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NDL1209SC PDF даташит

Спецификация NDL1209SC изготовлена ​​​​«Murata» и имеет функцию, называемую «Isolated 2W Wide Input Single Output DC/DC Converters».

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Номер произв NDL1209SC
Описание Isolated 2W Wide Input Single Output DC/DC Converters
Производители Murata
логотип Murata логотип 

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NDL1209SC Даташит, Описание, Даташиты
www.murata-ps.com
NDL Series
Isolated 2W Wide Input Single Output DC/DC Converters
FEATURES
„RoHS compliant
„2:1 wide range voltage input
„Continuous short circuit protection with
current foldback
„Operating temperature range -40ºC to 85ºC
„0.75% regulation
„1kVDC Isolation
„Efficiency to 83%
„Power density 0.9W/cm3
„5V, 12V, 24V & 48V nominal input
„5V, 9V, 12V & 15V output
„No electrolytic capacitors
„Fully encapsulated
„External control
„Low noise
„Fully encapsulated
DESCRIPTION
The NDL series is a range of high performance
miniature DC/DC converters having regulated out-
puts over the wide temperature range of -40ºC to
85ºC. The input voltage range is 2:1 with the output
power at 2 watts and the input to output isola-
tion is 1kVDC. Continuous short circuit protection,
external control and extremely small SIP packaging
provide state of the art functionality. Nominal input
voltages of 5, 12, 24 and 48V with output voltages
of 5,9,12 and 15V are available as standard with
custom parts on request. The plastic case is rated
to UL94V-0 with encapsulant to UL94V-1.
SELECTION GUIDE
Order Code
Input
Voltage
Output Current 1 Input Current 2
Rated Output
Voltage
Min Load 3 Full Load Full Load
NDL0505SC
NDL0509SC
NDL0512SC
NDL0515SC
NDL1205SC
NDL1209SC
NDL1212SC
NDL1215SC
NDL2405SC
NDL2409SC
NDL2412SC
NDL2415SC
NDL4805SC
NDL4809SC
NDL4812SC
NDL4815SC
V (nom.)
5
5
5
5
12
12
12
12
24
24
24
24
48
48
48
48
V
5
9
12
15
5
9
12
15
5
9
12
15
5
9
12
15
mA mA
100 400
55 222
42 167
33 134
100 400
55 222
42 167
33 134
100 400
55 222
42 167
33 134
100 400
55 222
42 167
33 134
mA %
606 66
558 71
559 71
549 73
228 73
211 79
208 80
206 81
112 74
102 81
100 83
100 83
57 73
52 80
51 81
51 82
pF
26
27
26
27
39
38
47
47
37
40
51
58
39
40
53
65
INPUT CHARACTERISTICS
Parameter
Conditions
All NDL05 types
Voltage range
All NDL12 types
All NDL24 types
All NDL48 types
All NDL05 types with 100μF at input
Reflected ripple
All NDL12 types with 100μF at input
current
All NDL24 types with 10μF at input
All NDL48 types with 10μF at input
Min. Typ. Max.
4.5 5
9
9 12 18
18 24 36
36 48 72
250
150
300 380
140 170
ABSOLUTE MAXIMUM RATINGS
Short-circuit protection
Lead temperature 1.5mm from case for 10 seconds
Control pin input current
Input voltage 05 types
Input voltage 12 types
Input voltage 24 types
Input voltage 48 types
Continuous
300°C
15mA
10V
20V
40V
80V
1. Refer to power derating graph for operating of 5V input types at 4.5 to 6V.
2. Measured at full load with external input/output capacitors.
3. Please refer to minimum load application notes section on page 3.
4. 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.
MTTF 4
kHrs
2015
1998
1980
1965
1994
1981
1961
1947
1722
1711
1696
1685
1719
1709
1694
1683
Units
VDC
mA p-p
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com/support
KDC_NDL.F05 Page 1 of 4









