EXB250 SERIES
Single output
High efficiency topology, 90% typical at 3.3V
Industry standard footprint
Wide baseplate temperature, -40C to +100C
(natural convection)
90% to 110% output trim
No minimum load
Overvoltage protection
Remote on/off
The EXB250 is a new high efficiency, open frame, isolated 165 Watt converter
series in an industry standard half-brick footprint. The EXB250 delivers very high
output current at low voltages, and excellent useable power density for today's
high end applications. The design takes advantage of open frame construction to
provide a low weight, low thermal impedance baseplate design. The seven
models in the series feature an input voltage range of 33 to 75VDC and are
available in output voltages of 12V, 5V, 3.3V, 2.5V, 1.8V, 1.5V and 1.2V. The output
voltage on each model is adjustable from 90% to 110% of the nominal value.
Typical efficiencies for the models are 90% for the 3.3V, 88% for the 2.5V and 87%
for the 1.8V version. The EXB250 series also has a remote on/off capability.
Overcurrent and overvoltage protection features are included as standard. With full
international safety approval including EN60950 (TV Rheinland) and UL/cUL1950,
the EXB250 reduces compliance costs and time to market.
SPECIFICATION
All specifications are typical at nominal input, full load at 25C unless otherwise stated
PAGE 1
[ 2 YEAR WARRANTY ]
NEW
Product
TV
International Safety Standard Approvals
UL/cUL : UL1950 File No. E135734
TV
TV Rheinland Certificate No. R2174184
CB Scheme No. US-TUVR-1085
EMC CHARACTERISTICS
Conducted emissions
EN55022 (See Note 2)
Level A
EN55022 (See Note 2)
Level B
Immunity:
ESD air
EN61000-4-2 8kV (NP), 15kV (NP)
ESD contact
EN61000-4-2 6kV ((NP), 8kV (NP)
Radiated field enclosure EN61000-4-3 10V/m (NP)
Conducted (DC power)
EN61000-4-6 10V (NP)
Conducted (signal)
EN61000-4-6 10V (NP)
Input transients
ETS 300 132-2, ETR 283
GENERAL SPECIFICATIONS
Efficiency
See table
Operational Input/output
1500VDC
Input/baseplate
1500VDC
Switching frequency
Fixed
400kHz typ.
Approvals and
EN60950 (TV Rheinland)
standards (See Note 4)
UL/cUL1950
Material flammability
UL94V-0
Weight
73g (2.6oz)
MTBF
MIL-HDBK-217F
>224,000 hours
@ 40C, 100% load
ground benign
ENVIRONMENTAL SPECIFICATIONS
Thermal performance
Operating baseplate
-40C to +100C
temperature
Non-operating
-40C to +125C
OUTPUT SPECIFICATIONS
Voltage adjustability
90% to 110%
Set point accuracy
1.6% max.
Line regulation
1V2 Model
0.2% max.
Low line to high line
All other models
0.1% max.
Load regulation
Full load to min. load
0.2% max.
Minimum load
0%
Overshoot
At turn-on and turn-off
None
Undershoot
1.2V, 1.5V, 1.8V. 2.5V
None
and 3.3V models
Ripple and noise
5Hz to 20MHz
60mV pk-pk
20mV rms
Transient response
6% max. deviation
(See Note 1)
150s recovery to
within total error band
INPUT SPECIFICATIONS
Input voltage range
48Vin nominal
33 to 75VDC
Input current
No load
145mA max.
Remote OFF
35mA max.
Input current (max.)
5.7A max. @ Io max.
(See Note 3)
and Vin = 33 to 75V
Input reflected ripple
(See Note 5)
350mA (pk-pk) typ.
Active high remote ON/OFF
(See Note 7)
Logic compatibility
Open collector ref to -input
ON
Open circuit or >4.0VDC
OFF
<1.2VDC
Undervoltage lockout
Power up
32.5V (typ.)
Power down
30.5V (typ.)
Start-up time
Power up
10ms (typ.)
(See Note 6)
Remote ON/OFF
3ms (typ.)
72 to 165 Watt
High efficiency DC/DC converters
DC/DC CONVERTERS
|
72-165W DC/DC
http://www.artesyn.com
Data Sheet Artesyn Technologies 2002
The information and specifications contained in this data sheet 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.
