DC/DC CONVERTERS High Current, High Efficiency, Low Profile 1
2 YEAR WARRANTY
NEW Product
All specifications are typical at nominal input, full load at 25 °C ambient unless otherwise stated SPECIFICATIONS
File Name: eighth_brick.pdf Rev (07): 16 Nov 2005
•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, -40 ºC to +85 ºC
•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
•100 V, 100 ms input voltage transient rated
•Available RoHS compliant
Eighth-Brick Series
Single output
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 100 W 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 18 Vdc to 36 Vdc and 36 Vdc to 75 Vdc and is available with output voltages of
1.2 V, 1.5 V 1.8 V, 2.5 V, 3.3 V and 5.0 V. The output voltage is adjustable from 80% to 110% of
the nominal value. The series also has a remote ON/OFF capability. Overcurrent, overvoltage and
overtemperature protection features are included as standard. Full international safety approval
including EN60950-1 VDE and UL/cUL60950, reduces compliance costs and time to market.
EMC CHARACTERISTICS
Immunity:
ESD air enclosure EN61000-4-2 8 kV/6 kV(O/P within spec.)
Radiated field enclosure EN61000-4-3 10 V/m (O/P within spec.)
Conducted EN61000-4-6 10 V (O/P within spec.)
Input transients 100 V, 100 ms
GENERAL SPECIFICATIONS
Basic insulation Input/output 2250 Vdc
Switching frequency Fixed 480 kHz
Approvals and (See Note 3) EN60950-1 VDE
standards UL/cUL 60950
Material flammability UL94V-0
Weight 21 g (0.73 oz)
MTBF Telcordia Tech SR-332 4,034,120 hours
ENVIRONMENTAL SPECIFICATIONS
Thermal performance Operating ambient. -40 °C to +85 °C
temperature
Non-operating -55 °C to +125 °C
PROTECTION
Shortcircuit Continuous
Overvoltage Non-latching
Thermal 125 ºC hot spot temperature with
automatic recovery
International Safety Standard Approvals
UL/cUL CAN/CSA 22.2 No. 60950-00 : UL 60950
File No. E135734/60950
VDE Certificate No. 40005017. File No. 10401-3336-0197
CB Report and Certificate to IEC60950, Certificate No. DE1-31103
Patent No. 6,765,810
Other Patents Pending
OUTPUT SPECIFICATIONS
Voltage adjustability 80% to 110%
Minimum load 0%
Overshoot At turn-on and turn-off None
Undershoot None
Transient response 60 mV to 150 mV typ. deviation
(See Note 1) 20 µs recovery
INPUT SPECIFICATIONS
Input voltage range 24 V nominal 18-36 Vdc
48 V nominal 36-75 Vdc
Input current No load 50 mA
Remote OFF 5 mA
Active high remote ON/OFF
Logic compatibility Open collector ref to -input
ON Open circuit or >2.4 Vdc
OFF <0.4 Vdc
Undervoltage Lockout
24 Vin Power up 17.5 V (typ.)
Power down 16.5 V (typ.)
48 Vin Power up 35.5 V (typ.)
Power down 33.5 V (typ.)
48 Vin Start-up time Power up 15 ms (typ.)
(See Note 2) Remote ON/OFF 15 ms (typ.)
For the most current data and application support visit www.artesyn.com/powergroup/products.htm
DC/DC CONVERTERS High Current, High Efficiency, Low Profile 2
NEW Product
File Name: eighth_brick.pdf Rev (07): 16 Nov 2005
LES50A48-1V2RANJ
Part Number System with Options
L= Low Profile
E= 1/8 Brick
Number of outputs
S = Single
Rated Output Current
10 A = 10 Amps, 15 A = 15 Amps etc.
Nominal Rated Input Voltage
24 = 24 Volts (18 Vdc to 36 Vdc range)
48 = 48 Volts (36 Vdc to 75 Vdc range)
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
Eighth-Brick Series
Single output
Notes
1di/dt = 1 A/µs, Vin = 24 or 48 Vdc, 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.
2Start-up into resistive load.
3This product is only for inclusion by professional installers within other
equipment and must not be operated as a stand alone product.
4Recommended input fusing is up to 10 A HRC 200 V rated fuse.
5Peak to peak measured with no external Pi filter. Significant reduction
possible with external filter. See Application Note 138 for further details.
6Active low Remote ON/OFF is available. Standard product is Active
High. When ordering active low parts, designate with the Suffix ‘R’ e.g.
LES50A48-1V2RAJ.
7TSE RoHS 5/6 (non Pb-free) compliant versions may be available on
special request, please contact your local sales representative for details.
8NOTICE: 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.
