MTC05-30 Series Datasheet, Long Form by XP Power

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Page 2 - MTC05
Page 13 - MTC15
Page 24 - MTC30
POWERING THE WORLD'S CFHTIOAL SYSTEMS
MTC05
Introduction
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
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 Minimum Typical Maximum Units Notes & Conditions
Input Voltage 15.5 28 40 VDC Continuous
Transient Input Voltage Range 10 50 VDC 10V for 10 s, 50V for 1 s at full load
UVLO Turn On 12.8 14.8 VDC
UVLO Turn Off 8.5 9.8 VDC
Maximum Input Current A See models and ratings table for details
Inhibited Input Current 1.2 mA Verified by measurement
Inrush Current 40 A Peak value
Input Reverse Voltage Protection External components required
Output Characteristics
Characteristic Minimum Typical Maximum Units Notes & Conditions
Output Voltage VDC See models and ratings table for details
Output Current A See models and ratings table for details
Output Set Tolerance ±100 mV
Minimum Load 0ANo minimum load required
Ripple & Noise Vout 5V
Vout >5V 24 60
1
mV
%
pk-pk at 100% load and 20 MHz BW
100% load and 20 MHz BW
Overvoltage Protection(1) None % See Overvoltage Protection application note.
Overcurrent Protection 105 150 % At Vin nominal,r estart time 700ms ±-300ms
Overtemperature Protection(2) 102 107 ºC Baseplate temp. with 2ºC to 5ºC hysteresis
Remote Sense 0.5 V Total voltage compensation
Load Regulation ±1 % Vout nominal
Load Step Output Transient ±3 % Vout nominal 75-25% or 25-75% load changes
Load Step Recovery 500 µs Within 1% of Vout nom
Line Regulation ±1 % Vout nominal at 15.5-40 Vin
Line Step Output Transient ±3 % Vout nominal at 15.5-40 Vin
Line Step Recovery 500 µs Time for Vout to recover to 1% of Vout nom,
with line step 15.5-40 Vin
Maximum Output Capacitance 300 x Iout max µF
Start Up Time 70 ms See fig. 17 to 20
Models & Ratings
Power Output Voltage Output
Current
Input Current(3)
Efficiency Model
Number
Nominal Min(1) Max(1) No Load Full Load
4 W 3.3 VDC 3.3 VDC 4.0 VDC 1.21 A 0.03 A 0.18 A 80% MTC0528S3V3
4 W 5 VDC 4.0 VDC 6.0 VDC (2) 0.80 A 0.02 A 0.19 A 77% MTC0528S05
5 W 12 VDC 9.0 VDC 13.8 VDC 0.42 A 0.02 A 0.23 A 78% MTC0528S12
5 W 15 VDC 11.0 VDC 17.0 VDC 0.33 A 0.01 A 0.23 A 77% MTC0528S15
5 W 28 VDC 20.0 VDC 30.0 VDC 0.18 A 0.02 A 0.22 A 78% MTC0528S28
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.
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.
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General Specifications
Characteristic Minimum Typical Maximum Units Notes & Conditions
Efficiency % See models table and performance graphs
Isolation Voltage
1500 VDC Input to output
1000 VDC Input to case
500 VDC Output to case
Switching Frequency 450 kHz
Frequency Synch. 450 500 kHz See note.
MTBF See MTBF Calculations
Inhibit On = TTL High or open circuit; Off = TTL Low or short circuit
Rth Case - Ambient
Output Voltage Rth Case - Ambient
3.3 V
5 V
12 V
15 V
28 V
26.4 ºC/W
24.3 ºC/W
22.0 ºC/W
21.1 ºC/W
22.0 ºC/W
Electromagnetic Compatibility
EMC (see note 2) Standard Test Level Criteria Notes & Conditions
Conducted Emissions MIL-STD-461E/F CE101/CE102 MTF50 module is required
Immunity
MIL-STD-1275A-D
Spikes
Surges
Ripple
±250 V for 100 µs
100 V for 50 ms (see note 1)
14 VAC pk-pk
MTF50 module is required
MIL-STD-704A 600 V input transient 10µs 50Ω source impedance MTF50 module is required
MIL-STD-704B-F 50 V for 10 ms
Conducted Susceptibility MIL-STD-461E/F CS101, CS114,
CS115, CS116 MTF50 module is required
Safety Approvals
Standard Category
CE LVD
Note. Control signal needs to be TTL 0-5 VDC square wave. The trigger is the falling edge.
Note.
1. 0.5 Ωsource impedance
2. For compliance to D0160D, DEF-STAN-59-41 and GAM-EG13B please contact sales
Note. For -55 ºC extended operating range, add suffix ‘-LT’ to the part number. e.g. MTC1528S05-LT.
Environmental
Characteristic Minimum Typical Maximum Units Notes & Conditions
Operating Case Temperature -40 +100 ºC Baseplate temperature
Extended Temperature Range -55 +100 ºC Baseplate temperature. See note.
Storage Temperature -55 +125 ºC
Humidity 95 % Relative humidity
Salt Atmosphere 48 Hrs MIL-STD 810E Method 509.3
Altitude 70000 Ft MIL-STD 810D Method 500.2
Shock 100 g MIL-STD 810D Method 516.3 crash hazard
for ground equipment
Vibration 5 500 Hz MIL-STD 810D Method 514.3 basic
transportation
Bump 40 g 2000 bumps in each axes
MIL-STD 810D Method 516.3 crash hazard
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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.
Temperature / Environment Ground Mobile - GM Airbourne Inhabited Cargo - AIC Airbourne Inhabited Fighter - AIF
20 ºC 1450849 Hrs 1312752 Hrs 671079 Hrs
40 ºC 1000720 Hrs 900223 Hrs 457913 Hrs
60 ºC 671113 Hrs 606117 Hrs 315096 Hrs
80 ºC 423968 Hrs 388474 Hrs 214125 Hrs
100 ºC 246343 Hrs 230675 Hrs 140070 Hrs
MTBF Calculations
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Remote Sensing
Iout
Vout
105-150%
of nominal Iout
Load
Rlead
Rlead
+Vout
-Vout
+Sense
Power Supply
Figure 1. Overcurrent Protection
Notes.
1. To use the remote sense connect +Sense pin to +Vout.
2. When remote sense is not in use leave not connected or connect locally to +Vout.
MTC0528SXX has a trip and restart (hiccup mode)
protection which will turn off the converter after reaching
the limit between 105% to 150% of full load. The converter
will attempt to restart after approximately 700ms.
Overcurrent Protection
Figure 2. MTC05 - Remote Sense Connection Diagram
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Voltage Trim
Converter
Converter
TRIM UP TRIM DOWN
Rx
-Vout
11
8
Adj.
Rx
+Sense
9
8
Adj.
Figure 3. MTC05 - Trim Connections Figure 4. MTC0528S3V3 - Max and Min Adjustment
Vout (V)
Rx (k)
j
Max
Min
Vnom
Limit Max
Limit Min
3.5
4.0
4.5
5.0
5.5
6.0
6.5
1.0 10.0 100.0 1000.0
Figure 5. MTC0528S05 - Max and Min Adjustment
Rx (k)
Vout (V)
Max
Min
Vnom
Limit Max
Limit Min
8.0
9.0
10.0
11.0
12.0
13.0
14.0
1.0 10.0 100.0 1000.0
1
Figure 6. MTC0528S12 - Max and Min Adjustment
Rx (k)
Vout (V)
Max
Min
Vnom
Limit Max
Limit Min
10.0
11.0
12.0
13.0
14.0
15.0
16.0
17.0
18.0
1.0 10.0 100.0 1000.0
Figure 7. MTC0528S15 - Max and Min Adjustment
Rx (k)
Vout (V)
Max
Min
Vnom
Limit Max
Limit Min
19.0
20.0
21.0
22.0
23.0
24.0
25.0
26.0
27.0
28.0
29.0
30.0
31.0
1.0 10.0 100.0 1000.0 10000.0
Figure 8. MTC0528S28 - Max and Min Adjustment
Notes.