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NDL1209SC Даташит, Описание, Даташиты
NDL Series
Isolated 2W Wide Input Single Output DC/DC Converters
OUTPUT CHARACTERISTICS
Parameter
Voltage set point accuracy
Line regulation
Load regulation
Ripple
Noise
Shutdown power
Conditions 1
All NDL05/12 input types with external input/output capacitors
All NDL24/48 input types with external input/output capacitors
All NDL05/12 input types, low line to high line with external input/output capacitors
All NDL24/48 input types, low line to high line with external input/output capacitors
All NDL05/12 input types, minimum load to rated load with external input/output capacitors
All NDL24/48 input types, minimum load to rated load with external input/output capacitors
B/W = 20MHz to 300kHz with external input/output capacitors
All NDL05 input types, B/W =DC to 20MHz with external input/output capacitors
All NDL12 input types, B/W =DC to 20MHz with external input/output capacitors
All NDL24/48 input types, B/W =DC to 20MHz with external input/output capacitors
+VIN nominal
Typ.
±1
±2
0.05
0.04
0.2
0.2
5
50
110
50
2.8
Max. Units
±3
%
±5
0.5
%
0.4
0.75
%
0.75
10 mV rms
100
170 mV p-p
100
mW
ISOLATION CHARACTERISTICS
Parameter
Isolation test voltage
Resistance
Conditions
Flash tested for 1 second
VISO = 1000VDC
Min. Typ. Max. Units
1000
VDC
1 GΩ
GENERAL CHARACTERISTICS
Parameter
Control pin (CTRL) input current
Switching frequency
Conditions
Please refer to control pin application note
Max. rated load to Min. rated load, VIN Min. to VIN. Max.
Min. Typ. Max. Units
6 10 15 mA
100 600 kHz
TEMPERATURE CHARACTERISTICS
Parameter
Operation
Storage
Cooling
Conditions
Free air convection
Min. Typ. Max. Units
-40 85
ºC
-50 130
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 NDL 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 NDL 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 NDL series has an EI 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 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.
1. Refer to recommended test circuit for external input/output capacitors.
www.murata-ps.com/support
KDC_NDL.F05 Page 2 of 4









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NDL1209SC Даташит, Описание, Даташиты
NDL Series
Isolated 2W Wide Input Single Output DC/DC Converters
APPLICATION NOTES
External capacitance
Although these converters will work without external capacitors, they are necessary
in order to guarantee the full parametric performance over the full line and load
range. All parts have been tested and characterized using the following values and
test circuit.
Input Voltage (V)
5 & 12
24 & 48
Test circuit
Supply + V
IN
+V
IN
+V
OUT
Supply - V
IN
CIN
NDL
-V
IN
- VOUT
Value
CIN
100μF, 25V
10μF, 200V
COUT
COUT
100μF, 25V
100μF, 25V
Control Pin
The NDL converters have a shutdown feature which enables the user to put the converter into a low power state. The control pin connects directly to the base of an internal
transistor, and the switch off mechanism for the NDL works by forward biasing this NPN transistor. If the pin is left open (high impedance), the converter will be ON (there is
no allowed low state for this pin), but once a control voltage is applied with sufficient drive current, the converter will be switched OFF. A suitable application circuit is shown
below.
V
IN
V
C
R
1
OV
NDL
D
1 CTRL
R
2
Q
1
D (e.g. 1N4001) is required to provide high impedence when the signal is
1
low. From the NDL specification, the drive current to operate this function
is recommended to be 10mA, and hence the value of R can be derived as
1
follows:
V -V -V
R= C D Q
1 IC
-V Assuming V =5V, V =0.7V and V =1V:
IN
CD
Q
R = 5 - 0.7 - 1.0 = 330Ω
1 10 x 10-3
Pin 8 (CS)
This pin provides a connection point to the main reservoir capacitor. Additional capacitance can be added from this pin to pin 7. Any lower ESR capacitor will remove ripple
and noise to some degree. The benefit of this access point over simple additional output capacitance is that it precedes the output filter inductor. Maximum values of external
capacitance will be dependent on the output voltage, the loading of the converter and the desired ripple figure. Values can be up to 100μF.
Minimum load
The minimum load for correct operation is 25% of the full rated load across the specified input voltage range. Lower loads may cause a significant increase in output ripple
and may cause the output voltage to exceed its specification transiently during power-down when the input voltage also falls below its rated minimum.
RoHS COMPLIANT INFORMATION
This series is compatible with RoHS soldering
systems with a peak wave solder temperature of
300ºC for 10 seconds. The pin termination finish
on this product series is Tin Plate, Hot Dipped
over Matte Tin with 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/support
NDL05 POWER DERATING CURVE
2.5
2.0
1.75
1.5
1.0
0.5
0
4.5 5
67
8
Isolation voltage (V)
9
KDC_NDL.F05 Page 3 of 4










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