NKE1205DC [MURATA]
Isolated Sub-Miniature 1W Single Output DC/DC Converters; 孤立的超小型1W单输出DC / DC转换器
| 型号： | NKE1205DC |
| 厂家： | 
muRata |
| 描述： | Isolated Sub-Miniature 1W Single Output DC/DC Converters |
| 文件： | 总7页 (文件大小：226K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
NKE Series
s
Isolated Sub-Miniature 1W Single Output DC/DC Converters
SELECTION GUIDE
Nominal
Input
Current at
Rated Load
Output
Voltage Current
Output
Isolation
Capacitance
Input
Efficiency
%
MTTF1
kHrs
Package
Style
Voltage
Order Code
V
V
mA
mA
pF
Min.
Typ.
72
75
74
72
75
74
74
69
77
75
78
78
74
69
77
75
78
78
72
78
79
81
72
78
79
81
NKE0303DC
NKE0305DC
NKE0309DC
NKE0303SC
NKE0305SC
NKE0309SC
NKE0503DC
NKE0505DC
NKE0505DEC
NKE0509DC
NKE0512DC
NKE0515DC
NKE0503SC
NKE0505SC
NKE0505SEC
NKE0509SC
NKE0512SC
NKE0515SC
NKE1205DC
NKE1209DC
NKE1212DC
NKE1215DC
NKE1205SC
NKE1209SC
NKE1212SC
NKE1215SC
3.3
3.3
3.3
3.3
3.3
3.3
5
3.3
5
303
200
111
303
200
111
303
200
200
111
83
400
400
403
400
400
403
270
289
250
266
260
256
270
289
250
266
260
256
117
107
105
103
117
107
105
103
68
72
71
68
72
71
70
66
75
72
73
74
70
66
75
72
73
74
68
72
73
76
68
72
73
76
30
35
30
30
35
30
40
28
34
29
30
32
40
28
34
29
30
32
35
50
57
60
35
50
57
60
1234
632
DIP
SIP
9
1204
1234
632
FEATURES
3.3
5
ꢀRoHS Compliant
9
1204
619
ꢀSub-Miniature SIP & DIP Styles
ꢀ3kVDC Isolation
3.3
5
5
2414
419
5
5
ꢀUL Recognised
DIP
SIP
5
9
1173
633
ꢀWide Temperature performance at full
5
12
15
3.3
5
1 Watt load, –40°C to 85°C
5
66
360
ꢀIncreased Power Density to 2.09W/cm3
ꢀUL 94V-0 Package Material
ꢀFootprint at 0.69cm2
5
303
200
200
111
83
619
5
2414
419
5
5
5
9
1173
633
5
12
15
5
ꢀIndustry Standard Pinout
5
66
360
ꢀ3.3V, 5V & 12V Input
12
12
12
12
12
12
12
12
200
111
83
620
9
488
ꢀ3.3V, 5V, 9V, 12V and 15V Output
ꢀInternal SMD Construction
DIP
SIP
12
15
5
360
66
252
200
111
83
620
ꢀFully Encapsulated with Toroidal
9
488
Magnetics
12
15
360
ꢀMTTF up to 2.4 Million hours
ꢀCustom Solutions Available
66
252
NKE0505SEC/NKE0505DEC offers higher efficiency than NKE0505SC/NKE0505DC but over a narrower operating temperature range.
See temperature characteristics graph.
ꢀNo Electrolytic or Tantalum Capacitors
INPUT CHARACTERISTICS
Parameter
Conditions
Min.
2.97
4.5
Typ.
3.3
Max.
3.63
5.5
Units
V
PRODUCT OVERVIEW
Continuous operation, 3.3V input types
Continuous operation, 5V input types
Continuous operation, 12V input types
3.3V input types
The NKE sub-miniature series of DC/DC Converters
is particularly suited to isolating and/or converting
DC power rails. A smaller package size, improved
efficiency, lower output ripple and 3kVDC isolation
capability through state of the art packaging and
improved technology. The galvanic isolation allows
the device to be configured to provide an isolated
negative rail in systems where only positive rails
exist. The wide temperature range guarantees
startup from –40°C and full 1 watt output at 85°C.
