CXA20 Series
DC-DC CONVERTERS
•
•
•
•
•
•
•
•
Single and dual output
20 W DC-DC Converters
1
4:1 input voltage range
No minimum load on singles
6 A on 3.3 V output (@ 48 Vin) at 50 ˚C in still air
Wide operating temperature with overtemperature
protection
±10% output voltage trim
Remote On/Off control
Overvoltage protection
Available RoHS complaint
The CXA20 is a new 20 W addition to the CXA family of open-frame, isolated, dc-dc
converters. The five model series features a 4:1 input voltage range of 18 Vdc to
75 Vdc, making it suitable for a wide variety of communications and distributed
power applications. With its 2.0 x 1.6 inch industry standard footprint, the CXA20
provides an easy upgrade option for new and existing Artesyn customers seeking a
high-performance, cost-effective power supply. The CXA20 is available in output
voltages of 3.3 V, 5 V, 12 V, ±5 V and ±12 V. The 3.3 V version delivering up to 6 A is
fully rated to 20 W. Typical efficiency for the CXA20 is 83%. The CXA20 offers remote
ON/OFF as well as overvoltage, overtemperature and short circuit protection
features.
All specifications are typical at nominal input, full load at 25 °C unless otherwise stated
2 YEAR WARRANTY
SPECIFICATIONS
OUTPUT SPECIFICATIONS
Voltage accuracy
Line regulation
(LL to HL)
Load regulation
(not incl. cross reg.)
Singles/dual positives
Dual negatives
Full load to minimum load
S3V3
Singles/dual positives
Dual negatives
Singles
Duals (for imbalanced loads)
S3V3, S05, D05
S12, D12
All models
±1.0%
±0.1%
±0.1%
±0.2%
±0.1%
±0.1%
None
10%
EMC CHARACTERISTICS
ETS 300 386-1 table 5
Conducted emissions
Radiated emissions
Immunity:
ESD air
ESD contact
EFT DC power
EFT signal
Radiated field enclosure
Surges indoor signal
Conducted (dc power)
Conducted (signal)
Input transients
EN55022, ext. cap. (Note 5)
Level A
EN55022, external filter,
Level B
VDE0878, 48V models
EN55022-B
See App. Note 107
EN61000-4-2 8 kV (NP), 15 kV (RP)
EN61000-4-2 6 kV (NP), 8 kV (RP)
EN61000-4-4 2 kV (NP), 4 kV (LFS)
EN61000-4-4 1 kV (NP), 2 kV (LFS)
EN61000-4-3 10 V/m (NP)
EN61000-4-5 500 V (RP)
EN61000-4-6 10 V (NP)
EN61000-4-6 10 V (NP)
ETS 300 132-2, ETR 283
Minimum load
Ripple and noise
20 MHz bandwidth
Temperature coefficient
Overvoltage protection
Short circuit protection
Short <20 mΩ
Transient response
75 mV pk-pk max.
100 mV pk-pk max.
20 mV rms max.
±0.02%/°C
GENERAL SPECIFICATIONS
Efficiency
Overtemp. shutdown
Isolation voltage
Switching frequency
Approvals and standards
(See Notes 6,7,8)
Material flammability
Weight
MTBF
(Representative model
48S05J @ 48 Vin)
See table
120 ˚C
Input/output test voltage
1500 Vdc
Fixed
400 kHz
EN60950
UL1950 File No. E136005
UL94V-0
26 g (0.92 oz)
MIL-HDBK-217F
3,485,000 hours
Parts stress method
Ground Benign @ 25 °C
See Application Note 107
Hiccup
25% load step
Continuous
automatic recovery
±2.0% max. dev.,
300 µs recovery to
within total error band
±7.0%
Load cross regulation
(See Note 1)
INPUT SPECIFICATIONS
Input voltage range
Input fuse
Max. input rise
and fall time
UVLO turn ON voltage
UVLO turn OFF voltage
Remote ON/OFF
Logic compatibility
ON
OFF
10% load to full load,
either output
48 Vin nominal
HRC recommended
48 V ETS300-132
(See Note 4)
(See Note 4)
18-75 Vdc
2.0 A
5 V/ms
92%
86%
ENVIRONMENTAL SPECIFICATIONS
Thermal performance
Operating ambient
-40 °C to +60 °C,
temperature
(See Note 9)
Non-operating
-55 °C to +125 °C
Classes T3.1, 3.2, 3.3, 3.5
Low: IEC 68-2-1
-40 °C
High: IEC 68-2-2
+60 °C
Change: IEC 68-2-14 -40 °C to +60 °C
IEC 68-2-56
10% to 100% RH
IEC 68-2-30
Condensation
File Name: cxa20.pdf Rev (02): 09 Dec 2005
ETS 300 019-2-3
Air temperature
CMOS/TTL/Open Collector
Open circuit or >2 Vdc
<1.2 Vdc
Relative humidity
CXA20 Series
DC-DC CONVERTERS
20 W DC-DC Converters
INPUT
VOLTAGE
18-75 Vdc
18-75 Vdc
18-75 Vdc
18-75 Vdc
18-75 Vdc
Notes
1
2
3
4
5
6
7
8
Single and dual output
2
For the most current data and application support visit www.artesyn.com/powergroup/products.htm
OUTPUT
VOLTAGE
3.3 V
5V
12 V
±5 V
±12 V
OVERVOLTAGE
PROTECTION
(2,3)
3.7 V
6.67 V
14.25 V
6.67 V
14.25 V
OUTPUT
CURRENT (MAX.)
