MCOTS-C-48-12-SM
Single Output
Sixteenth-brick
M
ILITARY
COTS DC-DC C
ONVERTER
34-75V
Continuous Input
34-100V
Transient Input
12V
Output
4A
Output
85% @ 2A / 87% @ 4A
Efficiency
Full Power Operation: -55°C to +100°C
The MilQor series of Mil-COTS DC-DC converters brings
SynQor’s field proven high-efficiency synchronous
rectification technology to the Military/Aerospace
industry. SynQor’s ruggedized encased packaging
approach ensures survivability in demanding
environments. Compatible with the industry standard
format, these converters operate at a fixed frequency,
and follow conservative component derating guidelines.
They are designed and manufactured to comply with a
wide range of military standards.
Safety Features
• 2250V, 30 MΩ input-to-output isolation
• Certified 60950-1 requirement for basic insulation
(see Standards and Qualifications page)
Designed and Manufactured in the USA
Mil-COTS
M
N-
M-
-S R
12 TE A
8-
-4 ER .0
-C NV @ 4
S O
OT C C
OUT
MC C-D 12V
D V
IN
28
Operational Features
•
•
•
•
High efficiency, 87% at full rated load current
Operating input voltage range: 34-75V
Fixed frequency switching provides predictable EMI
No minimum load requirement
Mechanical Features
Industry standard sixteenth-brick pin-out
configuration
•
Size:
1.04" x 1.44" x 0.50"
(26.3 x 36.5 x 12.7 mm)
• Total weight: 1.14oz (32.3g)
•
Flanged baseplate version available
•
Protection Features
•
•
•
•
•
Input under-voltage lockout
Output current limit and short circuit protection
Active back bias limit
Output over-voltage protection
Thermal shutdown
Control Features
•
On/Off control referenced to input return
•
Remote sense for the output voltage
• Output voltage trim range of +10%, -10%
Screening/Qualification
•
•
•
•
AS9100 and ISO 9001:2008 certified facility
Qualification consistent with MIL-STD-883
Available with S-Grade or M-Grade screening
Temperature cycling per MIL-STD-883, Method 1010,
Condition B, 10 cycles
•
Burn-In at 100C baseplate temperature
• Final visual inspection per MIL-STD-2008
•
Full component traceability
Doc.# 005-0005322 Rev. G
12/06/2013
Page 1
Specification Compliance
• MIL-HDBK-704 (A-F)
• RTCA/DO-160E Section 16
• MIL-STD-1275 (B,D)
• DEF-STAN 61-5 (Part 6)/(5 or 6)
• MIL-STD-461 (C, D, E)
• RTCA/DO-160E Section 22
Product # MCOTS-C-48-12-SM
MCOTS series converters (with an MCOTS filter) are designed to meet:
Phone 1-888-567-9596
www.synqor.com
MCOTS-C-48-12-SM
Output:
12V
Current:
4.0A
Technical Specification
BLOCK DIAGRAM
GATE
CONTROL
POSITIVE
INPUT
GATE
DRIVER
POSITIVE
OUTPUT
OUTPUT
RETUN
INPUT
RETURN
CURRENT
SENSE
GATE
DRIVER
ISOLATION BARRIER
GATE
CONTROL
CURRENT
LIMT
UVLO
PRIMARY
CONTROL
SECONDARY
CONTROL
+ SENSE
TRIM
- SENSE
ON/OFF
TYPICAL CONNECTION DIAGRAM
V
in(+)
External
Input
Filter
Electrolytic
Capacitor
V
out(+)
V
sense(+)
R
trim-up
or
V
in
ON/OFF
Trim
V
sense( )
_
R
trim-down
C
load
I
load
V
in(
_
)
V
out(
_
)
Product # MCOTS-C-48-12-SM
Product # MCOTS-C-48-12-SM
Phone 1-888-567-9596
Phone 1-888-567-9596
www.synqor.com
www.synqor.com
Doc.# 005-0005322 G
12/06/2013
Doc.# 005-0005322 Rev. Rev. G 12/06/13
Page
Page 2 2
MCOTS-C-48-12-SM
Output:
12V
Current:
4.0A
Technical Specification
MCOTS-C-48-12-SM ELECTRICAL CHARACTERISTICS
Tb = 25 °C, Vin = 48Vdc unless otherwise noted; full operating temperature range is -55 °C to +100 °C baseplate temperature with appropriate power
derating. Specifications subject to change without notice.
