DC/DC Converters. NCS12D4812C Datasheet

NCS12D4812C Converters. Datasheet pdf. Equivalent


Murata NCS12D4812C
www.murata-ps.com
NCS12 Series
Isolated 12W 4:1 Input Single & Dual Output DC/DC Converters
FEATURES
„UL 60950 recognition pending
„4:1 Wide range voltage input
„Operating temperature range -40°C to 85°C
„Typical load regulation from 0.05%
„1.5kVDC Isolation ‘Hi Pot Test’
„3.3V, 5V, 12V & 15V outputs
„UL 94V-0 Package materials
„No electrolytic capacitors
„Thermal shutdown
„Under voltage lock out
„Current fold back
PRODUCT OVERVIEW
The NCS12 series of DC/DC converters offers
single & dual output voltages from input voltage
ranges of 9-36V and 18-75V. The NCS12 is
housed in an industry standard package with
a standard pinout. The NCS12 is packaged in a
metal case for improved EMI shielding and is also
encapsulated for superior thermal performance.
Applications include telecommunications, battery
powered systems, process control and distributed
power systems.
For full details go to
www.murata-ps.com/rohs
SELECTION GUIDE
Order Code
NCS12S1203C
NCS12S1205C
NCS12S1212C
NCS12S1215C
NCS12S4803C
NCS12S4805C
NCS12S4812C
NCS12S4815C
NCS12D1205C
NCS12D1212C
NCS12D1215C
NCS12D4805C
NCS12D4812C
NCS12D4815C
Input
Voltage
Nom.
V
12
12
12
12
48
48
48
48
12
12
12
48
48
48
Output
Voltage
V
3.3
5
12
15
3.3
5
12
15
±5
±12
±15
±5
±12
±15
Output
Current
A
3.64
2.40
1.00
0.80
3.64
2.40
1.00
0.80
±1.2
±0.5
±0.4
±1.2
±0.5
±0.4
Load Regulation
Positive Negative Positive Negative
Output Output Output Output
Typical
Max
% %%
1 1.5
0.5 1
0.1 0.3
0.1 0.3
1.2 2
0.5 1
0.1 0.3
0.1 0.3
0.15 0.3 0.3
2
0.05 0.2 0.3 1.5
0.05 0.1 0.3 1.5
0.15 0.5 0.3
2
0.05 0.4 0.3 1.5
0.05 0.4 0.3 1.5
Efficiency MTTF1
Min. Typ.
% % Hrs
78 83.5 269,492
84 88 313,578
83 84.5 230,569
83 85.5 195,596
81 85.5 341,943
84 87.5 418,117
82 84.5 296,593
84 85 259,485
80 81.5 182,655
83 85 158,750
84 86 140,435
78 80 165,931
83 85 215,533
83 85 146,257
SELECTION GUIDE (Continued)
Order Code
NCS12S1203C
NCS12S1205C
NCS12S1212C
NCS12S1215C
NCS12S4803C
NCS12S4805C
NCS12S4812C
NCS12S4815C
NCS12D1205C
NCS12D1212C
NCS12D1215C
NCS12D4805C
NCS12D4812C
NCS12D4815C
10% Load
Typ. 12/48V
A
0.15
0.1
0.1
0.06
0.05
0.05
0.03
0.03
0.04
0.04
0.05
0.03
0.03
0.03
Input Current
10% Load
Typ. 24V
A
0.1
0.16
0.06
0.1
0.08
0.08
0.06
0.06
0.07
0.07
0.07
0.07
0.07
0.07
100% Load
Typ. 12/48V
A
1.2
1.1
1.2
1.2
0.3
0.3
0.3
0.3
1.25
1.2
1.5
0.3
0.3
0.4
Ripple and Noise
Typ.
mVp/p
60
50
80
100
100
90
75
90
35
40
55
70
84
55
Max
mVp/p
125
125
125
125
125
125
125
125
100
100
100
100
100
100
INPUT CHARACTERISTICS
Parameter
Conditions
Voltage range
12V input types
48V input types
Turn on threshold 12V input types
Under voltage lock out
Turn off threshold 12V input types
Turn on threshold 48V input types
Turn off threshold 48V input types
Power consumption at NCS12X12
shutdown
NCS12X48
Reflected ripple current
48V dual output types
All other types
Min. Typ.
9 24
18 48
8.5
7.5
16.7
15.8
10
100
15
10
1 Calculated using MIL-HDBK-217 FN2, parts stress method with nominal input voltage at full load.
All specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified.
Max.
36
75
Units
V
V
mW
mA p-p
www.murata-ps.com
All enquiries: www.murata-ps.com/support
KDC_NCS12C.B01 Page 1 of 14


