Eighth-Brick Series
Single output
DC/DC CONVERTERS
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High Current, High Efficiency, Low Profile
NEW Product
1
Ultra-high efficiency topology
Industry standard eighth brick footprint (identical to quarter-brick pinout)
Low profile through-hole version
Low profile with 38% space savings over other quarter-brick brick converters
Wide ambient temperature range, -40ºC to +85ºC
80% to 110% output trim
Monotonic start-up in normal and prebiased loads
Basic insulation system
Overvoltage and overtemperature protection
Secondary side control, no optocouplers,
fast transient response
•
100V, 100ms input voltage transient rated
This is a new high efficiency, open-frame, low profile, single board, isolated DC/DC
converter series in an industry standard eight-brick footprint that provides up to 100W of
output power. The series delivers very high output current at low voltages, and excellent
useable power for today’s high performance applications. The series features an input
voltage range of 36 to 75VDC and is available with output voltages of 1.2V, 1.5V 1.8V, 2.5V,
3.3V and 5.0V. The output voltage is adjustable from 80% to 110% of the nominal value. The
series also has a remote ON/OFF capability. Over-current, over-voltage and over-temperature
protection features are included as standard. Full international safety approval including
EN60950 VDE and UL/cUL60950, reduces compliance costs and time to market.
All specifications are typical at nominal input, full load at 25°C ambient unless otherwise stated
TÜV
2 YEAR WARRANTY
SPECIFICATIONS
OUTPUT SPECIFICATIONS
Voltage adjustability
Minimum load
Overshoot
Undershoot
Transient response
(See Note 1)
INPUT SPECIFICATIONS
Input voltage range
Input current
48V nominal
No load
Remote OFF
36 to 75VDC
50mA
5mA
Open collector ref to -input
Open circuit or >2.4VDC
<0.4VDC
35.5V (typ.)
33.5V (typ.)
15ms (typ.)
15ms (typ.)
At turn-on and turn-off
80% to 110%
0%
None
None
60mV to 120mV typ. deviation
20µs recovery
EMC CHARACTERISTICS
Immunity:
ESD air enclosure
Radiated field enclosure
Conducted
Input transients
EN61000-4-2 8kV/6kV (O/P within spec.)
EN61000-4-3 10V/m (O/P within spec.)
EN61000-4-6 10V
(O/P within spec.)
100V, 100ms
GENERAL SPECIFICATIONS
Basic insulation
Switching frequency
Approvals and
standards
Material flammability
Weight
MTBF
Input/output
Fixed
(See Note 3)
2250VDC
480kHz
EN60950 VDE
UL/cUL 60950
UL94V-0
21g (0.73oz)
Telcordia Tech SR-332 4,034,120 hours
Active high remote ON/OFF
Logic compatibility
ON
OFF
Undervoltage lockout
Start-up time
(See Note 2)
Power up
Power down
ENVIRONMENTAL SPECIFICATIONS
Thermal performance
Operating ambient.
temperature
Non-operating
-40°C to +85°C
-55°C to +125°C
Power up
Remote ON/OFF
PROTECTION
Short-circuit
Over-voltage
Thermal
Continuous
Non-latching
125ºC hot spot temperature with
automatic recovery
International Safety Standard Approvals
UL/cUL CAN/CSA 22.2 No. 60950-00 : UL 60950
File No. E135734
VDE Certificate No. 40005017
CB Report and Certificate to IEC60950, Certificate No. DE1-19783
File Name: eighth_brick.pdf Rev (05): 21 Jun 2004
Eighth-Brick Series
Single output
DC/DC CONVERTERS
High Current, High Efficiency, Low Profile
NEW Product
2
For the most current data and application support visit www.artesyn.com/powergroup/products.htm
INPUT
CURRENT
(MAX.)
(4)
INPUT
RIPPLE
CURRENT
(5)
OUTPUT
CURRENT
(MAX.)
REGULATION
EFFICIENCY
(TYP.)
