MURATA-PS MTU1

MTU1 Series
www.murata-ps.com
Isolated 1W Single Output SM DC/DC Converters
Single isolated output
%
7.3
6.1
5.6
5.3
5.6
3.9
3.5
3.2
9
7.5
7.5
6.5
8
6
6
5
mVp-p
35
60
15
25
15
25
15
25
20
40
15
25
10
25
10
25
Efficiency (Min.)
Input Current at
Full Load
mA
%
%
pF
kHrs
241
233
230
230
99
96
95
95
80
83
84
84
80
82
83
84
83
86
87
87
84
87
88
88
19
20
21
22
22
31
40
35
5664
5488
5186
4773
5641
5467
5165
4753
MTTF2
Ripple & Noise
(Max.)3
Ripple & Noise
(Typ.)3
200
111
83
67
200
111
83
67
Load Regulation
(Max)
mA
5
9
12
15
5
9
12
15
Load Regulation
(Typ.)
V
5
5
5
5
12
12
12
12
Isolation
Capacitance
Footprint over pins 0.69cm2
V
Efficiency (Typ.)
Patent Pending
Output
Voltage
FEATURES
MTU1S0505MC
MTU1S0509MC
MTU1S0512MC
MTU1S0515MC
MTU1S1205MC
MTU1S1209MC
MTU1S1212MC
MTU1S1215MC
Nominal Input
Voltage
Order Code1
Output Current
SELECTION GUIDE
1kVDC Isolation
Efficiency up to 88% (Typ.)
MSL Level 1
INPUT CHARACTERISTICS
Parameter
Voltage range
Power density 1.71W/cm3
Wide temperature performance at full
1 Watt load, –40°C to 85°C
UL 94V-0 Package material
5V & 12V Input
5V, 9V, 12V & 15V output
Toroidal magnetics
Custom solutions available
Multi-layer ceramic capacitors
PRODUCT OVERVIEW
The MTU1 series is a new range of miniature
surface mount, high performance 1W DC/DC
converters. With a footprint reduction of over 50%
from the previous generation of 1W SMD DC/DC,
the MTU1 series offers 1W of available output
power over the full industrial temperature range of
-40ºC to 85ºC. The MTU1 series is more efficient
and offers improved regulation performance for
applications where a wide output voltage variation
can not be tolerated.
The devices are suitable for all applications where
high volume production is envisaged.
Reflected ripple current
Min.
Typ.
Max.
Units
4.5
10.8
5.0
12.0
6
5
5.5
13.2
V
Typ.
Max.
mA p-p
ISOLATION CHARACTERISTICS
Parameter
Conditions
Min.
Isolation voltage
Resistance
Flash tested for 1 second
Viso= 1000VDC
1000
10
Units
VDC
GΩ
GENERAL CHARACTERISTICS
Parameter
Conditions
Switching frequency
5V input types
12 input types
Min.
Typ.
Max.
82
90
Units
kHz
ABSOLUTE MAXIMUM RATINGS
Input voltage VIN, MTU1S05 types
Input voltage VIN, MTU1S12 types
7V
15V
OUTPUT CHARACTERISTICS
Parameter
Conditions
Rated power
TA=-40°C to 85°C
See tolerance envelope
High VIN to low VIN
Voltage set point accuracy
Line regulation
Min.
Typ.
Max.
Units
1.0
W
1.0
1.1
%/%
Typ.
Max.
Units
TEMPERATURE CHARACTERISTICS
Parameter
Conditions
Min.
Specification
Storage
All output types
-40
-55
Case temperature rise
above ambient4
Cooling
Conditions
Continuous operation, 5V input types
Continuous operation, 12V input types
5V input types
12V input types
85
125
°C
12
All types
Free air convection
1. If components are required in tape and reel format suffix order code with -R, e.g. MTU10505MC-R.
2. Calculated using MIL-HDBK-217 FN2 calculation model with nominal input voltage at full load.
3. See ripple & noise characterisation method.
4. Measured after 1 hour continuous operation at nominal VIN full load at the center of each PCB.
All specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified.
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com
Technical enquiries email: [email protected], tel: +44 (0)1908 615232
2011-02-01
KDC_MTU.A03 Page 1 of 6
MTU1 Series
Isolated 1W Single Output SM DC/DC Converters
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 MTU1 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?”
For a part holding no specific agency approvals, such as the MTU1 series, 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 MTU1 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.
