STMG Series Instr Manual Datasheet by Cosel USA, Inc.

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Basic Characteristics Data
Basic Characteristics Data
Model Circuit method
Switching
frequency
[kHz]
(reference)
Input
current
[A]
Inrush
current
protection
PCB/Pattern *3Series/Parailel
operation
Material
Single
sided Double
sided Series
operation Parailel
operation
STMGF15 Flyback converter 445-495 *1-
glass fabric base,epoxy resin
Ye s *2
STMGF30 Forward converter 380-460 *1-
glass fabric base,epoxy resin
Ye s *2
*1 Refer to Specification.
*2
Refer to the Instruction Manual.
*3
MG series with the power supply unit, please refer to the basic characteristics of the MG series data.
STMG-12
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DC-DC Converters PCB Mount Value-added Type
Instruction Manual
5 Assembling and Installation STMG-16
5.1 Installation
5.2 STMGFS15/STMGFW15 Derating Curve
5.3 STMGFS30/STMGFW30 Derating Curve
5.4 Warranty
3Input Voltage/Current Range STMG-15
6 Note to use ±5V output STMG-18
1 Function
2 Wiring Input terminal
1.1 Input Voltage Range
1.2 Overcurrent Protection
1.3 Overvoltage Protection (STMGFS30/STMGFW30)
1.4 Isolation
1.5 Output Voltage Adjustment Range (STMGFS15/STMGFS30)
1.6 Remote ON/OFF
1.7 Output ripple and ripple noise
4.1 Series Operation
4.2 Parallel Operation
7.1 Outline of Options
4 Series/Parallel Operation STMG-15
7 Options STMG-18
STMG-16
STMG-16
STMG-17
STMG-18
STMG-14
STMG-14
STMG-14
STMG-14
STMG-14
STMG-14
STMG-14
STMG-15
STMG-15
STMG-18
STMG-13
STMG-14
STMG-15
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1 Functions
1.1 Input Voltage Range
¡If output voltage value doesn’t fall within specifications, a unit may
not operate in accordance with specifications and/or fail.
1.2 Overcurrent Protection
¡Overcurrent Operation
An overcurrent protection circuit is built-in and activated over
105% of the rated current or above. It prevents the unit from
short circuit and overcurrent for less than 20 seconds. The output
voltage of the power supply will recover automatically if the fault
causing over current is corrected.
When the output voltage drops after OCP works, the power supply
enters a “hiccup mode” where it repeatedly turns on and off at a
certain frequency.
1.3
Overvoltage Protection (STMGFS30/ STMGFW30)
¡Over Voltage Protection (OVP) is built in. When OVP works, out-
put voltage can be recovered by shutting down DC input for at
least one second or by turning off the remote control switch for
one second without shutting down the DC input. The recovery
time varies according to input voltage and input capacitance.
Remarks :
Note that devices inside the power supply may fail when a voltage
greater than the rated output voltage is applied from an external
power supply to the output terminal of the power supply. This
could happen in in-coming inspections that include OVP function
test or when voltage is applied from the load circuit.
1.4 Isolation
¡When you run a Hi-Pot test as receiving inspection, gradually
increase the voltage to start. When you shut down, decrease the
voltage gradually by using a dial. Please avoid a Hi-Pot tester with
a timer because, when the timer is turned ON or OFF, it may gen-
erate a voltage a few times higher than the applied voltage.
1.5
Output Voltage Adjustment (STMGFS15/ STMGFS30)
¡To increase an output voltage, turn a built-in potentiometer clock-
wise. To decrease the output voltage, turn it counterclockwise.
¡We are offering an Option -V, which doesn’t have a built-in poten-
tiometer but instead enables you to adjust the output voltage by
using an external potentiometer (please see 7 Options).
1.6 Remote ON/OFF
¡The remote ON/OFF function is incorporated in the input circuit
and operated with RC(+) and RC(-). If positive logic control is re-
quired, order the power supply with “-R” option.
