Embedded Power for
Business-Critical Continuity
ALQ/AEQ42B50
Quarter-Brick Series
Fixed Ratio
2nd Generation IBC
Total Power:
500 Watts
Input Voltage:
36 - 55 Vdc
Output Voltage:
12 Vdc
Rev. 11.14.08__111
ALQ/AEQ42B50
1 of 3
Special Features
• 48 V input with isolated 12 V
output
• Ultra-high efficiency, 97%
• Unprecedented usable output
power levels
• High power density open-frame
or baseplate technology
• Wide operating ambient
temperature range
• Meets basic insulation
requirements of EN60950-1
• Remote ON/OFF and
overtemperature protection
• Redundant output pins
• RoHS compliant
• 2 year warranty
Electrical Specifications
Output
Total error band:
(including setpoint, line,
load and temperature)
36 - 55 V
8.5 - 13.75 V
Minimum load:
Overshoot:
At turn-on and turn-off
Undershoot:
Ripple and noise 5 - 20 mHz:
(See Note 2)
0A
None
None
100 mV pk - pk typ.
36 - 55 V
11 A max. @ lo max. and Vin = min. rated
>2.95 V
<1.20 V
35 V
33 V
11 ms
2 ms
10 W (Vin = Vin, nom)
Input
Input voltage range:
Input current (max.):
Remote ON/OFF:
ON:
OFF:
Undervoltage lockout:
Start-up time:
Standing loss:
(See Note 1)
Power up
Power down
Power up
Remote ON/OFF
Safety
• UL, cUL
• TUV
EN60950-1
EN60950-1
Embedded Power for
Business-Critical Continuity
Rev. 11.14.08_111
ALQ/AEQ42B50
2 of 3
General Specifications
Efficiency:
Isolation voltage:
Switching frequency:
Material flammability:
Weight:
Demonstrated life test:
Input/output
Fixed
97%
1500 Vdc
195 KHz typ.
UL94V-0
TBD
> 1.4 M Hrs.
Pin Connections
Single Output
1. +Vin
2. Remote on/off
3. -Vin
4. -Vout
5. -Vout
9. +Vout
10. +Vout
Notes:
1. Recommended input fusing is a 20 A HRC 250 V rated
fuse.
2. Measured at 20 MHz bandwidth with external 10
uF tant. capacitor in parallel with 0.1 uF @ 50 V X7R
ceramic capacitor placed across +Vout and -Vout,
T
a
= 25 ºC.
3. Efficiency measurements taken at full load, nominal
input, T
a
= 25 ºC, airflow at 200 LFM.
4. Through-hole termination intended for wave soldering
process.
5. All specifications are considered typical values unless
otherwise noted and are subject to change without
notice.
6. All dimensions are provided in inches [millimeters].
Pin placement tolerance: ± 0.005 [0.127]. Mechanical
tolerance: ± 0.02 [0.50].
7. 2 year warranty.
48 Vin, 40
ºC, 50 % load
Environmental Specifications
Thermal performance:
Operating ambient
temperature
Non-operating
-40 ºC to +85 ºC
-55 ºC to +125 ºC
Protection
Short-circuit:
Thermal:
Input overvoltage
protection (autorecovery):
Hiccup
115 ºC hot spot
57.0 - 59.5 V
55.0 - 58.0 V
T - On threshold
T - Off threshold
Ordering Information
Output
Power
500 W
500 W
Input
Voltage
36 - 55 V
36 - 55 V
Output
Voltage
12 V
12 V
Overall Output
Regulation
8.5 - 13.75 V
8.5 - 13.75 V
Output
Efficiency
Current
42 A
42 A
97%
97%
Model Number
ALQ42B50(N)-(6)L
AEQ42B50(N)-(6)L
Construction
Low profile Open-frame
Baseplate
Notes / options:
Suffix “-6” : 3.7 mm pin length (default is 5 mm)
Suffix “N” : Designates negative logic enable (default is positive logic with no suffix “N” required)
Embedded Power for
Business-Critical Continuity
Mechanical Drawing
ALQ-Open-frame
2.30
[58.4]
Americas
5810 Van Allen Way
Carlsbad, CA 92008
USA
Telephone: +1 760 930 4600
Facsimile: +1 760 930 0698
Rev. 11.14.08_111
ALQ/AEQ42B50
3 of 3
PIN NUMBER
PIN 1
1.48
[37.6]
DESIGNATION
+Vin
Enable
-Vin
-Vout
-Vout
PIN 2
PIN 3
PIN 4
PIN 5
PIN SIDE DOWN
0.42
[10.7]
0.189[4.8 ] min
0.205[5.2] max
Waterfront Business Park
Merry Hill, Dudley
+Vout
PIN 9
West Midlands, DY5 1LX
+Vout
PIN 10
United Kingdom
TP7 & TP8 - ARE TEST PADS USE FOR PROGRAMMING THE MODULE.
