NCX10S SERIES
Isolated 10W Single Output DC/DC Converters
SELECTION GUIDE
1
Power Consumption
at 0% Load
Power Consumption
at Shutdown
Efficiency (MIN)
Output Voltage
Output Current
Nominal
Input Voltage
Order Code
NCX10S24033
NCX10S24050
NCX10S48033
FEATURES
■
High Efficiency to 82%
■
500V Input to Output Isolation
■
Industry Standard Pinout
■
UL 60950 Recognition Pending
■
Non Latching Current Limit
■
Constant 400kHz Frequency
■
Versatile Control Options
■
Continuous Rating to 10W @85°C
■
Operation to Zero Load
■
Protected Against Load Faults
■
Internal Over Temperature Protection
■
Uses No Electrolytic Capacitors
DESCRIPTION
The NCX10S series of DC/DC Converters
combines ease of application with versatility
and is available in two pin patterns based on
popular industry standards. 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. The
NCX10S series is currently undergoing
testing by Underwriters Laboratory (UL) to UL
60950 for functional insulation.
NCX10S48050
NCX10S24033Y
NCX10S24050Y
NCX10S48033Y
NCX10S48050Y
V
24
24
48
48
24
24
48
48
V
3.4
5.1
3.4
5.1
3.4
5.1
3.4
5.1
A
3.1
2.0
3.1
2.0
3.1
2.0
3.1
2.0
mW
270
280
500
510
270
280
500
510
mW
26
25
44
45
26
25
44
45
%
78
82
79
82
78
82
79
82
INPUT CHARACTERISTICS
1
Parameter
Conditions
MIN
NOM
MAX
Units
Voltage Range
Continuous operation, 24V input types
Continuous operation, 48V input types
18
36
24
48
36
75
OUTPUT CHARACTERISTICS
1
Parameter
Conditions
MIN
TYP
MAX
Units
Voltage Set Point Error 50% load
Substrate temperature –40 to 110°C
Overall
Load 0% - 100%
Voltage Error
Input specified range
Temperature Coefficient
of Output Voltage
(slope)
Deviation of
Temperature MIN - MAX
Output Voltage
Current Limit
Continuous short circuit causes no damage
NCX10S24033
Overload
95% of nominal NCX10S24050
Output Current
output voltage
NCX10S48033
NCX10S48050
Line Regulation
Operating voltage range, 50% load
Load Regulation
0% - 100% rated load
2
Ripple
rms
1.0
2.5
250
1.0
153
170
148
164
0.1
0.5
1.0
CONTROL CHARACTERISTICS
Parameter
Conditions
MIN
TYP
MAX
Units
Voltage Trimming
Range
Remote Switch Input
(voltage relative
to input negative)
Start Delay
Switching Frequency
At rated load,
Trim control at either output
Not operating
Operating, open circuit voltage
V
IN
MIN to MAX
Time from application of valid input
voltage to output being in specification
±10
-0.3
2.6
0
5.0
1.5
6.1
10
360
400
440
ABSOLUTE MAXIMUM RATINGS
Input voltage, 24V input types
Input voltage, 48V input types
Output Voltage
Output trim control
Shutdown control
–0.3V to 40V
–0.3V to 80V
–0.3V to regulated voltage
–1V to +30V relative to output return
–0.3V to 6V relative to input return
1 Specifications typical at T
A
=25°C, nominal input voltage and rated output current unless otherwise specified.
2 A minimum load of 10% of rating is recommended for typical applications, see application notes.
Isolation
Capacitance
pF
23
26
29
32
23
26
29
32
V
%
%
ppm°C
%
% of
rated
Output
Current
%
%
%
%
V
ms
kHz
CANDD [ C&D TECHNOLOGIES ]