6A
4A
1.66 A
2 A ea.
0.83 A ea.
TYPICAL
EFFICIENCY
80%
83%
83%
84%
84%
PIN CONNECTIONS
PIN NUMBER
1
2
3
4
5
6
7
8
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
MODEL
NUMBER
(10,11)
CXA20-48S3V3J
CXA20-48S05J
CXA20-48S12J
CXA20-48D05J
CXA20-48D12J
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 4 µF capacitor across the input.
Unit provides basic insulation up to the 75 Vdc maximum input voltage.
Maximum continuous output power not to exceed 20 Watts.
User must provide 2 A HRC (recommended) in line fuse in order to comply
with safety approvals.
9
Download Application Note 107 and the full data sheet from our website.
10
The ‘J’ suffix indicates that these parts are Pb-free (RoHS 6/6) compliant.
TSE RoHS 5/6 (non Pb-free) compliant versions may be available on
special request, please contact your local sales representative for details.
11
NOTICE: Some models do not support all options. Please contact your
local Artesyn representative or use the on-line model number search tool at
http://www.artesyn.com/powergroup/products.htm to find a suitable
alternative.
MAX. TEMPERATURES FOR FULL RATED OUTPUT CURRENT
MODEL
48S3V3J
48S05J
48S12J
48D05J
48D12J
FULL Vin RANGE
50 ˚C
55 ˚C
50 ˚C
55 ˚C
50 ˚C
Vin <60 Vdc
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
CAUTION: Hazardous internal voltages and high temperatures.
Ensure that unit is not user accessible.
75%
80
60
40
20
0
-40˚C
-20˚C
0˚
20˚
40˚
60˚
80˚
100˚
Ambient Temperature
International Safety Standard Approvals
Derating Curve Output Current vs Temperature S3V3J
Natural Convection (<0.1 m/s airflow)
UL/cUL CAN/CSA 22.2 No. 60950-00 : UL 60950
File No. E174104
VDE Certificate No.112836. File No. 10401-3336-0154
CB Report and Certificate to IEC60950, Licence No. 121914
File Name: cxa20.pdf Rev (02): 09 Dec 2005
CXA20 Series
DC-DC CONVERTERS
20 W DC-DC Converters
0.02
±0.004
(0.50
±0.1)
Single and dual output
3
For the most current data and application support visit www.artesyn.com/powergroup/products.htm
0.413
(10.50)
MAX.
OPEN
FRAME
HEIGHT
Ø0.040
±0.002
(Ø1.02
±0.05)
0.14
±0.02
(3.60
±0.5)
STAND-OFFS
4 PLACES
2.00
±0.02
(50.80
±0.5)
1.80
(45.72)
5
0.70
(17.78)
0.20
(5.08)
0.10
(2.54)
6
1
0.60
(15.24)
2
0.50
(12.70)
1.60
±0.02
(40.64
±0.5)
BOTTOM
VIEW
7
0.30
(7.62)
0.70
(17.78)
4
8
ALL DIMENSIONS IN INCHES (mm)
General tolerance
±0.010
(±0.25)
unless otherwise specified
Datasheet © Artesyn Technologies® 2005
The information and specifications contained in this datasheet are believed to be correct at time of publication. However, Artesyn Technologies accepts no responsibility for consequences arising
from printing errors or inaccuracies. Specifications are subject to change without notice. No rights under any patent accompany the sale of any such product(s) or information contained herein.
Please consult our website for the following items:
Application Note
Longform Data Sheet
www.artesyn.com
File Name: cxa20.pdf Rev (02): 09 Dec 2005
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