1. When adjusting the output voltage do not go above the specified output voltage range (refer to tables) as the Over Voltage Protection
may be triggered when fitted.
2. When adjusting the output voltage do not go below the specified voltage range (refer to tables) as input and output characteristics can not be guaranteed.
3. When not in use leave Adj. pin not-connected.
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EMC Filter Connection Diagram
MTF50 MTC0528Sxx
+Vin (6) +Vout (9) +Vin (4) +Vout
(10)
RL
-Vin (4)
Y Cap (3)
Case (2)
-Vout (11) -Vin (3)
Case (1)
-Vout
(11)
Figure 11. MTC05 - EMC Filter connection diagram
EMC Performance Curves
Figure 9. MTC0528S05 without a filter
Figure 10. MTC0528S05 with MTF50 filter
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Parallel Configuration
Converter
2
+
-
Converter
1
+
-
Supply
Load
+Sense
+Sense
C
Figure 12. Parallel configuration suitable for redundant operation
Converter
2
+
-
Converter
1
+
-
Supply
Load
Adj
R
R
Adj
Figure 13. Parallel configuration for current sharing
Notes.
1. Up to 3 converters to share within 80% max power;
2. To calculate the resistor (R) for the current sharing use the formula: R=(Vout nom (V) x output set tolerance (%))/(Iout nom (A) x current share (%)), e.g.
MTC0528S05 will be: R=(5V x 4%)/(0.8A x 50%)=500mΩ
3. The adjust pin can be used to tune Vout to achieve max of 1% tolerance which helps to achieve better current sharing and keeps the resistor (R) value lower.
Vin+
Vin-
LOAD
MTC05
Inhibit
Vin+
Vin-
LOAD
MTC05
Inhibit
Figure 15. Overvoltage Protection - Trip & Restart
Figure 14. Overvoltage Protection - Latched
Overvoltage Protection
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Start Up Time
Efficiency
0
10
20
30
40
50
60
70
80
90
100
20 40 60 80 100
Iout nom %
Efficiency%
Vin = 15.5 V
Vin = 28.0 V
Vin = 40.0 V
Figure 15. Typical efficiency for MTC0528S05
0
10
20
30
40
50
60
70
80
90
100
20 40 60 80 100
Iout nom %
Efficiency%
Vin = 15.5 V
Vin = 28.0 V
Vin = 40.0 V
Figure 16. Typical efficiency for MTC0528S28
Figure 17. Start up time for MTC0528S05 with full resistive load
- 62 ms
Figure 18. Start up time for MTC0528S05 at full load
and 240 µF - 62 ms
Figure 19. Start up time for MTC0528S28 with full resistive load
- 76 ms
Figure 20. Start up time for MTC0528S28 at full load
and 99 µF - 76 ms
0,1 (254D Bottom View 0'5 (12.7p 0.13M“S 1260“” “50”” (3.3% (32.0“) 119mm 0,343’3332 18-7‘3i 0130““ j J7 (33mg) 1.0 (25.4) o,177(4.5p 0 n - m + n S/nchmnlsallun Inmm N0 Pm Adm +Sense +va -Vuut N0 Pm POWERING THE WORLD‘S CRIT‘CAL SYSTEMS
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Mechanical Details
Pin 1
Pin 6
Pin 12
Pin 7
0.1 (2.54)
0.130±0.008
(3.3±0.2)1.260±0.012
(32.0±0.3)
0.760±0.012
(19.3±0.3)
0.5
(12.7)
0.343+0.020
(8.7+0.5 )
-0.3
-0.012
0.177(4.5)
1.0 (25.4)
0.130±0.008
(3.3±0.2)
Bottom View
MTC05 Connections
Pin Function
1 Case
2 No Pin
3 - Vin
4 + Vin
5 Synchronisation
6 Inhibit
7 No Pin
8 Adjust
9 +Sense
10 +Vout
11 -Vout
12 No Pin
Notes.
1. Dimensions are in inches (mm)
2. Tolerance: ±0.02 inches (±0.5 mm)
3. Weight: 0.02 lb (10 g)
4. Materials & Finish:
Pin - Material: Cu Zn30 2.5µm Ni
Finish: 0.2-0.5µm AU (HV 170-200)
Case - Material: Aluminium (Al Mg Si 0.5)
Finish: Chromated
Nameplate - Non-conductive plastic
Soldering.
Wave soldering: 260 ºC max for 10 s
Soldering gun: 450 º C max for 5 s
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North American HQ
XP Power
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Phone : +1 (408) 732-7777
Fax : +1 (408) 732-2002
Email : nasales@xppower.com
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Horseshoe Park, Pangbourne, Berkshire, RG8 7JW, UK
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Phone : +49 (0)421 63 93 3 0
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Asian HQ
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Lobby B #02-02, Singapore 149598
Phone : +65 6411 6900
Fax : +65 6741 8730
Email : apsales@xppower.com
Web : www.xppowerchina.com /
www.xppower.com
North American Sales Offices
Toll Free ....................+1 (800) 253-0490
New England.............+1 (603) 818-4020
Mid Atlantic ...............+1 (973) 658-8001
Central Region ..........+1 (972) 578-1530
Western Region ........+1 (408) 732-7777
European Sales Offices
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Denmark ......................+45 43 42 38 33
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United Kingdom ....+44 (0)118 984 5515
Asian Sales Offices
Shanghai................... +86 21 6486 7817
Singapore ..................... +65 6411 6902
Distributors
Australia......................+61 2 9809 5022 Amtex
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Global Distributors
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MTC15
Introduction
COTS Component for Defense & Avionics Applications
Single & Dual Output Models
Environmental Performance to MIL-STD 810
10 to 50 VDC Transient Input Range
15 to 40 VDC Steady State Input Range
15W Max Output Power
-55ºC to 100ºC Operation
Cooling Plates and Mounting Holes for Easy Integration
Synchronous Rectification on Low Voltage Outputs
MIL-STD 461E/F EMI Performance
Frequency Synchronization
The MTC15 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 MTC15 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 MTC15 complies to MIL-STD 461E/F CE/CS MIL-STD
1275A-D and MIL-STD 704A.