Pin Length Options
Blank = 0.188” (4.78 mm)
N = 0.145” (3.68 mm)
K = 0.110” (2.79 mm)
OUTPUT
INPUT INPUT OUTPUT
EFFICIENCY
REGULATION
MODEL
VOLTAGE
CURRENT RIPPLE CURRENT
(TYP.) SET POINT
LINE LOAD
RIPPLE &
NUMBER (7,8)
(MAX.) (4) CURRENT (5) (MAX.) ACCURACY NOISE
(MAX.) (pk - pk)
48 Vin VALUE MODELS
1.2 V 0.98 A 100 mA 25 A 88% ±1.5% ±0.1% ±0.2% 60 mV LES25A48-1V2J
1.5 V 1.21 A 100 mA 25 A 89.5% ±1.5% ±0.1% ±0.2% 60 mV LES25A48-1V5J
1.8 V 1.43 A 100 mA 25 A 90.5% ±1.5% ±0.1% ±0.2% 60 mV LES25A48-1V8J
2.5 V 1.62 A 150 mA 20 A 90% ±1.5% ±0.1% ±0.2% 60 mV LES20A48-2V5J
3.3 V 2.11 A 150 mA 20 A 91% ±1.5% ±0.1% ±0.2% 60 mV LES20A48-3V3J
5.0 V 1.59 A 100 mA 10 A 92% ±1.5% ±0.1% ±0.2% 60 mV LES10A48-5V0J
48 Vin PERFORMANCE MODELS
1.2 V 1.98 A 150 mA 50 A 86% ±1.5% ±0.1% ±0.2% 60 mV LES50A48-1V2J
1.5 V 1.91 A 150 mA 40 A 88.5% ±1.5% ±0.1% ±0.2% 60 mV LES40A48-1V5J
1.8 V 2.30 A 150 mA 40 A 90% ±1.5% ±0.1% ±0.2% 60 mV LES40A48-1V8J
2.5 V 1.99 A 200 mA 25 A 89.5% ±1.5% ±0.1% ±0.2% 60 mV LES25A48-2V5J
3.3 V 2.65 A 200 mA 25 A 90.5% ±1.5% ±0.1% ±0.2% 60 mV LES25A48-3V3J
5.0 V 2.30 A 150 mA 15 A 91.5% ±1.5% ±0.1% ±0.2% 60 mV LES15A48-5V0J
48 Vin ULTRA MODELS
2.5 V 3.20 A 150 mA 40 A 91% ±1.5% ±0.1% ±0.2% 60 mV LES40A48-2V5J
3.3 V 3.20 A 150 mA 30 A 90.5% ±1.5% ±0.1% ±0.2% 60 mV LES30A48-3V3J
5.0 V 3.20 A 150 mA 20 A 92% ±1.5% ±0.1% ±0.2% 60 mV LES20A48-5V0J
24 Vin MODELS
1.8 V 2.40 A 50 mA 20 A 91% ±1.5% ±0.1% ±0.2% 35 mV LES20A24-1V8J
3.3 V 4.25 A 170 mA 20 A 90% ±1.5% ±0.1% ±0.2% 60 mV LES20A24-3V3J
Output Voltage
1V2 = 1.2 Volts, 1V5 = 1.5 Volts etc.
RoHS Compliance (7)
J = Pb-free (RoHS 6/6 compliant)
Remote ON/OFF Logic
Blank = Positive
R = Negative
For the most current data and application support visit www.artesyn.com/powergroup/products.htm
DC/DC CONVERTERS High Current, High Efficiency, Low Profile 3
NEW Product
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. 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 (07): 16 Nov 2005
Eighth-Brick Series
Single output
DIMENSION OPTIONS
OPTION CLEARANCE HEIGHT
±0.016 (0.41) +0.022 (0.56)
-0.030 (0.76)
A0.030 (0.76) 0.300 (7.62)
E0.070 (1.78) 0.340 (8.64)
2.30 (58.4)
2.000 (50.80)
0.300
(7.62)
0.45
(11.4) ø 0.062 ±0.002
(ø1.57 ±0.05) (2 pls)
1
4
5
6
7
8
3
2
TOP VIEW
ø0.040 ±0.002
(ø1.02 ±0.05) (6 pls)
0.90
(22.9)
0.150
(3.81)
0.300
(7.62)
0.145 ±0.020
(3.68 ±0.51)
0.188 (4.78)
CLEARANCE
See Option Table
HEIGHT
See Option Table
Dimensions in Inches (mm)
Tolerances (unless otherwise specified)
x.xx ±0.02 (x.x ±0.5)
x.xxx ±0.010 (x.xx ±0.25)
2.30 (58.4)
2.000 (50.80)
0.300
(7.62)
ø 0.080 ±0.008
(ø2.03 ±0.02) (2 pls)
Ref IPC-2222 Level B
1
4
5
6
7
8
3
2
ø0.058 ±0.008
(ø1.47 ±0.02) (6 pls)
Ref IPC-2222 Level B
0.300
(7.62)
0.145 ±0.020
(3.68 ±0.51)
RECOMMENDED HOLE PATTERN
0.150
(3.81)
0.150
(3.81)
0.150
(3.81)
0.90
(22.9)
0.45
(11.4)
Dimensions in Inches (mm)
Tolerances (unless otherwise specified)
x.xx ±0.02 (x.x ±0.5)
x.xxx ±0.010 (x.xx ±0.25)
CLEARANCE
0.015 (0.38)
0.300
(7.62)
0.300
(7.62)
0.450±0.020
(11.43±0.51)
0.90
(22.9)
0.300
(7.62)
ø0.058±0.008
(ø1.47±0.02)
(6 PLS)
0.450±0.020
0.90
(22.9)
0.300
(7.62)
0.057±0.020
(1.45±0.51)
0.150
(3.81)
8
1
2.000
TOP VIEW
0.145±0.020
(3.68±0.51)
2
3
5
4
6
7
2.186
(55.52)
2.30
(58.4)
0.057±0.020
(1.45±0.51)
0.150
(3.81)
0.067(1.70) x 0.118(3.00)
(8 pls)
ø0.080±0.008
(ø2.03±0.02)
(2 pls)
0.150
(3.81)
