NPH15S SERIES
Isolated 15W Single Output DC/DC Converters
SELECTION GUIDE
Nominal Input Output
Output
Current
Current Limit
Efficiency
MTTF2
Order Code1
Voltage
Voltage
V
V
3.4
A
A (MIN.)
A (MAX.)
11.0
11.0
7.5
%
81
81
84
84
86
86
87
87
83
83
85
85
88
88
89
89
kHrs
335
335
286
286
286
286
281
281
295
295
301
301
302
302
296
296
NPH15S2403EiC
NPH15S2403iC
NPH15S2405EiC
NPH15S2405iC
NPH15S2412EiC
NPH15S2412iC
NPH15S2415EiC
NPH15S2415iC
NPH15S4803EiC
NPH15S4803iC
NPH15S4805EiC
NPH15S4805iC
NPH15S4812EiC
NPH15S4812iC
NPH15S4815EiC
NPH15S4815iC
24
24
24
24
24
24
24
24
48
48
48
48
48
48
48
48
4.4
4.4
3.0
3.0
1.3
1.3
1.0
1.0
4.4
4.4
3.0
3.0
1.3
1.3
1.0
1.0
7.5
7.5
5.0
5.0
2.5
2.5
2.0
2.0
7.5
7.5
5.0
5.0
2.5
2.5
2.0
2.0
3.4
5.1
5.1
7.5
12.1
12.1
15.1
15.1
3.4
3.7
FEATURES
nꢀRoHS compliant
3.7
3.0
3.0
nꢀHigh efficiency to 89%
nꢀPower density up to 2.4W/cm3
nꢀUL 94V-0 package material
nꢀIndustry standard pinout
nꢀUL 1950 recognized
11.0
11.0
7.5
3.4
5.1
5.1
7.5
12.1
12.1
15.1
15.1
3.7
3.7
3.0
nꢀNon latching current limit
nꢀConstant 350kHz frequency
nꢀ1.5kV input to output isolation
nꢀVersatile control options
3.0
INPUT CHARACTERISTICS
Parameter
Conditions
Continuous operation, 24V input types
Continuous operation, 48V input types
MIN.
18
36
TYP.
24
48
MAX.
36
75
Units
Voltage range
V
nꢀContinuous rating to 30W at 40ºC without
heatsink
OUTPUT CHARACTERISTICS
nꢀOperation to zero load
Parameter
Voltage set point error
Conditions
50% load
MIN.
TYP.
MAX.
0.5
Units
%
nꢀProtected against load faults
nꢀInternal over temperature protection
nꢀUses no electrolytic capacitors
Case temperature -40ºC to 110ºC
Load 0% - 100%
Input specified range
Overall voltage error
2.5
%
Temperature coefficient
of output voltage (slope)
250
1
ppmºC
%
DESCRIPTION
Deviation of output
voltage
Temperature MIN-MAX
0.5
The NPH15S 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, and a high surge capability will provide
for start-up and transient loads, whilst being
thermally protected against sustained overload.
Overload protection of the “constant current” type
ensures start-up into complex load conditions. The
copper case achieves efficient heat transfer and
screening. The product range has been recog-
nised by Underwriters Laboratory (UL) to UL 1950
for operational insulation, file number E179522
applies.
Line regulation
Load Regulation
Ripple
Operating voltage range, 50% load
0% - 100% rated load
rms
0.1
0.5
%
%
70
mV
ISOLATION CHARACTERISTICS
Parameter
Isolation test voltage
Resistance
Conditions
Flash tested for 1 second
VISO = 500VDC
MIN.
1500
1
TYP.
MAX.
Units
VDC
GΩ
ABSOLUTE MAXIMUM RATINGS
Input voltage, 24V input types
Input voltage, 48V input types
Output voltage
-0.5V to 40V3
-0.5V to 80V3
-0.3V to regulated voltage
-1V to +30V
Output trim control
Synchronisation/shutdown control
15V relative to input return
1. Parts ending with EiC have optional TRIM and SS pins fitted.
2. Calculated using MIL-HDBK-217F with nominal input voltage at full load.
3. Absolute maximum value for 30 seconds. Prolonged operation may damage the product.
All specifications typical at T =25°C, nominal input voltage and rated output current unless otherwise specified.
A
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