Table 1.1 Remote ON/OFF Specifications
ON/OFF
logic Between RC(+) and RC(-) Output voltage
Standard Negative L level (0 - 1.2V) or short ON
H level (3 - 12V) or open OFF
Optional
-R Positive L level (0 - 1.2V) or short OFF
H level (3 - 12V) or open ON
¡When RC is at low level, a current of 1mA typ will flow out.
RC(-) terminal is connected to the -VIN internally.
¡A short piece for remote ON/OFF function is installed on CN4
when power supply is shipped from factory.
Please remove the short piece on CN4 to enable remote ON/OFF
function (Option -R does not come with the short piece).
Vcc
IC Relay
Transistor
Opto coupler
RC(+)
RC(-)
RC(+)
RC(-)
RC(+)
RC(-)
RC(+)
RC(-)
Fig1.1 Rc Connection Example
1.7 Output ripple and ripple noise
¡The specified ripple and ripple noise are measured by the method
introduced in Fig 1.2.
+Vout
-Vout
R
C
Load
Coaxial Cable
Oscilloscope
BW : 100MHz
Fig1.2 Method of Measuring Output Ripple and Ripple Noise
DC-DC Converters PCB Mount Value-added
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STMG-14
Noise 2 Wiring Input terminal
¡If the power supply is to be turned ON/OFF directly with a switch,
inductance from the input line will induce a surge voltage several
times that of the input voltage and it may damage the power supply.
Make sure that the surge is absorbed, for example, by connecting
an electrolytic capacitor between the input terminals.
¡If an external filter containing L (inductance) is added to the input
line or a wire from the input source to the STMG series is long, not
only the reflected input noise becomes large, but also the output
of the converter may become unstable. In such case, connecting
Ci to the input terminal is recommended.
¡If you use an aluminum electrolytic capacitor, please pay attention
to the ripple current rating.
Ci
L
-Vin
+Vin
Input
Fig.2.1 Connecting an External Capacitor to the Input Side
¡If a reverse polarity voltage is applied to the input pin, the power
supply will fail.
If there is a possibility that a reverse polarity voltage is applied,
connect a protection circuit externally as described below.
Fuse
Input
+Vin
-Vin
Schottky Barrier
Diode
Fig.2.2 Connecting a Reverse Voltage Protection Circuit
3 Input Voltage/
Current Range
¡If you use a non-regulated power source for input, please check
and make sure that its voltage fluctuation range and ripple voltage
do not exceed the input voltage range shown in specifications.
¡Please select an input power source with enough capacity, taking
into consideration of the start-up current (Ip), which flows when a
DC-DC converter starts up.
Ip
Input Current [A]
Input Voltage [V]
Input Voltage Range
Fig.3.1 Input Current Characteristics
4 Series/Parallel
Operation
4.1 Series Operation
¡You can use the power supplies in series operation by wiring as
shown below. In the case of (a) below, the output current should
be lower than the rated current for each power supply with the
lowest rated current among power supplies that are serially con-
nected. Please make sure that no current exceeding the rated
current flows into a power supply.
(a)
Power
Supply
Power
Supply
+
-
-
+
Load
(b)
Power
Supply
Power
Supply
+
-
-
+
LoadLoad
Fig.4.1 Series Operation
4.2 Parallel Operation
¡Parallel operation is not possible.
¡You can use the power supplies in redundancy operation by wiring
as shown below.
Power
Supply
Power
Supply
I2
I
1
I
3
-
+
+
-
Load
Fig.4.2 Redundancy Operation
¡Even a slight difference in output voltage can affect the balance
between the values of I1 and I2.
Please make sure that the value of I3 does not exceed the rated
current for each power supply.
I3 [ Rated Current Value
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5
Assembling and Installation
5.1 Installation
¡Derating curve varies depending on the mounting direction.
Refer to 5.2 (STMGFS15/STMGFW15) ,Refer to 5.3 (STMGFS15/
STMGFW30).
