MTU2 Series - power, Murata

MTU2 Series
www.murata-ps.com
Isolated 2W Single & Dual Output SM DC/DC Converters
„
Footprint over pins 0.69cm2
„
Single & dual isolated output
„
1kVDC Isolation “Hi Pot Test”
Parameter
Voltage range
„
Power density 3.403W/cm3
The devices are suitable for all applications where
high volume production is envisaged.
For full details go to
www.murata-ps.com/rohs
Efficiency (Min.)
Input Current at
Full Load
pF
kHrs
15
17
18
20
21
19
19
24
2650
2763
3060
2207
2314
2898
2697
2452
MTTF2
Ripple & Noise
(Max.)3
%
79
82
85
80
80
82
85
83
Min.
Typ.
Max.
Units
3.3
5.0
12.0
24
10
3.63
5.5
13.2
26.4
V
Typ.
Max.
ISOLATION CHARACTERISTICS
The MTU2 series is a new range of miniature surface mount, high performance 2W DC/DC converters. With a footprint reduction of over 50% from
the previous generations of 2W SMD DC/DC, the
MTU2 series offers 2W of available output power
over a wide temperature range. The MTU2 series
is more efficient and offers improved regulation
performance for applications where a wide output
voltage variation can not be tolerated. The MTU2
series is pin compatible with the MTU2 series.
%
74
78
79
72
73
77
79
77
2.97
4.5
10.8
21.6
„
5V,12V & 24V single & dual outputs
PRODUCT OVERVIEW
mA
740
480
460
200
100
480
460
190
Continuous operation, 3.3V input types
Continuous operation, 5V input types
Continuous operation, 12V input types
Continuous operation, 24V input types
All variants
Reflected ripple current
„
Multi-layer ceramic capacitors
mVp-p
53
75
47
65
14
30
40
60
30
50
30
55
15
35
15
35
Conditions
„
3.3V, 5V, 12V & 24V Input
„
Custom solutions available
15
12
11
10
10
13
11
8
INPUT CHARACTERISTICS
„
Efficiency up to 85% (Typ.)
„
MSL Level 1
%
12.5
9.5
9
7.5
8
10.5
8.5
6.5
Ripple & Noise
(Typ.)3
400
400
83
400
400
±200
±83
±83
Load Regulation
(Max)
mA
5
5
24
5
5
±5
±12
±12
Load Regulation
(Typ.)
V
Isolation
Capacitance
„
UL 60950 Recognised
V
3.3
5
5
12
24
5
5
12
Efficiency (Typ.)
„
Patent Protected
Output
Voltage
FEATURES
MTU2S0305MC
MTU2S0505MC
MTU2S0524MC
MTU2S1205MC
MTU2S2405MC
MTU2D0505MC
MTU2D0512MC
MTU2D1212MC
Nominal Input
Voltage
Order Code1
Output Current
SELECTION GUIDE
Parameter
Conditions
Min.
Isolation voltage
Resistance
Flash tested for 1 minute
Viso= 1000VDC
1000
10
mA p-p
Units
VDC
GΩ
OUTPUT CHARACTERISTICS
Parameter
Conditions
Rated power
Voltage set point accuracy
TA=-40°C to 85°C
See tolerance envelope
Line regulation
High VIN to low VIN
Min.
MTU2S0305MC
All other variants
Typ.
Max.
Units
2.0
W
1.0
1.0
1.3
1.2
%/%
Typ.
Max.
Units
GENERAL CHARACTERISTICS
Parameter
Switching frequency
Conditions
Min.
MTU2D0505MC
50
All other variants
70
kHz
ABSOLUTE MAXIMUM RATINGS
Input voltage VIN, MTU2S03 types
Input voltage VIN, MTU2S05 types
Input voltage VIN, MTU2S12 types
Input voltage VIN, MTU2S24 types
5.5V
7V
15V
28V
1. If components are required in tape and reel format suffix order code with -R, e.g. MTU20505MC-R.
2. Calculated using MIL-HDBK-217 FN2 calculation model with nominal input voltage at full load.
3. See ripple & noise characterisation method.
All specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified.
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KDC_MTU2.C02 Page 1 of 9
MTU2 Series
Isolated 2W Single & Dual Output SM DC/DC Converters
TEMPERATURE CHARACTERISTICS
Parameter
Conditions
Min.
Specification
Storage
All output types
-40
-50
Case temperature rise above ambient1
Cooling
0305, 1205, 2405
All other variants
Free air convection
Typ.
Max.
Units
30
25
85
125
45
35
°C
1 . Measured after 1 hour continuous operation at nominal VIN full load at the center of each PCB.
