MCOTS-C-28VE-28-HP
Single Output
Half-brick
9-70V
Continuous Input
M
ILITARY
COTS DC-DC C
ONVERTER
100V
Transient Input
28V
Output
5.8A
Output
Operation: -55°C to +100°C
89% @ 2.9A / 88% @ 5.8A
Efficiency
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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
Mil-COTS
-M
-N
HP
8-
2
E- ER .8A
8V ERT @ 5
-2
-C ONV UT
S
OT C C 28V O
MC C/D
D 8V IN
2
• 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
Operational Features
Mechanical Features
• Industry standard half-brick pin-out configuration
•
Size:
2.49” x 2.39” x 0.51”
(63.1 x 60.6 x 13.0 mm)
• Total weight: 4.9 oz. (139 g)
•
Flanged baseplate version available
•
•
•
•
High efficiency, 88% at full rated load current
Operating input voltage range: 9-70V
Fixed frequency switching provides predictable EMI
No minimum load requirement
Control Features
Protection Features
•
•
•
•
•
Input under-voltage lockout
Output current limit and short circuit protection
Active back bias limit
Output over-voltage protection
Thermal shutdown
•
•
•
•
On/Off control referenced to input return
Remote sense for the output voltage
Output voltage trim range of +10%, -20%
Optional: Active current share for parallel applications
Screening/Qualification
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
MCOTS series converters (with an MCOTS filter) are designed to meet:
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.# 005-0005572 Rev. 2
11/08/13
•
•
•
•
Product # MCOTS-C-28VE-28-HP
Phone 1-888-567-9596
www.synqor.com
Page 1
MCOTS-C-28VE-28-HP
Output:
28V
Current:
5.8A
Technical Specification
BLOCK DIAGRAM
REGULATION STAGE
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POSITIVE
INPUT
T1
T2
T1
T2
POSITIVE
OUTPUT
1
CURRENT
SENSE
ISOLATION STAGE
8
3
INPUT
RETURN
4
GATE DRIVERS
ISOLATION BARRIER
OUTPUT
RETURN
GATE CONTROL
UVLO
OVSD
CURRENT
LIMIT
2
ON/OFF
PRIMARY
CONTROL
OPTO-ISOLATION
6
SECONDARY
CONTROL
TRIM
7
+ SENSE
5
DATA COUPLING
−
SENSE
TYPICAL CONNECTION DIAGRAM
V
in(+)
V
out(+)
V
in
External
Input
Filter
Electrolytic
Capacitor
V
sense(+)
Trim
R
trim-up
ON/OFF
or
V
sense(
_
)
V
out(
_
)
R
trim-down
C
load
I
load
V
in(
_
)
Product # MCOTS-C-28VE-28-HP
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005572 Rev. 2
11/08/13
Page 2
MCOTS-C-28VE-28-HP
Output:
28V
Current:
5.8A
Technical Specification
MCOTS-C-28VE-28-HP ELECTRICAL CHARACTERISTICS
Tb = 25 °C, Vin = 28dc 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
Notes & Conditions
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Note 3:Start-up guaranteed above 9.9 V, but will operate down to 9V.
Phone 1-888-567-9596
Product # MCOTS-C-28VE-28-HP
www.synqor.com
Doc.# 005-0005572 Rev. 2
11/08/13
Page 3
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Non-Operating
-1
100
V
Continuous
Operating
70
V
Continuous
Operating Transient Protection
100
V
Isolation Voltage
Input to Output
2250
Vdc
Input to Base-Plate
2250
Vdc
Output to Base-Plate
2250
Vdc
Operating Temperature
-55
100
°C
Baseplate temperature
Storage Temperature
-65
135
°C
Voltage at ON/OFF input pin
-2
18
V
INPUT CHARACTERISTICS
Operating Input Voltage Range
9
28
70
V
100V transient for 1 s; see Note 3
Input Under-Voltage Lockout
Turn-On Voltage Threshold
9.1
9.5
9.9
V
Turn-Off Voltage Threshold
7.8
8.2
8.7
V
Lockout Voltage Hysteresis
1.3
V
µF
Recommended External Input Capacitance
100
Typical ESR 0.1-0.2 Ω
Input Filter Component Values (L\C)
0.5\13.2
µH\µF
Internal values; see Figure E
Maximum Input Current
21.5
A
VIN min; Full Load
No-Load Input Current
225
300
mA
Disabled Input Current
4
6
mA
Response to Input Transient
5
V
500V/ms
Input Terminal Ripple Current
635
mA
RMS
Recommended Input Fuse
30
A
Fast acting external fuse recommended
OUTPUT CHARACTERISTICS
Output Voltage Set Point
27.72
28.00
28.28
V
Output Voltage Regulation
Over Line
±0.1
±0.3
%
Over Load
±0.1
±0.3
%
Over Temperature
-420
420
mV
Total Output Voltage Range
27.30
28.70
V
Over sample, line, load, temperature & life
Output Voltage Ripple and Noise
20 MHz bandwidth; See Note 1
Peak-to-Peak
70
120
mV
Full Load
RMS
25
45
mV
Full Load
Operating Output Current Range
0
5.8
A
Subject to thermal derating
Output DC Current-Limit Inception
6.1
6.9
7.7
A
Output Voltage 10% Low
Output DC Current-Limit Shutdown Voltage
15.5
V
Back-Drive Current Limit while Enabled
0.7
A
Negative current drawn from output
Back-Drive Current Limit while Disabled
0
0.4
50
mA
Negative current drawn from output
Maximum Output Capacitance
350
µF
Vout nominal at full load (resistive load)
Output Voltage during Load Current Transient
Step Change in Output Current (0.1 A/µs)
1.5
V
50% to 75% to 50% IOUT max
Settling Time
1
ms
To within 1% VOUT nom
Output Voltage Trim Range
-20
10
%
Across Pins 8 & 4; Figure C; see Note 2
Output Voltage Remote Sense Range
10
%
Across Pins 8 & 4
Output Over-Voltage Protection
32.0
34.4
36.8
V
Over full temp range
EFFICIENCY
#N/A!
