MURATA NTH1212MC

NTH Series
www.murata-ps.com
Isolated 2W Dual Output SM DC/DC Converters
SELECTION GUIDE
Nominal
Input
Voltage
V
1
Order Code
FEATURES
„
RoHS compliant
„
Efficiency up to 84%
„
Wide temperature performance at full
2 Watt load, –40°C to 85°C
„
UL 94V-0 Package material
„
Lead frame technology
„
5V & 12V Input
NTH0505MC
NTH0509MC
NTH0512MC
NTH0515MC
NTH1205MC
NTH1209MC
NTH1212MC
NTH1215MC
V
mA
Input
Current at
Rated Load
mA
±5
±9
±12
±15
±5
±9
±12
±15
±200
±111
±83
±67
±200
±111
±83
±67
500
494
488
476
208
201
198
198
Output
Voltage
5
5
5
5
12
12
12
12
Output
Current
Parameter
Voltage range
Reflected ripple current
Typ.
Max.
Units
5
12
40
30
5.5
13.2
V
Typ.
Max.
Units
W
1.0
5.0
3.0
150
100
80
70
2.0
7.5
5.0
1.2
10
10
200
150
150
150
Max.
Conditions
Rated power 3
TA=-40°C to 85°C
NTHXX05, 10% to 100% load
All other variants, 10% to 100% load
High VIN to low VIN
10% load to rated load, 5V output types
10% load to rated load, all other output types
BW=DC to 20MHz, 5V output types
BW=DC to 20MHz, 9V output types
BW=DC to 20MHz, 12V output types
BW=DC to 20MHz, 15V output types
„
Multi layer ceramic capacitors
2175
913
465
257
675
472
315
204
4.5
10.8
Parameter
„
Custom solutions available
kHrs
27
34
39
37
35
57
66
63
Min.
„
Dual isolated output
„
No heatsink required
pF
Conditions
OUTPUT CHARACTERISTICS
„
Power density 1.61W/cm3
%
80
81
82
84
80
83
84
84
Continuous operation, 5V input types
Continuous operation, 12V input types
5V input types
12V input types
„
Internal SMD construction
„
MTTF up to 2.17 million hours
Isolation
MTTF2
Capacitance
INPUT CHARACTERISTICS
„
5V, 9V, 12V & 15V Output
„
1kVDC Isolation
Efficiency
Voltage set point
accuracy
Line regulation
2
Load regulation
Ripple & noise
Min.
-5.0
-5.0
DESCRIPTION
ISOLATION CHARACTERISTICS
The NTH series of miniature surface mounted
DC/DC converters employ leadframe technology and transfer moulding techniques to bring
all of the benefits of IC style packaging to hybrid circuitry. The component lead termination
of this product range is lead-free compatible,
therefore the converter can be soldered in a
lead-free soldering process. Co-planarity of the
lead positions is based upon IEC 191-6:1990.
The devices are suitable for all applications
where high volume production is envisaged.
Parameter
Conditions
Min.
Typ.
Isolation test voltage
Resistance
Flash tested for 1 second
Viso= 500VDC
1000
1
10
Min.
Typ.
mA p-p
%
%/%
%
mV p-p
Units
VDC
GΩ
GENERAL CHARACTERISTICS
Parameter
Conditions
Switching frequency
All 5V input types
All 12V input types
95
90
Max.
Units
kHz
ABSOLUTE MAXIMUM RATINGS
Lead temperature 1.5mm from case for 10 seconds
Internal power dissipation
Input voltage VIN, NTH05 types
Input voltage VIN, NTH12 types
300°C
550mW
7V
15V
1. If components are required in tape and reel format suffix order code code with -R, e.g. NTH0505MC-R.
2. Calculated using MIL-HDBK-217F with nominal input voltage at full load.
3. See derating graph.
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/support
KDC_NTH.C02 Page 1 of 6
NTH Series
Isolated 2W Dual Output SM DC/DC Converters
TEMPERATURE CHARACTERISTICS
Parameter
Conditions
Min.
Specification
Storage
All output types
-40
-55
Case temperature rise above
ambient
Cooling
5V output types
All other output types
Free air convection
Typica
l
°C
+5%
Load
Line
+2.5%
-1.25%
75
50
25
Output Load Current (%)
-5.0%
100
Output Voltage
Output Voltage
Units
85
125
All other output types
0%
10
Max.
30
25
TOLERANCE ENVELOPE
5V output types
+7.5%
+3.75%
Typ.
Typical L
o
+2.0%
ad Line
+1.5%
-1.5%
-2.0%
10
75
50
25
Output Load Current (%)
-5.0%
100
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
TEMPERATURE DERATING GRAPH
Output Power (W)
3.0
This series is compatible with RoHS soldering
systems with a peak reflow solder temperature
of 245ºC and time above liquidus of 217ºC
for 60 seconds. The pin termination finish on
this product series is Gold, plating thickness
0.1 microns minimum. The series is backward
compatible with Sn/Pb soldering systems.