PAGE 2
Please consult our website for the following items: Full Data Sheet Application Note
Notes
1
di/dt = 0.1A/s, Vin = 48VDC, Tc = 25C, load change = 0.5 lo max. to
0.75 lo max. and 0.75 lo max. to 0.5 lo max.
2
The EXB250 meets level A and level B conducted emissions only with
external components connected before the input pins to the converter.
See Application Note 119.
3
Recommended input fusing is a 10A HRC 200V rated fuse.
4
This product is only for inclusion by professional installers within other
equipment and must not be operated as a stand alone product.
5
Measured with no external Pi filter. Significant reduction possible with
external filter. See Application Note 119.
6
Start-up into resistive load.
7
Active low remote On/Off is available. Standard product is active high.
When ordering active low parts, designate with the Suffix '-R', e.g
EXB250-48S3V3-R.
8
When ordering 0.145" pin lengths designate with the Suffix'-N', if the
product is already a '-R' suffix product then the suffix will be '-RN'
9
When ordering 0.110" pin lengths designate with the Suffix'-K', if the
product is already a '-R' suffix product then the suffix will be '-RK
9
8
4
3
2
6
1
5
0.128 [3.25]
(4 PLS)
0.054 [1.37]
(7 PLS)
0.094 [2.39]
(2 PLS)
2.280 [57.91]
2.000
[50.80]
2.400
[60.96]
0.200 [5.08]
0.190 [4.83]
1.900 [48.26]
1.700 [43.18]
1.300 [33.02]
1.000 [25.40]
Recommended Hole Pattern
0.700 [17.78]
0.300 [7.62]
0.000 [0.00]
7
0.080
(2 PLS)
1.700 [43.18]
1.300 [33.02]
1.000 [25.40]
0.700 [17.78]
0.300 [7.62]
0.000 [0.00]
M3x0.5 Threaded
Through (4 PLS)
0.040
(7 PLS)
1
2
3
4
5
6
7
8
9
0.500 [12.70]
*0.21 [5.33]
ALL DIMENSIONS IN INCHES [mm]
*Standard available pin length.
0.145 (3.68) and 0.110 (2.79)
options also available. (See
Notes 8 and 9 for ordering details).
BOTTOM
VIEW
TOP
VIEW
CAUTION: Hazardous internal voltages and high temperatures.
Ensure that unit is not user accessible.
DS_EXB250S_20020621.PDF
PROTECTION
Short circuit protection
Continuous
Overvoltage protection
Non-latching clamp
TELECOM SPECIFICATION
Central office interface A
ETS300-132-2, input voltage
and current requirements
PIN CONNECTIONS
PIN NUMBER
FUNCTION
1
+Vin
2
Remote On/Off
3
No Function
4
-Vin
5
-Vout
6
-Sense
7
Trim
8
+Sense
9
+Vout
OUTPUT
INPUT
OVP
OUTPUT
OUTPUT
OUTPUT
EFFICIENCY
REGULATION
MODEL
POWER
VOLTAGE
VOLTAGE
CURRENT
CURRENT
(TYP.)
LINE
LOAD
NUMBER
(7,8,9)
(MAX.)
(MIN.)
(MAX.)
72W
33-75VDC
1.44VDC
1.2V
0A
60A
84.0%
0.2%
0.2%
EXB250-48S1V2
90W
33-75VDC
1.8VDC
1.5V
0A
60A
85.5%
0.1%
0.2%
EXB250-48S1V5
108W
33-75VDC
2.2VDC
1.8V
0A
60A
87.0%
0.1%
0.2%
EXB250-48S1V8
150W
33-75VDC
3.0VDC
2.5V
0A
60A
88.0%
0.1%
0.2%
EXB250-48S2V5
165W
33-75VDC
4.0VDC
3.3V
0A
50A
90.0%
0.1%
0.2%
EXB250-48S3V3
165W
33-75VDC
6.0VDC
5.0V
0A
33A
91.7%
0.1%
0.2%
EXB250-48S05
165W
33-75VDC
14.4VDC
12.0V
0A
13.75A
92.0%
0.1%
0.2%
EXB250-48S12
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