TOP VIEW
3
2
1
4
5
8
6
7
0.150
(3.81)
2.186
(55.52)
2.30
(58.4) 0.055 (1.40) x 0.105 (2.67)
(7 pls)
(50.80)
(11.43±0.51)
HEIGHT
0.28 (7.1)
Lead coplanarity within 0.006 [0.15] MAX
Ref IPC-2222 Level B
Ref IPC-2222 Level B
Through-hole Mechanical Drawing, Dimension Options and Pinout Table
PIN CONNECTIONS
PIN NUMBER FUNCTION PIN NUMBER FUNCTION
1+Vin5-Sense
2ON/OFF 6 Trim
3-Vin7+Sense
4-Vout 8 +Vout
Surface-mount Mechanical Drawing and Pinout Table
PIN CONNECTIONS
PIN NUMBER FUNCTION PIN NUMBER FUNCTION
1+Vin5-Sense
2ON/OFF 6 Trim
3-Vin7+Sense
4-Vout 8 +Vout
Additionally,apatent pending, full wave
coupled inductor topology yields some of
the highest full load efficiencies in the
industry. All Eighth-Brick converters have,
as standard features, remote ON/OFF
capability, adjustable output voltage trim
from 80% to 110% of nominal, over-
current/under-voltage protection, and full
international safety approval including
EN60950-1 VDE and cUL60950.
EIGHTH-BRICK SERIES
Single Output Ultra Products
1
The Eighth-Brick Ultra series is a new
100 W,low cost, high efficiency,open
frame, isolated converter in an industry
standard eighth-brick footprint and
operates from a 36 Vdc to 75 Vdc supply.
This new series elevates the power density
threshold for high-end application design
requirements where high output current at
low voltages are required. The converter
architecturetakes advantage of open-
frame construction to provide low mass
and a low thermal impedance for a single
boarddesign.
High efficiency topology and high output current
Low profile, 0.300 in (7.62 mm) height
Industry standard eighth-brick footprint (identical to quarter-brick pinout)
38% savings in space over industry standard quarter-brick converters
Wide operating ambient temperature range, -40 °C to +85 °C
80% to 110% output trim
Basic insulation, 2250 Vdc
Overvoltage and overtemperature protection
Remote ON/OFF
Approvals to EN60950-1 VDE and UL/cUL60950
100 V, 100 msec input voltage transients rated
Monotonic startup into normal and prebiased loads
Secondary side control, no optocouplers,fast transient response
Available RoHS compliant
High Efficiency, High Current, Low Profile DC-DC Converters
Eighth-Brick Series | 100 W DC-DC
File Name: lf_eighth_brick_100w_ultra.pdf Rev (04): 15 Nov 2005
[2YEAR WARRANTY ]
Patent No. 6,765,810
Other Patents Pending
Absolute Maximum Ratings
Input Characteristics
SXA10 Series | 1
0W DC/DC
Eighth-Brick Series | 100 W DC-DC
High Efficiency, High Current, Low Profile DC-DC Converters
2
Stresses in excess of the maximum ratings can cause permanent damage to the device. Operation of the device is not implied at these or any
other conditions in excess of those given in the specification. Exposure to absolute maximum ratings can adversely affect device
reliability.
All specifications are typical at nominal input Vin = 48 V and full rated resistive load at 25 ˚Cambient unless otherwise specified.
Characteristic Symbol Min Typ Max Units Notes and Conditions
Input voltage - operating Vin (oper) 36 48 75 Vdc
Input current - no load lin 50 mAdc Vin (min) - Vin (max),enabled
Input current - Quiescent lin (off) 6mAdc Converter disabled
Inrush current (i2t) linrush 0.01 A2s
Inrush current ratio It/Im22
Input ripple rejection 50 dB Frequency <1 kHz
Input fuse 10 A Slow Blow/Antisurge HRC
recommended 200 V Rating.
