NPH10S2405EiC Datasheet PDF - Murata
| Part Number | NPH10S2405EiC | |
| Description | Isolated 10W Single Output DC/DC Converters | |
| Manufacturers | Murata | |
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www.murata-ps.com
FEATURES
RoHS compliant
High efficiency to 87%
Power density up to 1.5Wcm3
UL1950 recognized
Industry standard pinout
Surge rating to 12W
Non latching current limit
1.5kV input to output isolation
Versatile control options
Continuous rating to 10W at 72ºC without
heatsink
Operation to zero load
Protected against load faults
Internal over temperature protection
Uses no electrolytic capacitors
Fixed frequency
No external components required
DESCRIPTION
The NPH10S series of DC/DC converters combines
ease of application with versatility. The pin pattern
is based on the popular industry standard, but two
additional pins may optionally be fitted to provide
a variety of features not commonly found on units
of this type. High efficiency enables full rating to
be achieved in a small package without heat-
sinking. Thermally protected against sustained
overload. The copper case achieves efficient heat
transfer and screening. The product range has
been recognised by Underwriters Laboratory (UL)
to UL 1950 for operational insulation, file number
E151252 applies.
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com/support
NPH10S Series
Isolated 10W Single Output DC/DC Converters
SELECTION GUIDE
Order Code1
Current
Limit 2 (Typ.)
V V A A % μF kHrs
NPH10S2403EiC 24
3.4 2.94
4.3
79 470 279
NPH10S2403iC
24
3.4 2.94
4.3
79 470 279
NPH10S2405EiC 24
5.1 1.96
3.1
83 470 275
NPH10S2405iC
24
5.1 1.96
3.1
83 470 275
NPH10S2412EiC 24 12.1 0.83 1.2 86 100 259
NPH10S2412iC
24 12.1 0.83 1.2
86 100 259
NPH10S2415EiC 24
15.1 0.67
1.1
86
47
243
NPH10S2415iC 24 15.1 0.67 1.1 86 47 243
NPH10S4803EiC 48
3.4 2.94
4.1
80 470 317
NPH10S4803iC
48
3.4 2.94
4.1
80 470 317
NPH10S4805EiC 48
5.1 1.96
2.8
83 470 312
NPH10S4805iC
48
5.1 1.96
2.8
83 470 312
Obsolete
Recommended
Alternative
NPH10S4812EiC 48
12.1 0.83
1.3
86
56
291 UEI15-120-Q48P-C
NPH10S4812iC 48 12.1 0.83 1.3 86 56 291 UEI15-120-Q48P-C
NPH10S4815EiC 48
15.1 0.67
1.0
87
22
272 UEI15-150-Q48P-C
NPH10S4815iC 48 15.1 0.67 1.0 87 22 272 UEI15-150-Q48P-C
INPUT CHARACTERISTICS
Parameter
Conditions
Voltage range
Continuous operation, 24V input types
Continuous operation, 48V input types4
Min. Typ. Max. Units
18 24 36
36 48 75
V
OUTPUT CHARACTERISTICS
Parameter
Conditions
Min. Typ. Max. Units
Voltage set point error
50% load after 30 mins at nominal sup-
ply voltage
0.5 %
Overall voltage error
Case temperature -40ºC to 110ºC
Load 0% - 100%
Input specified range
1 2.5 %
Temperature coefficient of
output voltage (slope)
Over any 10ºC span within the specified
temperature range
50 250 ppmºC
Deviation of output voltage Specified over temperature MIN-MAX
0.5 1
%
Line regulation
Load Regulation
Ripple
Operating voltage range, 50% load
0% - 100% rated load5
rms
0.05 0.1
0.5
70
%
%
mV
ABSOLUTE MAXIMUM RATINGS
Input voltage, 24V input types
Input voltage, 48V input types
Output voltage
Output trim control
Synchronisation/shutdown control
-0.5V to 40V 6
-0.5V to 80V 6
-0.3V to controlled output voltage (operating or non-operating)
-1V to +30V
±15V relative to input return
1. Parts ending with EiC have optional TRIM and SS pins fitted.
2. Current is quoted when output is 95% of regulated voltage.
3. Calculated using MIL-HDBK-217F with nominal input voltage at full load.
4. For applications requiring UL 1950 recognition, input voltage must not exceed 60VDC.
5. A minimum load of 10% of rating is recommended for typical applications.
6. Absolute maximum value for 30 seconds. Prolonged application may damage the product.
All specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified.
