Switching Power Supply Specifications
Model Name : SI-C145M2
Version :C0-B0
Table of Contents
1. General
1.1 Scope
2. Input Characteristics
2.1 Input Voltage
2.2 Input Frequency
2.3 Max. Input AC Current
2.4 Inrush Current
2.5 Efficiency
3. Output characteristics
3.1 Normal Operation Output
3.2 Remote On/Off controlled mode
3.3 Regulation
3.4 Rise Time
3.5 Hold-up Time
4. Protection
4.1 Input Protection
4.2 Output Protection
5. Start Stability
5.1 No Load Start
5.2 Cold Start
6. Environments
6.1 Temperature and Humidity
6.2 Altitude
6.3 Vibration and Shock
Sirtec Group Electronic Corp.
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Page 1
Switching Power Supply Specifications
Model Name : SI-C145M2
Version :C0-B0
7. Conducted EMI
8. Product Safety
8.1 Safety Requirement
8.2 Leakage Current
8.3 Insulation Resistance
8.4 Dielectric Voltage Withstand
8.5 Certificate and Report
9. Power Good Signal
10. Fan Speed Control
11. MTBF
12. Burn-In
12.1 Input Voltage
12.2 Test Condition
13. Mechanical Specification
13.1 Outline Dimension
13.2 Weight
13.3 Pin Assignment
Sirtec Group Electronic Corp.
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Page 2
Switching Power Supply Specifications
Model Name : SI-C145M2
Version :C0-B0
1. General
1.1 Scope
This specification defines the general design and performance requirements for
SI-C145M2 switching power supply . This model also meet INTEL SPS ATX
2.01 standard request.
2. Input Characteristics
2.1 Input Voltage
Nominal Voltage
Voltage Variation Range
-----------------------------------------------115 Vrms
90 - 132 Vrms
230 Vrms
180 - 264 Vrms
* The power supply is designed to operate in two specified voltage range
depending upon outside manual input voltage switch selected. Unless
specified the SI-C145M2 shall be set at 230Vac.
2.2 Input Frequency
Nominal Frequency
Frequency Variation Range
-----------------------------------------------50/60 Hz
47 Hz to 63 Hz
* Waveform harmonic distortion will be less than 5%.
* The power supply must operate at above frequency with both 90-132/180264 Vrms input voltage range.
2.3 Max. Input AC Current
Max. Input Current
--------------------4.0 A
2.0 A
Sirtec Group Electronic Corp.
Measuring Range
---------------------------90-132 Vrms
180-264 Vrms
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Page 3
Switching Power Supply Specifications
Model Name : SI-C145M2
Version :C0-B0
2.4 Inrush Current
Less then the ratings of it`s cirtical components (Including bulk rectifiers.Fuses
and surge limiting device).
2.5 Efficiency
SI-C145M2 provides an efficiency of 65 % minimum when measured at full
load under 115V/60Hz and 230V/50Hz. condition.
3. Output characteristics
3.1 Normal Operation Output (LABEL SPEC)
Output
Voltage
Load
MIN
Range
MAX
Regulation
Ripple&Noise
Peak-to-Peak
Max.
Ripple Peakto-Peak Max.
1. +5V
1.5A
15.0A
+5% ~ -5%
100 mV
50 mV
2. +12V
0.2A
3.0A
+5% ~ -5%
200 mV
120 mV
3. –12V
0.0A
0.5A
+10% ~ -10%
200 mV
120 mV
4. +5Vs
0.0A
1.5A
+5% ~ -5%
100 mV
50 mV
6. +3.3V
0.3A
12.0A
+5% ~ -5%
100 mV
50 mV
*. +5V & +3.3V combined load should not exceed 100W
NOTE:
1. Noise test should be measured with 20 MHz bandwidth frequency oscilloscope.
The output terminal shall add a tantalum capacitor of 10uF in parallel with a ceramic
capacitor of 0.1uF.
Sirtec Group Electronic Corp.
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Page 4
Switching Power Supply Specifications
Model Name : SI-C145M2
Version :C0-B0
3.2 Remote On/Off Controlled mode
When AC power present, the power supply shall be in save mode operation and
+5V S.B shall within its regulation window. When there comes a TTL "L"
signal inserted, the power supply shall be on. When TTL signal "H" is inserted
the power supply shall be off.
TTL level
"H" 3.0V - 5.5V
"L" 0.0V - 0.8V
3.3 Regulation
The cross regulation defined as follows, the output regulation should be within
the specified range.
Load
SYM
+5V
+3.3V
+12V
-12V
ALL Max.
HHHH
12.0A
12.0A
3.0A
0.5A
ALL Min.
