Technical Reference Notes AEO ALO04/12/20/25x48 Series th (Single Output 8 Brick) th AEO/ALO Single Output 8 Brick: Baseplate or Open-Frame Module th The AEO ALO04/12/20/25x48 series is Astecs Low Current 8 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 -40C to 85C ambient, the converters are deployable into almost any environment. Electrical Parameters Input Input Range 36-75 VDC Input Surge 100V / 100ms Control Enable TTL compatible (Positive or Negative Logic Enable Options) Output Load Current Up to 25A max (V 1.8V) O Line/Load Regulation < 1% V O Ripple and Noise 20mV typical at 1.8V P-P Output Voltage Special Features Adjust Range 10% V O Transient Response 2% Typical deviation th Industry Standard 8 Brick Footprint 50% to 75% step load Baseplate or Open frame construction 250 s settling time (Typ) Low Ripple and Noise Remote Sense +10%V O Regulation to zero load Over Current 120% (Typ) High Capacitive Load Start-up Protection Fixed Switching Frequency Over Voltage 130% (Typ) Industry standard features: Input UVLO Protection Enable non-latching OVP, OCP and OTP Over Temperature 110 C Output Trim, Differential Remote Sense Protection Meets Basic Insulation Safety Environmental Specifications UL + cUL 60950, Recognized -40C to 85C Operating Temperature EN60950 through TUV-PS -55C to 125C Storage Temperature MTBF > 1 million hours MODEL: AEO ALO04/12/20/25x48 SERIES SHEET 1 OF 26 AUGUST 25, 2005 - REVISION GTechnical Reference Notes AEO ALO04/12/20/25x48 Series th (Single Output 8 Brick) Electrical Specifications ABSOLUTE MAXIMUM RATINGS Stresses in excess of the absolute maximum ratings can cause permanent damage to the converter. Functional operation of the device is converter is not implied at these or any other conditions in excess of those given in the operational section of the specs. Exposure to absolute maximum ratings for extended period can adversely affect device reliability. Parameter Device Symbol Min Typical Max Unit Input Voltage Continuous All Vin -0.3 - 75 Vdc Transient (100ms) Vin - - 100 trans I/O Isolation Input-to-Output All - - 1500 -Vdc 1 Operating Temperature All T -40 - 85 C A Storage Temperature All T -55 - 125 C STG Operating Humidity All - 10 - 85 % Max Voltage at Enable Pin All -0.6 - 25 Vdc Max Output Power B (12V0) P -- 48.0 W O, MAX A (5V0) - - 60.0 F (3V3) - - 66.0 G (2V5) - - 50.0 Y (1V8) - - 45.0 M (1V5) - - 37.5 K (1V2) - - 30.0 INPUT SPECIFICATIONS Parameter Device Symbol Min Typical Max Unit Operating Input Voltage Range All V 36 48 75 Vdc IN Input Under-Voltage Lock-out T ON Threshold All 33 34 36 Vdc T OFF Threshold 31 32 34 2 Max Input Current B (12V0) Iin - - 1.7 A max A (5V0) - - 2.3 F (3V3) - - 2.4 G (2V5) - - 1.9 Y (1V8) - - 1.8 M (1V5) - - 1.6 K (1V2) 1.4 Standing Loss B (12V0) - - 5.75 W Vin = Vin A (5V0) - - 4.00 nom F (3V3) - - 4.00 G (2V5) - - 4.00 Y (1V8) - - 3.00 M (1V5) - - 2.50 K (1V2) - - 2.00 MODEL: AEO ALO04/12/20/25x48 SERIES SHEET 2 OF 26 AUGUST 25, 2005 - REVISION G