
PROTECTION
Short-circuit protection
Continuous
Over-voltage protection
Non-latching clamp
Thermal protection
120C hot spot temperature with
automatic recovery
TELECOM SPECIFICATION
Central office interface A
ETS300-132-2, input voltage
and current requirements
For the most current data and application support visit www.artesyn.com/html/products.html
Notes
1
Measured as per recommended set-up. 150mV pk-pk for EXB50-48S12.
2
di/dt = 0.1A/s, Vin = 24/48VDC, Tc = 25°C, load change = 0.5 lo max. to
0.75 lo max. and 0.75 lo max. to 0.5 lo max.
3
The EXB50 meets level A and level B conducted emissions only with
external components connected before the input pins to the converter.
4
Recommended input fusing is a 6.3A HRC 200V rated fuse on the 24V
and 3.15A HRC 200V rated fuse on the 48V.
5
This product is only for inclusion by professional installers within other
equipment and must not be operated as a stand alone product.
6
Simulated source impedance of 12H. 12H inductor in series with +Vin.
7
Start-up into resistive load.
CAUTION: Hazardous internal voltages and high temperatures.
Ensure that unit is not user accessible.
EXB50 Series
Single output
DC/DC CONVERTERS
20-50W High Efficiency DC/DC Converters
2
OUTPUT
INPUT
OVP
OUTPUT
EFFICIENCY
REGULATION
MODEL
POWER
VOLTAGE
CURRENT
(TYP.)
LINE
LOAD
NUMBER
(9)
(MAX.)
(MIN.)
(MAX.)
20W
18-36VDC
2.4VDC
2.0V
0A
10A
86.5%
±0.1%
±0.2%
EXB50-24S2V0
33W
18-36VDC
3.9VDC
3.3V
0A
10A
89.0%
±0.1%
±0.2%
EXB50-24S3V3(14)
50W
18-36VDC
6.0VDC
5.0V
0A
10A
90.0%
±0.1%
±0.2%
EXB50-24S05
18W
36-75VDC
2.15VDC
1.8V
0A
10A
85.7%
±0.1%
±0.2%
EXB50-48S1V8(15)
20W
36-75VDC
2.45VDC
2.0V
0A
10A
87.5%
±0.1%
±0.2%
EXB50-48S2V0(15)
25W
36-75VDC
2.95VDC
2.5V
0A
10A
87.5%
±0.1%
±0.2%
EXB50-48S2V5(15)
33W
36-75VDC
4.00VDC
3.3V
0A
10A
90.0%
±0.1%
±0.2%
EXB50-48S3V3(14,15)
50W
36-75VDC
6.15VDC
5.0V
0A
10A
91.0%
±0.1%
±0.2%
EXB50-48S05(15)
50W
36-75VDC
14.2VDC
12.0V
0A
4.2A
90.0%
±0.1%
±0.2%
EXB50-48S12(15)
Please consult our website for the following items: Application Note Longform Data Sheet
www.artesyn.com
File Name: EXB50S.PDF Rev: 4 March 2004
Notes Continued
8
EXB50-24S2V0 model has 5.0% max. deviation and 300s recovery.
9
Maximum output deviation is 10% inclusive of trim.
10 Contact factory for operation at higher altitude.
11 See Application Note 113 for de-rating curves.
12 Wide operating temperature on the EXB50-24S05 is -40C to +60C.
13 Input transient (48V) ETS300 132-2 ETR283.
14 100V, 100ms transient applies to the EXB50-24S3V3 and the EXB50-
48S3V3 models. Please add the suffix 'R03' to the model number e.g.
EXB50-48S3V3R03. This is also active low remote ON/OFF.
15 Active low remote ON/OFF available. Please add suffix '-R' to model
number e.g. EXB50-48S3V3-R
EXTERNAL OUTPUT TRIMMING
TRIM
UP
+ Sense
Trim
- Sense
TRIM
DOWN
RT1
or
RT2
Output can be externally trimmed
by using the method shown below.