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NPH25S2405I Datasheet(PDF) 1 Page - C&D Technologies

Part # NPH25S2405I
Description  Isolated 25W Single Output DC/DC Converters
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Manufacturer  CANDD [C&D Technologies]
Direct Link  http://www.cdpowerelectronics.com
Logo CANDD - C&D Technologies

NPH25S2405I Datasheet(HTML) 1 Page - C&D Technologies

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NPH25S SERIES
Isolated 25W Single Output DC-DC Converters
SELECTION GUIDE
FEATURES
High Efficiency to 89%
Power Density up to 1.78W/cm3
(28W/in3 )
1.5kV Input to Output Isolation
Industry Standard Pinout
UL 1950 Recognised
Non Latching Current Limit
Constant 350kHz Frequency
Versatile Control Options
Continuous Rating to 30W at 60°C
Without Heatsink
Operation to Zero Load
Protected Against All Load Faults
Internal Over Temperature Protection
Uses No Electrolytic Capacitors
UL 94V-0 Package Materials
DESCRIPTION
The NPH25S 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
heatsinking, 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
recognised by Underwriters Laboratory (UL)
to UL 1950 for operational insulation, file
number E179522 applies.
Nominal
Output
Output
Input Voltage
Voltage
Current
Efficiency
Order Code1
(V)
(V)
(A)
(%)
NPH25S2403i
24
3.4
7.3
81
NPH25S2405i
24
5.1
5.0
84
NPH25S2412i
24
12.1
2.1
86
NPH25S2415i
24
15.1
1.7
87
NPH25S4803i
48
3.4
7.3
83
NPH25S4805i
48
5.1
5.0
85
NPH25S4812i
48
12.1
2.1
88
NPH25S4815i
48
15.1
1.7
89
Parameter
Conditions
MIN
NOM
MAX
Units
Voltage Range
Continuous operation, 24V input types
18
24
36
V
Continuous operation, 48V input types
36
48
75
Parameter
Conditions
MIN
TYP
MAX
Units
Voltage Set
50% load
0.5
%
Point Error
Overall
Case temperature –40°C to 110°C
Voltage Error
Load 0% - 100%
2.5
%
Input specified range
Temperature Coefficient
of Output Voltage
250
ppm°C
(slope)
Deviation of
Output Voltage
Temperature MIN-MAX
0.5
1
%
Line Regulation
Operating voltage range, 50% load
0.1
%
Load Regulation
0% - 100% rated load2
0.5
%
Ripple
rms
70
mV
Input voltage, 24V input types
–0.5V to 40V4
Input voltage, 48V input types
–0.5V to 80V4
Output Voltage
–0.3V to regulated voltage
Output trim control
–1V to +30V
Synchronisation/shutdown control
±15V relative to input return
INPUT CHARACTERISTICS
OUTPUT CHARACTERISTICS
Parameter
Conditions
MIN
TYP
MAX
Units
Voltage Trimming
At rated load,
±10
%
Range
Trim control at either output
Remote Switch Input3
Not operating
-15
0
1.5
V
(voltage relative
to input negative)
Operating, open circuit voltage
9
10
11
Start Delay
Time from application of valid input
voltage to output being in specification
25
50
mS
Synchronisation3
Specified drive signal
320
440
kHz
Switching Frequency
330
350
395
kHz
CONTROL CHARACTERISTICS
ABSOLUTE MAXIMUM RATINGS
ISOLATION CHARACTERISTICS
Parameter
Conditions
MIN
TYP
MAX
Units
Isolation Voltage
Flash tested for 1 second
1500
VDC
Resistance
Viso=500VDC
1
4000
GΩ
11 If optional pins ADJ and SS are required (as indicated in the pin connections diagram) prefix the ending “i” with
an E when ordering, e.g. NPH25S4803Ei.
2A minimum load of 10% of rating is recommended for typical applications.
3 Optional where fitted.
4 Absolute maximum value for 30 seconds. Prolonged operation may damage the product.
All specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified.
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