SET POINT
ACCURACY
MAX
EIGHTH-BRICK SINGLE OUTPUT VALUE MODELS
1.2V
1.5V
1.8V
2.5V
3.3V
5.0V
0.98A
1.21A
1.43A
1.62A
2.11A
1.59A
100mA
100mA
100mA
150mA
150mA
100mA
25A
25A
25A
20A
20A
10A
88.0%
89.5%
90.5%
90.0%
91.0%
92.0%
±1.5%
±1.5%
±1.5%
±1.5%
±1.5%
±1.5%
±0.1%
±0.1%
±0.1%
±0.1%
±0.1%
±0.1%
±0.2%
±0.2%
±0.2%
±0.2%
±0.2%
±0.2%
60mV
60mV
60mV
60mV
60mV
60mV
LES25A48-1V2
LES25A48-1V5
LES25A48-1V8
LES20A48-2V5
LES20A48-3V3
LES10A48-5V0
LINE
LOAD
RIPPLE &
NOISE
(pk - pk)
MODEL
NUMBER
OUTPUT
VOLTAGE
EIGHTH-BRICK SINGLE OUTPUT PERFORMANCE MODELS
1.2V
1.5V
1.8V
2.5V
3.3V
5.0V
1.98A
1.91A
2.30A
1.99A
2.65A
2.30A
150mA
150mA
150mA
200mA
200mA
150mA
50A
40A
40A
25A
25A
15A
86.0%
88.5%
90.0%
89.5%
90.5%
90.5%
±1.5%
±1.5%
±1.5%
±1.5%
±1.5%
±1.5%
±0.1%
±0.1%
±0.1%
±0.1%
±0.1%
±0.1%
±0.2%
±0.2%
±0.2%
±0.2%
±0.2%
±0.2%
60mV
60mV
60mV
60mV
60mV
60mV
LES50A48-1V2
LES40A48-1V5
LES40A48-1V8
LES25A48-2V5
LES25A48-3V3
LES15A48-5V0
EIGHTH-BRICK SINGLE OUTPUT ULTRA MODELS
2.5V
3.3V
5.0V
3.20A
3.20A
3.20A
150mA
150mA
150mA
40A
30A
20A
91.0%
90.5%
92.0%
±1.5%
±1.5%
±1.5%
±0.1%
±0.1%
±0.1%
±0.2%
±0.2%
±0.2%
60mV
60mV
60mV
LES40A48-2V5
LES30A48-3V3
LES20A48-5V0
Part Number System with Options
LES50A48-1V2RA
Body Height, Package Type and Pin Length
A = 0.300” (7.62 mm), Through Hole,
0.188” (4.78 mm) Pins
E = 0.340” (8.64 mm), Through Hole,
0.188” (4.78 mm) Pins
S = Surface Mount
(6)
L
= Low Profile
E
= 1/8 Brick
Number of outputs
S = Single
Rated Output Current
10A = 10 Amps, 15A = 15 Amps etc.
Nominal Rated Input Voltage
48 = 48 Volts (36 to 75V range)
Remote ON/OFF Logic
Blank = Positive
R = Negative
Output Voltage
1V2 = 1.2 Volts, 1V5 = 1.5 Volts etc.
Notes
1
di/dt = 1A/µs, Vin = 48VDC, Tc = 25°C, load change = 50% to 75% lo
max. and 75% to 50% lo max. Deviation varies by model. For further
details see long form data sheets.
Start-up into resistive load.
This product is only for inclusion by professional installers within other
equipment and must not be operated as a stand alone product.
Recommended input fusing is up to 10A HRC 200V rated fuse.
Peak to peak measured with no external Pi filter. Significant reduction
possible with external filter. See Application Note 138 for further details.
Please consult factory to check availability.
CAUTION: Hazardous internal voltages and high temperatures.
Ensure that unit is not user accessible.
2
3
4
5
6
File Name: eighth_brick.pdf Rev (05): 21 Jun 2004
Eighth-Brick Series
Single output
DC/DC CONVERTERS
High Current, High Efficiency, Low Profile
NEW Product
3
For the most current data and application support visit www.artesyn.com/powergroup/products.htm
2.30 (58.4)
2.000 (50.80)
0.145
±0.020
(3.68
±0.51)
0.300
(7.62)
0.300
(7.62)
1
8
7
6
5
4
ø
0.040
±0.002
(
ø
1.02
±0.05)
(6 pls)
0.90
(22.9)
TOP VIEW
2
3
0.150
(3.81)
0.150
(3.81)
0.45
(11.4)
ø
0.062
±0.002
(
ø
1.57
±0.05)
(2 pls)
0.188 (4.78)
HEIGHT
See Option Table
CLEARANCE
See Option Table
2.30 (58.4)
2.000 (50.80)
0.145
±0.020
(3.68
±0.51)
0.300
(7.62)
0.300
(7.62)
1
2
3
8
7
6
5
4
ø
0.058
±0.008
(
ø
1.47
±0.02)
(6 pls)
Ref IPC-2222 Level B
0.90
(22.9)
0.150
(3.81)
0.150
(3.81)
0.45
(11.4)
ø
0.080
±0.008
(
ø
2.03
±0.02)
(2 pls)
Ref IPC-2222 Level B
RECOMMENDED HOLE PATTERN
Dimensions in Inches (mm)
Tolerances (unless otherwise specified)
x.xx
±0.02
(x.x
±0.5)
x.xxx
±0.010
(x.xx
±0.25)
DIMENSION OPTIONS
OPTION
CLEARANCE
±0.016 (0.41)
A
E
0.030 (0.76)
0.070 (1.78)
HEIGHT
+0.022 (0.56)
-0.030 (0.76)
0.300 (7.62)
0.340 (8.64)
PIN CONNECTIONS
PIN NUMBER
1
2
3
4
5
6
7
8
FUNCTION
Vin+
ON/OFF
Vin-
Vout-
Sense-
Trim
Sense+
Vout+
Data Sheet © Artesyn Technologies® 2004
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. The information and specifications contained or described herein are subject to change in any manner at any time 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 Sheets
www.artesyn.com
File Name: eighth_brick.pdf Rev (05): 21 Jun 2004
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