See Application Note 138
Turn On/Off
Characteristic Symbol Min Typ Max Units Notes and Conditions
Input voltage - turn on Vin (on) 35.5 36 Vdc
Input voltage - turn off Vin (off) 33 33.5 Vdc
Turn on delay - enabled, Tdelay 15 20 ms With the Remote ON/OFF signal
then power applied (power) asserted, time from when Vin >
Vin (oper) until Vout is within
total regulation band
Turn on delay - power Tdelay 15 20 ms With Vin = Vin (nom),then
applied, then enabled (enable) Remote ON/OFF asserted,
time until Vo is within total error
band
Rise time Trise 58 ms From 10% to 90%, full resistive
load, no external capacitance
File Name: lf_eighth_brick_100w_ultra.pdf Rev (04): 15 Nov 2005
Characteristic Symbol Min Typ Max Units Notes and Conditions
Input voltage - continuous Vin (cont) -0.3 75 Vdc Vin(+) - Vin(-)
Input voltage - peak/surge Vin (peak) -0.3 100 Vdc Transients of 100 ms or less,
in duration
Input voltage - remote pin Vrem (peak) -0.3 75 Vdc Peaks of any duration
Operating temperature Top -40 85 ˚C Measured at ambient
Storage temperature Tstorage -55 125 ˚C
Output power (LES40A48-2V5J) Pout (max) 100 W
Output power (LES30A48-3V3J) Pout (max) 99 W
Output power (LES20A48-5V0J) Pout (max) 100 W
Eighth-Brick Series | 100 W DC-DC
High Efficiency, High Current, Low Profile DC-DC Converters
3www.artesyn.com
Signal Electrical Interface
Isolation
Characteristic Symbol Min Typ Max Units Notes and Conditions
Input to output test voltage 2250 Vdc Test duration 1s
Input to output capacitance 1200 pF
Input to output resistance 10 MΩ Measured with 500 Vdc
Input to output insulation system
Basic
Characteristic - Signal Name Symbol Min Typ Max Units Notes and Conditions
At remote ON/OFF (control) pin
See Notes 1 and 2
Open collector or equivalent
compatible
Control pin open circuit voltage Vih 2.8 3.5 V Iih = 0 µA; open circuit voltage
High level input voltage Vih 2.4 V Converter guaranteed ON
when control pin is
greater than Vih (min)
High level input current Iih 10 µA Current flowing into control pin
when pin is pulled high
(max. at Vih =75V)
Acceptable high level Iih (leakage) -10 µA Acceptable leakage current from
leakage current signal pin into the open collector
driver (neg = from converter)
Low level input voltage ViI -0.3 0.4 V Converter guaranteed off
when control pin is
less than Vil (max)
Low level input current Iil (max) -0.45 -0.5 mA ViI =0.0 V, maximum source
current from converter with
short circuit
Common Protection/Control
Characteristic Symbol Min Typ Max Units Notes and Conditions
Overtemperatureshutdown Tots 120 125 130 ˚C Hotspot temperature,
threshold non-latching shutdown
protection. See Application
Note 138
Remote sense compensation 10 % % of Vo (nom), compensation
includes trim
Reliability and Service Life
Characteristic Symbol Min Typ Max Units Notes and Conditions
Mean time between failureMTBF 4,034,120 Hours Telcordia Tech. SR-332
Tamb = 25 ºC, Tcase = 20 ºC rise
airflow = 400 LFM,
Vin = Vin (nom),
Iout =50% Iout (max)
File Name: lf_eighth_brick_100w_ultra.pdf Rev (04): 15 Nov 2005
SXA10 Series | 1
0W DC/DC
Eighth-Brick Series | 100 W DC-DC
High Efficiency, High Current, Low Profile DC-DC Converters
4
Environmental Requirements
Other Specifications
Characteristic Symbol Min Typ Max Units Notes and Conditions
Switching frequency fsw 480 kHz Fixed frequency (all models)
EMC
Electromagnetic Compatibility
Phenomenon Port Standard Test level Notes and conditions
Immunity:
ESD Enclosure EN61000-4-2 6 kV contact Level 3, (output within specification)
8kV air Level 3, (output within specification
Radiated field Enclosure EN61000-4-3 10 V/m Level 3, (output within specification) X and Y axes
Conducted DC power EN61000-4-6 10 V
Input transients DC power ETR 283 With recommended Class B external filter, no load, 10J
(output remains within ±9%)
Characteristic Symbol Min Typ Max Units Notes and Conditions
Thermal performance -40 120 ˚C Hotspot temperature
Altitude 3000 m Derate total max. output
current by 20%
9843 ft Derate total max. output
current by 20%
10000 m Derate total max. output
current by 50%
32808 ft Derate total max. output
current by 50%
Type Parameter Reference Test Level
Air temperature IEC 60068-2-1 Ab/Ad: -40 ˚C, 16 h
Cold
IEC 680068-2-2 Bb/Bd:
Dry heat
+70 ˚C, 16 h
IEC 68-2-14 Nb: Rate of -5 ˚C/+45 ˚C, 0.5 ºC/min 2 cycles, 3 h ea
change
Relative humidity IEC60068-2-56 +35 ºC, 93% RH, 4 days
50% of samples powered
Cb: damp heat, steady at 10%
load and 50% unpowered
state
Vibration IEC60068-2-6 3 axes, 5 sweeps per axis unpowered on test card.
Fc: sinusoidal Freq. range and displacement 5-9 Hz, 1.2 mm. Freq. range
and acceleration 9-200 Hz, 10 m/s2
Shock and bump IEC 60068-2-29 100 bumps each of 6 directions, mounted on powered on
Eb: bump test card, shock spectrum half-sine, duration
File Name: lf_eighth_brick_100w_ultra.pdf Rev (04): 15 Nov 2005
Eighth-Brick Series | 100 W DC-DC
5www.artesyn.com
High Efficiency, High Current, Low Profile DC-DC Converters
Material Ratings
Model Numbers
Standards Compliance List
Characteristic
EN60950-1
UL/cUL 60950 3rd edition
VDE
Safety Agency Approvals
Standard Category
UL/cUL 60950 File Number E135734
VDE Certificate No. DE1-31103
Characteristic - Signal Name Notes and Conditions
Flammability rating UL94V-0
Material type FR4 PCB
File Name: lf_eighth_brick_100w_ultra.pdf Rev (04): 15 Nov 2005
Model Input Output Overvoltage Output Current Typical
Number Voltage Voltage Protection (Max.) Efficiency
LES40A48-2V5J 36-75 Vdc 2.5 V 3 V 40 A 91.0%
LES30A48-3V3J 36-75 Vdc 3.3 V 4 V 30 A 90.5%
LES20A48-5V0J 36-75 Vdc 5.0 V 6 V 20 A 92.0%
RoHS Compliance Ordering Information
The ‘J’ at the end of the Partnumber
indicates that the Part is 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.