(A)
Normal mounting
TB1
(Input)
(Input)
(Input)
(Input)
(Input)
TB1
TB1
TB1
TB1
(B)
(D)(E)
(C)
Fig.5.1 Mounting direction
¡Please note that a power supply and chassis will become hot de-
pending on mounting direction or operating condition.
¡In case of metal chassis, keep the distance between d1 for to in-
sulate between lead of component and metal chassis.
If it is less than d1, insert the insulation sheet between power sup-
ply and metal chassis.
d1
d1=4mm min.
Fig.5.2 Mounting Method
5.2 STMGFS15/STMGFW15 Derating Curve
(1) In the case of Convection Cooling
¡If you derate the output current, you can use the unit in the tem-
perature range from -20C to the maximum temperature shown
below.
*Specifications for ripple and ripple noise changese in the shaded
area.
Load factor [%]
Ambient temperature Ta [C]
-200 20 40 670800
0
50
75
100
Natural Convection
Mounting Method A-E
(1) Standard type (No Case cover type)
Load factor [%]
Ambient temperature Ta [C]
-200 20 40 650 800
0
50
75
100
Natural Convection
Mounting Method A-E
(2) Case cover type
Fig.5.3 STMGFS15/STMGFW15 Derating Curve for Convection Cooling
(2) In the case of Forced Air Cooling
¡In case of forced air cooling, please have sufficient ventilation to
keep the temperature of point A in Fig.5.4 at 105C or below.
Please also make sure that the ambient temperature does not ex-
ceed the range shown in Figure 5.5.
*Specifications for ripple and ripple noise changese in the shaded
area.
(A center point of DC-DC
converter case.)
Point A
Fig.5.4 STMGFS15/STMGFW15 Temperature Measuring Point
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Instruction Manual
STMG-16
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Load factor [%]
Ambient temperature Ta [C]
-200 20 40 670800
0
50
100
Forced air
(0.5m3/min)
(1) Standard type (No Case cover type)
Load factor [%]
Ambient temperature Ta [C]
-200 20 40 650 800
0
50
75
100
Forced air
(0.5m3/min)
(2) Case cover type
Fig.5.5 STMGFS15/STMGFW15 Derating Curve for Forced Air Cooling
5.3 STMGFS30/STMGFW30 Derating Curve
(1) In the case of Convection Cooling
¡If you derate the output current, you can use the unit in the tem-
perature range from -20C to the maximum temperature shown
below.
*Specifications for ripple and ripple noise changese in the shaded
area.
Load factor [%]
Ambient temperature Ta [C]
-200 20 40 670800
0
50
75
25
100
E
A
D
B,C
(1) Standard type (No Case cover type)
Load factor [%]
Ambient temperature Ta [C]
-200 20 30
25 35 40 70 8060
0
50
75
25
EA
CB,D
(2) Case cover type
Fig.5.6 STMGFS30/STMGFW30 Derating Curve for Convection Cooling
(2) In the case of Forced Air Cooling
¡In case of forced air cooling, please have sufficient ventilation to
keep the temperature of point A in Fig.5.7 at 110C or below.
Please also make sure that the ambient temperature does not ex-
ceed the range shown in Figure 5.8.
*Specifications for ripple and ripple noise changese in the shaded
area.
(A center point of DC-DC
converter case.)