LLLL
1.0A
0.3A
0.2A
0.0A
+5V Middle
others Min
MLLL
10.0A
0.3A
1.0A
0.0A
+5V Middle
others Max.
MHHH
5.0A
12.0A
3.0A
0.5A
3.4 Rise Time
DC output rise time is less than 100 mS at nominal line and full load.
3.5 Hold-up Time
DC +5V output maintains at least 16mS after power off which hold within para
3.1.
Sirtec Group Electronic Corp.
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Page 5
Switching Power Supply Specifications
Model Name : SI-C145M2
Version :C0-B0
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 Over Voltage Protection
The +5V/+12V DC output are protected against the over voltage condition .
Maximum value can't be over 6.8V at 5V terminal and 15.6V at 12V.
4.2.2 Over Power Protection
The power supply can be used electronic circuit to limit the output current
against exceeding 60% of surge output power or protected against excessive
power delivery since short circuit of any output or over total power at nominal
line.
4.2.3 Short Circuit Protection
Short circuit placed on any DC output will shut down all DC outputs and latch.
Sirtec Group Electronic Corp.
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Page 6
Switching Power Supply Specifications
Model Name : SI-C145M2
Version :C0-B0
5. Start Stability
5.1 No Load Start
When power is applied to SI-C145M2 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 after 8 hours storage
in 10oC environment.
6. Environments
6.1 Temperature and Humidity
6.1.1 Operating
Temperature
10 to 50 oC
Relative Humidity 20 to 90 %
6.1.2 Storage
Temperature
-40 to 60 oC
Relative Humidity 20 to 95 % noncondensing
6.2 Altitude
The power supply can operate normally at any altitude between 0 to 8000 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 - 20 Hz
15 minutes
0.38 mm
20 - 250 Hz
15 minutes
0.25G
Sirtec Group Electronic Corp.
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Page 7
Switching Power Supply Specifications
Model Name : SI-C145M2
Version :C0-B0
7. Conducted EMI
The power supply will comply with FCC DOCKET 20780, Part 15 Class B limit
for 115Vac input, FTZ 243 Class B for 230 Vac input and VCCI CLASS 2
requirement.
8. Product Safety
8.1 Safety Requirement
The power supply will be recognized under UL Standard 1950 without D3
deviation, certified with CSA standard C22.2 No.234-M90 safety requirements,
and type approval with IEC publication 950 with A11 amendments.
8.2 Leakage Current
The AC leakage current is less than 3.5mA when the power supply connect to
254Vac/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.
8.5 Certificate and Report
EMC:
CE, FCC DoC, BCIQ
SAFETY: UL, CSA, TUV, Nemko, CB
Sirtec Group Electronic Corp.
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Page 8
Switching Power Supply Specifications
Model Name : SI-C145M2
Version :C0-B0
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
* t1 : Switch on time (1 sec. Max.)
* t2 : Rise time ( 2 mS<t2<20mS .)
* t3 : Power good turn on delay time ( 100 < t3 < 500 mS )
* t4 : Power good turn off delay time ( 1.0 mS Min.)
* t5 : Power hold-on time ( 16 mS Min.)
* Power on-off cycle :
When the power supply is turned off for a minimum of 1.0 sec. and turn on
again, the power good signal will be asserted.
Sirtec Group Electronic Corp.
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Page 9
Switching Power Supply Specifications
Model Name : SI-C145M2
Version :C0-B0
10. Fan Speed Control
Fan control circuit can change its speed turn by the height of internal temperatur
11. MTBF
Failure of power supply shall not exceed 2% per 1000 hours of operation which
translates to a minimum MTBF of 100,000 hours, excludes the life of the fan.
12. Burn-In
12.1 Input Voltage
Applying 220Vac for 230V model, and 110Vac for 115V.
12.2 Test Condition
Applying full loads for the power supply in 45 (+/-5) oC chamber for 8 hours.
13. Mechanical Specification
13.1 Outline Dimension
Please refer the mechanical drawing of SI-C145M2.
13.2 Weight
Maximum weight is 2.0 Kgs.
13.3 Pin Designation :
AC Input : RONG FENG SS-120 OR EQUIVALENT
PA System Board: MOLEX 39-01-2200 or equivalent
20 AWG standard wire 20 pin connector.
PC ,PD and PE:
AMP 1-480424-0 or MOLEX 8981-04P or equivalent
20 AWG standard wire 4 pin connector.
PB:
AMP 171822-4 or equivalent.
20 AWG standard wire 4 pin connector.
Sirtec Group Electronic Corp.