SXA10 Series | 1
0W DC/DC
Eighth-Brick Series | 100 W DC-DC
High Efficiency, High Current, Low Profile DC-DC Converters
6
Input Characteristics
LES40A48-2V5J Model
Electrical Characteristics - O/P
LES40A48-2V5J Model
Characteristic Symbol Min Typ Max Units Notes and Conditions
Input current - operating Iin 2.29 Adc Vin = Vin (nom); Iout = Iout
(max); Vo= Vo(nom)
Input current - maximum Iin (max.) 3.20 Adc Vin = Vin (min); Iout = Iout
(max); Vo= Vo(nom),
measured at converter
Input Capacitor ripple current Iin (ripple) 50 mA RMS Iout = Iout (max),measured
150 mA pk-pk without standard filter. See
Application Note 138
Reflected ripple current Iin (refl) 2 mA RMS Iout = Iout (max),measured
7.5 mA pk-pk with standard filter. See
Application Note 138
Input capacitance - Cinput 2.65 µF Internal to converter
Internal
Input capacitance - Cbypass 33 µF Recommended customer
External bypass added capacitance, <0.7 Ω ESR
Characteristic Symbol Min Typ Max Units Notes and Conditions
Nominal set-point voltage Vo(nom) 2.46 2.50 2.54 Vdc Vin = Vin (nom); Iout = Iout (nom)
Total regulation band Vo2.42 2.58 Vdc For all line, static load and
temperature until end of life
Line regulation 0.01 0.1 % Iout = Iout (nom), Vin (min)
to Vin (max)
Load regulation 0.02 0.2 % Vin = Vin (nom), Iout (min) to
Iout (max)
Temperature regulation 0.02 ±%/ºC Vin = Vin (nom), Iout = Iout (max)
Output current continuous Iout 0 40 Adc
Output current - shortcircuit Isc 15 A rms Continuous, unit auto recovers
from short, Vo<100 mV
Load transient response - Vdynamic Peak deviation for 50% to 75%
peak deviation 20 mV step load, di/dt = 100 mA/µs,
90 mV step load, di/dt = 1 A/µs
Load transient response - Trecovery 20 µsSettling time to within 1% of
recoveryoutput set point voltage for 50%
to 75% load step
External load capacitance Cext 040,000 µFHigher load capacitance values
may be possible. Contact Artesyn
Technologies for details
Output voltage - noise Vp-p 25 60 mV pk-pk Measurement bandwidth 20 MHz
Vrms 520 mV rms See Application Note 138 for
test set-up
File Name: lf_eighth_brick_100w_ultra.pdf Rev (04): 15 Nov 2005
Eighth-Brick Series | 100 W DC-DC
High Efficiency, High Current, Low Profile DC-DC Converters
7www.artesyn.com
Protection and Control Features
LES40A48-2V5J Model
Efficiency
LES40A48-2V5J Model
Characteristic Symbol Min Typ Max Units Notes and Conditions
Overvoltage setpoint Vov 2.87 3.12 Vdc Non-latching. See Application
Note 138 for details
Overcurrent limit inception Ioc 42 46 50 Adc Vo=90% of Vo(nom)
Output voltage trim range 110 % Trim up (% of Vonom)
Limit O/P to 100 Watts
80 % Trim down (% of Vonom)
See Application Note 138 for
details of trim equations and
trim curves
Open sense voltage 2.50 Vdc
Characteristic Symbol Min Typ Max Units Notes and Conditions
Efficiency η89.5 91.0 % Iout =100% lout (max),
Vin = Vin (nom)
Efficiency η91.5 % Iout =50% Iout (max),
Vin = Vin (nom)
File Name: lf_eighth_brick_100w_ultra.pdf Rev (04): 15 Nov 2005
SXA10 Series | 1
0W DC/DC
Eighth-Brick Series | 100 W DC-DC
High Efficiency, High Current, Low Profile DC-DC Converters
8
Input Characteristics
LES30A48-3V3J Model
Electrical Characteristics - O/P
LES30A48-3V3J Model
Characteristic Symbol Min Typ Max Units Notes and Conditions
Input current - operating Iin 2.28 Adc Vin = Vin (nom); Iout = Iout
(max); Vo= Vo(nom)
Input current - maximum Iin (max.) 3.20 Adc Vin = Vin (min); Iout = Iout
(max); Vo= Vo(nom),
measured at converter
Input Capacitor ripple current Iin (ripple) 50 mA RMS Iout = Iout (max),measured
150 mA pk-pk without standard filter. See
Application Note 138
Reflected ripple current Iin (refl) 2 mA RMS Iout = Iout (max),measured
7.5 mA pk-pk with standard filter. See
Application Note 138
Input capacitance - Cinput 2.65 µF Internal to converter
Internal
Input capacitance - Cbypass 33 µF Recommended customer
