CXA20 Series
DC/DC CONVERTERS
20W DC/DC Converters
INPUT
VOLTAGE
18-75VDC
18-75VDC
18-75VDC
18-75VDC
18-75VDC
Notes
1
2
3
4
5
6
7
8
9
Single and dual output
2
For the most current data and application support visit www.artesyn.com/powergroup/products.htm
OUTPUT
VOLTAGE
3.3V
5.0V
12V
±5V
±12V
OVERVOLTAGE
PROTECTION
(2,3)
3.7V
6.67V
14.25V
6.67V
14.25V
OUTPUT
CURRENT (MAX.)
6.0A
4.0A
1.66A
2.0A ea.
0.83A ea.
TYPICAL
EFFICIENCY
80%
83%
83%
84%
84%
PIN CONNECTIONS
PIN NUMBER
1
2
3
4
5
6
CAUTION: Hazardous internal voltages and high temperatures.
Ensure that unit is not user accessible.
MODEL
NUMBER
CXA20-48S3V3
CXA20-48S05
CXA20-48S12
CXA20-48D05
CXA20-48D12
Negative output voltage deviation when either load is changed.
For TVS/Zener specifications please see Application Note 107.
On dual output models, OVP protection is on positive outputs only.
With respect to minimum input voltage.
With one external 4µF capacitor across the input.
Unit provides basic insulation up to the 75VDC maximum input voltage.
Maximum continuous output power not to exceed 20 Watts.
User must provide 2A HRC (recommended) in line fuse in order to comply
with safety approvals.
Download Application Note 107 and the full data sheet from our website.
SINGLE OUTPUT
+ Input
– Input
No Pin
Remote On/Off
No Pin
+ Output
- Output
Trim
DUAL OUTPUT
+ Input
- Input
No Pin
Remote On/Off
+ Output
Common
- Output
Trim
7
8
MAX. TEMPERATURES FOR FULL RATED OUTPUT CURRENT
MODEL
48S3V3
48S05
48S12
48D05
48D12
FULL Vin RANGE
50˚C
55˚C
50˚C
55˚C
50˚C
Vin <60VDC
50˚C
60˚C
55˚C
60˚C
60˚C
EXTERNAL OUTPUT TRIMMING
All models can be externally trimmed by ±10% using either
method shown below. See Application Note 107 for details.
+ Output
- Output
TRIM
DOWN
TRIM
UP
Trim
100
Rated Output Current
80
75%
60
40
20
0
-40˚C
-20˚C
0˚
20˚
40˚
60˚
80˚
100˚
Ambient Temperature
Derating Curve Output Current vs Temperature S3V3
Natural Convection (<0.1m/s airflow)
Please consult our website for the following items:
Application Note
Longform Data Sheet
www.artesyn.com
File Name: CXA20.PDF Rev: 11 Jan 2002
ARTESYN [ ARTESYN TECHNOLOGIES ]
