LF MTC05,15 & 30
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Page 2 - MTC05
Page 13 - MTC15
Page 24 - MTC30
MTC05
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COTS Component for Defense & Avionics Applications
Environmental Performance to MIL-STD 810
10 to 50 VDC Transient Input Range
15 to 40 VDC Steady State Input Range
5W Max Output Power
-55ºC to 100ºC Operation
Cooling Plates and Optional Mounting Flange for Easy Integration
Synchronous Rectification on Low Voltage Outputs
MIL-STD 461E/F EMI Performance
Frequency Synchronization
Introduction
The MTC05 is a COTS DC-DC converter developed specifically for the defense and avionics market. This product has a
full military specification while offering the short lead-times and cost benefits of a COTS component.
The MTC05 uses a forward converter design switching at 450 kHz giving excellent size, efficiency and EMC
performance. The input range is designed to provide short term operation over 10 – 50 VDC to enable the converter to
work at full power through the dips and surges commonly seen in vehicle and aircraft applications. A soft start circuit
provides well-controlled outputs with no overshoot.
Comprehensive control functions such as voltage trim, remote sense, inhibit and frequency synchronization to an
external source are standard features.
When used in conjunction with the MTF input filter module the MTC05 complies to MIL-STD 461E/F CE/CS MIL-STD
1275A-D and MIL-STD 704A.
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Input Characteristics
Characteristic
Input Voltage
Transient Input Voltage Range
UVLO Turn On
UVLO Turn Off
Maximum Input Current
Inhibited Input Current
Inrush Current
Input Reverse Voltage Protection
Minimum
15.5
10
12.8
8.5
Typical
28
Maximum
40
50
14.8
9.8
Units
VDC
VDC
VDC
VDC
A
mA
A
Notes & Conditions
Continuous
10V for 10 s, 50V for 1 s at full load
1.2
40
See models and ratings table for details
Verified by measurement
Peak value
External components required
Output Characteristics
Characteristic
Output Voltage
Output Current
Output Set Tolerance
Minimum Load
Ripple & Noise
Vout
≤5V
Vout >5V
Overvoltage Protection
(1)
Overcurrent Protection
Overtemperature Protection
(2)
Remote Sense
Load Regulation
Load Step Output Transient
Load Step Recovery
Line Regulation
Line Step Output Transient
Line Step Recovery
Maximum Output Capacitance
Start Up Time
70
Minimum
Typical
Maximum
Units
VDC
A
mV
A
mV
%
%
%
ºC
V
%
%
µs
%
%
µs
µF
ms
Notes & Conditions
See models and ratings table for details
See models and ratings table for details
No minimum load required
pk-pk at 100% load and 20 MHz BW
100% load and 20 MHz BW
See Overvoltage Protection application note.
At Vin nominal,r estart time 700ms ±-300ms
Baseplate temp. with 2ºC to 5ºC hysteresis
Total voltage compensation
Vout nominal
Vout nominal 75-25% or 25-75% load changes
Within 1% of Vout nom
Vout nominal at 15.5-40 Vin
Vout nominal at 15.5-40 Vin
Time for Vout to recover to 1% of Vout nom,
with line step 15.5-40 Vin
See fig. 17 to 20
±100
0
24
None
105
102
150
107
0.5
±1
±3
500
±1
±3
500
300 x Iout max
60
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1. Overvoltage protection can be removed by factory, add suffix “-NV” to the part number, e.g. MTC0528S05-NV.
2: For the option without overtemperature protection add suffix “-NT” to the part number, e.g. MTC0528S05-NT.