External bypass added capacitance, <0.7 Ω ESR
Characteristic Symbol Min Typ Max Units Notes and Conditions
Nominal set-point voltage Vo(nom) 3.25 3.30 3.35 Vdc Vin = Vin (nom); Iout = Iout (nom)
Total regulation band Vo3.20 3.40 Vdc For all line, static load and
temperature until end of life
Line regulation 0.01 0.1 % Iout = Iout (nom), Vin (min)
to Vin (max)
Load regulation 0.02 0.2 % Vin = Vin (nom), Iout (min) to
Iout (max)
Temperature regulation 0.02 ±%/ºC Vin = Vin (nom), Iout = Iout (max)
Output current continuous Iout 0 30 Adc
Output current - shortcircuit Isc 11 A rms Continuous, unit auto recovers
from short, Vo<100 mV
Load transient response - Vdynamic Peak deviation for 50% to 75%
peak deviation 25 mV step load, di/dt = 100 mA/µs,
90 mV step load, di/dt = 1 A/µs
Load transient response - Trecovery 20 µsSettling time to within 1% of
recoveryoutput set point voltage for 50%
to 75% load step
External load capacitance Cext 010,000 µFHigher load capacitance values
may be possible. Contact Artesyn
Technologies for details
Output voltage - noise Vp-p 25 60 mV pk-pk Measurement bandwidth 20 MHz
Vrms 520 mV rms See Application Note 138 for
test set-up
File Name: lf_eighth_brick_100w_ultra.pdf Rev (04): 15 Nov 2005
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Protection and Control Features
LES30A48-3V3J Model
Efficiency
LES30A48-3V3J Model
Characteristic Symbol Min Typ Max Units Notes and Conditions
Overvoltage setpoint Vov 3.80 4.13 Vdc Non-latching. See Application
Note 138 for details
Overcurrent limit inception Ioc 31.5 34.5 37.5 Adc Vo=90% of Vo(nom)
Output voltage trim range 110 % Trim up (% of Vonom)
Limit O/P to 99 Watts
80 % Trim down (% of Vonom)
See Application Note 138 for
details of trim equations and
trim curves
Open sense voltage 3.30 Vdc
Characteristic Symbol Min Typ Max Units Notes and Conditions
Efficiency η89.0 90.5 % Iout =100% lout (max),
Vin = Vin (nom)
Efficiency η92.0 % Iout =50% Iout (max),
Vin = Vin (nom)
File Name: lf_eighth_brick_100w_ultra.pdf Rev (04): 15 Nov 2005
SXA10 Series | 1
0W DC/DC
Eighth-Brick Series | 100 W DC-DC
High Efficiency, High Current, Low Profile DC-DC Converters
10
Input Characteristics
LES20A48-5V0J Model
Electrical Characteristics - O/P
LES20A48-5V0J Model
Characteristic Symbol Min Typ Max Units Notes and Conditions
Input current - operating Iin 2.26 Adc Vin = Vin (nom); Iout = Iout
(max); Vo= Vo(nom)
Input current - maximum Iin (max.) 3.20 Adc Vin = Vin (min); Iout = Iout
(max); Vo= Vo(nom),
measured at converter
Input Capacitor ripple current Iin (ripple) 50 mA RMS Iout = Iout (max),measured
150 mA pk-pk without standard filter. See
Application Note 138
Reflected ripple current Iin (refl) 2 mA RMS Iout = Iout (max),measured
7.5 mA pk-pk with standard filter. See
Application Note 138
Input capacitance - Cinput 2.65 µF Internal to converter
Internal
Input capacitance - Cbypass 33 µF Recommended customer
External bypass added capacitance, <0.7 Ω ESR
Characteristic Symbol Min Typ Max Units Notes and Conditions
Nominal set-point voltage Vo(nom) 4.92 5.00 5.08 Vdc Vin = Vin (nom); Iout = Iout (nom)
Total regulation band Vo4.85 5.15 Vdc For all line, static load and
temperature until end of life
Line regulation 0.01 0.1 % Iout = Iout (nom), Vin (min)
to Vin (max)
Load regulation 0.02 0.2 % Vin = Vin (nom), Iout (min) to
Iout (max)
Temperature regulation 0.02 ±%/ºC Vin = Vin (nom), Iout = Iout (max)
Output current continuous Iout 0 20 Adc
Output current - shortcircuit Isc 7A rms Continuous, unit auto recovers
from short, Vo<100 mV
Load transient response - Vdynamic Peak deviation for 50% to 75%
peak deviation 25 mV step load, di/dt = 100 mA/µs,
100 mV step load, di/dt = 1 A/µs
Load transient response - Trecovery 20 µsSettling time to within 1% of
recoveryoutput set point voltage for 50%
