MCOTS-C-270-12-QT
Single Output
Quarter-brick
M
ILITARY
COTS DC/DC C
ONVERTER
155-425V
Continuous Input
155-475V
Transient Input
12V
Output
13A
Output
87% @ 6.5A / 85% @ 13A
Efficiency
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.
Mil-COTS
M
D CO
C
27 /D TS-
0 C C-
IN C 27
12 ON 0-
V VE 12
O R -Q
U TE T
T @ R -
N
-M
13
A
Designed and Manufactured in the USA
Operational Features
•
•
•
•
High efficiency, 85% at full rated load current
Operating input voltage range: 155-425V
Fixed frequency switching provides predictable EMI
No minimum load requirement
Safety Features
• 4250V dc, 100 MΩ input-to-output isolation
• (see Standards and Qualifications page)
Protection Features
Mechanical Features
• Industry standard quarter-brick pin-out configuration
•
Size:
1.54” x 2.39” x 0.50”
(39.0 x 60.6 x 12.7 mm)
• Total weight: 3.02 oz. (85.7 g)
•
Flanged baseplate version available
•
•
•
•
•
Input under-voltage lockout
Output current limit and short circuit protection
Active back bias limit
Output over-voltage protection
Thermal shutdown
Screening/Qualification
•
•
•
•
•
AS9100 and ISO 9001:2000 certified facility
Qualification consistent with MIL-STD-883
Available with S-Grade or M-Grade screening
Pre-cap inspection per IPC-610, Class III
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
Control Features
•
On/Off control referenced to input return
•
Remote sense for the output voltage
• Output voltage trim range of +10%, -20%
Product # MCOTS-C-270-12-QT
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005357 Rev. B
07/13/11
Page 1
MCOTS-C-270-12-QT
Output:
12V
Current:
13A
Technical Specification
BLOCK DIAGRAM
REGULATION STAGE
ISOLATION STAGE
CURRENT
SENSE
T1
T1
T2
T2
1
POSITIVE
INPUT
8
POSITIVE
OUTPUT
3
INPUT
RETURN
4
OUTPUT
RETURN
GATE DRIVERS
ISOLATION BARRIER
GATE CONTROL
UVLO
OVSD
CURRENT
LIMIT
PRIMARY
CONTROL
2
ON/OFF
OPTO-ISOLATION
6
SECONDARY
CONTROL
TRIM
7
+ SENSE
5
DATA COUPLING
−
SENSE
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(
_
)
V
in(
_
)
V
out(
_
)
R
trim-down
C
load
I
load
Product # MCOTS-C-270-12-QT
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005357 Rev. B
07/13/11
Page 2
MCOTS-C-270-12-QT
Output:
12V
Current:
13A
Technical Specification
MCOTS-C-270-12-QT ELECTRICAL CHARACTERISTICS
Tb = 25 °C, Vin = 270Vdc 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.
600
425
475
4250
2300
2300
100
135
18
425
153
143
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
V
A
mA
µF
mV
µs
%
%
%
Notes & Conditions
Continuous
Continuous
1s transient, square wave
Reinforced Insulation
Basic Insulation
Basic Insulation
Baseplate temperature
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Non-Operating
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
155
270
Input Under-Voltage Lockout
Turn-On Voltage Threshold
147
150
Turn-Off Voltage Threshold
137
140
Lockout Voltage Hysteresis
10.0
Recommended External Input Capacitance
3.3
Input Filter Component Values (L\C)
56\0.272
Maximum Input Current
No-Load Input Current
25
Disabled Input Current
5
Response to Input Transient
0.6
Input Terminal Ripple Current
23
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
75
RMS
15
Operating Output Current Range
0
Output DC Current-Limit Inception
14.3
16.25
Output DC Current-Limit Shutdown Voltage
7.2
Back-Drive Current Limit while Enabled
2.1
Back-Drive Current Limit while Disabled
5
Maximum Output Capacitance
Output Voltage during Load Current Transient
Step Change in Output Current (0.1 A/µs)
450
Settling Time
100
Output Voltage Trim Range
-20
Output Voltage Remote Sense Range
Output Over-Voltage Protection
115
125
EFFICIENCY
100% Load
85
50% Load
87
Note 1: Output is terminated with 1 µF ceramic and 15 µF low-ESR tantalum
noise, consult SynQor applications support (e-mail: mqnbofae@synqor.com)
Note 2: Trim-up range is limited below 10% at low line and full load.