TEMPERATURE DERATING GRAPH
TOLERANCE ENVELOPES
5V output types
0
-40
Safe Operating Area
100
50
0
Ambient Temperature (°C)
150
1.5%
VNOM
10
0%
25
50
75
Output Load Current (%)
-4%
100
Output Voltage
85°C
Output Voltage
Output Power (W)
0.5
5%
5.5%
1.5
1.0
All other types
1%
0%
VNOM
10
25
75
50
-4%
100
Output Load Current (%)
The voltage tolerance envelope shows typical load regulation characteristics for this product series. The tolerance
envelope is the maximum output voltage variation due to changes in output loading.
RoHS COMPLIANCE INFORMATION
This series is compatible with RoHS soldering systems with a peak reflow solder temperature of 245ºC as per J-STD-020D.
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/JEDEC STD-020D.
The product series passed electrical tests and visual inspection criteria.
For further information, please visit: www.murata-ps.com/rohs
1. Measured on centre of input side PCB.
www.murata-ps.com
Technical enquiries email: [email protected], tel: +44 (0)1908 615232
2011-02-01
KDC_MTU.A03 Page 2 of 6
MTU1 Series
Isolated 1W Single 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.
MTU1S0505MC
MTU1S0509MC
MTU1S0512MC
MTU1S0515MC
MTU1S1205MC
MTU1S1209MC
MTU1S1212MC
MTU1S1215MC
Typical Start-Up Wave Form
Start-up time
ms
0.9
2.7
4.3
7.5
0.9
1.9
3.3
4.7
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
www.murata-ps.com
Technical enquiries email: [email protected], tel: +44 (0)1908 615232
2011-02-01
KDC_MTU.A03 Page 3 of 6
MTU1 Series
Isolated 1W Single 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.
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
DC
Power
Source
Inductor
SMD
L, μH
MTU1S0505MC
MTU1S0509MC
MTU1S0512MC
MTU1S0515MC
MTU1S1205MC
MTU1S1209MC
MTU1S1212MC
MTU1S1215MC
Load
C
DC
Through Hole
Capacitor
C, μF
TBD
EFFICIENCY VS LOAD
MTU1S05xxMC
MTUS12xxMC
90
90
80
80
15V
12V
9V
5V
60
50
70
Efficiency (%)
Efficiency (%)
70
40
30
15V
12V
9V
5V
60
50
40
30
20
20
10
10
0
0
0
10
20
30
www.murata-ps.com
40
50
60
Load (%)
70
80
90
100
0
10
20
30
40
50
60
Load (%)
70
80
90
100
Technical enquiries email: [email protected], tel: +44 (0)1908 615232
2011-02-01
KDC_MTU.A03 Page 4 of 6
MTU1 Series
Isolated 1W Single Output SM DC/DC Converters
PACKAGE SPECIFICATIONS
MECHANICAL DIMENSIONS - Patent Pending
PIN CONNECTIONS
8.20 (0.323)
2.54 (0.100)
4
6
5
Function
1
+VIN
3
-VIN
4
+VOUT
5
OV
6
NC
3
1
1.56 (0.061)
Pin
5.08 (0.200)
8.40±0.45 (0.331±0.018)
+0.000
8.50 +0.00
-0.20 ( 0.335-0.008 )
S
0.35 (0.014)
(Typ.)
0.25±0.1
(0.01)
0.60±0.1
(0.024)
x5 PINS
c 0.10 (0.004) S
SEATING
PLANE
1.80±0.2 (0.071)
1.80±0.2 (0.071)
All dimensions in mm ±0.25mm (inches ±0.01). All pins on a 2.54 (0.1) pitch and within 0.25 (0.01) of true position.
Weight: 0.75g
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)
www.murata-ps.com
2.60 (0.102)
Unless otherwise stated all dimensions in mm±0.25mm (inches).
Tube length: 520mm ±2.00
Tube Quantity: 60
Technical enquiries email: [email protected], tel: +44 (0)1908 615232
2011-02-01
KDC_MTU.A03 Page 5 of 6
MTU1 Series
Isolated 1W Single 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
MTU1S
0509
XWWYY
MTU1S
0509
XWWYY
MTU1S
0509
TRAILER SECTION
160 (6.30) MIN
GOODS
ENCLOSURE
SECTION
CARRIER TAPE START
100 (3.94) MIN
LEADER SECTION
400 (15.75) MIN
Product Orientation
Pin 1, located nearest to
carrier drive sprocket.
Reel Quantity: 300 pcs.
Murata Power Solutions, Inc.
11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A.
ISO 9001 and 14001 REGISTERED
www.murata-ps.com/locations
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.
© 2011 Murata Power Solutions, Inc.
Technical enquiries email: [email protected], tel: +44 (0)1908 615232
2011-02-01
KDC_MTU.A03 Page 6 of 6