lnput Voltage Translent Input Voltage Range UVLO Turn On UVLO Turn ott Maxlmum lnput Current lnmblted lnput Current lnrusn Current lnput Reverse Voltage Pmtectlon Conllnuous 10V for 10 5, 50V tor1 s at full load See models and ratlngs taole for detalls Vented by measurement Peak value External components requlred Output Voltage VDC See models and ratlngs table tor detalls Output Current A See models and ratlngs table tor detalls Output Set Tolerance :1 00 mV Mlmmum Load 0 A No mlnlmum load requlred Rlpple at Nelse Vout 55v 335 00 mV pkrpk at 100% load and 20 MHz BW Overvoltage Proteotlon 110 120 % Vout nornlnal Overload Proteotlon 105 150 % At vln nornlnal Overourrent Proteotlon 105 150 % Dual outputs only. at vln nornlnal Overtemperature Proteotlon 102 107 ”C Baseplate ternp. wrth 2‘10 to sue nysteresls Remote Sense 0.5 v Total voltage compensatlon, slngle output only Load Regulatlon :1 % Vout nornlnal Load Step Output Translent :3 % Vout nornlnal 75725% or 25575% load changes Load Step Recovery 500 us wltnln 1% ot Vout nom Llne Regulatlon :1 % Vout nornlnal at 155740 vln Llne Step Output Translent :3 % Vout nornlnal at 155740 vln Maxlmum Output Capacltanoe 300 x lout max uF Start Up Tlme 35 ms See 119 17 to 20 3.3 VDC 4.0 VDC 9.0 VDC 1 1.0 VDC 20.0 VDC N/A N/A 4.0 VDC 6.0 VDC 13.3 VDC 17.0 VDC 30.0 VDC N/A N/A MTC152ESEV3 MTC152ESOS MTC152ESt2 MTC1525815 MTC152ES2E MTC1 525012 MTC1 525015
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Input Characteristics
Characteristic Minimum Typical Maximum Units Notes & Conditions
Input Voltage 15.5 28 40 VDC Continuous
Transient Input Voltage Range 10 50 VDC 10V for 10 s, 50V for 1 s at full load
UVLO Turn On 13.5 14.8 VDC
UVLO Turn Off 8.5 9.8 VDC
Maximum Input Current A See models and ratings table for details
Inhibited Input Current 4.1 mA Verified by measurement
Inrush Current 40 A Peak value
Input Reverse Voltage Protection External components required
Output Characteristics
Characteristic Minimum Typical Maximum Units Notes & Conditions
Output Voltage VDC See models and ratings table for details
Output Current A See models and ratings table for details
Output Set Tolerance ±100 mV
Minimum Load 0ANo minimum load required
Ripple & Noise Vout 5V
Vout >5V
33.5 60
1
mV
%
pk-pk at 100% load and 20 MHz BW
100% load and 20 MHz BW
Overvoltage Protection(1) 110 120 % Vout nominal
Overload Protection 105 150 % At Vin nominal
Overcurrent Protection 105 150 % Dual outputs only, at Vin nominal
Overtemperature Protection(2) 102 107 ºC Baseplate temp. with 2ºC to 5ºC hysteresis
Remote Sense 0.5 V Total voltage compensation, single output only.
Load Regulation ±1 % Vout nominal
Cross Regulation 1%
Dual outputs only. V1 at Inom,V2 75-100%
Inom. See curves for non-symmetrical loads.
Load Step Output Transient ±3 % Vout nominal 75-25% or 25-75% load changes
Load Step Recovery 500 µs Within 1% of Vout nom
Line Regulation ±1 % Vout nominal at 15.5-40 Vin
Line Step Output Transient ±3 % Vout nominal at 15.5-40 Vin
Line Step Recovery 500 µs Time for Vout to recover to 1% of Vout nom,
with line step 15.5-40 Vin
Maximum Output Capacitance 300 x Iout max µF
Start Up Time 35 ms See fig. 17 to 20
Models & Ratings
Max Output
Power
Output Voltage Output Current Input Current(2)
Efficiency Model
Number
Nominal Min(1) Max(1) Inom Imax(3) No Load Full Load
10 W 3.3 VDC 3.3 VDC 4.0 VDC 3.03 A N/A 0.04 A 0.46 A 77% MTC1528S3V3
12 W 5 VDC 4.0 VDC 6.0 VDC 2.40 A N/A 0.05 A 0.53 A 81% MTC1528S05
15 W 12 VDC 9.0 VDC 13.8 VDC 1.25 A N/A 0.04 A 0.67 A 80% MTC1528S12
15 W 15 VDC 11.0 VDC 17.0 VDC 1.00 A N/A 0.05 A 0.67 A 80% MTC1528S15
15 W 28 VDC 20.0 VDC 30.0 VDC 0.54 A N/A 0.03 A 0.69 A 78% MTC1528S28
15 W ±12 VDC N/A N/A ±0.62 A ±1.00 A 0.03 A 0.68 A 80% MTC1528D12
15 W ±15 VDC N/A N/A ±0.50 A ±0.80 A 0.03 A 0.68 A 80% MTC1528D15
1. Indicates maximum and minimum voltage adjustment (Maximum includes Remote Sense adjustment).
2. Vin = 28 VDC.
3. Maximum output power must not exceed 15 W.
1. Overvoltage protection can be removed by factory, add suffix “-NV” to the part number, e.g. MTC1528S05-NV.
2: For the option without overtemperature protection add suffix “-NT” to the part number, e.g. MTC1528S05-NT.
Etherency Swrtchrng Frequency MTBF \nhrort Operatrng Case Temperature Extended Temperature Range Storage Temperature Humrdrty Sat Atmosphere Almude 500 400 450 500 See table % VDC VDC VDC kHz On : T'TL Hrgn or open crrcurt; Off : TFL Low or short crrcurt . . 3.3 V See modets table and pertormance graphs tnput to output tnput to case Output to case Frequency synoh 4007500 kHz. See note Baeeptate temperature Easeptate temperature. See note (7LT) Retatrve humrdrty MILVSTD 510E Method 509.3 MILVSTD 510D Method 500 2 MILVSTD 510D Method 515 a crash hazard MILrSTD 510D Method 514 a basrc 2000 bumps rn each axes Conducted Emresrone MILVSTD7461BF cam/c902 MTFSO modute Is reourred V for or 5 pk on Standard Category CE LVD P T W C S
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General Specifications
Characteristic Minimum Typical Maximum Units Notes & Conditions
Efficiency % See models table and performance graphs
Isolation Voltage
1500 VDC Input to output
1000 VDC Input to case
500 VDC Output to case
Switching Frequency 400 450 500 kHz Frequency synch 400-500 kHz. See note
MTBF See table
Inhibit On = TTL High or open circuit; Off = TTL Low or short circuit
Rth Case - Ambient
Output Voltage Rth Case - Ambient
3.3 V
5 V
12 V
15 V
28 V
±12 V
±15 V
17.3 ºC/W
17.6 ºC/W
16.3 ºC/W
16.3 ºC/W
15.3 ºC/W
15.0 ºC/W
15.0 ºC/W
Electromagnetic Compatibility
EMC (see note 2) Standard Test Level Criteria Notes & Conditions
Conducted Emissions MIL-STD-461E/F CE101/CE102 MTF50 module is required
Immunity
MIL-STD-1275A-D
Spikes
Surges
Ripple
±250 V for 100 µs
100 V for 50 ms (see note 1)
14 VAC pk-pk
MTF50 module is required
MIL-STD-704A 600 V input transient 10µs 50Ω source impedance MTF50 module is required
MIL-STD-704B-F 50 V for 10 ms
Conducted Susceptibility MIL-STD-461E/F CS101, CS114,
CS115, CS116 MTF50 module is required
Safety Approvals
Standard Category
CE LVD
Note. Control signal needs to be TTL 0-5 VDC square wave. The trigger is the falling edge.
Note. For -55 ºC extended operating range, add suffix ‘-LT’ to the part number. e.g. MTC1528S05-LT
Note.
1. 0.5 Ωsource impedance.
