DC/DC CONVERTERS High Current, High Eciency, Low Prole 1
2YEAR WARRANTY
NEW Product
All specications ar e typical at nominal input, full load at 25 °C ambient unless otherwise stated SPECIFICATIONS
File Name: quarter_brick_dual.pdf Rev (01): 29 Mar 2006
•Two independent outputs
•High full load eciency
•Wide ambient temperature range of -40 ºC to +85 ºC
•Up to 100% load imbalance
•Tracking, monotonic start-up
•Starts into pre-biased outputs
•Basic insulation system
•Over-voltage and over-temperature protection
•100 V, 100 ms input voltage transient response
•Secondary side control, no optocouplers,
fast transient load response
•Available RoHS compliant
These are new high eciency, open-frame, isolated 40 A converters in an industry standard dual
quarter-brick footprint. These converters deliver high output current at low voltages, and excel-
lent useable power density for today’s high end applications. This series features an input volt-
age range of 36 Vdc to 75 Vdcand output voltages of 1.2 V/3.3 V, 1.5 V/3.3 V, 1.8 V/3.3 V 2.5
V/3.3 V, and 5 V/3.3 V
. The output voltage on each model is adjustable from 90% to 110% of
the nominal value. Typical eciencies are 90%. This series also has a remote ON/OFF capabili-
ty. Over-current and over-voltage protection features are included as standard. Designed to
meet international safety agency approvals, including EN60950-1 and UL/cUL60950, this series
reduces compliance costs and time to market.
Quarter-Brick Series
D u a l out p u t
OUTPUT SPECIFICA TIONS
Voltage adjustability Both outputs ±10% min.
%0stuptuo htoBdaol muminiM
Ripple and noise 20 MHz bandwidth 50 mV pk-pk max.
15 mV rms max.
Shor t circuit pr otection Both outputs
Turn-on characteristics Both outputs Monotonic
INPUT SPECIFICATIONS
Input voltage range 48 V nominal 36-75 Vdc
Input cur rent No load 80 mA max.
Remote OFF 6 mA max.
Active high remote ON/OFF
Logic compatibility Open collector ref to -input
cdV 4.2> ro tiucric nepONO
cdV 4.0<FFO
Undervoltage lockout Power up 35.5 V (typ.)
Power down 33.5 V (typ.)
Start-up time Power up 14 ms (typ.)
Remote ON/OFF 14 ms (typ.)
International Safety Standard Approvals
UL/cUL CAN/CSA 22.2 No. 60950-00 : UL 60950
File No. E135734/60950
VDE Certicate No. 10401-3336-0197
EMC CHARACTERISTICS
Immunity:
ESD air enclosure EN61000-4-2 8 kV/6 kV(O/P within spec.)
Radiated eld enclosur e 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 SPECIFICA TIONS
elbat eeSycneiciffE
Basic insulation Input/output 2250 Vdc
Switching fr equency zHk 084dexiF
Approvals and (See Notes 1 and 2) EN60950-1 VDE 05906 LUc/LU sdradnats
0-V49LUytilibammalf lairetaM
)zo 2.1( g 43thgieW
MTBF Telcor dia T ech SR-332 2,883,816 hours
ENVIRONMENTAL SPECIFICATIONS
Thermal performance Operating ambient., -40 °C to +85 °C
temperature
Non-operating -55 °C to +125 °C
PROTECTION
suounitnoC tiucric-trohS
Over gnihctal-noN egatlov
htiw erutarepmet tops toh Cº 521 lamrehT
automatic recovery
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: quarter_brick_dual.pdf Rev (01): 29 Mar 2006
NNootteess
1User must provide recommended fuses in order to comply with safety
approvals. See Application Note 137.
2Maximum continuous output power.
90 Watts for LQD40A48-3V3-1V2J models
96 Watts for LQD40A48-3V3-1V5J models
102 Watts for LQD40A48-3V3-1V8J models
116 Watts for LQD40A48-3V3-2V5J models
67.5 Watts for LQD30A48-3V3-1V2J models
72 Watts for LQD30A48-3V3-1V5J models
76.5 Watts for LQD30A48-3V3-1V8J models
87 Watts for LQD30A48-3V3-2V5J models
99.5 Watts for LQD25A48-5V0-3V3J models
Quarter-Brick Series
Dual output
OUTPUT VOLTAGE OUTPUT OVP EFFICIENCY
NOMINAL INITIAL SET POINT (3) REGULATION BAND CURRENT TRIP POINT (TYP.)