#N/A!
#N/A!
#N/A!
#N/A!
100% Load
87.5
%
See Figure 1 for efficiency curve
50% Load
88.5
%
See Figure 1 for efficiency curve
Note 1: Output is terminated with 1 µF ceramic and 15 µF ceramic capacitors. For applications requiring reduced output voltage ripple and 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.
MCOTS-C-28VE-28-HP
Output:
28V
Current:
5.8A
Technical Specification
MCOTS-C-28VE-28-HP ELECTRICAL CHARACTERISTICS
Tb = 25 °C, Vin = 28dc 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
%
Notes & Conditions
Full load, Vout=90% nom.
See Figure F
Maximum Output Capacitance
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See Absolute Maximum Ratings
See Note 1
MΩ
pF
°C
°C
°C
°C
Package rated to 150 °C
UL rated max operating temp 130 °C
kHz
V
V
Isolation stage switching freq. is half this
Application notes Figures A & B
V
kΩ
°C
°C
Average PCB Temperature
10
6
Hrs.
10
6
Hrs.
Ground Benign, 70°C Tb
Ground Mobile, 70°C Tb
DYNAMIC CHARACTERISTICS
Turn-On Transient
Turn-On Time
10
Start-Up Inhibit Time
200
230
250
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
240
260
280
ON/OFF Control
Off-State Voltage
2.4
18
On-State Voltage
-2
0.8
ON/OFF Control
Pull-Up Voltage
5
Pull-Up Resistance
50
Over-Temperature Shutdown OTP Trip Point
125
Over-Temperature Shutdown Restart Hysteresis
10
RELIABILITY CHARACTERISTICS
Calculated MTBF per MIL-HDBK-217F
4.1
Calculated MTBF per MIL-HDBK-217F
0.92
Note 1: Higher values of isolation capacitance can be added external to the module.
STANDARDS COMPLIANCE
Parameter
STANDARDS COMPLIANCE
UL 60950-1/R:2011-12
EN60950-1/A12:2011
Notes & Conditions
Basic Insulation
CAN/CSA-C22.2 No. 60950-1/: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-28VE-28-HP
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005572 Rev. 2
11/08/13
Page 4
MCOTS-C-28VE-28-HP
Output:
28V
Current:
5.8A
Technical Specification
100
95
90
100
95
90
Efficiency (%)
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80
75
70
65
60
80
75
70
65
9.0 Vin
28 Vin
70 Vin
Efficiency (%)
85
85
9 Vin
28 Vin
70 Vin
0
1
2
3
Load Current (A)
4
5
6
60
-55ºC
25ºC
Case Temperature (ºC)
100ºC
Figure 1:
Efficiency at nominal output voltage vs. load current for
minimum, nominal, and maximum input voltage at 25
°
C.
30
25
20
15
10
5
0
Figure 2:
Efficiency at nominal output voltage and 60% rated power vs.
case temperature for minimum, nominal, and maximum input voltage.
30
27
24
21
18
15
12
9
6
3
Power Dissipation (W)
Power Dissipation (W)
9.0 Vin
28 Vin
70 Vin
9 Vin
28 Vin
70 Vin
0
1
2
3
Load Current (A)
4
5
0
-55ºC
25ºC
Case Temperature (ºC)
100ºC
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.
30
25
20
15
10
5
0
7
6
5
4
3
2
1
0
Output Voltage (V)
Iout (A)
9 Vin
28 Vin
70 Vin
55
65
75
85
95
105
115
Base Plate Temperature (°C)
0
1
2
3
4
5
Load Current (A)
6
7
8
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-28VE-28-HP
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005572 Rev. 2
11/08/13
Page 5
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