2. For compliance to D0160D, DEF-STAN-59-41 and GAM-EG13B please contact sales.
Environmental
Characteristic Minimum Typical Maximum Units Notes & Conditions
Operating Case Temperature -40 +100 ºC Baseplate temperature
Extended Temperature Range -55 +100 ºC Baseplate temperature. See note (-LT).
Storage Temperature -55 +125 ºC
Humidity 95 % Relative humidity
Salt Atmosphere 48 hrs MIL-STD 810E Method 509.3
Altitude 70000 Ft MIL-STD 810D Method 500.2
Shock 100 g MIL-STD 810D Method 516.3 crash hazard
for ground equipment
Vibration 5 500 Hz MIL-STD 810D Method 514.3 basic
transportation
Bump 40 g 2000 bumps in each axes
MIL-STD 810D Method 516.3 crash hazard
699369 Hrs 463029 Hrs 314033 Hrs 216493 Hrs 150255 Hrs 636655 Hrs 437272 Hrs 269612 Hrs 160146 Hrs 91005 Hrs 675615 Hrs 453157 Hrs 311322 Hrs 217962 Hrs 153735 Hrs 672727 Hrs 431663 Hrs 259025 Hrs 151437 Hrs 92393 Hrs 334141 Hrs 223314 Hrs 154451 Hrs 109671 Hrs 79262 Hrs 365034 Hrs 230513 Hrs 145511 Hrs 91250 Hrs 55246 Hrs
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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 400kHz 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.
Temperature / Environment Ground Mobile - GM Airbourne Inhabited Cargo - AIC Airbourne Inhabited Fighter - AIF
20 ºC 699369 Hrs 678618 Hrs 334141 Hrs
40 ºC 463029 Hrs 453157 Hrs 223314 Hrs
60 ºC 314033 Hrs 311322 Hrs 154451 Hrs
80 ºC 216493 Hrs 217962 Hrs 109671 Hrs
100 ºC 150255 Hrs 153738 Hrs 79262 Hrs
MTBF Calculations - Single Outputs
Temperature / Environment Ground Mobile - GM Airbourne Inhabited Cargo - AIC Airbourne Inhabited Fighter - AIF
20 ºC 686658 Hrs 672727 Hrs 365034 Hrs
40 ºC 437272 Hrs 431663 Hrs 230513 Hrs
60 ºC 269612 Hrs 269025 Hrs 145511 Hrs
80 ºC 160146 Hrs 161437 Hrs 91280 Hrs
100 ºC 91008 Hrs 92393 Hrs 56246 Hrs
MTBF Calculations - Dual Outputs
Vout “mm m numma‘ vm A Cunem ur Puner um Pam! / Tnv Pam ./ 105450% 00 numma‘ but '°“‘
Remote Sensing - Single Output Models Only
Current or Power Limit Point
Iout
Vout
105-150%
of nominal Iout
40-70%
of nominal
Vout
Trip Point
Load
Rlead
Rlead
+Vout
-Vout
+Sense
Power Supply
Figure 1. Overload Protection
Notes.
1. To use the remote sense connect +Sense pin to +Vout.
2. When remote sense is not in use leave not connected or connected locally to +Vout.
MTC1528SXX has overload protection. After reaching the
limit between 105% to 150% of Inom (current or power
limit point) it will reduce the output voltage protecting the
converter from overheating. When Vout nom is in the range
of 40% to 70% the power will drop to 0 (trip point). The
unit will attempt to restart after 700ms typical.
MTC1528DXX has overload protection similar to the single
outputs when both outputs are loaded symmetrically. In
addition, each output also has an individual current limit
between 105% to 150% of Imax to protect applications
with non-symmetrical loads.
Overload Protection
Figure 2. MTC15 - Remote Sense Connection Diagram
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v I:
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6
Voltage Trim - Single Output Models Only
Converter
Converter
TRIM UP TRIM DOWN
Rx
-Vout
12
13
Adj.
Rx
+Sense
11
13
Adj.
Rx (k)
Vout (V)
Max
Limit max
Vnom
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
4.0
4.1
1101001000
Figure 3. MTC15 - Trim connections Figure 4. MTC1528S3V3 - Max and Min Adjustment
Vout (V)
Rx (k)
3.5
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
101001000
Max
Min
Vnom
Limit max
Limit min
R
Figure 5. MTC1528S05 - Max and Min Adjustment
Rx (k)
Vout (V)
7
8
9
10
11
12
13
14
110 100 1000
Max
Min
Vnom
Limit max
Limit min
V
Figure 6. MTC1528S12 - Max and Min Adjustment
Rx (k)
Vout (V)
9
10
11
12
13
14
15
16
17
18
1101001000
Max
Min
Vnom
Limit max
Limit min
Figure 7. MTC1528S15 - Max and Min Adjustment
Rx (k)
Vout (V)
19
20
21
22
23
24
25
26
27
28
29
30
31
10 100 1000
Max
Min
Vnom
Limit max
Limit min
R
Figure 8. MTC1528S28 - Max and Min Adjustment
Notes.
1. When adjusting the output voltage do not go above the max. output voltage limit (refer to tables) as the overvoltage protection may be triggered when fitted.
2. When adjusting the output voltage do not go below the specified voltage range (refer to tables) as input and output characteristics can not be guaranteed.
3. When not in use leave Adj. pin not-connected.
mmnnmus Nmmmem namamns yum: mg I u m 1m MIISVI mm unmus N.» mmamun Du ISM/m m M:
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EMC Filter Connection Diagram
MTF50 MTC1528Sxx
+Vin (6) +Vout (9) +Vin (6) +Vout
(14)
RL
-Vin (4)
Y Cap (3)
Case (2)
-Vout (11) -Vin (4)
Case (2)
-Vout
(12)
Figure 11. MTC15 - EMC Filter connection diagram
EMC Performance Curve Examples
Figure 9. MTC1528S05 without a filter
Figure 10. MTC1528S05 with MTF50 filter
O o + o N )7 . U | I . . ’I l H _. o R O o + o '—' Supply Converter 1 Ad] - - -|:| - -' 07 _ . . ' I I Load R I\ 0 + o '—‘ » K 3. Converter E, 2 Ad] : _ _ _E _ _ A _. - o W O S
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Parallel Configuration - Single Output Models Only
Converter
2
+
-
Converter
1
+
-
Supply
Load
+Sense
+Sense
C
Converter
2
+
-
Converter
1
+
-
Supply
Load
Adj
R
R
Adj
Figure 12. Parallel configuration suitable for redundant operation
Figure 13. Parallel configuration for current sharing
Notes.
1. Up to 3 converters to share within 80% max power;
2. To calculate the resistor (R) for the current sharing use the formula: R=(Vout nom (V) x output set tolerance (%))/(Iout nom (A) x current share (%)), e.g.
MTC1528S05 will be: R=(5V x 4%)/(2.40A x 50%)=167mΩ
3. The adjust pin can be used to tune Vout to achieve max of 1% tolerance which helps to achieve better current sharing and keeps the resistor (R) value lower.