Parameter
Min.
Typ.
Max.
100
75
100
2250
2250
2250
100
135
8
75
33.8
32.2
Units
V
V
V
V dc
V dc
V dc
°C
°C
V
V
V
V
V
µF
µH\µF
A
mA
mA
V
mA
A
V
%
%
mV
V
mV
mV
A
A
A
mA
µF
mV
µs
%
%
V
Notes & Conditions
Continuous
Continuous
100 ms
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Non-Operating
-1
Operating
Operating Transient Protection
Isolation Voltage
Input to Output
Input to Base-Plate
Output to Base-Plate
Operating Temperature
-55
Storage Temperature
-65
Voltage at ON/OFF input pin
-2
INPUT CHARACTERISTICS
Operating Input Voltage Range
34
48
Input Under-Voltage Lockout
Turn-On Voltage Threshold
31.2
32.5
Turn-Off Voltage Threshold
28.9
30.5
Lockout Voltage Hysteresis
2.0
Recommended External Input Capacitance
100
Input Filter Component Values (L\C)
1.0\2.35
Maximum Input Current
No-Load Input Current
60
Disabled Input Current
10
Response to Input Transient
0.09
Input Terminal Ripple Current
45
Recommended Input Fuse
OUTPUT CHARACTERISTICS
Output Voltage Set Point
11.88
12
Output Voltage Regulation
Over Line
±0.1
Over Load
±0.1
Over Temperature
-180
Total Output Voltage Range
11.7
Output Voltage Ripple and Noise
Peak-to-Peak
0
50
RMS
10
Operating Output Current Range
0
Output DC Current-Limit Inception
4.4
4.9
Back-Drive Current Limit while Enabled
2.5
Back-Drive Current Limit while Disabled
2
Maximum Output Capacitance
Output Voltage during Load Current Transient
Step Change in Output Current (0.1 A/µs)
200
Settling Time
150
Output Voltage Trim Range
-10
Output Voltage Remote Sense Range
Output Over-Voltage Protection
14.3
15.0
EFFICIENCY
100% Load
87
50% Load
85
Note 1: Output is terminated with 1 µF ceramic and 22 µF low-ESR tantalum
noise, consult SynQor applications support (e-mail: mqnbofae@synqor.com)
Note 2: Recommended minimum output capacitance is 100 µF
Baseplate temperature
2.3
80
14
Typical ESR 0.1-0.2 Ω
Internal values; see Figure E
Vin min; trim up; in current limit
20
12.12
±0.3
±0.3
180
12.3
100
20
4
5.2
1000 V/ms; see Figure 6
RMS
Fast acting external fuse recommended
Over sample, line, load, temperature & life
20 MHz bandwidth; see Note 1
Full load
Full load
Subject to thermal derating
Negative current drawn from output
Negative current drawn from output
Vout nominal at full load (resistive); See Note 2
50% to 75% to 50% Iout max
To within 1% Vout nom
Across Pins 8&4; Figure C; See Note 3
Across Pins 8&4
Over full temp range
3000
10
10
16.2
%
See Figure 1 for efficiency curve
%
See Figure 1 for efficiency curve
capacitors. For applications requiring reduced output voltage ripple and
Note 3: Trim-up range is limited below 10% at low line and full load. Contact SynQor applications support for more detail (e-mail: mqnbofae@synqor.
com)
Product # MCOTS-C-48-12-SM
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005322 Rev. G
12/06/2013
Page 3
MCOTS-C-48-12-SM
Output:
12V
Current:
4.0A
Technical Specification
MCOTS-C-48-12-SM ELECTRICAL CHARACTERISTICS
Tb = 25 °C, Vin = 48Vdc unless otherwise noted; full operating temperature range is -55 °C to +100 °C baseplate temperature with appropriate power
derating. Specifications subject to change without notice.
Parameter
Min.
Typ.
Max.
Units
ms
ms
ms
%
Notes & Conditions
Full load, Vout=90% nom.
