AM80A-300L-120F18 Astec Power, AM80A-300L-120F18 Datasheet - Page 19

• Manufacturer Part Number: AM80A-300L-120F18
• Manufacturer: Astec Power

Output Voltage Adjustment (V ADJ)
The output voltage of the module may be accurately
adjusted by up to ±20% of the nominal factory set output.
Adjustment is carried out using either an external voltage
source (0 to 2V, capable of sinking 1mA) or a resistor (0 to
2K) connected between V ADJ and -SENSE.
Current Limit Adjustment (C LIM
ADJ)
A constant current limiting circuit protects the module
under overload or short circuit conditions.
With the C LIM ADJ pin left unconnected the current
limit is factory set to 115% of the module's rated output,
but may be adjusted across the range from 20% to 100%
using an external voltage source (0.8 to 4V, capable of
sinking 1mA) or a resistor (800R to 4K) connected
between C LIM ADJ and -SENSE.
Rev. 05 Mar 99
%V
Onom
7
6
120%
100%
80%
0
12
1
+SENSE
-SENSE
+O/P
-O/P
1V
1K
V
R
VADJ
VADJ
2V
2K
D/A
7
6
4.5V
4.5K
Nominal output,
V ADJ open
12
1
+SENSE
-SENSE
open
+O/P
-O/P
(OVP ADJ)
An independent overvoltage circuit monitors the module's
output pins and will shut the module down in the event of
an internal or external fault which causes the output
voltage to rise above the preset limit. The module is reset
by removing and re-applying the input power or toggle the
ENABLE OFF/ON.
Overvoltage Protection Adjustment
%V
7
6
O
%I
7
150%
130%
110%
100%
6
Onom
115%
100%
50%
0%
0
12
AMPSS
12
1
0
1
+SENSE
-SENSE
+SENSE
-SENSE
+O/P
-O/P
+O/P
-O/P
2V
2K
0.5V
0.5K
V
R
C LIM ADJ
®
C LIM ADJ
V
R
OVP ADJ
D/A
Reference Manual
OVP ADJ
4V
4K
D/A
7
6
7
6
1V
1K
12
open
1
+SENSE
-SENSE
open
12
+O/P
-O/P
1
+SENSE
-SENSE
+O/P
-O/P
19