Quarter-Brick Series
Dual output
DC/DC CONVERTERS
•
•
•
•
•
•
•
•
•
•
High Current, High Efficiency, Low Profile
NEW Product
1
Two independent outputs
High full load efficiency
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 efficiency, 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 Vdc and 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 efficiencies 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.
All specifications are typical at nominal input, full load at 25 °C ambient unless otherwise stated
Patent No. 6,765,810
Other Patents Pending
2 YEAR WARRANTY
SPECIFICATIONS
OUTPUT SPECIFICATIONS
Voltage adjustability
Minimum load
Ripple and noise
Short circuit protection
Turn-on characteristics
INPUT SPECIFICATIONS
Input voltage range
Input current
48 V nominal
No load
Remote OFF
36-75 Vdc
80 mA max.
6 mA max.
Open collector ref to -input
Open circuit or >2.4 Vdc
<0.4 Vdc
35.5 V (typ.)
33.5 V (typ.)
14 ms (typ.)
14 ms (typ.)
Both outputs
Both outputs
Both outputs
20 MHz bandwidth
±10% min.
0%
50 mV pk-pk max.
15 mV rms max.
Both outputs
Monotonic
EMC CHARACTERISTICS
Immunity:
ESD air enclosure
Radiated field enclosure
Conducted
Input transients
EN61000-4-2 8 kV/6 kV(O/P within spec.)
EN61000-4-3 10 V/m (O/P within spec.)
EN61000-4-6 10 V
(O/P within spec.)
100 V, 100 ms
GENERAL SPECIFICATIONS
Efficiency
Basic insulation
Switching frequency
Approvals and
standards
Material flammability
Weight
MTBF
Input/output
Fixed
(See Notes 1 and 2)
See table
2250 Vdc
480 kHz
EN60950-1 VDE
UL/cUL 60950
UL94V-0
34 g (1.2 oz)
Telcordia Tech SR-332 2,883,816 hours
Active high remote ON/OFF
Logic compatibility
ON
OFF
Undervoltage lockout
Start-up time
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
Overvoltage
Thermal
Continuous
Non-latching
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. 10401-3336-0197
File Name: quarter_brick_dual.pdf Rev (01): 29 Mar 2006
Quarter-Brick Series
Dual 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
OUTPUT VOLTAGE
NOMINAL
1
2
INITIAL SET POINT
1
2
(3)
OUTPUT
REGULATION BAND
1
2
CURRENT
1
2
OVP
TRIP POINT
1
2
EFFICIENCY
(TYP.)
MODEL NUMBER
(4,5)
QUARTER-BRICK DUAL OUTPUT PERFORMANCE MODELS
1.2 V 3.3 V
1.5 V 3.3 V
1.8 V 3.3 V
2.5 V 3.3 V
1.18-1.22 V
1.48-1.55 V
1.77-1.83 V
2.46-2.54 V
3.25-3.35 V
3.25-3.35 V
3.25-3.35 V
3.25-3.35 V
1.16-1.24 V
1.44-1.55 V
1.75-1.85 V
2.42-2.58 V
3.2-3.4 V
3.2-3.4 V
3.2-3.4 V
3.2-3.4 V
20 A 20 A
20 A 20 A
20 A 20 A
20 A 20 A
1.5 V
1.8 V
2V
3V
4V
4V
4V
4V
90.0%
90.5%
90.5%
90.5%
LQD40A48-3V3-1V2J
LQD40A48-3V3-1V5J
LQD40A48-3V3-1V8J
LQD40A48-3V3-2V5J
QUARTER-BRICK DUAL OUTPUT VALUE MODELS
1.2 V 3.3 V
1.5 V 3.3 V
1.8 V 3.3 V
2.5 V 3.3 V
3.3 V
5V
1.18-1.22 V
1.48-1.52 V
1.77-1.83 V
2.46-2.54 V
3.25-3.35 V
3.25-3.35 V
3.25-3.35 V
3.25-3.35 V
3.25-3.35 V
4.92-5.08 V
1.16-1.24 V
1.44-1.55 V
1.75-1.85 V
2.42-2.58 V
3.20-3.40 V
3.2-3.4 V
3.2-3.4 V
3.2-3.4 V
3.2-3.4 V
4.85-5.15 V
15 A 15 A
15 A 15 A
15 A 15 A
15 A 15 A
15 A 10 A
1.5 V
1.8 V
2V
3V
4V
4V
4V
4V
4V
6V
90.0%
90.5%
90.5%
91.0%
91.0%
LQD30A48-3V3-1V2J
LQD30A48-3V3-1V5J
LQD30A48-3V3-1V8J
LQD30A48-3V3-2V5J
LQD25A48-5V0-3V3J
Part Number System with Options
L Q D 4 0 A 4 8 - 3 V 3 - 1 V 8 R A N J
(5)
L
= Low Profile
Q
= 1/4 Brick
Number of Outputs
D = Dual
Rated Output Current
(Sum of all outputs)
40 A = 40 Amps
Nominal Rated Input Voltage
48 = 48 Volts (36 V to 75 V Range)
Output Voltage of V2
3V3 = 3.3 Volts
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
Remote ON/OFF Logic
No Suffix = Positive
Suffix ‘R’ = Negative
Output Voltage of V1
1V8 = 1.8 Volts, 1V2 = 1.2 Volts etc.