475V transient for 1s; see Note 1
1.6
35
10
Typical ESR 8Ω
Internal values; see Figure E
Vin min; trim up; in current limit
3
12.12
±0.3
±0.3
180
12.3
150
30
13
18.2
See Figure 12
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
Output voltage 10% Low
Negative current drawn from output
Negative current drawn from output
Vout nominal at full load (resistive load)
50% to 75% to 50% Iout max
To within 1% Vout nom
Across Pins 8&4; Figure C; see Note 2
Across Pins 8&4
Over full temp range
3000
10
10
137
%
See Figure 1 for efficiency curve
%
See Figure 1 for efficiency curve
capacitors. For applications requiring reduced output voltage ripple and
Product # MCOTS-C-270-12-QT
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005357 Rev. B
07/13/11
Page 3
MCOTS-C-270-12-QT
Output:
12V
Current:
13A
Technical Specification
MCOTS-C-270-12-QT ELECTRICAL CHARACTERISTICS
Tb = 25 °C, Vin = 270Vdc 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
%
V dc
MΩ
pF
°C
°C
°C
°C
kHz
V
Notes & Conditions
Full load, Vout=90% nom.
See Figure F
Maximum Output Capacitance
See Absolute Maximum Ratings
Per EN 60255-5
See Note 1
Package rated to 150 °C
UL rated max operating temp 130 °C
DYNAMIC CHARACTERISTICS
Turn-On Transient
Turn-On Time
42
Start-Up Inhibit Time
180
200
220
Output Voltage Overshoot
0
ISOLATION CHARACTERISTICS
Isolation Voltage (dielectric strength)
4250
Isolation Resistance
100
Isolation Capacitance (input to output)
N/A
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
485
550
615
ON/OFF Control
Off-State Voltage
2.4
18
On-State Voltage
-1
0.8
ON/OFF Control
Pull-Up Voltage
5
Pull-Up Resistance
68.1
Over-Temperature Shutdown OTP Trip Point
125
Over-Temperature Shutdown Restart Hysteresis
10
RELIABILITY CHARACTERISTICS
Calculated MTBF per MIL-HDBK-217F
1.3
Calculated MTBF per MIL-HDBK-217F
0.158
Note 1: Higher values of isolation capacitance can be added external to the module.
Isolation stage switching freq. is half this
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
STANDARDS COMPLIANCE
UL 60950-1 2nd Ed, 2007
CAN/CSA-C22.2 No. 60950-1:2007
EN60950-1 Ed 2.0
CE Marked
IEC 61000-4-2
Notes & Conditions
Reinforced Insulation
2006/95/EC Low Voltage Directive
ESD test, 8 kV - NP, 15 kV air - NP (Normal Performance)
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-270-12-QT
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005357 Rev. B
07/13/11
Page 4
MCOTS-C-270-12-QT
Output:
12V
Current:
13A
Technical Specification
95
90
85
95
90
85
Efficiency (%)
Efficiency (%)
80
75
70
65
60
0
1
2
3
4
5
155 Vin
270 Vin
425 Vin
80
75
70
65
60
-55ºC
155 Vin
270 Vin
425 Vin
Load Current (A)
6
7
8
9
10
11
12
13
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.
30
Figure 2:
Efficiency at nominal output voltage and 60% rated power vs.
case temperature for minimum, nominal, and maximum input voltage.
30
25
25
Power Dissipation (W)
Power Dissipation (W)
20
20
15
10
5
0
-55ºC
15
10
155 Vin
155 Vin
270 Vin
425 Vin
5
270 Vin
425 Vin
0
0
1
2
3
4
5
Load Current (A)
6
7
8
9
10
11
12
13
25ºC
100ºC
Case Temperature (ºC)
Figure 3:
Power dissipation at nominal output voltage vs. load current
for minimum, nominal, and maximum input voltage at T
CASE
=25
°
C.
Figure 4:
Power dissipation at nominal output voltage and 60% rated
power vs. case temperature for minimum, nominal, and maximum input
voltage.
14
12
10
8
6
4
2
0
14
12
10
Iout (A)
8
6
4
2
0
50
60
Output Voltage (V)
155 Vin
270 Vin
425 Vin
Base Plate Temperature (°C)
70
80
90
100
110
0
3
6
Load Current (A)
9
12
15
18
Figure 5:
Maximum output current vs. base plate temperature (nominal input
voltage).
Figure 6:
Output voltage vs. load current showing typical current limit
curves. See Current Limit section in the Application Notes.
Product # MCOTS-C-270-12-QT
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005357 Rev. B
07/13/11
Page 5
