GE Industrial Solutions Austin Lynx 24V - Manual (Page 12)

Data Sheet
September 10, 2013 Austin Lynx TM 24V: Non-isolated Power Modules:
18/20– 30/32Vdc input; 3 – 6Vdc & 5 – 15Vdc Output; 30/50W
LINEAGE POWER 12
Feature Descriptions (continued)
Output Voltage Programming
(continued)
For the AX050A0X modules,
Ω




−
−
= 1000
021 . 5
10500
Vo
Rtrim
where, Rtrim is the external resistor in Ω and
Vo is the desired output voltage
V
O
(+)
TRIM
GND
LOAD
V
IN
(+)
ON/OFF
Rtrim
Figure 30. Circuit configuration to program output
voltage using an external resistor.
By using a ±0.5% tolerance trim resistor with a TC of
±100ppm, a set point tolerance of ±2% can be achieved
as specified in the electrical specifications. The POL
Programming Tool, available at
www.lineagepower.com
under the Design Tools section, helps determine the
required external trim resistor needed for a specific
output voltage.
Voltage Margining
Output voltage margining can be implemented in the
Austin Lynx 24V modules by connecting a resistor,
R
margin-up
, from the Trim pin to the ground pin for
margining-up the output voltage and by connecting a
resistor, R
margin-down
, from the Trim pin to output pin for
margining-down. Figure 31 shows the circuit
configuration for output voltage margining. The POL
Programming Tool, available at
www.lineagepower.com
under the Design Tools section, also calculates the
values of R
margin-up
and R
margin-down
for a specific output
voltage and % margin. Please consult your local
Lineage Power technical representative for additional
details.
Vo
Austin Lynx or
Lynx II Series
GND
Trim
Q1
Rtrim
Rmargin-up
Q2
Rmargin-down
Figure 31. Circuit Configuration for margining the
output voltage.