Point A
Fig.5.7 STMGFS30/STMGFW30 Temperature Measuring Point
Load factor [%]
Ambient temperature Ta [C]
-200 20 40 670800
0
50
100
Forced air
(0.5m3/min)
(1) Standard type (No Case cover type)
Load factor [%]
Ambient temperature Ta [C]
-200 20 30
25 35 40 70 8060
0
50
75
25
EA
CB,D
Forced air
(0.5m3/min)
(2) Case cover type
Fig.5.8 STMGFS30/STMGFW30 Derating Curve for Forced Air Cooling
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5.4 Warranty
Table 5.1 Warranty STMGFS15/STMGFW15 Standard type
(No Case cover type)
Mounting
Method
Cooling
Method
Average ambient
temperature (year)
Warranty
Io[75%
75%<Io[100%
A - E Convection Ta = 50C or less 5years 5years
Ta = 60C5years 3years
A - E Forced air Ta = 60C or less 5years 5years
Ta = 70C3years 3years
Table 5.2 Warranty STMGFS15/STMGFW15 Case cover type
Mounting
Method
Cooling
Method
Average ambient
temperature (year)
Warranty
Io[75%
75%<Io[100%
A - E Convection
Forced air
Ta = 40C or less 5years 5years
Ta = 50C5years 3years
Table 5.3 Warranty STMGFS30/STMGFW30 Standard type
(No Case cover type)
Mounting
Method
Cooling
Method
Average ambient
temperature (year)
Warranty
Io[75%
75%<Io[100%
A Convection Ta = 50C or less 5years 5years
Ta = 60C3years 3years
B, C, D Convection Ta = 30C or less 5years 5years
Ta = 40C5years 3years
E
Convection Ta = 40C or less 5years 5years
Ta = 50C5years 3years
A - E Forced air Ta = 60C or less 5years 5years
Ta = 70C3years 3years
Table 5.4 Warranty STMGFS30/STMGFW30 Case cover type
Mounting
Method
Cooling
Method
Average ambient
temperature (year)
Warranty
Io[75%
75%<Io[100%
AConvection
Forced air
Ta = 30C or less 5years 5years
Ta = 40C5years 3years
B, D Convection
Forced air
Ta = 20C or less 5years 5years
Ta = 30C5years 3years
CConvection
Forced air
Ta = 15C or less 5years 5years
Ta = 25C5years 3years
EConvection
Forced air
Ta = 25C or less 5years 5years
Ta = 35C5years 3years
6
Note to use ±5V output
¡If an output current is 0% to 5% of the rated current, the output is
influenced by the other output load condition.
20% output voltage fluctuation may occer.
To avoid the fluctuation, external bleeding resister is required to
draw sufficient current.
-Vout
R
R
COM
+Vout
-Vin
+Vin
Load 100
%
Load 0-5%
Fig.6.1 Example of decreasing the fluctuation of output voltage.
7
Options
7.1 Outline of Options
*Please inquire us for details of specifications and delivery timing.
*You can combine multiple options. Some options, however, can-
not be combined with other options. Please contact us for details.
¿ -G
¡Option -G models, removed the capacitor located in between input
and output.
¿ -R
¡Option -R models, a reversed logic (positive logic) for remote ON/
OFF function (Refer to 1.6).
¿ -J
¡Option -J models , the INPUT AND OUTPUT terminal block are
changed to connector.
¡Please do not apply more than 2.5A per 1 pin ( STMGFS15/
STMGFW15).
Please do not apply more than 5A per 1 pin ( STMGFS30/
STMGFW30).
¡Ripple, ripple noise, the capacitor located within 150mm from out-
put terminal
It is the value measured by the measuring plate provided 22μF.
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¿ -N1
¡Option -N1 models come with a cover (plastic).
¡Only connector type is available in STMGFS15/STMGFW15
(Option -J).
¿ -N2
¡Option -N2 models come with a dedicated DIN rail attachment.
¿ -N3
¡Option -N3 models come with a cover (plastic) and DIN rail attach-
ment.
¡Only connector type is available in STMGFS15/STMGFW15
(Option -J).
¿ -V (STMGFS15/STMGFS30)
¡Option -V models have connector (CN5) for external potentiom-
eter instead of a built-in potentiometer.
¡The output voltage is adjustable through an external potentiometer
VR. Adjust only within the range of ±10% of the rated voltage.
¡To increase the output voltage, turn the potentiometer clockwise
and connect in such a way that the resistance value between 2
and 3 becomes small.
To decrease the output voltage, turn the potentiometer counter-
clockwise.
STMGFS15/STMGFS30
Reference
Voltage
CN5
VR:External VR
+Vout
-Vout
Load
CN5
Fig.7.1 Connecting External Potentiometer
Table 7.1 List of External Potentiometer
Output Voltage External VR
3.3V, 5V 1 [kW]
12V, 15V 5 [kW]
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