KDC_NPH10SC.J03 Page 1 of 8
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NPH10S Series
Isolated 10W Single Output DC/DC Converters
EMC FILTERING AND SPECTRA
FILTERING
The module includes a basic level of filtering, sufficient for many applications. Where lower noise levels are desired, filters can easily be added to achieve any required
noise performance.
A DC/DC converter generates noise in two principle forms: that which is radiated from its body and that conducted on its external connections. There are three separate
modes of conducted noise: input differential, output differential and input-output.
This last appears as common mode at the input and the output, and cannot therefore be removed by filtering at the input or output alone. The first level of filtering is to
connect a capacitor between input and output returns, to reduce this form of noise. It typically contains high harmonics of the switching frequency, which tend to appear
as spikes on surrounding circuits. The voltage rating of this capacitor must match the required isolation voltage. (Due to the great variety in isolation voltage and required
noise performance, this capacitor has not been included within the converter.)
Input ripple is a voltage developed across the internal Input decoupling capacitor. It is therefore measured with a defined supply source impedance. Although simple
series inductance will provide filtering, on its own it can degrade the stability. A shunt capacitor is therefore recommended across the converter input terminals, so that it
is fed from a low impedance.
If no filtering is required, the inductance of long supply wiring could also cause a problem, requiring an input decoupling capacitor for stability. An electrolytic will perform
well in these situations. The input-output filtering is performed by the common-mode choke on the primary. This could be placed on the output, but would then degrade
the regulation and produce less benefit for a given size, cost, and power loss.
Radiated noise is present in magnetic and electrostatic forms. The latter is suppressed by the metal case, which is connected to the output return, typically a zero-volt
point. Thanks to the small size of these units, neither form of noise will be radiated “efficiently”, so will not normally cause a problem. Any question of this kind usually
better repays attention to conducted signals.
EMC FILTER AND VALUES TO OBTAIN SPECTRA AS SHOWN
-
$ $
N)
"
-
O'
7"$:SBUFE
%$
$
%$
O'
7"$:SBUFE
-
NPH10S2403
C1
10μF 100V
C2
47μF 63V
C3
2.2μF 63V
Component reference
C4 L1
10μF 25V
NPH10S2405
NPH10S2412
NPH10S2415
10μF 100V
10μF 100V
10μF 100V
47μF 63V
Not required
10μF 63V
2.2μF 63V
470nF 63V
Not required
10μF 25V
10μF 25V
10μF 25V
NPH10S4803
NPH10S4805
NPH10S4812
10μF 100V
10μF 100V
10μF 100V
47μF 100V
47μF 100V
Not required
220nF 100V
220nF 100V
470nF 100V
10μF 25V
10μF 25V
10μF 25V
NPH10S4815
10μF 100V
Not required
470nF 100V
10μF 25V
C1, C2 & C4 : Electrolytic capacitors
C3 : Polyester or ceramic capacitor
EMC Spectra red limit line is EN 55022 curve B Quasi-peak average limit.
$
L2
MPS 18R333C
33μH 2A
MPS 18R333C
33μH 2A
MPS 18R333C
33μH 2A
MPS 18R473C
47μH 1.65A
MPS 18R104C
100μH 1.2A
MPS 18R104C
100μH 1.2A
MPS 18R104C
100μH 1.2A
MPS 18R104C
100μH 1.2A
L3
MPS 18R472C
4.7μH 5.35A
MPS 18R103C
10μH 3.45A
MPS 18R333C
33μH 2.00A
MPS 18R333C
33μH 2.00A
MPS 18R472C
4.7μH 5.35A
MPS 18R103C
10μH 3.45A
MPS 18R333C
33μH 2.00A
MPS 18R333C
33μH 2.00A
www.murata-ps.com/support
KDC_NPH10SC.J03 Page 5 of 8
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