“Eek I; own MPos:75.Uflms cumuH Tek J1. ostun Mm 75mm; CURSOR + TVD Tw , ( Queue Que“: ‘ ‘ Delta Della 1r——[ 35mm \r—'—’ 34mm 2mm 2mm: ‘ cum 1 EuvsaH UDUfls ‘ mums + 4 2v—‘ Cursor 2 z—-— ‘ 5mm 2 35mm: ‘ 34mm EH1 2.00m CH2 200w M25.Dms one/mu :m 200w CH2 2mm: M250!“ cnz/mv IU—Maw-flfi 1731
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Start Up Time
Efficiency
0
10
20
30
40
50
60
70
80
90
100
20406080100
Iout %
Efficiency%
Vin = 15.5 V
Vin = 28.0 V
Vin = 40.0 V
0
10
20
30
40
50
60
70
80
90
100
20406080100
Iout %
Efficiency%
Vin = 15.5 V
Vin = 28.0 V
Vin = 40.0 V
Figure 14. Typical efficiency for MTC1528S05 Figure 15. Typical efficiency for MTC1528S28
Efficiency%
Vin = 15.5 V
Vin = 28.0 V
Vin = 40.0 V
50
60
70
80
90
100
25/25% 50/50% 80/20% 20/80%
Iout %
Figure 16. Typical efficiency for MTC1528D15
Figure 17. Start up time for MTC1528S05 with full resistive load
- 35 ms
Figure 18. Start up time for MTC1528S05 at full load
and 790 µF - 34 ms
Figure 19. Start up time for MTC1528S28 with full resistive load
- 32.4 ms
Figure 20. Start up time for MTC1528S28 at full load
and 150 µF - 41.6 ms
HHH HHH HHH
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Dual Output Cross Regulation
Iout2 [A]
Vout2@Vin=15.5V
Vout2@Vin=28V
Vout2@Vin=40V
Vout1@Vin=15.5V
Vout1@Vin=28V
Vout1@Vin=40V
Vout Vout
Vout
Vout
[V]
Vout2@Vin=15.5V
Vout2@Vin=28V
Vout2@Vin=40V
Vout1@Vin=15.5V
Vout1@Vin=28V
Vout1@Vin=40V
12.000
13.000
14.000
15.000
16.000
17.000
18.000
0.00 0.05 0.10 0.15 0.20 0.25
Iout2 [A]
MTC1528D15
Output voltage over minimum load
Iout1=constant nominal load (0.5A); Iout2=variable
MTC1528D15
Output voltage over minimum load
Iout1=constant nominal load (0.8A); Iout2=variable
MTC1528D15
Output voltage over minimum load
Iout1=constant nominal load (0.25A); Iout2=variable
10.000
10.500
11.000
11.500
12.000
12.500
13.000
13.500
14.000
0.00 0.05 0.10 0.15 0.20 0.25
Iout2 [A]
Vout
[V]
Vout2@Vin=15.5V
Vout2@Vin=28V
Vout2@Vin=40V
Vout1@Vin=15.5V
Vout1@Vin=28V
Vout1@Vin=40V
MTC1528D12
Output voltage over minimum load
Iout1=constant nominal load (1.0A); Iout2=variable
MTC1528D12
Output voltage over minimum load
Iout1=constant nominal load (0.3A); Iout2=variable
10.000
10.500
11.000
11.500
12.000
12.500
13.000
13.500
14.000
0.00 0.10 0.20 0.30 0.40 0.50 0.60
Iout2 [A]
Vout2@Vin=15.5V
Vout2@Vin=28V
Vout2@Vin=40V
Vout1@Vin=15.5V
Vout1@Vin=28V
Vout1@Vin=40V
Vout
MTC1528D12
Output voltage over minimum load
Iout1=constant nominal load (0.62A); Iout2=variable
13.500
14.000
14.500
15.000
15.500
16.000
16.500
0.00 0.10 0.20 0.30 0.40 0.50 0.60
Iout2 [A]
Vout2@Vin=15.5V
Vout2@Vin=28V
Vout2@Vin=40V
Vout1@Vin=15.5V
Vout1@Vin=28V
Vout1@Vin=40V
13.000
13.500
14.000
14.500
15.000
15.500
16.000
16.500
17.000
0.00 0.05 0.10 0.15 0.20 0.25
Iout2 [A]
Vout2@Vin=15.5V
Vout2@Vin=28V
Vout2@Vin=40V
Vout1@Vin=15.5V
Vout1@Vin=28V
Vout1@Vin=40V
10.000
10.500
11.000
11.500
12.000
12.500
13.000
13.500
14.000
0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35
Nu Pm Case No Pm -Vm Syncnmmsauun +Vm mmm Nu Pm Nu Pm Nu Pm +Sense -Vuut (cow Ad‘ust mm N0 Pm Case No Pm -Vm Synchromsanon +Vln Inmm N0 Pin No Pm -Vuut N0 Pm coM N0 Pm mm
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Mechanical Details
14
8
1
7
0.382+0.020
(9.7+0.5 )
1.024±0.012
(26.0±0.3)
-0.3
-0.012
0.500+0.021
(12.7+0.5 )
-0.3
-0.012
0.1 (2.54)
0.150 (3.8)
1.276 (32.4)
1.3 (33.02)
0.216±0.008
(5.4±0.2)
0.724
(18.4)
1.575±0.012(40.0±0.3)
0.138±0.008
(3.5±0.2)0.177(4.5)
Bottom View
Single Output
Dual Output
MTC15 Connections
Pin Single Output Dual Output
1 No Pin No Pin
2 Case Case
3 No Pin No Pin
4 - Vin - Vin
5 Synchronisation Synchronisation
6 + Vin + Vin
7 Inhibit Inhibit
8 No Pin No Pin
9 No Pin No Pin
10 No Pin -Vout
11 +Sense No Pin
12 -Vout (COM) COM
13 Adjust No Pin
14 +Vout + Vout
Notes.
1. Dimensions are in inches (mm)
2. Tolerance: ±0.02 inches (±0.5 mm)
3. Weight: 0.04 lb (20 g)
4. Materials & Finish:
Pin - Diameter: 0.032 (0.8)
Material: Cu Zn30 2.5 µm Ni
Finish: 0.2-0.5 µm AU (HV 170-200)
Mounting Hole - Diameter: 0.102 (2.6)
Case - Material: Aluminium (Al Mg Si 0.5)
Finish: Chromated
Nameplate - Non-conductive plastic
Soldering.
Wave soldering: 260 ºC max for 10 s
Soldering gun: 450 º C max for 5 s
Nam. Amman Hr: North American Sales umees Dlsmhulurs m
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North American HQ
XP Power
990 Benecia Avenue, Sunnyvale, CA 94085
Phone : +1 (408) 732-7777
Fax : +1 (408) 732-2002
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Auf der Höhe 2, D-28357 Bremen, Germany
Phone : +49 (0)421 63 93 3 0
Fax : +49 (0)421 63 93 3 10
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XP Power
401 Commonwealth Drive, Haw Par Technocentre,
Lobby B #02-02, Singapore 149598
Phone : +65 6411 6900
Fax : +65 6741 8730
Email : apsales@xppower.com
Web : www.xppowerchina.com /
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North American Sales Offices
Toll Free ....................+1 (800) 253-0490
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Central Region ..........+1 (972) 578-1530
Western Region ........+1 (408) 732-7777
European Sales Offices
Austria.....................+43 (0)1 41 63 3 08
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Denmark ......................+45 43 42 38 33
Finland ....................... +358 2 4788 500
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Germany ...............+49 (0)421 63 93 3 0
Italy ............................+39 02 70103517
Netherlands...........+49 (0)421 63 93 3 0
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Asian Sales Offices
Shanghai................... +86 21 6486 7817
Singapore ..................... +65 6411 6902
Distributors
Australia......................+61 2 9809 5022 Amtex
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Global Distributors
Americas .................. Newark element14 newark.com
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MTC30
Introduction
COTS Component for Defense & Avionics Applications
Single & Dual Output Models
Environmental Performance to MIL-STD 810
10 to 50 VDC Transient Input Range
15 to 40 VDC Steady State Input Range
35W Max Output Power
-55ºC to 100ºC Operation
Cooling Plates and Mounting Holes for Easy Integration
Synchronous Rectification on Low Voltage Outputs
MIL-STD 461E EMI Performance
Frequency Synchronization
Thermal Warning (Battle Mode) Signal
The MTC30 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 MTC30 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. The MTC30 contains an over temperature warning signal (battle mode) that gives
user control over the temperature shutdown function of the converter.
