Technical Reference Notes
AEO_ALO04/12/20/25x48 Series
(Single Output 8th Brick)
AEO/ALO Single Output 8th Brick: Baseplate or Open-Frame Module
The AEO_ALO04/12/20/25x48 series is Astec’s Low Current 8th 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
Up to 25A max (VO ≤ 1.8V)
Line/Load Regulation < 1% VO
Ripple and Noise
Output Voltage
Adjust Range
20mVP-P typical at 1.8V
Special Features
±10% VO
Transient Response 2% Typical deviation
50% to 75% step load
•
•
•
•
•
•
•
Industry Standard 8th Brick Footprint
Baseplate or Open frame construction
Low Ripple and Noise
250µs settling time (Typ)
Remote Sense
Over Current
Protection
+10%VO
Regulation to zero load
120% (Typ)
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
Over Voltage
Protection
130% (Typ)
Over Temperature
Protection
110 °C
•
Safety
Environmental Specifications
UL + cUL 60950, Recognized
EN60950 through TUV-PS
•
•
•
-40ºC to 85ºC Operating Temperature
-55ºC to 125ºC Storage Temperature
MTBF > 1 million hours
MODEL: AEO_ALO04/12/20/25x48 SERIES
SHEET 1 OF 26
AUGUST 25, 2005 - REVISION G
ASTEC [ Astec America, Inc ]