Notes
1
2
User must provide recommended fuses in order to comply with safety
approvals. See Application Note 137.
Maximum 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
3
4
5
I
o1
= Imax, I
o2
= Imax.
TSE RoHS 5/6 (non Pb-free) compliant versions may be available on
special request, please contact your local sales representative for details.
The 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.
File Name: quarter_brick_dual.pdf Rev (01): 29 Mar 2006
Quarter-Brick Series
Dual 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]
2.30 (58.4)
0.145
±0.020
(3.68
±0.51)
2.000 (50.80)
ø0.040±0.002
(ø1.02
±0.05)
(7 pls)
0.250
(6.35)
7
6
5
4
0.250
(6.35)
0.125
(3.18)
HEIGHT
(See Option Table)
0.057±0.020
[1.45±0.51]
2.186
[55.52]
0.055[1.40] x 0.105[2.67]
(7 pls)
0.250
[6.35]
1
TOP VIEW
7
6
5
3
4
0.250
[6.35]
0.250
[6.35]
HEIGHT
0.285 [7.24] MAX
0.125
[3.18]
TOP VIEW
1.45
(36.8)
0.350
(8.89)
0.350
(8.89)
1
2
3
1.45
[36.8]
0.350
[8.89]
0.350
[8.89]
2
0.250
(6.35)
0.725
±0.020
(18.42
±0.51)
0.725±0.020
[18.42±0.51]
Lead coplanarity within 0.006 [0.15] MAX
CLEARANCE
(See Option Table)
CLEARANCE
0.015 [0.38]
0.188 (4.78)
2.30
[58.4]
ø
0.054±0.003
[ÿ1.37±0.08]
(7 PLS)
2.186
[55.52]
0.067[1.70] x 0.118[3.00]
(7 pls)
0.250
[6.35]
2.30 (58.4)
0.145
±0.020
(3.68
±0.51)
2.000 (50.80)
ø0.054±0.003
(ø1.37
±0.08)
(7 pls)
0.057±0.020
[1.45±0.51]
0.250
(6.35)
1.45
(36.8)
0.350
(8.89)
0.350
(8.89)
1
2
3
7
6
5
4
0.250
(6.35)
0.250
(6.35)
0.125
(3.18)
Dimensions in Inches (mm)
Tolerances (unless otherwise specified)
x.xx
±0.02
(x.x
±0.5)
x.xxx
±0.010
(x.xx
±0.25)
1.45
[36.8]
1
0.350
[8.89]
0.350
[8.89]
2
3
TOP VIEW
7
6
5
4
0.250
[6.35]
0.250
[6.35]
0.125
[3.18]
0.725±0.020
[18.42±0.51]
0.145±0.020
[3.68±0.51]
2.000
[50.80]
0.725
±0.020
(18.42
±0.51)
RECOMMENDED PCB LAYOUT
Dimensions in Inches (mm)
Tolerances (unless otherwise specified)
x.xx
±0.02
(x.x
±0.5)
x.xxx
±0.010
(x.xx
±0.25)
Figure 1 - Through-Hole Mechanical Drawing
Figure 2 - Surface-Mount Mechanical Drawing
PIN CONNECTIONS
PIN NUMBER
1
2
3
4
5
6
7
FUNCTION
+Vin
ON/OFF
-Vin
O/P 1
O/P RTN
Trim
O/P 2
OPTION
A
E
DIMENSION OPTIONS
STAND OFF HEIGHT
0.030 (0.76) min.
0.070 (1.78) min.
BODY HEIGHT
0.300 (7.62) max.
0.340 (8.64) max.
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:
Application Note
Longform Data Sheet
www.artesyn.com
File Name: quarter_brick_dual.pdf Rev (01): 29 Mar 2006
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