The internal filtering meets the conducted emission requirements of MIL-STD 461E/F without external components.
When used in conjunction with the MTF input filter module the MTC30 complies to MIL-STD 461E/F CE/CS, MIL-STD
1275A-D and MIL-STD 704A-F.
lnput Voltage Translent Input Voltage Range UVLO Turn On UVLO Turn ott Maxlmum lnput Current lnmblted lnput Current lnrusn Current lnput Reverse Voltage Pmtectlon Conllnuous 10V for 10 5, 50V tor1 s at full load See models and ratlngs taole for detalls Vented by measurement Peak value External components requlred Output Voltage VDC See models and ratlngs table tor detalls Output Current A See models and ratlngs table tor detalls Output Set Tolerance :1 00 mV Mlmmum Load 0 A No mlnlmum load requlred Rlpple at Nelse Vout 55v 40 00 mV pkrpk at 100% load and 20 MHz BW Overvoltage Proteotlon 110 120 % Vout nornlnal Overload Proteotlon 105 150 % At vln nornlnal Overourrent Proteotlon 105 150 % Dual outputs only. at vln nornlnal Overtemperature Proteotlon 102 107 ”C Baseplate ternp. wrth 2‘10 to sue nysteresls Remote Sense 0.5 v Total voltage compensatlon Load Regulatlon :1 % Vout nornlnal Load Step Output Translent :3 % Vout nornlnal 75725% or 25575% load changes Load Step Recovery 500 us wltnln 1% ot Vout nom Llne Regulatlon :1 % Vout nornlnal at 155740 vln Llne Step Output Translent :3 % Vout nornlnal at 155740 vln Maxlmum Output Capacltanoe 300 x lout max uF Start Up Tlme 45 ms See 119 17 to 20 BGVDC AOVDC QOVDC 11 0 VDC 20 0 VDC N/A N/A 4.0 VDC 6.0 VDC 13.3 VDC 17.0 VDC 30.0 VDC N/A N/A MTCBOZESGVE MTCBOZESOS MT0302851 2 MT0302851 5 MTCBOZESZB MT03028D1 2 MT03028D1 5
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2
Input Characteristics
Characteristic Minimum Typical Maximum Units Notes & Conditions
Input Voltage 15.5 28 40 VDC Continuous
Transient Input Voltage Range 10 50 VDC 10V for 10 s, 50V for 1 s at full load
UVLO Turn On 13.5 14.8 VDC
UVLO Turn Off 8.5 9.8 VDC
Maximum Input Current A See models and ratings table for details
Inhibited Input Current 4.9 mA Verified by measurement
Inrush Current 52 A Peak value
Input Reverse Voltage Protection External components required
Output Characteristics
Characteristic Minimum Typical Maximum Units Notes & Conditions
Output Voltage VDC See models and ratings table for details
Output Current A See models and ratings table for details
Output Set Tolerance ±100 mV
Minimum Load 0ANo minimum load required
Ripple & Noise Vout 5V
Vout >5V
40 60
1
mV
%
pk-pk at 100% load and 20 MHz BW
100% load and 20 MHz BW
Overvoltage Protection(1) 110 120 % Vout nominal
Overload Protection 105 150 % At Vin nominal
Overcurrent Protection 105 150 % Dual outputs only, at Vin nominal
Overtemperature Protection(2) 102 107 ºC Baseplate temp. with 2ºC to 5ºC hysteresis
Remote Sense 0.5 V Total voltage compensation
Load Regulation ±1 % Vout nominal
Cross Regulation 1%
Dual outputs only. V1 at Inom,V2 75-100%
Inom. See curves for non-symmetrical loads.
Load Step Output Transient ±3 % Vout nominal 75-25% or 25-75% load changes
Load Step Recovery 500 µs Within 1% of Vout nom
Line Regulation ±1 % Vout nominal at 15.5-40 Vin
Line Step Output Transient ±3 % Vout nominal at 15.5-40 Vin
Line Step Recovery 500 µs Time for Vout to recover to 1% of Vout nom,
with line step 15.5-40 Vin
Maximum Output Capacitance 300 x Iout max µF
Start Up Time 45 ms See fig. 17 to 20
Models & Ratings
Max Output
Power
Output Voltage Output Current Input Current (3)
Efficiency Model
Number
Nominal Min(1) Max(1) Inom Imax(4) No Load Full Load
20 W 3.3 VDC 3.3 VDC 4.0 VDC 6.06 A N/A 0.06 A 0.89 A 80% MTC3028S3V3
25 W 5 VDC 4.0 VDC 6.0 VDC 5.00 A N/A 0.09 A 1.08 A 83% MTC3028S05
32 W 12 VDC 9.0 VDC 13.8 VDC (2) 2.70 A N/A 0.05 A 1.41 A 81% MTC3028S12
35 W 15 VDC 11.0 VDC 17.0 VDC (2) 2.33 A N/A 0.06 A 1.54 A 81% MTC3028S15
35 W 28 VDC 20.0 VDC 30.0 VDC 1.25 A N/A 0.07 A 1.51 A 83% MTC3028S28
30 W ±12 VDC N/A N/A ±1.25 A ±2.00 A 0.04 A 1.33 A 81% MTC3028D12
30 W ±15 VDC N/A N/A ±1.00 A ±1.60 A 0.04 A 1.33 A 80% MTC3028D15
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
4. Maximum output power must not exceed 30 W.
1. Overvoltage protection can be removed by factory, add suffix “-NV” to the part number, e.g. MTC3028S05-NV.
2: For the option without overtemperature protection add suffix “-NT” to the part number, e.g. MTC3028S05-NT.
Etherency Swrtchrng Frequency MTBF \nhrort Operatrng Case Temperature Extended Temperature Range Storage Temperature Humrdrty Almude Sat Atmosphere 500 400 450 500 See table % VDC VDC VDC kHz On : T'TL Hrgn or open crrcurt; Off : TFL Low or short crrcurt See modets table and pertormance graphs tnput to output tnput to case Output to case Frequency synoh 4007500 kHz. See note Esaeeptate temperature Esaeeptate temperature. See note Retatrve humrdrty MILVSTD 510D Method 500 2 MILVSTD 510E Method 509.3 MILVSTD 510D Method 515 a crash hazard MILrSTD 510D Method 514 a basrc 2000 bumps rn each axes MILVSTD7461BF cam/cam V for or 5 pk on Standard Category CE LVD P T W C S
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General Specifications
Characteristic Minimum Typical Maximum Units Notes & Conditions
Efficiency % See models table and performance graphs
Isolation Voltage
1500 VDC Input to output
1000 VDC Input to case
500 VDC Output to case
Switching Frequency 400 450 500 kHz Frequency synch 400-500 kHz. See note
MTBF See table
Inhibit On = TTL High or open circuit; Off = TTL Low or short circuit
Rth Case - Ambient
Output Voltage Rth Case - Ambient
3.3 V
5 V
12 V
15 V
28 V
±12 V
±15 V
9.2 ºC/W
9.3 ºC/W
8.7 ºC/W
8.6 ºC/W
8.8 ºC/W
8.7 ºC/W
8.7 ºC/W
Environmental
Characteristic Minimum Typical Maximum Units Notes & Conditions
Operating Case Temperature -40 +100 ºC Baseplate temperature
Extended Temperature Range -55 +100 ºC Baseplate temperature. See note.