Voltage range
5.0
10.8
12.0
40
13.2
60
Reflected ripple current
mA p-p
ABSOLUTE MAXIMUM RATINGS
Lead temperature 1.5mm from case for 10 seconds
Internal power dissipation
300°C
530mW
5.5V
Input voltage VIN, NKE03 types
Input voltage VIN, NKE05 types
7V
Input voltage VIN, NKE12 types
15V
1. Calculated using MIL-HDBK-217F with nominal input voltage at full load.
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_NKE.K03 Page 1 of 7
NKE Series
Isolated Sub-Miniature 1W Single Output DC/DC Converters
OUTPUT CHARACTERISTICS
Parameter
Rated Power
Conditions
TA=-40°C to 120°C, see derating graphs
See tolerance envelope
Min.
Typ.
Max.
1.0
Units
W
Voltage Set Point Accuracy
Line regulation
High VIN to low VIN
1.0
10
12
7.5
6.5
6.0
40
77
43
35
32
1.2
15
%/%
%
10% load to rated load, 3.3V output types & 0309
10% load to rated load, 5V output types
10% load to rated load, 9V output types
10% load to rated load, 12V output types
10% load to rated load, 15V output types
BW=DC to 20MHz, 3.3V output types & 0305, 0505SEC, 0505DEC
BW=DC to 20MHz, other 5V output types
BW=DC to 20MHz, 9V output types
BW=DC to 20MHz, 12V output types
BW=DC to 20MHz, 15V output types
15
Load Regulation1
Ripple and Noise
10
9.5
8.5
80
100
90
mV p-p
65
55
ISOLATION CHARACTERISTICS
Parameter
Isolation test voltage
Resistance
Conditions
Flash tested for 1 second
Viso= 1000VDC
Min.
3000
Typ.
10
Max.
Max.
Units
VDC
GΩ
GENERAL CHARACTERISTICS
Parameter
Switching frequency
Conditions
All output types
Min.
Typ.
115
Units
kHz
TEMPERATURE CHARACTERISTICS
Parameter
Specification
Storage
Conditions
All output types
Min.
-40
Typ.
Max.
85
Units
°C
-50
130
41
0505D/S, 1205D/S
All other output types
Free air convection
Case temperature rise above
ambient
32
Cooling
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 NKE series of dc/dc converters are all 100% production tested at their stated isolation voltage. This is 1000V DC for 1 second.
A question commonly asked is, “What is the continuous voltage that can be applied across the part in normal operation?”
The NKE series 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 sys-
tem. 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 materi-
als, construction and environment. While manufactured parts can 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.
SAFETY APPROVAL
The NKE series has been recognised by Underwriters Laboratory (UL) to UL 60950 for functional insulation in a maximum ambient temperature of 85ºC and/or case temperature
limit of 130ºC. Case temperature measured on the face opposite the pins. File number E179522 applies.
1. 12V input types have typically 3% less load regulation.
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KDC_NKE.K03 Page 2 of 7
NKE Series
Isolated Sub-Miniature 1W Single Output DC/DC Converters
TEMPERATURE DERATING GRAPHS
NKE 0303DC/SC, 0305DC/
SC, 0309DC/SC, 0503DC/SC,
0505DEC/SEC types only.
1.5
1.5
1.0
All other types.
85°C
85°C
1.0
0.5 Safe Operating Area
0.5 Safe Operating Area
UL recognition to a
maximum ambient
temperature of 85ºC and/
or case temperature limit of
130ºC.
120°C
150
0
0
-40
100
150
0
50
-40
100
0
50
Ambient Temperature (°C)
Ambient Temperature (°C)
TOLERANCE ENVELOPES
All other types.
3.3V output types.
+9%
+10%
+5%
VNOM
+2.5%
+1%
VNOM
+1%
-7%
-2.5%
-7.5%
-7%
-15%
100
75
Output Load Current (%)
100
10 25
50
75
Output Load Current (%)
10 25
50
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.
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KDC_NKE.K03 Page 3 of 7
NKE Series
Isolated Sub-Miniature 1W Single Output 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.
Typical Start-Up Wave Form
Start-up time
μs
Start-up time
μs
NKE0303SC
NKE0305SC
NKE0309SC
NKE0503SC
NKE0505SC
NKE0505SEC
NKE0509SC
544
NKE0512SC
NKE0515SC
NKE1205SC
NKE1209SC
NKE1212SC
NKE1215SC
5040
1306
5250
496
9940
1671
2835
1075
894
5295
8475
3140
Ripple & Noise Characterisation Method
Ripple and noise measurements are performed with the following test configuration.