TECHNICAL NOTES
ISOLATION VOLTAGE
‘Hi Pot Test’, ‘Flash Tested’, ‘Withstand Voltage’, ‘Proof Voltage’, ‘Dielectric Withstand Voltage’ & ‘Isolation Test Voltage’ are all terms that relate to the same thing, a test voltage,
applied for a specified time, across a component designed to provide electrical isolation,
to verify the integrity of that isolation.
Murata Power Solutions MTU2 series of DC/DC converters are all 100% production tested
at their stated isolation voltage. This is 1kVDC for 1 second.
A question commonly asked is, “What is the continuous voltage that can be applied
across the part in normal operation?”
The MTU2 has been recognized by Underwriters Laboratory for functional insulation, both
input and output should normally be maintained within SELV limits i.e. less than 42.4V
peak, or 60VDC. The isolation test voltage represents a measure of immunity to transient
voltages and the part should never be used as an element of a safety isolation system.
The part could be expected to function correctly with several hundred volts offset applied
continuously across the isolation barrier; but then the circuitry on both sides of the barrier must be regarded as operating at an unsafe voltage and further isolation/insulation
systems must form a barrier between these circuits and any user-accessible circuitry
according to safety standard requirements.
REPEATED HIGH-VOLTAGE ISOLATION TESTING
It is well known that repeated high-voltage isolation testing of a barrier component can
actually degrade isolation capability, to a lesser or greater degree depending on materials, construction and environment. The MTU2 series has toroidal isolation transformers,
with no additional insulation between primary and secondary windings of enameled
wire. While parts can be expected to withstand several times the stated test voltage,
the isolation capability does depend on the wire insulation. Any material, including this
enamel (typically polyurethane) is susceptible to eventual chemical degradation when
subject to very high applied voltages thus implying that the number of tests should be
strictly limited. We therefore strongly advise against repeated high voltage isolation testing, but if it is absolutely required, that the voltage be reduced by 20% from specified
test voltage.
This consideration equally applies to agency recognized parts rated for better than functional isolation where the wire enamel insulation is always supplemented by a further
insulation system of physical spacing or barriers.
SAFETY APPROVAL
The MTU2 series has been recognized by Underwriters Laboratory (UL) to UL 60950 for functional insulation to a maximum product PCB temperature of 120°C. Forced air cooling
may be used to maintain this temperature requirement. File number E151252 applies.
The MTU2 Series of converters are not internally fused so to meet the requirements of UL 60950 an anti-surge input line fuse should always be used with ratings as defined below.
MTU2S03xxxC: 1.5A
MTU2S05xxxC: 0.63A
MTU2S12xxxC: 0.3A
MTU2S24xxxC: 0.25A
All fuses should be UL approved and rated to at least the maximum allowable DC input voltage.
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KDC_MTU2.C02 Page 2 of 9
MTU2 Series
Isolated 2W Single & Dual Output SM DC/DC Converters
RoHS COMPLIANCE INFORMATION
This series is compatible with RoHS soldering systems with a peak reflow solder temperature of 245ºC as per J-STD-020D.1.
The pin termination finish on this product series is Matte Tin over Nickel Preplate. The series is backward compatible with Sn/Pb soldering systems.
The series has a Moisture Sensitivity Level (MSL) 1.
Samples of the product series were tested in accordance with the conditioning described for MSL level 1 in IPS/J-STD-020D.1.
The product series passed electrical tests and visual inspection criteria.
For further information, please visit: www.murata-ps.com/rohs
TOLERANCE ENVELOPES
The voltage tolerance envelopes show typical load regulation characteristics for this product series. The tolerance envelope is the maximum output voltage variation due to
changes in output loading and set point accuracy.
8.9%
2.5%
1.5%
MTU2D0505MC, MTU2S0505MC & MTU2S1205MC
Output Voltage
Output Voltage
MTU2D1212MC, MTU2S2405MC & MTU2D0512MC
10.2%
4%
1.8%
-3.9%
10
25
50
75
-4.4%
100
10
25
Output Load Current (%)
13.7%
Output Voltage
100
MTU2S0524MC
5.7%
2.2%
Output Voltage
MTU2S0305MC
50
75
Output Load Current (%)
9.4%
4%
0.4%
-5.1%
10
25
50
75
Output Load Current (%)
-7.6%
100
10
25
75
50
Output Load Current (%)
100
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KDC_MTU2.C02 Page 3 of 9
MTU2 Series
Isolated 2W Single & Dual Output SM DC/DC Converters
APPLICATION NOTES
Minimum load
The minimum load to meet datasheet specification is 10% of the full rated load across the specified input voltage range. Lower than 10% minimum loading will result in
an increase in output voltage, which may rise to typically double the specified output voltage if the output load falls to less than 5%.