2.0
1.0
0
-40
For further information, please visit www.murata-ps.com/rohs
85°C
Safe Operating Area
100
50
0
Ambient Temperature (°C)
150
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 NTH 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 NTH 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 NTH 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.
www.murata-ps.com/support
KDC_NTH.C02 Page 2 of 6
NTH Series
Isolated 2W 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.
NTH0505MC
NTH0509MC
NTH0512MC
NTH0515MC
NTH1205MC
NTH1209MC
NTH1212MC
NTH1215MC
Typical Start-Up Wave Form
Start-up time
μs
1026
3625
5750
8330
691
2645
3285
6120
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/support
KDC_NTH.C02 Page 3 of 6
NTH Series
Isolated 2W 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.
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
NTH0505MC
NTH0509MC
NTH0512MC
NTH0515MC
NTH1205MC
NTH1209MC
NTH1212MC
NTH1215MC
L, μH
10
22
47
220
10
22
47
220
Inductor
SMD
82103C
82223C
82473C
82474C
82103C
82223C
82473C
82474C
C
Load
DC
Through Hole
11R103C
11R223C
11R473C
11R474C
11R103C
11R223C
11R473C
11R474C
Capacitor
C, μF
4.7
2.2
1
0.22
4.7
2.2
1
0.22
www.murata-ps.com/support
KDC_NTH.C02 Page 4 of 6
NTH Series
Isolated 2W Dual Output SM DC/DC Converters
PACKAGE SPECIFICATIONS
MECHANICAL DIMENSIONS
PIN CONNECTIONS
0.700 (17.78)
0.600 (15.24)
0.710 (18.03) 0.690 (17.53)
26 24
22
18
16
14
DETAIL A
0.500 (12.70)
REFERENCE PLANE
0.020 (0.50)
NTH0505MC
x12 PINS
0.0416-0.0534 (1.0565-1.3565)
0.008 (0.2)
XYYWW
1
3
5
9
±5.0°
11
S
13
12 PINS
0.029 (0.74) 0.025 (0.64)
0.008 (0.2)
0.100 (2.54)
S
0.226 (5.75) 0.207 (5.25)
2.74 (0.108) MAX
Function
1
3
5
9
11
-VIN
+VIN
NA
-VOUT
OV
13
+VOUT
14
16
18
22
24
26
NA
NA
-VOUT
NC
NA
NA
NA - Not available for electrical connection.
NC - No internal electrical connection.-
DETAIL A
0.108 (2.75)
5.35 (0.236)
6.00 (0.211)
Pin
S
SEATING PLANE
0.010 (0.25)
0.004 (0.10)
All dimensions in inches ±0.01 (mm ±0.25mm). All pins on a 0.1 (2.54) pitch.
0.012 (0.30)
0.008 (0.20)
Weight: 2.75g
TUBE OUTLINE DIMENSIONS
RECOMMENDED FOOTPRINT DETAILS
All dimensions in inches ±0.02 (mm±0.5)
.*/
œ
œ
x12 PINS
0.004 (0.1)
S
0.06 (1.52) MAX
All dimensions in inches ±0.02 (mm±0.5).
Tube length : 18.70±0.079 (475±2.0).
Tube Quantity : 25
www.murata-ps.com/support
KDC_NTH.C02 Page 5 of 6
NTH Series
Isolated 2W Dual Output SM DC/DC Converters
TAPE & REEL SPECIFICATIONS
TAPE OUTLINE DIMENSIONS
COVER TAPE
0.722 (18.33)
0.024 (0.60) MAX
0.726 (18.43)
0.945 (24.00)
0.394 (10.00)
Ø0.079 (Ø2.00) MIN
0.157 (4.00)
0.079 (2.00)
 ."9
NTH0505MC
1.260±0.012 (32.00±0.30)
All dimensions in inches ±0.02 (mm±0.5)
0.234 (5.95)
0.262 (6.65)
1.118 (28.40)
0.008±0.002 (0.20±0.05)
0.559 (14.20)
+0.002
+0.05
R0.030 -0.000 (R0.75 -0.00 )
XYYWW
0.069 (1.75)
"5)6#4&$5*0/
 .*/
DIRECTION OF UNREELING
+0.004
+0.10
Ø1.50 -0.00 (Ø0.059 -0.000 )
."9
±0.002 (0.05)
REEL OUTLINE DIMENSIONS
All dimensions in inches ±0.02 (mm±0.5)
REEL PACKAGING DETAILS
Reel Quantity : 400
Murata Power Solutions, Inc.
11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A.
ISO 9001 and 14001 REGISTERED
XYYWW
All dimensions in inches ±0.02 (mm±0.5)
NTH0505MC
XYYWW
NTH0505MC
XYYWW
NTH0505MC
TRAILER SECTION
6.30 (160) MIN
GOODS ENCLOSURE
SECTION
CARRIER TAPE START
3.94 (100) MIN
LEADER SECTION
15.75 (400) MIN
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.
© 2012 Murata Power Solutions, Inc.
www.murata-ps.com/support
KDC_NTH.C02 Page 6 of 6