C1
C2
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
than 100mꢀ at 100 kHz
C3
R1
100nF multilayer ceramic capacitor, general purpose
450ꢀ resistor, carbon film, 1% tolerance
R2
50ꢀ 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
Y INPUT
R2
C1 C2 C3
R1
T1
+
+
Input
Output
SUPPLY
-
-
R LOAD
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KDC_NKE.K03 Page 4 of 7
NKE Series
Isolated Sub-Miniature 1W Single Output 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
Load
C
DC
Inductor
SMD
Capacitor
L, μH
10
Through Hole
11R103C
11R473C
11R473C
11R103C
11R473C
11R473C
11R473C
11R683C
11R104C
11R473C
11R473C
11R683C
11R104C
C, μF
4.7μF
4.7μF
1μF
NKE0303xC
NKE0305xC
NKE0309xC
NKE0503xC
NKE0505xC
NKE0505xEC
NKE0509SC
NKE0512xC
NKE0515xC
NKE1205xC
NKE1209xC
NKE1212xC
NKE1215xC
82103C
82473C
82473C
82103C
82473C
82473C
82473C
82683C
82104C
82473C
82473C
82683C
82104C
47
47
10
4.7μF
4.7μF
4.7μF
1μF
47
47
47
68
0.68μF
2.2μF
4.7μF
1μF
100
47
47
68
0.47μF
2.2μF
100
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KDC_NKE.K03 Page 5 of 7
NKE Series
Isolated Sub-Miniature 1W Single Output DC/DC Converters
PACKAGE SPECIFICATIONS
MECHANICAL DIMENSIONS
DIP Package
PIN CONNECTIONS - 8 PIN DIP
SIP Package
Pin
1
Function
-VIN
0.45
(11.48)
4
+VIN
0.386 (9.80)
5
+VOUT
-VOUT
0.236
(6.00)
NKE0505DC
7
XYYWW
PIN CONNECTIONS - 4 PIN SIP
0.453 (11.50)
Pin
1
Function
-VIN
0.212 (5.40)
0.293
(7.46)
NKE0505SC
0.022 (0.55)
0.018 (0.45)
2
+VIN
XYYWW
0.181 (4.60)
0.142 (3.60)
3
-VOUT
1
2
3
4
4
+VOUT
0.0196 0.00196
(0.50 0.05)
0.181 (4.60)
0.142 (3.60)
0.0196 0.00196
(0.50 0.05)
0.1 (2.54)
0.086 0.0197
(2.18 0.50)
1
4
5
0.043 (1.09)
0.0118 (0.30)
0.0078 (0.20)
0.3 (7.62)
0.049
(1.25)
7
0.0118 (0.30)
0.0078 (0.20)
0.2 (5.08)
0.3 (7.62)
0.3
(7.62)
0.0763 (1.94)
All dimensions in inches 0.01 (mm 0.25mm). All pins on a 0.1 (2.54) pitch and within 0.01 (0.25) of true position.
Weight: 1.09g (SIP) 1.25g (DIP)
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KDC_NKE.K03 Page 6 of 7
NKE Series
Isolated Sub-Miniature 1W Single Output DC/DC Converters
PACKAGE SPECIFICATIONS (continued)
RECOMMENDED FOOTPRINT DETAILS
8 Pin DIP Package
4 Pin SIP Package
ꢇꢃ)0-&4
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TUBE OUTLINE DIMENSIONS
4 Pin SIP Tube
8 Pin DIP Tube
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Unless otherwise stated all dimensions in inches (mm) 0.5mm.
Tube length (8 Pin DIP) : 20.47 (520mm 2mm).
Tube length (4 Pin SIP) : 20.67 (525mm 2mm).
ꢀꢁꢂꢋꢆꢃꢄꢇꢁꢇꢆꢈꢃ
Tube Quantity : 40
RoHS COMPLIANCE INFORMATION
This series is compatible with RoHS soldering systems with a peak wave solder temperature of 300°C for 10 seconds. The pin termination finish
on the SIP package type is Tin Plate, Hot Dipped over Matte Tin with Nickel Preplate. The DIP types are Matte Tin over Nickel Preplate. Both
types in this series are backward compatible with Sn/Pb soldering systems.
For further information, please visit www.murata-ps.com/rohs
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.
11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A.
ISO 9001 and 14001 REGISTERED
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.
© 2013 Murata Power Solutions, Inc.
www.murata-ps.com/support
KDC_NKE.K03 Page 7 of 7
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