Models & Ratings
Power
4
4
5
5
5
W
W
W
W
W
Nominal
3.3
5
12
15
28
VDC
VDC
VDC
VDC
VDC
Output Voltage
Min
(1)
3.3
4.0
9.0
11.0
20.0
VDC
VDC
VDC
VDC
VDC
Max
4.0
6.0
13.8
17.0
30.0
(1)
Output
Current
1.21
0.80
0.42
0.33
0.18
A
A
A
A
A
Input Current
(3)
No Load
Full Load
0.03
0.02
0.02
0.01
0.02
A
A
A
A
A
0.18
0.19
0.23
0.23
0.22
A
A
A
A
A
Efficiency
80%
77%
78%
77%
78%
Model
Number
MTC0528S3V3
MTC0528S05
MTC0528S12
MTC0528S15
MTC0528S28
VDC
VDC
(2)
VDC
VDC
VDC
1. Indicates maximum and minimum voltage adjustment (Maximum includes Remote Sense adjustment).
2. The full trim range is not available when the input is <15.5V.
3. Vin = 28 VDC.
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General Specifications
Characteristic
Efficiency
Isolation Voltage
Switching Frequency
Frequency Synch.
MTBF
Inhibit
450
1500
1000
500
Minimum
Typical
Maximum
Units
%
VDC
VDC
VDC
kHz
kHz
Notes & Conditions
See models table and performance graphs
Input to output
Input to case
Output to case
See note.
450
500
See MTBF Calculations
On = TTL High or open circuit; Off = TTL Low or short circuit
Output Voltage
3.3
5
12
15
28
V
V
V
V
V
Rth Case - Ambient
26.4
24.3
22.0
21.1
22.0
ºC/W
ºC/W
ºC/W
ºC/W
ºC/W
Rth Case - Ambient
Note. Control signal needs to be TTL 0-5 VDC square wave. The trigger is the falling edge.
Environmental
Characteristic
Operating Case Temperature
Extended Temperature Range
Storage Temperature
Humidity
Salt Atmosphere
Altitude
Shock
Vibration
Bump
5
Minimum
-40
-55
-55
Typical
Maximum
+100
+100
+125
95
48
70000
100
500
40
Units
ºC
ºC
ºC
%
Hrs
Ft
g
Hz
g
Notes & Conditions
Baseplate temperature
Baseplate temperature. See note.
Relative humidity
MIL-STD 810E Method 509.3
MIL-STD 810D Method 500.2
MIL-STD 810D Method 516.3 crash hazard
for ground equipment
MIL-STD 810D Method 514.3 basic
transportation
2000 bumps in each axes
MIL-STD 810D Method 516.3 crash hazard
Note. For -55 ºC extended operating range, add suffix ‘-LT’ to the part number. e.g. MTC1528S05-LT.
Electromagnetic Compatibility
EMC (see note 2)
Conducted Emissions
Standard
MIL-STD-461E/F
MIL-STD-1275A-D
Immunity
MIL-STD-704A
MIL-STD-704B-F
Conducted Susceptibility
MIL-STD-461E/F
CS101, CS114,
CS115, CS116
Test Level
CE101/CE102
Spikes
Surges
Ripple
600 V input transient
±250 V for 100 µs
100 V for 50 ms (see note 1)
14 VAC pk-pk
50 V for 10 ms
MTF50 module is required
Criteria
Notes & Conditions
MTF50 module is required
MTF50 module is required
10µs 50Ω source impedance MTF50 module is required
Note.
1. 0.5
Ω
source impedance
2. For compliance to D0160D, DEF-STAN-59-41 and GAM-EG13B please contact sales
Safety Approvals
Standard
CE
Category
LVD
3
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MTBF Calculations
Temperature / Environment
20 ºC
40 ºC
60 ºC
80 ºC
100 ºC
Ground Mobile - GM
1450849 Hrs
1000720 Hrs
671113 Hrs
423968 Hrs
246343 Hrs
Airbourne Inhabited Cargo - AIC
1312752 Hrs
900223 Hrs
606117 Hrs
388474 Hrs
230675 Hrs
Airbourne Inhabited Fighter - AIF
671079
457913
315096
214125
140070
Hrs
Hrs
Hrs
Hrs
Hrs
Synchronization
The recommended level for the synchronization is a TTL signal but slightly higher levels may be used without a problem. However the maximum
positive level should not exceed 5V. The ideal synchronization signal is a pulse of minimum of 200ns and low and high levels of <0.8V and 4V to 5V
respectively within a frequency range of 450kHz to 500kHz. The trigger is the falling edge of the signal and the impedance of the sync pin is
>10kohm. If the synchronization feature is not required the sync pin is recommended to be connected to ground to prevent any abnormal
interference.
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