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Murata Manufacturing Electronic Components Datasheet

NDY0505C Datasheet

Isolated 3W Wide Input DC/DC Converters

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NDY0505C pdf
www.murata-ps.com
NDY Series
Isolated 3W Wide Input DC/DC Converters
FEATURES
„UL 60950 recognized
„RoHS compliant
„Industry standard footprint
„Efficiency to 82%
„Power density 0.90W/cm3
„2:1 wide input range
„Single isolated output
„Short circuit protection
„Low profile 24 pin case
„UL 94V-0 package material
„Operating temperature range -40ºC to 85ºC
„No heatsink required
„Footprint 4.73cm2
„5V, 12V, 24V & 48V input
„3.3V, 5V, 9V, 12V & 15V output
„Internal SMD construction
„Fully encapsulated
DESCRIPTION
The NDY series is a range of low profile DC/DC
converters offering a single regulated output over a
2:1 input voltage range. All parts deliver 3W output
power up to 85ºC without heatsinking, except the
4.5V to 9V input voltage range which should be
derated to 2W at the lower input voltage. A flyback
oscillator design with isolated feedback is used to
give regulation over the full operating range of 25%
to 100% of full load. It is strongly recommended
that external capacitors be used on input and
output to guarantee performance over full load and
input voltage range.
SELECTION GUIDE
Order Code
Nominal
Input
Voltage
V (nom.)
NDY0505C
5
NDY0509C
5
NDY0512C
5
NDY0515C
5
NDY1205C
12
NDY1209C
12
NDY1212C
12
NDY1215C
12
NDY2403C
24
NDY2405C
24
NDY2409C
24
NDY2412C
24
NDY2415C
24
NDY4803C
48
NDY4805C
48
NDY4809C
48
NDY4812C
48
NDY4815C
48
Rated
Output
Voltage
V
5
9
12
15
5
9
12
15
3.3
5
9
12
15
3.3
5
9
12
15
Output Current 1
Min. Load
mA
100-150
55-83
42-62
33-50
150
83
62
50
227
150
83
62
50
227
150
83
62
50
Full Load
mA
400-600
222-333
166-250
133-200
600
333
250
200
909
600
333
250
200
909
600
333
250
200
Input
Current
Full load
mA
615
563
548
533
362
320
316
308
178
174
156
154
150
87
87
78
77
76
Efficiency 2
(Min.)
%
66
72
71
73
71
78
78
79
70
70
78
80
82
71
73
80
81
81
Isolation
Capacitance
MTTF 3
pF kHrs
40 1939
52 1926
43 1907
44 1924
36 1928
52 1916
44 1897
47 1914
30 1671
36 1673
52 1663
44 1644
54 1657
30 1676
35 1668
52 1663
44 1648
53 1661
INPUT CHARACTERISTICS
Parameter
Conditions
All NDY05XX
Voltage range
All NDY12XX
All NDY24XX
All NDY48XX
NDY2403
NDY4803
All NDY05XX
Reflected ripple current 2
All NDY12XX
All other NDY24XX
All other NDY48XX
Min. Typ. Max. Units
4.5 5
9
9 12 18
VDC
18 24 36
36 48 72
180 360
140 290
400 500
mA p-p
150 170
290 360
100 127
ABSOLUTE MAXIMUM RATINGS
Short-circuit protection
Lead temperature 1.5mm from case for 10 seconds
Minimum load
Input voltage 05 types
Input voltage 12 types
Input voltage 24 types
Input voltage 48 types
Internal dissipation
Continuous
300°C
25% of rated load
10V
20V
40V
80V
1.7W
1. Refer to power derating graph.
2. Measured at full load with external input/output capacitors, refer to filter circuit 1.
3. Calculated using MIL-HDBK-217F with nominal input voltage at full load (ground benign) at 25°C.
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_NDY.F03 Page 1 of 4


Murata Manufacturing Electronic Components Datasheet

NDY0505C Datasheet

Isolated 3W Wide Input DC/DC Converters

No Preview Available !

NDY0505C pdf
NDY Series
Isolated 3W Wide Input DC/DC Converters
OUTPUT CHARACTERISTICS
Parameter
Voltage set point accuracy
Line regulation
Load regulation
Ripple1
Noise1
Conditions
With external input/output capacitors
Low line to high line, 3.3V output with external input/output capacitors
Low line to high line, all other outputs with external input/output capacitors
25% load to 100% load, 3.3V output with external input/output capacitors
25% load to 100% load, all other outputs with external input/output capacitors
BW = 20Hz to 300kHz, 3.3V output with external input/output capacitors
BW = 20Hz to 300kHz, all other outputs with external input/output capacitors
BW = DC to 100MHz, 3.3V output with external input/output capacitors
BW = DC to 20MHz, all other outputs with external input/output capacitors
Min. Typ. Max. Units
±1 ±5 %
0.05 0.25
%
0.05 0.5
%
0.6 1.0
%
0.2 0.5
%
80 120
mV rms
5 10
180
mV p-p
50 100
GENERAL CHARACTERISTICS
Parameter
Switching frequency
Conditions
100% load VIN nominal 3.3V output
25% load VIN nominal 3.3V output
100% load VIN nominal, all other outputs
25% load VIN nominal, all other outputs
Min. Typ. Max. Units
160 220
290 560
kHz
80 220
290 560
TEMPERATURE CHARACTERISTICS
Parameter
Conditions
Operation
Ambient temperature
Storage
Cooling
Free air convection
Min. Typ. Max. Units
-40 85
ºC
-50 130
ISOLATION CHARACTERISTICS
Parameter
Conditions
Isolation test voltage
Flash tested for 1 second
Resistance
Viso=500VDC
Min. Typ. Max. Units
1000 VDC
1 GΩ
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 NDY 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?”
The NDY series has been recognized by Underwriters Laboratory for functional isolation. 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 NDY 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.
SAFETY APPROVAL
The NDY series has been recognised by Underwriters Laboratory (UL) to UL 60950 for functional insulation for a maximum case temperature limit of 130ºC (case temperature
measured on the face opposite the pins). File number E151252 applies.
Note: This series gained UL 60950 recognition for products manufactured on or after datecode G1123, any NDY parts manufactured before this date code should not be considered
UL 60950 recognized. Any NDY that is UL recognized will be printed with the UL logo.
1. For lower ripple refer to circuit for reduced ripple.
www.murata-ps.com/support
KDC_NDY.F03 Page 2 of 4


Part Number NDY0505C
Description Isolated 3W Wide Input DC/DC Converters
Maker Murata
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