Figure F; See Note 1
Figure F
Maximum Output Capacitance
See Absolute Maximum Ratings
DYNAMIC CHARACTERISTICS
Turn-On Transient
Turn-On Time
35
Start-Up Inhibit Time
180
200
250
Power-up Inhibit Time
2
Output Voltage Overshoot
0
ISOLATION CHARACTERISTICS
Isolation Voltage (dielectric strength)
Isolation Resistance
30
Isolation Capacitance (input to output)
1000
TEMPERATURE LIMITS FOR POWER DERATING CURVES
Semiconductor Junction Temperature
125
Board Temperature
125
Transformer Temperature
125
Maximum Baseplate Temperature, Tb
100
FEATURE CHARACTERISTICS
Switching Frequency
350
ON/OFF Control
Off-State Voltage
2.4
8
On-State Voltage
-2
0.8
ON/OFF Control
Pull-Up Voltage
5
Pull-Up Resistance
10
Over-Temperature Shutdown OTP Trip Point
125
Over-Temperature Shutdown Restart Hysteresis
10
RELIABILITY CHARACTERISTICS
Calculated MTBF per MIL-HDBK-217F
11.7
Calculated MTBF per MIL-HDBK-217F
2.7
Note 1: Maximum value is 400ms for DC current limit and short circuit fault conditions
Note 2: Higher values of isolation capacitance can be added external to the module
MΩ
pF
°C
°C
°C
°C
kHz
V
See Note 2
Package rated to 150 °C
UL rated max operating temp 130 °C
Application notes Figures A & B
V
kΩ
°C
°C
10
6
Hrs.
10
6
Hrs.
Average PCB Temperature
Ground Benign, 70°C Tb
Ground Mobile, 70°C Tb
STANDARDS COMPLIANCE
Parameter
Notes & Conditions
STANDARDS COMPLIANCE
UL 60950-1/R:2011-12
Basic Insulation
CAN/CSA-C22.2 No. 60950-1/A1:2011
EN60950-1/A12:2011
Note: An external input fuse must always be used to meet these safety requirements. Contact SynQor for official safety certificates on new releases or
download from the SynQor website.
Product # MCOTS-C-48-12-SM
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005322 Rev. G
12/06/2013
Page 4
MCOTS-C-48-12-SM
Output:
12V
Current:
4.0A
Technical Specification
95
90
85
100
95
90
Efficiency (%)
Efficiency (%)
80
75
70
34 Vin
85
80
75
70
65
60
-55ºC
34 Vin
48 Vin
75 Vin
65
60
0
1
48 Vin
75 Vin
Load Current (A)
2
3
4
25ºC
100ºC
Case Temperature (ºC)
Figure 1:
Efficiency at nominal output voltage vs. load current for
minimum, nominal, and maximum input voltage at 25
°
C.
9
8
Figure 2:
Efficiency at nominal output voltage and 60% rated power vs.
case temperature for minimum, nominal, and maximum input voltage.
10
9
8
Power Dissipation (W)
7
Power Dissipation (W)
6
5
4
3
2
1
0
0
1
34 Vin
48 Vin
75 Vin
7
6
5
4
3
2
1
0
-55ºC
25ºC
34 Vin
48 Vin
75 Vin
Load Current (A)
2
3
4
100ºC
Case Temperature (ºC)
Figure 3:
Power dissipation at nominal output voltage vs. load current for
minimum, nominal, and maximum input voltage at T =25
°
C.
CASE
Figure 4:
Power dissipation at nominal output voltage and 60% rated
power vs. case temperature for minimum, nominal, and maximum input
voltage.
120
4.5
4.0
3.5
3.0
100
Output Voltage (%)
80
Iout (A)
2.5
2.0
1.5
1.0
0.5
0.0
50
60
70
80
90
100
110
60
40
16 Vin
28 Vin
40 Vin
20
0
0
10
20
30
40
50
Base Plate Temperature (°C)
Load Current (%)
60
70
80
90
100 110 120 130 140 150
Figure 5:
Maximum output current vs. base plate temperature (nominal input
voltage).
Product # MCOTS-C-48-12-SM
Phone 1-888-567-9596
Figure 6:
Output voltage vs. load current showing typical current limit
curves. See Current Limit section in the Application Notes.
Doc.# 005-0005322 Rev. G
12/06/2013
Page 5
www.synqor.com
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