NPH15S Series
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Isolated 15W Single Output DC-DC Converters
SELECTION GUIDE
Nominal Input Output Output
2
Current Limit Efciency MTTF
1
Order Code Voltage Voltage Current
V V A A (Min.) A (Max.) % kHrs
NPH15S2403EiC 24 3.4 4.4 7.5 11.0 81 335
FEATURES
NPH15S2403iC 24 3.4 4.4 7.5 11.0 81 335
NPH15S2405EiC 24 5.1 3.0 5.0 7.5 84 286
RoHS compliant
NPH15S2405iC 24 5.1 3.0 5.0 7.5 84 286
High efciency to 89%
NPH15S2412EiC 24 12.1 1.3 2.5 3.7 86 286
3
NPH15S2412iC 24 12.1 1.3 2.5 3.7 86 286
Power density up to 2.4W/cm
NPH15S2415EiC 24 15.1 1.0 2.0 3.0 87 281
UL 94V-0 package material
NPH15S2415iC 24 15.1 1.0 2.0 3.0 87 281
NPH15S4803EiC 48 3.4 4.4 7.5 11.0 83 295
Industry standard pinout
NPH15S4803iC 48 3.4 4.4 7.5 11.0 83 295
UL 1950 recognized
NPH15S4805EiC 48 5.1 3.0 5.0 7.5 85 301
Non latching current limit NPH15S4805iC 48 5.1 3.0 5.0 7.5 85 301
NPH15S4812EiC 48 12.1 1.3 2.5 3.7 88 302
Constant 350kHz frequency
NPH15S4812iC 48 12.1 1.3 2.5 3.7 88 302
1.5kV input to output isolation
NPH15S4815EiC 48 15.1 1.0 2.0 3.0 89 296
NPH15S4815iC 48 15.1 1.0 2.0 3.0 89 296
Versatile control options
Continuous rating to 30W at 40C without
INPUT CHARACTERISTICS
heatsink
Parameter Conditions Min. Typ. Max. Units
Continuous operation, 24V input types 18 24 36
Operation to zero load
Voltage range V
Continuous operation, 48V input types 36 48 75
Protected against load faults
OUTPUT CHARACTERISTICS
Internal over temperature protection
Parameter Conditions Min. Typ. Max. Units
Uses no electrolytic capacitors
Voltage set point error 50% load 0.5 %
Case temperature -40C to 110C
DESCRIPTION
Overall voltage error Load 0% - 100% 2.5 %
Input specied range
The NPH15S series of DC-DC converters com-
Temperature coefcient
bines ease of application with versatility. The pin
250 ppmC
of output voltage (slope)
pattern is based on the popular industry standard,
Deviation of output
but two additional pins may optionally be tted to
Temperature MIN-MAX 0.5 1 %
voltage
provide a variety of features not commonly found
Line regulation Operating voltage range, 50% load 0.1 %
on units of this type. High efciency enables full
rating to be achieved in a small package without
Load Regulation 0% - 100% rated load 0.5 %
heatsinking, and a high surge capability will pro- Ripple rms 70 mV
vide for start-up and transient loads, whilst being
thermally protected against sustained overload.
ISOLATION CHARACTERISTICS
Overload protection of the constant current type
Parameter Conditions Min. Typ. Max. Units
ensures start-up into complex load conditions. The
Isolation test voltage Flash tested for 1 second 1500 VDC
copper case achieves efcient heat transfer and
Resistance VISO = 500VDC 1 G
screening. The product range has been recog-
nised by Underwriters Laboratory (UL) to UL 1950
ABSOLUTE MAXIMUM RATINGS
for operational insulation, le number E151252
3
Input voltage, 24V input types -0.5V to 40V
applies.
3
Input voltage, 48V input types -0.5V to 80V
Output voltage -0.3V to regulated voltage
Output trim control -1V to +30V
Synchronisation/shutdown control 15V relative to input return
1. Parts ending with EiC have optional TRIM and SS pins tted.
For full details go to
2. Calculated using MIL-HDBK-217F with nominal input voltage at full load.
www.murata-ps.com/rohs
3. Absolute maximum value for 30 seconds. Prolonged operation may damage the product.
All specications typical at TA=25C, nominal input voltage and rated output current unless otherwise specied.
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KDC_NPH15S.F06 Page 1 of 8NPH15S Series
Isolated 15W Single Output DC-DC Converters
CONTROL CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
1
Voltage trimming range At rated load, trim control at either output 10 %
Remote switch input (voltage relative to Not operating -15 0 1.5
V
1
input negative)
Operating, open circuit voltage 9 10 11
Time from application of valid input voltage to output being in speci-
Start delay 25 50 ms
cation
1
Synchronisation Specied drive signal 320 440 kHz
Switching frequency 330 350 395 kHz
TEMPERATURE CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Case temperature Full load -40 110
C
Storage Absolute Max. internal temperature -40 125
Relative humidity Non condensing 85C 85 %
Thermal protection Operates at case temperature 110 C
THERMAL CHARACTERISTICS
UL 1950 recognition: Max. permissable loads for a given ambient temperature for any NPH15S model.
Temperature (C) Power (W) Temperature (C) Power (W)
40 15.0 70 11.7
50 15.0 80 9.8
53 15.0 85 8.8
60 13.7 90 7.8
Max. power rating with case temperature maintained by external means (e.g. forced air cooling).
Case Temperature
Part Number Units
100C 105C 110C
NPH15S2403XXX 19 16 12
NPH15S2405XXX 22 19 15
W
NPH15S2412XXX 25 22 19
NPH15S2415XXX 26 24 21
NPH15S4803XXX 20 17 13
NPH15S4805XXX 23 20 16
W
NPH15S4812XXX 28 26 23
NPH15S4815XXX 30 28 25
THERMAL PERFORMANCE
24V Input 48V Input
XFS 8
P0VUQVU1 XFS 8
P0VUQVU1
FNQFSB UVSF 5NCJFOU $
FNQFSB UVSF 5NCJFOU $
1. Optional - where tted.
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KDC_NPH15S.F06 Page 2 of 8