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Special Features
Electrical Specs
300 Watts
• High efficiency (96% Typical)
• -40°C to +100°C Ambient Air Operation
• Industry standard package Qtr Brick
1.48" x 2.30" x 0.40"
• High capacitive load limit on start-up
• 12V @ 25A Intermediate Bus Voltage for
DPA application
• Regulation to zero load
• Output Enable Pin
• Meets Basic Insulation
• Input UVLO and Overvoltage Protection
• Over Temperature Protection
Input
Input Range1 42 to 53 VDC
Efficiency 96%@12V (Typ)
Over Voltage Protection 60V
Input UVLO1 39V to 42V
Output
Output Current 0A to 25A max (300W output power)
Line Regulation 10.25V to 13.60V
8.50V to 13.60V (for “-AL” option)
Load Regulation ±3% Vo (Typical)
Noise/Ripple2 100mV (Typical)
Transient Response 200mV typical deviation
50% to 75% Load Change
100µs max recovery time
Over Current Limit1 115% IO,MAX typical (latching)
Switching Frequency 800kHz
Control
Enable TTL compatible
(Positive or Negative Enable Logic)
Isolation Voltage
Input to Output 2000Vdc max
* Specifications are subject to change without notice.
Ambient air operating temperature range:
-40°C to +100°C
Storage temperature: -55°C to +125°C
Overtemperature protection: 115°C typical
MTBF: > 1 million hours
UL, cUL 60950
TUV EN60950
Environmental
Total Power: 300W (12V @ 25A)
Input Voltages: 48V
No. of Outputs: Single
Safety
Astec Industry Standard
ALQ25B50
DC Transfromer