Preliminary Datasheet -
Astec Industry Standard
20 Amps
ALQ/AEQ20B48
Total Power:
Input Voltages:
No. of Outputs:
240W
48
1
Electrical Specs
Input
Input Range
Input Surge
Efficiency
36 to 75 VDC
100V /100ms
93% (Typical)
Output
Line Regulation
Load Regulation
Noise/Ripple
1
Transient Response
± 0.1% (Typical)
± 0.1% (Typical)
60mV (Typical)
5% deviation
(50% to 75% step load)
< 250µs settling time
Special Features
• Quarter brick industry standard outline
• Baseplate or openframe low profile construction
• Industry Standard features : Input UVLO with
hysteresis, Enable, OVP, OCP, OTP, output
Voltage Trim, Differential Remote Sense
• Fixed switching frequency for EMI predictability
• Prebias startup capable
• RoHS compliant
• Meets basic insulation
Over Temperature
Protection
Switching Frequency
Isolation Voltage
Over Current protection 130% I
O
(autorecovery)
Over Voltage protection 120% V
O
(autorecovery)
115ºC average PCB temperature
(autorecovery)
150kHz
2250 Vdc
Control
Enable On/Off
Positive or Negative Logic Options
TTL Compatible
Environmental
Ambient air operating temperature range:
-40°C to +85°C
Storage temperature: -40°C to +125°C
MTBF: > 1 million hours
Safety
UL, cUL 60950 (Pending)
TUV EN60950 (Pending)
1
North America (USA): 1-888-41-ASTEC
Europe (UK): 44 (1384) 842-211
Asia (HK): 852-2437-9662
AMERICAS
5810 Van Allen Way
Carlsbad, CA 92008
Telephone: 760-930-4600
Facsimile: 760-930-0698
EUROPE
Astec House, Waterfront Business Park
Merry Hill, Dudley
West Midlands, DY5 1LX, UK
Telephone: 44 (1384) 842-211
Facsimile: 44 (1384) 843-355
ASIA
Units 2111-2116, Level 21
Tower1, Metroplaza
223, Hing Fong Road
Fwai Fong, New Territories
Hong Kong
Telephone: 852-2437-9662
Facsimile: 852-2402-4426
ALQ / AEQ20B48
Ordering Information
Input
Voltage
36V to 75V
36V to 75V
Output
Voltage
12V
12V
Output
Current
20A
20A
Efficiency
2
93% Typ
93% Typ
Model Number
ALQ20B48(N)-(6)
AEQ20B48(N)-(6)
OPTIONS
(N) : =
(6) : =
ALQ : =
AEQ: =
designates Negatve Logic Enable (default is Positive Enable with no suffix “N” required)
denotes 3.7mm Pin length (default is 5mm)
openframe construction
baseplate construction
Pin Assignments
1.
2.
3.
4.
5.
6.
7.
8.
+ Vin
Enable On/Off
- V
IN
- V
O
- Sense
Trim
+ Sense
+V
O
MECHANICAL OUTLINE
OPENFRAME
PIN Length (inch [mm])
Std : 0.197 [5.0]
“-6” : 0.146 [3.7]
Notes:
1. Measured at 20MHz bandwidth with external 10 uF
tant. capacitor in parallel with 1 uF ceramic capacitor
across +V
O
and -V
O
, T
A
= 25 °C.
2. Efficiency measurements taken at nominal line, V
IN
=
48V, I
O
= 100% load, T
A
= 25 °C.
3. All specifications are considered typical values unless
otherwise noted and are subject to change without
notice.
4. 1 year warranty.
5. Consult factory for further product technical details.
BASEPLATE
Astec Industry Standard
Preliminary Data Sheet. Astec reserves the right to make
changes to the information contained herein without notice
and assumes no liability as a result of its use or application.
(REV A1: JANUARY 9, 2006)
www.astecpower.com
2
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