NCS12D4812C Datasheet
Recommendation NCS12D4812C Datasheet
Part NCS12D4812C
Description DC/DC Converters
Feature NCS12D4812C; www.murata-ps.com NCS12 Series Isolated 12W 4:1 Input Single & Dual Output DC/DC Converters FEATUR.
Manufacture Murata
Datasheet
Download NCS12D4812C Datasheet




Murata NCS12D4812C
NCS12 Series
Isolated 12W 4:1 Input Single & Dual Output DC/DC Converters
OUTPUT CHARACTERISTICS
Parameter
Conditions
Rated power
All output types
Minimal load to meet datasheet specification
Positive outputs
Voltage set point accuracy
Negative outputs
Line regulation
Low line to high line
Positive outputs
Negative outputs
Cross Regulation
D1205 & D4805
D1212, D1215 ,D4812, D4815
Peak deviation (12.5-37.5% & 37.5-12.5% swing)
Transient response
Settling time
(within 1% Vout Nom.)
Single output types
Dual output types
ISOLATION CHARACTERISTICS
Parameter
Conditions
Isolation test voltage
Flash tested for 1 seconds
Resistance
Viso = 1kVDC
Capacitance
S1203, S1205, S4803, S4805
All other types
Min.
1500
1
ABSOLUTE MAXIMUM RATINGS
Short-circuit protection (for SELV input voltages)
Control pin input voltage
Lead temperature 1.0mm from case for 10 seconds (to JEDEC JESD22-B106 ISS C)
Input voltage, NCS12 12V input types
Input voltage, NCS12 48V input types
Min.
10
Typ.
0.04
0.3
±4
±2
500
250
Typ.
600
230
Max. Units
12 W
%
±2
±3 %
0.1
%
1
±6.5
%
±5
5 %Vout
μs
Max. Units
VDC
pF
30 minutes
18V Max
260°C
40V
80V
GENERAL CHARACTERISTICS1
Parameter
Switching frequency
Control pin input
TEMPERATURE CHARACTERISTICS
Parameter
Operation
Storage
Case temperature above ambient
Thermal shutdown
Conditions
S1203, S1205, S4803 & S4805
All other types
Module on, pin unconnected or open collector floating
Module off
Min. Typ. Max. Units
340
kHz
220
0.8 V
Conditions
With derating - see derating graph
100% Load, Nom VIN,
Still Air
Case Temperature
NCS12S1203C
NCS12S1215C, NCS12D1205C, NCS12D4805C
All other types
Single 3.3V & 5V outputs
All other types
Min. Typ. Max. Units
-40 85
-50 125
65
60 °C
44
135
120
www.murata-ps.com
All enquiries: www.murata-ps.com/support
KDC_NCS12C.B01 Page 2 of 14



Murata NCS12D4812C
NCS12 Series
Isolated 12W 4:1 Input Single & Dual Output DC/DC Converters
APPLICATION NOTES
Output Capacitance and start-up times
The NCS12 series does not require output capacitors to meet datasheet specification. To meet datasheet specification, total output capacitance should not exceed:
Part No.
NCS12S1203C
NCS12S1205C
NCS12S1212C
NCS12S1215C
NCS12S4803C
NCS12S4805C
NCS12S4812C
NCS12S4815C
NCS12D1205C
NCS12D1212C
NCS12D1215C
NCS12D4805C
NCS12D4812C
NCS12D4815C
Maximun Load Capacitance (per output)
μF
470
470
220
220
470
470
220
220
220
100
100
220
100
100
Start-up times
ms
16
22
7
8.5
14
22
8
8.5
5
8
9
5
7.5
7
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 specifi ed time, across a component designed to provide electrical isolation, to verify the integrity of that isolation.
Murata Power Solutions NCS12 series of DC/DC converters are all 100% production tested at their stated isolation voltage. This is 1.5kVDC 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 specifi c agency approvals, such as the NCS12 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 NCS12 series has an ER ferrite core, 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 polyure-
thane) 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 specifi ed 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.
RoHS COMPLIANCE INFORMATION
This series is compatible with RoHS soldering systems with a peak wave solder temperature of 260ºC for 10 seconds. The pin termination finish
on this product series is a Gold flash (0.05-0.10 micron) over Nickel Preplate. The series is backward compatible with Sn/Pb soldering systems.
For further information, please visit www.murata-ps.com/rohs
www.murata-ps.com
All enquiries: www.murata-ps.com/support
KDC_NCS12C.B01 Page 3 of 14





@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)