MODEL NUMBER (4,5)
12 1 2 1 2 12 1 2
QUARTER-BRICK DUAL OUTPUT PERFORMANCE MODELS
1.2 V 3.3 V 1.18-1.22 V 3.25-3.35 V 1.16-1.24 V 3.2-3.4 V 20 A 20 A 1.5 V 4 V 90.0% LQD40A48-3V3-1V2J
1.5 V 3.3 V 1.48-1.55 V 3.25-3.35 V 1.44-1.55 V 3.2-3.4 V 20 A 20 A 1.8 V 4 V 90.5% LQD40A48-3V3-1V5J
1.8 V 3.3 V 1.77-1.83 V 3.25-3.35 V 1.75-1.85 V 3.2-3.4 V 20 A 20 A 2 V 4 V 90.5% LQD40A48-3V3-1V8J
2.5 V 3.3 V 2.46-2.54 V 3.25-3.35 V 2.42-2.58 V 3.2-3.4 V 20 A 20 A 3 V 4 V 90.5% LQD40A48-3V3-2V5J
QUARTER-BRICK DUAL OUTPUT VALUE MODELS
1.2 V 3.3 V 1.18-1.22 V 3.25-3.35 V 1.16-1.24 V 3.2-3.4 V 15 A 15 A 1.5 V 4 V 90.0% LQD30A48-3V3-1V2J
1.5 V 3.3 V 1.48-1.52 V 3.25-3.35 V 1.44-1.55 V 3.2-3.4 V 15 A 15 A 1.8 V 4 V 90.5% LQD30A48-3V3-1V5J
1.8 V 3.3 V 1.77-1.83 V 3.25-3.35 V 1.75-1.85 V 3.2-3.4 V 15 A 15 A 2 V 4 V 90.5% LQD30A48-3V3-1V8J
2.5 V 3.3 V 2.46-2.54 V 3.25-3.35 V 2.42-2.58 V 3.2-3.4 V 15 A 15 A 3 V 4 V 91.0% LQD30A48-3V3-2V5J
3.3 V 5 V 3.25-3.35 V 4.92-5.08 V 3.20-3.40 V 4.85-5.15 V 15 A 10 A 4 V 6 V 91.0% LQD25A48-5V0-3V3J
Number of Outputs
D = Dual
LQD40A48-3V3-1V8RANJ(5)
Part Number System with Options
Rated Output Current
(Sum of all outputs)
40 A = 40 Amps
Remote ON/OFF Logic
No Suffix = Positive
Suffix ‘R’ = Negative
Output Voltage of V1
1V8 = 1.8 Volts, 1V2 = 1.2 Volts etc.
Q= 1/4 Brick
Nominal Rated Input Voltage
48 = 48 Volts (36 V to 75 V Range)
Output Voltage of V2
3V3 = 3.3 Volts
L= Low Profile RoHS Compliance (4)
J = Pb-free (RoHS 6/6 compliant)
Pin Length Options
Blank = 0.188” (4.78 mm)
N = 0.145” (3.68 mm)
K = 0.110” (2.79 mm)
Body Height and Package Type
A = 0.300” (7.62 mm), Through-Hole,
E = 0.340” (8.64 mm), Through-Hole,
S = 0.285” (7.24 mm), Surface-Mount
3Io1 = Imax, Io2 = Imax.
4TSE RoHS 5/6 (non Pb-free) compliant versions may be available on
special request, please contact your local sales representative for details.
5The part number cannot exceed 18 characters. If the desired part
number with options contains 19 characters then the last dash ‘-’ in the
part number is removed i.e. LQD25A48-5V0-3V3RAJ becomes
LQD25A48-5V03V3RAJ. If the desired part number with options contains
20 characters then all dashes ‘-’ are removed, i.e. LQD25A48-5V0-
3V3RANJ becomes LQD25A485V03V3RANJ.
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. 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: 4 Application Note 4 Longform Data Sheet www.artesyn.com
File Name: quarter_brick_dual.pdf Rev (01): 29 Mar 2006
PIN CONNECTIONS
PIN NUMBER FUNCTION
1+Vin
2 ON/OFF
3 -Vin
4O/P 1
5O/P RTN
6 Trim
7 O/P 2
DIMENSION OPTIONS
OPTION STAND OFF HEIGHT BODY HEIGHT
A 0.030 (0.76) min. 0.300 (7.62) max.
E 0.070 (1.78) min. 0.340 (8.64) max.
Quarter-Brick Series
Dual output
0.188 (4.78)
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)
1.45
(36.8)
0.725 ±0.020
(18.42 ±0.51)
TOP VIEW
0.350
(8.89)
1
2
34
5
6
7
0.145 ±0.020
(3.68 ±0.51)
0.350
(8.89)
ø0.040±0.002
(ø1.02 ±0.05)
(7 pls)
0.250
(6.35)
0.250
(6.35)
0.125
(3.18)
0.250
(6.35) HEIGHT
(See Option Table)
CLEARANCE
(See Option Table)
2.30 (58.4)
2.000 (50.80)
1.45
(36.8)
0.725 ±0.020
(18.42 ±0.51)
0.350
(8.89)
1
2
34
5
6
7
0.145 ±0.020
(3.68 ±0.51)
0.350
(8.89)
ø0.054±0.003
(ø1.37 ±0.08)
(7 pls)
0.250
(6.35)
0.125
(3.18)
0.250
(6.35)
0.250
(6.35)
Dimensions in Inches (mm)
Tolerances (unless otherwise specified)
x.xx ±0.02 (x.x ±0.5)
x.xxx ±0.010 (x.xx ±0.25)
Lead coplanarity within 0.006 [0.15] MAX
RECOMMENDED PCB LAYOUT
0.250
[6.35]
0.125
[3.18]
0.067[1.70] x 0.118[3.00]
(7 pls)
0.250
[6.35]
ø
0.054±0.003
[ÿ1.37±0.08]
(7 PLS)
0.250
[6.35]
0.125
[3.18]
0.250
[6.35]
0.055[1.40] x 0.105[2.67]
(7 pls)
HEIGHT
0.350
[8.89]
0.725±0.020
[18.42±0.51]
0.057±0.020
[1.45±0.51]
0.057±0.020
[1.45±0.51]
0.350
[8.89]
0.725±0.020
[18.42±0.51]
1.45
[36.8]
0.350
[8.89]
1.45
[36.8]
0.350
[8.89]
2.000
7
1TOP VIEW
3
0.145±0.020
[3.68±0.51]
2
4
0.250
[6.35]
6
5
2.186
[55.52]
2.30
[58.4]
0.250
[6.35]
TOP VIEW
3
1
2
5
4
7
6
2.186
[55.52]
2.30
[58.4]
[50.80]
0.285 [7.24] MAX
0.015 [0.38]
CLEARANCE
Figure 1 - Through-Hole Mechanical Drawing Figure 2 - Surface-Mount Mechanical Drawing
