shall
incorporate universal power input with active power factor correction.

2.5 Dropout

An AC line dropout of 17mS or less shall not cause any tripping of control signals or protection circuits. If the
AC dropout lasts longer than 17mS, the power supply should recover and meet all turn on requirements. The
power supply shall meet the regulation requirement over all rated AC voltages, frequencies, and output loading
conditions. Any dropout of the AC line shall not cause damage to the power supply. An AC line dropout is
defined as a drop in AC line to 0 VAC at any phase of the AC line for any length of time.

3.1 Output current / loading

3.2 DC voltage regulation, ripple and noise

The following table defines power and current rating. The power supply shall meet both static and dynamic
voltage regulation requirements for minimum load condition.

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.

Table 2– Output Loads Range 1

Note 1: Maximum continuous total DC output power should not exceed 550W.

3. DC output specification

Output Voltage

Max. Load

Min. Load

Max. Combined

Total Output

+5V
25A

1A

170W

500W

+3.3V

25A

1A

+12V

41A

1A

-

-12V

0.8A
0A

-

+5VSB

3.5A

0.1A

17.5W

Table 3 – Regulation, ripple and noise

Output Voltage

Load Reg.

Line Reg.

Ripple & Noise

+5V
+/-5﹪
+/-1﹪

50mV

+3.3V
+/-5﹪
+/-1﹪

50mV

+12V
+/-5﹪
+/-1﹪

120mV

-12V
+/-5﹪
+/-1﹪

120mV

+5VSB

+/-5﹪
+/-1﹪

50mV

03

These are the timing requirements for the power assembly operation. The output voltages must rise from 10%
to within regulation limits (Tvout_rise) within 5 to 70mS. The +5V, +3.3V and +12V output voltages should start
to rise at about the same time. All outputs must rise monotonically. The +5V output must occur first than the
+3.3V output during any point of the voltage rise. The +5V output must never be greater than the +3.3V output
by more than 2.25V. Each output voltage shall reach regulation within 50 ms (Tvout_on) of each other during
turn on of the power supply. Each output voltage shall fall out of regulation within 400 mS (Tvout_off) of each
other during turn off. Figure 1 and figure 2 shows the turn on and turn off timing requirement. In Figure 2, the
timing is shown with both AC and PSON# controlling the on/off of the power supply.

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 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 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.

3.3 Timing requirements

Table 4 – Output Voltage Timing

Item
Tvout_rise
Tvout_on
Tvout_off

Description
Output voltage rise time from each main output.(+5Vsb < 70mS)
All main output must be within regulation of each other within this time.
All main output must leave regulation within this time

MIN

5
N/A
N/A

MAX

70
50

400

Units

mS
mS
mS

Figure 1:Output Voltage Timing