Storage Temperature -55 +125 ºC
Humidity 95 % Relative humidity
Altitude 70000 Ft MIL-STD 810D Method 500.2
Salt Atmosphere 48 hrs MIL-STD 810E Method 509.3
Shock 100 g MIL-STD 810D Method 516.3 crash hazard
for ground equipment
Vibration 5 500 Hz MIL-STD 810D Method 514.3 basic
transportation
Bump 40 g 2000 bumps in each axes
MIL-STD 810D Method 516.3 crash hazard
Electromagnetic Compatibility
Standard Test Level Criteria Notes & Conditions
Conducted Emissions MIL-STD-461E/F CE101/CE102
DEF-STAN-59-41 TBA MTF50 module is required
Immunity
MIL-STD-1275A-D
Spikes
Surges
Ripple
±250 V for 100 µs
100 V for 50 ms (see note)
14 VAC pk-pk
MTF50 module is required
MIL-STD-704A 600 V input transient 10µs 50Ω source impedance MTF50 module is required
MIL-STD-704B-F 50 V for 10 ms
Conducted Susceptibility MIL-STD-461E/F CS101, CS114,
CS115, CS116 MTF50 module is required
Safety Approvals
Standard Category
CE LVD
Note. Control signal needs to be TTL 0-5 VDC square wave. The trigger is the falling edge.
Note. For -55 ºC extended operating range, add suffix ‘-LT’ to the part number. e.g. MTC3028S05-LT
Note. 0.5 Ωsource impedance
572505 Hrs 355515 Hrs 255016 Hrs 155556 Hrs 130030 Hrs 559576 Hrs 372925 Hrs 247525 Hrs 153916 Hrs 107295 Hrs 511765 Hrs 344569 Hrs 237025 Hrs 165175 Hrs 115635 Hrs 537722 Hrs 364501 Hrs 247505 Hrs 167263 Hrs 111652 Hrs 245551 Hrs 155992 Hrs 113535 Hrs 75553 Hrs 56575 Hrs 255094 Hrs 193225 Hrs 131394 Hrs 50213 Hrs 62205 Hrs
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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 400kHz 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.
Thermal Warning (TW)
The thermal warning pin is an open collector output and it can be used for an over-temperature protection up to 107 °C
by connecting it to the inhibit pin. When the base-plate temperature of the
converter is between 102 °C and 107 °C the transistor will be switched on and will pull the inhibit pin to ground. If the
TW pin is not connected the converter will run without over-temperature protection. This could be used during battle
when the part will operate until destroy itself due to overheating.
Temperature / Environment Ground Mobile - GM Airbourne Inhabited Cargo - AIC Airbourne Inhabited Fighter - AIF
20 ºC 572508 Hrs 511768 Hrs 248881 Hrs
40 ºC 388615 Hrs 344869 Hrs 165992 Hrs
60 ºC 268016 Hrs 237025 Hrs 113839 Hrs
80 ºC 186666 Hrs 165178 Hrs 79883 Hrs
100 ºC 130030 Hrs 115636 Hrs 56976 Hrs
MTBF Calculations - Single Outputs
Temperature / Environment Ground Mobile - GM Airbourne Inhabited Cargo - AIC Airbourne Inhabited Fighter - AIF
20 ºC 559576 Hrs 537722 Hrs 288094 Hrs
40 ºC 372929 Hrs 364801 Hrs 193225 Hrs
60 ºC 247825 Hrs 247508 Hrs 131394 Hrs
80 ºC 163916 Hrs 167263 Hrs 90213 Hrs
100 ºC 107298 Hrs 111652 Hrs 62208 Hrs
MTBF Calculations - Dual Outputs
+3
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Remote Sensing - Single Output Models Only
Current or Power Limit Point
Iout
Vout
105-150%
of nominal Iout
40-70%
of nominal
Vout
Trip Point
Load
R lead
R lead
+Vout
-Vout
+Sense
-Sense
Power Supply
Figure 1. Overload Protection
Notes.
1. To use the remote sense connect +Sense pin to +Vout and -Sense pin to -Vout.
2. When remote sense is not in use leave pins not connected or connected locally to ±Vout.
MTC3028SXX has overload protection. After reaching the
limit between 105% to 150% of Inom (current or power
limit point) it will reduce the output voltage protecting the
converter from overheating. When Vout nom is in the range
of 40% to 70% the power will drop to 0 (trip point). The
unit will attempt to restart after 700ms typical.
MTC3028DXX has overload protection similar to the single
outputs when both outputs are loaded symmetrically. In
addition, each output also has an individual current limit
between 105% to 150% of Imax to protect applications
with non-symmetrical loads.
Overload Protection
Figure 2. MTC30 - Remote Sense Connection Diagram
v I:
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Voltage Trim - Single Output Models Only
Converter
Converter
TRIM UP TRIM DOWN
Rx
-Sense
25
17
Adj.
Rx
+Sense
18
17
Adj.
Rx (kΩ)
Vout (V)
3.0
3.2
3.4
3.6
3.8
4.0
4.2
1101001000
Max
Vnom
Limit max
Figure 3. MTC30 - Trim connections Figure 4. MTC3028S3V3 - Max and Min Adjustment
Vout (V)
Rx (kΩ)
3.5
4.5
5.0
5.5
6.0
6.5
10 1001000
Max
Min
Vnom
Limit max
Limit min
Figure 5. MTC3028S05 - Max and Min Adjustment
Rx (kΩ)
Vout (V)
8.5
9.0
9.5
10.0
10.5
11.0
11.5
12.0
12.5
13.0
13.5
14.0
1101001000
Max
Min
Vnom
Limit max
Limit min
V
Figure 6. MTC3028S12 - Max and Min Adjustment
Rx (kΩ)
Vout (V)
10
11
12
13
14
15
16
17
18
1101001000
Max
Min
Vnom
Limit max
Limit min
Figure 7. MTC3028S15 - Max and Min Adjustment
Rx (kΩ)
Vout (V)
19
20
21
22
23
24
25
26
27
28
29
30
31
1101001000
Max
Min
Vnom
Limit max
Limit min
Figure 8. MTC3028S28 - Max and Min Adjustment
Notes.
1. When adjusting the output voltage do not go above the max. output voltage limit (refer to tables) as the overvoltage protection may be triggered when fitted.
2. When adjusting the output voltage do not go below the specified voltage range (refer to tables) as input and output characteristics can not be guaranteed.