Telephone: +44 (0) 1384 842 211
Facsimile: +44 (0) 1384 843 355
RECOMMENDED PAD LAY OUT
?0.063
+0.004
-0
[?1.60
+0.10
]
-0
FIN. HOLE SIZE
(3 PLACES)
Europe (UK)
Asia (HK)
SIZE
FIN. HOLE
?0.071
+0.004
-0
[?1.80
+0.10
]
-0
SIDE VIEW
0.15
[3.8]
2.00
[50.8]
1.88
[47.8]
0.30
[7.6]
0.60
[15.2]
0.60
[15.2]
0.30
[7.6]
C
L
1.88
[47.8]
2.00
[50.8]
0.74
[18.8]
?0.102
[?2.60]
PAD SIZE
(3 PLACES)
(4 PLACES)
14/F, Lu Plaza
2 Wing Yip Street
Kwun Tong, Kowloon
Hong Kong
?0.110
Telephone: +852 2176 3333
[?2.80]
Facsimile: +852 2176 3888
PAD SIZE
(4 PLACES)
0.30
[7.6]
3
2
1
4
5
For global contact, visit:
NOTES:
www.powerconversion.com
ALL DIMENSIONS ARE IN INCHES (MILLIMETERS)
PIN PLACEMENT TOLERANCE : ± 0.005(0.127)
techsupport.embeddedpower
MECHANICAL TOLERANCE ± .002(0.5)
C
L
10
9
0.30
[7.6]
@emerson.com
Ø 0.040 (1.00) DIA PINS (3 PLCS)
PIN SIDE UP
Ø 0.062 (1.57) DIA PINS (4 PLCS)
AEQ-Baseplate
While every precaution has been taken to ensure
accuracy and completeness in this literature, Emerson
Network Power assumes no responsibility, and disclaims
all liability for damages resulting from use of this
information or for any errors or omissions.
PIN NUMBER
PIN 1
PIN 2
PIN 3
DESIGNATION
+Vin
Enable
-Vin
-Vout
-Vout
+Vout
+Vout
2.30
[58.4]
Emerson Network Power.
The global leader in enabling
business-critical continuity.
AC Power
Connectivity
DC Power
Embedded Computing
Embedded Power
?0.071
Monitoring
SIZE
FIN. HOLE
[?1.80
+0.004
-0
+0.10
-0
]
1.48
[37.6]
PIN 4
PIN 5
PIN 9
PIN 10
PIN SIDE DOWN
TP7 & TP8 - ARE TEST PADS USE FOR PROGRAMMING THE MODULE.
RECOMMENDED PAD LAY OUT
0.52
[13.2]
0.189[4.8 ] min
0.205[5.2] max
0.30
[7.6]
?0.063
+0.004
-0
[?1.60
+0.10
]
-0
FIN. HOLE SIZE
(3 PLACES)
0.74
[18.8]
0.15
[3.8]
2.00
[50.8]
1.88
[47.8]
0.30
[7.6]
0.60
[15.2]
SIDE VIEW
0.60
[15.2]
C
L
1.88
[47.8]
2.00
[50.8]
Outside Plant
Power Switching & Controls
Precision Cooling
?0.110
Racks & Integrated Cabinets
[?2.80]
(4
Services
PLACES)
PAD SIZE
(4 PLACES)
0.30
[7.6]
?0.102
[?2.60]
PAD SIZE
(3 PLACES)
3
2
1
0.30
[7.6]
4
5
C
L
10
9
NOTES:
Surge Protection
ALL DIMENSIONS ARE IN INCHES (MILLIMETERS)
PIN PLACEMENT TOLERANCE : ± 0.005(0.127)
MECHANICAL TOLERANCE ± .002(0.5)
EmersonNetworkPower.com
Ø 0.040 (1.00) DIA PINS (3 PLCS)
PIN SIDE UP
Ø 0.062 (1.57) DIA PINS (4 PLCS)
Emerson Network Power and the Emerson
Network Power logo are trademarks and
service marks of Emerson Electric Co.
©2008 Emerson Electric Co.
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