Capacitive loading and start up
Typical start up times for this series, with a typical input voltage rise time of 2.2μs and output capacitance of 10μF, are shown in the table below. The product
series will start into a capacitance of 47μF with an increased start time, however, the maximum recommended output capacitance is 10μF.
MTU2S0305MC
MTU2S0505MC
MTU2S0524MC
MTU2S1205MC
MTU2S2405MC
MTU2D0505MC
MTU2D0512MC
MTU2D1212MC
Typical Start-Up Wave Form
Start-up time
μs
225
165
3900
90
90
200
880
390
Ripple & Noise Characterisation Method
Ripple and noise measurements are performed with the following test configuration.
C1
1μF X7R multilayer ceramic capacitor, voltage rating to be a minimum of 3 times the output voltage of the DC/DC converter
10μF tantalum capacitor, voltage rating to be a minimum of 1.5 times the output voltage of the DC/DC converter with an ESR of less
C2
than 100mΩ at 100 kHz
C3
100nF multilayer ceramic capacitor, general purpose
R1
450Ω resistor, carbon film, ±1% tolerance
R2
50Ω BNC termination
T1
3T of the coax cable through a ferrite toroid
RLOAD
Resistive load to the maximum power rating of the DC/DC converter. Connections should be made via twisted wires
Measured values are multiplied by 10 to obtain the specified values.
Differential Mode Noise Test Schematic
DC/DC Converter
OSCILLOSCOPE
C1 C2 C3
+
SUPPLY
Input
-
+
R1
T1
R2
Y INPUT
Output
-
R LOAD
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KDC_MTU2.C02 Page 4 of 9
MTU2 Series
Isolated 2W Single & Dual Output SM DC/DC Converters
APPLICATION NOTES CONTINUED
Output Ripple Reduction
By using the values of inductance and capacitance stated, the output ripple at the
rated load is lowered to 5mV p-p max.
MTU2S0305MC
MTU2S0505MC
MTU2S0524MC
MTU2S1205MC
MTU2S2405MC
MTU2D0505MC
MTU2D0512MC
MTU2D1212MC
Component selection
Capacitor: It is required that the ESR (Equivalent Series Resistance) should be
as low as possible, ceramic types are recommended. The voltage rating should
be at least twice (except for 15V output), the rated output voltage of the DC/DC
converter.
Inductor: The rated current of the inductor should not be less than that of the
output of the DC/DC converter. At the rated current, the DC resistance of the
inductor should be such that the voltage drop across the inductor is <2% of the
rated voltage of the DC/DC converter. The SRF (Self Resonant Frequency) should
be >20MHz.
L, μH
4.7
4.7
47
4.7
4.7
4.7
47
47
Inductor
SMD
82472C
82472C
82473C
82472C
82472C
82472C
82473C
82473C
Through Hole
11R472C
11R472C
11R473C
11R472C
11R472C
11R472C
11R473C
11R473C
Capacitor
C, μF
22
22
4.7
22
10
22
4.7
4.7
L
Power
Source
DC
C
Load
DC
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KDC_MTU2.C02 Page 5 of 9
MTU2 Series
Isolated 2W Single & Dual Output SM DC/DC Converters
EFFICIENCY VS LOAD
3.3V INPUT
5V INPUT
90
90
80
80
70
70
60
Efficiency (%)
Efficiency (%)
60
50
40
MTU2D0505MC
50
MTU2D0512MC
MTU2S0505MC
40
MTU2S0524MC
30
30
20
20
10
10
0
0
10
20
30
40
50
0
0
10
20
30
40
50
60
70
80
90
60
70
80
90
100
Load (%)
100
Load (%)
12V INPUT
24V INPUT
90
90
80
80
70
70
60
50
MTU2S1205MC
40
MTU2D1212MC
Efficiency (%)
Efficiency (%)
60
50
40
30
30
20
20
10
10
0
0
10
20
30
40
50
60
Load (%)
70
80
90
100
0
0
10
20
30
40
50
60
70
80
90
100
Load (%)
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KDC_MTU2.C02 Page 6 of 9