to 75% load step
External load capacitance Cext 010,000 µFHigher load capacitance values
may be possible. Contact Artesyn
Technologies for details
Output voltage - noise Vp-p 45 60 mV pk-pk Measurement bandwidth 20 MHz
Vrms 10 20 mV rms See Application Note 138 for
test set-up
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Protection and Control Features
LES20A48-5V0J Model
Efficiency
LES20A48-5V0J Model
Characteristic Symbol Min Typ Max Units Notes and Conditions
Overvoltage setpoint Vov 5.8 6.5 Vdc Non-latching. See Application
Note 138 for details
Overcurrent limit inception Ioc 21 23 25 Adc Vo=90% of Vo(nom)
Output voltage trim range 110 % Trim up (% of Vonom)
Limit O/P to 100 Watts
80 % Trim down (% of Vonom)
See Application Note 138 for
details of trim equations and
trim curves
Open sense voltage 5.0 Vdc
Characteristic Symbol Min Typ Max Units Notes and Conditions
Efficiency η91.0 92.0 % Iout =100% lout (max),
Vin = Vin (nom)
Efficiency η92.5 % Iout =50% Iout (max),
Vin = Vin (nom)
File Name: lf_eighth_brick_100w_ultra.pdf Rev (04): 15 Nov 2005
Figure 6: Typical Transient Response 75-50%
Step Load Change (1 A/µs), Top (Vout) Bottom (Iout)
25 35 45 55 65 75 85
0
10
20
30
40
50
OUTPUT CURRENT (A)
AMBIENT TEMPERATURE (ºC)
0.5 m/s (100 LFM)
1 m/s (200 LFM)
1.5 m/s (300 LFM)
2 m/s (400 LFM)
35 45 55 65 75
84
86
88
90
92
94
EFFICIENCY (%)
INPUT VOLTAGE (V)
Figure 1: Derating Curve with Forced Air Figure 2: Efficiency vs. Line
Figure 3: Efficiency vs. Load
0510 15 20 25 30 35 40
60
70
80
90
100
EFFICIENCY (%)
OUTPUT CURRENT (A)
36 Vin
48 Vin
75 Vin
LES40A48-2V5J Model
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Eighth-Brick Series | 100 W DC-DC
High Efficiency, High Current, Low Profile DC-DC Converters
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Figure4: Turn-On Characteristic,
Top (Vout), Bottom (Vin)
Figure5: Control On/Off Characteristic,
Top (Vout), Bottom (Remote ON/OFF)
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Figure 7: Typical Transient Response 50-75%
Step Load Change (1 A/µs), Top (Vout) Bottom (Iout)
Figure 8: Typical Output Ripple and Noise Measurement
Figure 9: Current Limit Characteristic
LES40A48-2V5J Model
Figure10: Turn-OffCharacteristic
File Name: lf_eighth_brick_100w_ultra.pdf Rev (04): 15 Nov 2005
Figure 16: Typical Transient Response 75-50%
Step Load Change (1 A/µs), Top (Vout) Bottom (Iout)
25 35 45 55 65 75 85
0
5
10
15
20
25
30
35
OUTPUT CURRENT (A)
AMBIENT TEMPERATURE (ºC)
0.5 m/s (100 LFM)
1 m/s (200 LFM)
1.5 m/s (300 LFM)
2 m/s (400 LFM)
35 43 51 59 67 75
82
84
86
88
90
92
EFFICIENCY (%)
INPUT VOLTAGE (V)
Figure 11: Derating Curve with Forced Air Figure 12: Efficiency vs. Line
Figure 13: Efficiency vs. Load
0510 15 20 25 30
60
70
80
90
100
EFFICIENCY (%)
OUTPUT CURRENT (A)
36 Vin
48 Vin
75 Vin
LES30A48-3V3J Model
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Eighth-Brick Series | 100 W DC-DC
High Efficiency, High Current, Low Profile DC-DC Converters
14
Figure14: Turn-On Characteristic,
Top (Vout), Bottom (Vin)
Figure15: Control On/Off Characteristic,
Top (Vout), Bottom (Remote ON/OFF)
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Figure 17: Typical Transient Response 50-75%
Step Load Change (1 A/µs), Top (Vout) Bottom (Iout)
Figure 18: Typical Output Ripple and Noise Measurement
Figure 19: Current Limit Characteristic
LES30A48-3V3J Model
Figure20: Turn-OffCharacteristic
File Name: lf_eighth_brick_100w_ultra.pdf Rev (04): 15 Nov 2005
Figure 26: Typical Transient Response 75-50%
Step Load Change (1 A/µs), Top (Vout) Bottom (Iout)
25 55 70 85
0
5
10
15
20
OUTPUT CURRENT (A)
AMBIENT TEMPERATURE (ºC)
40
0.5 m/s (100 LFM)
1m/s (200 LFM)
1.5 m/s (300 LFM)
2m/s (400 LFM)
35 43 51 59 67 75
84
86
88
90
92
94
EFFICIENCY (%)
INPUT VOLTAGE (V)
Figure 21: Derating Curve with Forced Air Figure 22: Efficiency vs. Line