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Page 10
Switching Power Supply Specifications
Model Name : SI-C145M2
Version :C0-B0
13.3.1 Main Output Pin Assignment
PA(System Board)
PIN 1
+3.3Vdc
PIN 2
+3.3Vdc
PIN 3
COMMON
PIN 4
+5Vdc
PIN 5
COMMON
PIN 6
+5Vdc
PIN 7
COMMON
PIN 7
+3.3V NEGATIVE remote sense
PIN 8
POWER GOOD
PIN 9
+5Vs
PIN 10
+12Vdc
PIN 11
+3.3Vdc
PIN 11
+3.3V POSITIVE remote sense
PIN 12
-12Vdc
PIN 13
COMMON
PIN 14
P.S-on
PIN 15
COMMON
PIN 16
COMMON
PIN 17
COMMON
PIN 18
-5Vdc
PIN 19
+5Vdc
PIN 20
+5Vdc
ORANGE
ORANGE
BLACK
RED
BLACK
RED
BLACK
BLACK
GRAY
PURPLE
YELLOW
ORANGE
ORANGE
BLUE
BLACK
GREEN
BLACK
BLACK
BLACK
WHITE
RED
RED
CONNECTOR PA
PIN 20
PIN 11
PIN 1
Sirtec Group Electronic Corp.
PIN 10
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Page 11
Switching Power Supply Specifications
Model Name : SI-C145M2
Version :C0-B0
PC,PE
5.25” DISK DRIVE
PIN
PIN
PIN
PIN
1
2
3
4
+12Vdc
COM
COM
+5Vdc
PD
Daisy
PIN
PIN
PIN
PIN
1
2
3
4
PB
YELLOW
BLACK
BLACK
RED
Chain
+12Vdc
COM
COM
+5Vdc
YELLOW
BLACK
BLACK
RED
(3.5” DISK DRIVE)
PIN
PIN
PIN
PIN
1
2
3
4
Sirtec Group Electronic Corp.
+5Vdc
COM
COM
+12dc
RED
BLACK
BLACK
YELLOW
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Page 12
2
Model Name : SI-C145M2
Version :C0
3
Switching
Specifications
DIM : Power Supply
PA
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
PA: L=300+30M M
- 0M M
PC: L=300+30M M
- 0M M
PD: L=150+30M M
- 0M M
PE: L=300+30M M
- 0M M
B
86.0
80.0
V
16.0
43.0
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
ORANGE
BLACK
RED
BLACK
RED
BLACK
GRAY
PURPLE
YELLOW
ORANGE
BLUE
BLACK
GREEN
BLACK
BLACK
BLACK
+3.3V
COM M ON
+5V
COM M ON
+5V
COM M ON
POW ER GOOD
+5V S
+12V
+3.3V
-12V
COM M ON
P.S-ON
COM M ON
COM M ON
COM M ON
RED
RED
+5V
+5V
PA
COLOR
V
ORANGE +3.3V*SENSE
BLACK
+3.3V*SENSE
PIN
1
2
3
4
COLOR
YELLOW
BLACK
BLACK
RED
PIN
1
2
3
4
22.0
COLOR
V
YELLOW +12V
BLACK GND
BLACK GND
RED
+5V
.5
R1
LABEL
112.5
52.0
100.0
#SELECT
SW ITCH
B
15.0
22.0
120.0
C
5.0
R1
.5
112.5
.5
R1
27.0
C
V
+12V
GND
GND
+5V
PC/PD/PE
43.0
22.0
A
PB
10.5
6.0
10.5
COLOR
Issue Date :Nov,28,1999
1 ORANGE +3.3V
PB: L=150+30M M
- 0M M
A
PIN
PIN
11
7
4
15.0
1
24.0
42.0
80.0
8.0
No.6-32*4
EXTRUDED HOLE
#INLET
QTY REQD
FSCM
NO
PART OR
IDENTIFYING NO
NOM EN CLA TURE
OR DESCRIPTION
M ATERIAL
SPECIFICATION
PARTS LIST
D
U NLESS O TH ERW ISE SPECIFIED
D IM ENSIO NS ARE IN CENTIM ETERS
TOLERAN CES A RE:
x.0 =0.2
x.x =0.15
x.xx=0.1
Sirtec Group Electronic Corp.
FINISH
Page 13
1
2
TITLE
D RA W N
SIRTEC
DANIEL.YANG
CHECK ED
TREA TM ENT
89/02/23
SIM ILAR TO
3
D
CO NTRA CT NO.
SI-C145M 2 REV:C0-B0
APPR0VED:
ITEM
NO
SIZE
A3 REV:
SCALE
1:1
PRT NO .
MM
91.14502.001
C0042
DW G NO.
4
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