MTU2 Series
Isolated 2W Single & Dual Output SM DC/DC Converters
TEMPERATURE DERATING
MTU2S0305MC
MTU2S0505MC
100
100
95
99
90
85
Load (%)
Load (%)
98
80
75
97
70
96
65
60
95
55
45
45
50
55
60
65
70
75
80
50
55
85
60
65
70
75
80
85
Ambient Temperature OC
Ambient Temperature OC
MTU2S0524MC
MTU2S1205MC
100
100
90
95
70
Load (%)
Load (%)
80
90
60
50
85
40
80
30
45
50
55
60
65
70
75
80
85
45
50
55
Ambient Temperature OC
60
65
70
75
80
85
Ambient Temperature OC
MTU2S2405MC
MTU2D0505MC
100
100
95
90
98
85
80
96
Load (%)
Load (%)
75
70
65
94
60
55
50
92
45
40
90
35
45
50
55
60
65
70
75
80
45
85
50
55
60
65
70
75
80
85
75
80
85
Ambient Temperature OC
Ambient Temperature OC
MTU2D0512MC
MTU2D1212MC
80
90
60
80
Load (%)
100
Load (%)
100
40
70
20
60
0
50
45
50
55
60
65
70
Ambient Temperature OC
75
80
85
45
50
55
60
65
70
Ambient Temperature OC
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KDC_MTU2.C02 Page 7 of 9
MTU2 Series
Isolated 2W Single & Dual Output SM DC/DC Converters
PACKAGE SPECIFICATIONS
MECHANICAL DIMENSIONS
PIN CONNECTIONS
2.54±0.10 [0.100±0.004]
6
4
5
Pin
Single Output Types
Function
1
3
4
5
6
1.56 [0.061]
3
1
Pin
+VIN
-VIN
NC
OV
+VOUT
Dual Output Types
Function
1
3
4
5
6
5.08±0.10 [0.200±0.004]
8.20 [0.323]
8.40±0.45 [0.331±0.018]
+VIN
-VIN
-VOUT
OV
+VOUT
8.50 MAX [0.335]
S
(0.35 [0.014])
SEATING PLANE
0.25 [0.010]
0.60 [0.024]
x5 PINS
0.10 [0.004]
1.80±0.20 [0.071±0.008]
1.80±0.20 [0.071±0.008]
S
All dimensions in mm (inches) ±0.05mm (0.002”). Controlling dimension is mm. All pins on a 2.54mm (0.100”) pitch.
Weight: 0.79g, typ.
TUBE OUTLINE DIMENSIONS
RECOMMENDED FOOTPRINT DETAILS
6.50 (0.256)
12.25 (0.482) MAX
2.54 (0.100)
2.54 (0.100)
0.75±0.15 (0.030±0.006)
12.25 (0.482) MAX
1.00 (0.039)
2.60 (0.102)
Unless otherwise stated all dimensions in mm±0.25mm (inches).
Tube length: 520mm ±2.00
Tube Quantity: 60
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KDC_MTU2.C02 Page 8 of 9
MTU2 Series
Isolated 2W Single & Dual Output SM DC/DC Converters
TAPE & REEL SPECIFICATIONS
REEL OUTLINE DIMENSIONS
TAPE OUTLINE DIMENSIONS
330
(12.99) MAX
8.70±0.1
(0.343)
0.50±0.05 (0.020)
DIRECTION OF UNREELING
100
Ø (3.94) MIN
2.00(+0.08)
(AT HUB SECTION)
24.40 (0.96)
-0.00 (0.00)
+0.004
01.50 +0.10
-0.00 (00.059-0.000)
13.00±0.25
Ø (0.51±0.009)
30.40 (1.20) MAX
2.00±0.1 (0.079)
16.00±0.10 (0.630)
8.50±0.1 (0.335)
4.00±0.1 (0.157)
1.75±0.1
(0.069)
9.00±0.1
11.50±0.1
(0.453)
24.00±0.30 (0.945±0.012)
REEL PACKAGING DETAILS
XWWYY
MTU2S
0505
XWWYY
Product Orientation
Pin 1, located nearest to
carrier drive sprocket.
MTU2S
0505
XWWYY
MTU2S
0505
TRAILER SECTION
160 (6.30) MIN
GOODS
ENCLOSURE
SECTION
CARRIER TAPE START
100 (3.94) MIN
LEADER SECTION
400 (15.75) MIN
Reel Quantity: 400 pcs.
Murata Power Solutions, Inc.
11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A.
ISO 9001 and 14001 REGISTERED
This product is subject to the following operating requirements
and the Life and Safety Critical Application Sales Policy:
Refer to: http://www.murata-ps.com/requirements/
Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other
technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply
the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without
notice.
© 2015 Murata Power Solutions, Inc.
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KDC_MTU2.C02 Page 9 of 9