Figure 23: Efficiency vs. Load
0510 15 20
60
70
80
90
100
EFFICIENCY (%)
OUTPUT CURRENT (A)
36Vin
48 Vin
75Vin
LES20A48-5V0J Model
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Figure24: Turn-On Characteristic,
Top (Vout), Bottom (Vin)
Figure25: Control On/Off Characteristic,
Top (Vout), Bottom (Remote ON/OFF)
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Figure 27: Typical Transient Response 50-75%
Step Load Change (1 A/µs), Top (Vout) Bottom (Iout)
Figure 28: Typical Output Ripple and Noise Measurement
Figure 29: Current Limit Characteristic
LES20A48-5V0J Model
Figure30: Turn-OffCharacteristic
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18 File Name: lf_eighth_brick_100w_ultra.pdf Rev (04): 15 Nov 2005
2.30 (58.4)
2.000 (50.80)
0.300
(7.62)
0.45
(11.4)
ø
0.062 ±0.002
(
ø
1.57 ±0.05) (2 pls)
1
4
5
6
7
8
3
2
TOP VIEW
ø
0.040 ±0.002
(
ø
1.02 ±0.05) (6 pls)
0.90
(22.9)
0.150
(3.81)
0.300
(7.62)
0.145 ±0.020
(3.68 ±0.51)
0.188 (4.78)
CLEARANCE
See Option Table
HEIGHT
See Option Table
Dimensions in Inches (mm)
Tolerances (unless otherwise specified)
x.xx ±0.02 (x.x ±0.5)
x.xxx ±0.010 (x.xx ±0.25)
2.30 (58.4)
2.000 (50.80)
0.300
(7.62)
ø
0.074 ±0.003
(
ø
1.88 ±0.08) (2 pls)
1
4
5
6
7
8
3
2
ø
0.054 ±0.00
(
ø
1.37 ±0.08) (6 pls)
0.300
(7.62)
0.145 ±0.020
(3.68 ±0.51)
RECOMMENDED HOLE PATTERN
0.150
(3.81)
0.150
(3.81)
0.150
(3.81)
0.90
(22.9)
0.45
(11.4)
Pin Connections
Pin No. Function
1 Vin+
2 ON/OFF
3 Vin-
4 Vout-
5 Sense-
6 Trim
7 Sense+
8 Vout+
Dimensions in Inches (mm)
Tolerances (unless otherwise specified)
x.xx ±0.02 (x.x ±0.5)
x.xxx ±0.010 (x.xx ±0.25)
CLEARANCE
0.015 (0.38)
0.300
(7.62)
0.300
(7.62)
0.450±0.020
(11.43±0.51)
0.90
(22.9)
0.300
(7.62)
ø0.058±0.008
(ø1.47±0.02)
(6 PLS)
0.450±0.020
0.90
(22.9)
0.300
(7.62)
0.057±0.020
(1.45±0.51)
0.150
(3.81)
8
1
2.000
TOP VIEW
0.145±0.020
(3.68±0.51)
2
3
5
4
6
7
2.186
(55.52)
2.30
(58.4)
0.057±0.020
(1.45±0.51)
0.150
(3.81)
0.067(1.70) x 0.118(3.00)
(8 pls)
ø0.080±0.008
(ø2.03±0.02)
(2 pls)
0.150
(3.81)
TOP VIEW
3
2
1
4
5
8
6
7
0.150
(3.81)
2.186
(55.52)
2.30
(58.4) 0.055 (1.40) x 0.105 (2.67)
(7 pls)
(50.80)
(11.43±0.51)
HEIGHT
0.28 (7.1)
Lead coplanarity within 0.006 [0.15] MAX
Ref IPC-2222 Level B
Ref IPC-2222 Level B
Figure32 - Surface-mount Mechanical Drawing and Pinout T
able
Figure31 - Through-hole Mechanical Drawing, Dimension Options and Pinout Table
Dimension Options
Option Clearance Height
±0.016 (0.41) +0.022 (0.56)
-0.030 (0.76)
A 0.030 (0.76)) 0.300 (7.62)
E 0.070 (1.78) 0.340 (8.64)
Pin Connections
Pin No. Function
1Vin+
2ON/OFF
3 Vin-
4Vout-
5Sense-
6 Trim
7Sense+
8Vout+
SXA10 Series | 1
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Eighth-Brick Series | 100 W DC-DC
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Note 1
The remote ON/OFF pin is referenced to Vin-.
Note 2
Active low Remote ON/OFF is available. Standard product is
active high. When ordering active low parts, designate with the
Suffix R e.g. LES40A48-2V5RAJ. See Application Note 138 for
detailed information regarding ON/OFF control implementation.
CAUTION: Hazardous internal voltages and high temperatures.
Ensure that unit is accessible only to trained personnel. The user
must provide the recommended fusing in order to comply with
safety approvals.
19 www.artesyn.com File Name: lf_eighth_brick_100w_ultra.pdf Rev (04): 15 Nov 2005
LongformDatasheet 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.
Eighth-Brick Series | 100 W DC-DC
High Efficiency, High Current, Low Profile DC-DC Converters
NORTH AMERICA
e-mail: sales.us@artesyn.com
%800 769 7274
%+508 628 5600
EUROPEAN LOCATIONS
e-mail: sales.europe@artesyn.com
IRELAND
%+353 24 93130
AUSTRIA
%+43 1 80150
FAR EAST LOCATIONS
e-mail: sales.asia@artesyn.com
HONG KONG
%+852 2699 2868
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