100 Watts
ALQ20-Dual
High Efficiency
Total Power:
Input Voltages:
No. of Outputs:
100 Watts
48V
Dual
Electrical Specs
Input
Input Range
Input Surge
Efficiency
2
36 to 75 VDC
100V /100ms
3.3V/1.5V @ 90%
3.3V/1.2V @ 90%
Output
Line / Load Regulation
Load Current
Noise/Ripple
1
Transient Response
< 1% Vo
20A max per channel
30mV
PK-PK
typical
40mV typical deviation
(50% to 75% Step Load)
< 300µs settling time (typ)
130% Vo Typ (latching)
130% I
O,max
Typ (autorecovery)
115ºC average PCB temperature
(autorecovery)
410kHz (typ)
1500Vdc
Special Features
Industry standard Dual O/p 1/4 Brick Footprint
Open Frame Construction
Low Ripple and Noise
1
< 30mV
PK-PK
Regulation to zero load
High Capacitive Load start-up
Fixed Frequency Switching for EMI predictability
Industry Standard features: OVP, OCP, OTP,
Input UVLO, Enable, Trim
• Input Under Voltage Lockout with hysteresis
• Output Voltage Adjustability
• Meets Basic Insulation
•
•
•
•
•
•
•
Over Voltage Protection
Over Current Protection
Over Temperature
Protection
Switching Frequency
Isolation Voltage
Control
Voltage Adjust
Enable
±10% V
O,NOM
TTL compatible
(Positive or Negative options)
Environmental
Operating Ambient Temperature -40°C to +85°C
Storage temperature: -55°C to +125°C
MTBF: > 1 Million Hrs
Safety
UL, cUL 60950 Recognized (Pending)
TUV EN60950 Licensed (Pending)
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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
Ordering Information
Input Volatge
Output Voltage
Vo1
Vo2
Output Current
Io1
Io2
Efficiency
2
Model Number
36V to 75V
36V to 75V
36V to 75V
3.3V
3.3V
3.3V
1.5V
1.2V
1.2V
20A
20A
15A
20A
20A
15A
90%
90%
90%
ALQ20FM48(N) - (6)
ALQ20FK48(N) - (6)
ALQ15FK48(N) - (6)
OPTIONS:
Enable Function "N" = Negative Logic Enable (default is Positive Logic Enable - no suffix “N”)
Pin Length
“-6” = 3.7mm nominal pin length (default is 5mm nominal - no suffix “6”)
Pin Assignment
Dual Output
1. +Vin
2. Enable (On/Off)
3. -Vin
4. +V
O2
5. Secondary Return/Ground
6. Trim
7. +V
O1
Mechanical Outline
Notes:
1. 20 MHz bandwidth. External 10 uF tant. capacitor in
parallel with 1 uF ceramic capacitor placed output
and secondary return ground.
2. Efficiency measurements taken at full load - balanced
output load current, nominal line and T
A
= 25°C.
3. All specifications are typical at nominal line, full load
and T
A
= 25°C unless otherwise noted.
4. All specifications subject to change without notice.
Mechanical drawings are for reference only
5. Technical Reference Notes should be consulted for
detailed information when available
6. Warranty 1yr.
This is a 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 and application.
(REV A: APRIL12, 2004)
Dimensions are in inches [millimeters]
Pin placement tolerance ± 0.005 [0.127]
Mechanical Tolerance ± 0.02 [0.5]
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