Technical Reference Notes
AEO_ALO04/12/20/25x48 Series
(Single Output 8
th
Brick)
AEO/ALO Single Output 8
th
Brick: Baseplate or Open-Frame Module
The AEO_ALO04/12/20/25x48 series is Astec’s Low Current 8
th
Brick industry standard offering. Operating from an input
voltage range of 36V to 75V, the series provides 7 configured outputs starting from 1.2V all the way up to 12V. It delivers up
to 25A max current for 1.8V and lower voltages at impressive levels of efficiency. It provides tight regulation and exhibits
clean and monotonic output start up characteristics. The AEO_ALO series comes with industry standard features such as Input
UVLO; non-latching OCP, OVP and OTP; Output Trim; Differential Remote Sense pins. Both baseplate (AEO) and open
frame (ALO) construction are available as well as TH and SMT termination. With its wide operating temperature range of
-40°C to 85°C ambient, the converters are deployable into almost any environment.
Electrical Parameters
Input
Input Range
Input Surge
36-75 VDC
100V / 100ms
Control
Enable
TTL compatible
(Positive or Negative Logic Enable Options)
Output
Load Current
Line/Load Regulation
Ripple and Noise
Output Voltage
Adjust Range
Transient Response
Remote Sense
Over Current
Protection
Over Voltage
Protection
Over Temperature
Protection
Up to 25A max (V
O
≤
1.8V)
< 1% V
O
20mV
P-P
typical at 1.8V
±10% V
O
2% Typical deviation
50% to 75% step load
250µs settling time (Typ)
+10%V
O
120% (Typ)
130% (Typ)
110
°C
Special Features
•
•
•
•
•
•
•
•
Industry Standard 8
th
Brick Footprint
Baseplate or Open frame construction
Low Ripple and Noise
Regulation to zero load
High Capacitive Load Start-up
Fixed Switching Frequency
Industry standard features: Input UVLO;
Enable; non-latching OVP, OCP and OTP;
Output Trim, Differential Remote Sense
Meets Basic Insulation
Environmental Specifications
•
•
•
-40ºC to 85ºC Operating Temperature
-55ºC to 125ºC Storage Temperature
MTBF > 1 million hours
Safety
UL + cUL 60950, Recognized
EN60950 through TUV-PS
MODEL: AEO_ALO04/12/20/25x48 SERIES
AUGUST 25, 2005 - REVISION G
SHEET 1 OF 26
ASTEC [ Astec America, Inc ]
