AEO04B48-L Emerson Network Power, AEO04B48-L Datasheet - Page 7

• Manufacturer Part Number: AEO04B48-L
• Description: 48W, 36V-75Vin, Single, 12.0V@4A, 1/8 Brick B/plate, 93% Eff, Pos, 5mm TH, RoHS 6
• Manufacturer: Emerson Network Power

Specifications of AEO04B48-L

• Product: Isolated
• Output Power: 48 W
• Input Voltage Range: 36 V to 75 V
• Input Voltage (nominal): 48 V
• Number Of Outputs: 1
• Output Voltage (channel 1): 12 V
• Output Current (channel 1): 4 A
• Isolation Voltage: 1.5 KV
• Package / Case Size: Eighth Brick
• Output Voltage: 12 V
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Basic Operation and Features
INPUT UNDER VOLTAGE LOCKOUT
To prevent any instability to the converter, which may affect the end system, the converter have been designed to turn-on once
V
34VDC
OUTPUT VOLTAGE ADJUST/TRIM
The converter comes with a TRIM pin (PIN 6), which is used to adjust the output by as much as 90% to 110% of its set point.
This is achieved by connecting an external resistor as described below.
To INCREASE the output, external R
should be connected between TRIM PIN (Pin6) and
+SENSE PIN (Pin 7). Please refer to Equation (1) for the
required external resistance and output adjust
relationship.
Equation (1a): 1.5V to 12V
Equation (1b): 1.2V
To DECREASE the output, external R
should be connected between TRIM pin (Pin 6) and
-SENSE PIN (Pin 5). Please refer to Equation (2) for the
required external resistance and output adjust
relationship.
Equation (2):
Where: ∆% = percent change in output voltage
MODEL: AEO_ALO04/12/20/25x48 SERIES
AUGUST 25, 2005 - REVISION G
R adj_up
R adj_up
IN
is in the voltage range of 33 to 36VDC. Likewise, it has also been programmed to turn-off when V
Radj_down
=
=






5.1
5.1
×
×
Vo set
Vo set



1.225 ∆%
510
∆%
0.6
×
×
×
−
×
(
∆%
(
10.2
100
100
+


+
⋅
∆%
kΩ
∆%
)
)
AEO_ALO04/12/20/25x48 Series
adj_up
−
−
adj_down
510
∆%
510
∆%
Technical Reference Notes
resistor
−
−
resistor
(Single Output 8
10.2
10.2






ΚΩ
ΚΩ
Figure 3. External resistor configuration to increase the outputs
Figure 4. External resistor configuration to increase the outputs
-Vin
Enable
+Vin
-Vin
Enable
+Vin
th
Brick)
+Sense
+Sense
-Sense
-Sense
+Vout
+Vout
-Vout
-Vout
Vadj
Vadj
IN
drops down to 31 to
Radj_down
Radj_up
SHEET 7 OF 26
Rload
Rload