3. When not in use leave Adj. pin not-connected.
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EMC Filter Connection Diagram
MTF50 MTC3028Sxx
+Vin (6) +Vout (9) +Vin (6) +Vout
(19,20)
RL
-Vin (4)
Y Cap (3)
Case (2)
-Vout (11) -Vin (4)
Case (2)
-Vout
(21,22)
Figure 11. MTC30 - EMC Filter connection diagram
EMC Performance Curve Examples
Figure 9. MTC3028S12 without a filter
Figure 10. MTC3028S12 with MTF50 filter
O I + o N 3— . a | I . . ’I : .— _. O R O o + o '—' Supply Converter 1 Ad] - - -|:| - -' 07 _ . . ' I I Load R L 0 + o '—‘ » K 3. Converter E, 2 Ad] : _ _ _E _ _ A _. - o W O S
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Parallel Configuration - Single Output Models Only
Converter
2
+
-
Converter
1
+
-
Supply
Load
+Sense
+Sense
C
Figure 12. Parallel configuration suitable for redundant operation
Converter
2
+
-
Converter
1
+
-
Supply
Load
Adj
R
R
Adj
Figure 13. Parallel configuration for current sharing
Notes.
1. Up to 3 converters to share within 80% max power;
2. To calculate the resistor (R) for the current sharing use the formula: R=(Vout nom (V) x output set tolerance (%))/(Iout nom (A) x current share (%)), e.g.
MTC3028S05 will be: R=(5V x 4%)/(5A x 50%)=800mΩ
3. The adjust pin can be used to tune Vout to achieve max of 1% tolerance which helps to achieve better current sharing and keeps the resistor (R) value lower.
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Start Up Time
Efficiency
Figure 17. Start up time for MTC3028S05 with full resistive load - 34 ms Figure 18. Start up time for MTC3028S05 at full load
and 1500 µF - 45 ms
Figure 19. Start up time for MTC3028S15 with full resistive load - 46 ms Figure 20. Start up time for MTC3028S15 at full load
and 700 µF - 47 ms
0
10
20
30
40
50
60
70
80
90
100
20 40 60 80 100
Iout %
E
Vin = 15.5 V
Vin = 28.0 V
Vin = 40.0 V
Efficiency%
0
10
20
30
40
50
60
70
80
90
100
20 40 60 80 100
Iout %
Efficiency %
Vin = 15.5 V
Vin = 28.0 V
Vin = 40.0 V
Figure 14. Typical efficiency for MTC3028S05 Figure 15. Typical efficiency for MTC3028S28
Iout %
I
Efficiency%
Vin = 15.5 V
Vin = 28.0 V
Vin = 40.0 V
50
60
70
80
90
100
25/25% 50/50% 80/20% 20/80%
Figure 16. Typical efficiency for MTC3028D15
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Dual Output Cross Regulation
MTC3028D12
Output voltage over minimum load
Iout1=constant nominal load (0.62A); Iout2=variable
MTC3028D12
Output voltage over minimum load
Iout1=constant nominal load (1.25A); Iout2=variable
10.000
10.500
11.000
11.500
12.000
12.500
13.000
13.500
14.000
0.00 0.10 0.20 0.30 0.40 0.50 0.60
Iout2 [A]
Vout2@Vin=15.5V
Vout2@Vin=28V
Vout2@Vin=40V
Vout1@Vin=15.5V
Vout1@Vin=28V
Vout1@Vin=40V
10.000
10.500
11.000
11.500
12.000
12.500
13.000
13.500
14.000
0.00 0.20 0.40 0.60 0.80 1.00
Iout2 [A]
MTC3028D12
Output voltage over minimum load
Iout1=constant nominal load (2.0A); Iout2=variable
MTC3028D15
Output voltage over minimum load
Iout1=constant nominal load (0.5A); Iout2=variable
MTC3028D15
Output voltage over minimum load
Iout1=constant nominal load (1.0A); Iout2=variable
MTC3028D15
Output voltage over minimum load
Iout1=constant nominal load (1.6A); Iout2=variable
Vout2@Vin=15.5V
Vout2@Vin=28V
Vout2@Vin=40V
Vout1@Vin=15.5V
Vout1@Vin=28V
Vout1@Vin=40V
10.000
10.500
11.000
11.500
12.000
12.500
13.000
13.500
14.000
0.00 0.05 0.10 0.15 0.20 0.25 0.30
Iout2 [A]
Vout2@Vin=15.5V
Vout2@Vin=28V
Vout2@Vin=40V
Vout1@Vin=15.5V
Vout1@Vin=28V
Vout1@Vin=40V
12.500
13.000
13.500
14.000
14.500
15.000
15.500
16.000
16.500
17.000
17.500
0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35
Iout2 [A]
Vout2@Vin=15.5V
Vout2@Vin=28V
Vout2@Vin=40V
Vout1@Vin=15.5V
Vout1@Vin=28V
Vout1@Vin=40V
12.500
13.000
13.500
14.000
14.500
15.000
15.500
16.000
16.500
17.000
0.00 0.10 0.20 0.30 0.40 0.50
Iout2 [A]
Vout2@Vin=15.5V
Vout2@Vin=28V
Vout2@Vin=40V
Vout1@Vin=15.5V
Vout1@Vin=28V
Vout1@Vin=40V
13.000
13.500
14.000
14.500
15.000
15.500
16.000
16.500
17.000
0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70
Iout2 [A]
Vout [V] Vout [V] Vout [V]
Vout [V] Vout [V] Vout [V]
Vout2@Vin=15.5V
Vout2@Vin=28V
Vout2@Vin=40V
Vout1@Vin=15.5V
Vout1@Vin=28V
Vout1@Vin=40V
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Mechanical Details
2.283±0.012(58.0±0.3)
0.500+0.020
(12.7+0.5 )
2.000 (50.8)
1.984 (50.4)
1.512 (38.4)
0.1 (2.54)
0.150 (3.8)
0.177(4.5)
1
13
26
14
0.142±0.008
(3.6±0.2)
0.154±0.008
(3.9±0.2)
1.811±0.012
(46.0±0.3)
-0.3
-0.012
Bottom View
MTC30 Connections
Pin Single Output Dual Output
1 No Pin No Pin
2 Case Case
3 No Pin No Pin
4 - Vin - Vin
5 No Pin No Pin
6 + Vin + Vin
7 No Pin No Pin
8 Synchronisation Synchronisation
9 No Pin No Pin
10 Inhibit Inhibit
11 No Pin No Pin
12 Thermal Warning (TW) Thermal Warning (TW)
13 Signal GND (SGND) No Pin
14 No Pin No Pin
15 No Pin No Pin
16 No Pin No Pin
17 Adjust No Pin
18 + Sense No Pin
19 + Vout + Vout
20 + Vout + Vout
21 - Vout (COM) COM
22 - Vout (COM) COM
23 No Pin - Vout
24 No Pin - Vout
25 - Sense No Pin
26 No Pin No Pin
Notes.
1. Dimensions are in inches (mm)
2. Tolerance: ±0.02 inches (±0.5 mm)
3. Weight: 0.15 lb (70 g)
4. Materials & Finish:
Pin - Diameter: 0.032 (0.8)
Material: Cu Zn30 2.5 µm Ni
Finish: 0.2-0.5 µm AU (HV 170-200)
Mounting Hole - Diameter: 0.102 (2.6)
Case - Material: Aluminium (Al Mg Si 0.5)
Finish: Chromated
Nameplate - Non-conductive plastic
Soldering.
Wave soldering: 260 ºC max for 10 s
Soldering gun: 450 º C max for 5 s
Nam. Amman Hr: North American Sales umees Dlsmhulurs m
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North American HQ
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Web : www.xppowerchina.com /
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North American Sales Offices
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Distributors
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Americas .................. Newark element14 newark.com
Asia .......................................element14 sg.element14.com
Europe .......................Farnell element14 farnell.com
Worldwide ................................ Digi-Key digikey.com

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