Datasheet

NPH15S Series
Isolated 15W Single Output DC/DC Converters
KDC_NPH15S.F05 Page 2 of 8
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CONTROL CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Voltage trimming range
1
At rated load, trim control at either output ±10 %
Remote switch input (voltage relative to
input negative)
1
Not operating -15 0 1.5
V
Operating, open circuit voltage 9 10 11
Start delay
Time from application of valid input voltage to output being in specifi-
cation
25 50 ms
Synchronisation
1
Specified 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
ºC
Storage Absolute Max. internal temperature -40 125
Relative humidity Non condensing 85ºC 85 %
Thermal protection Operates at case temperature 110 ºC
THERMAL CHARACTERISTICS
UL 1950 recognition: Max. permissable loads for a given ambient temperature for any NPH15S model.
Temperature (ºC) Power (W) Temperature (ºC) 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).
Part Number
Case Temperature
Units
100ºC 105ºC 110ºC
NPH15S2403XXX 19 16 12
W
NPH15S2405XXX 22 19 15
NPH15S2412XXX 25 22 19
NPH15S2415XXX 26 24 21
NPH15S4803XXX 20 17 13
W
NPH15S4805XXX 23 20 16
NPH15S4812XXX 28 26 23
NPH15S4815XXX 30 28 25
THERMAL PERFORMANCE
24V Input 48V Input
1. Optional - where fitted.
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