Data Sheet
Austin LynxTM 24V: Non-isolated Power Modules:
June 16, 2009
18/20– 30Vdc input; 3.0 – 6.0Vdc & 5.0 – 15.0Vdc Output; 30& 50W
Vo
Feature Descriptions (continued)
Rmargin-down
Output Voltage Programming (continued)
For the AX050A0X modules,
Austin Lynx or
Lynx II Series
10500
⎡
⎤
Rtrim =
−1000 Ω
Q2
⎢
⎣
⎥
⎦
Vo − 5.021
Trim
where, Rtrim is the external resistor in Ω and
Vo is the desired output voltage
Rmargin-up
Rtrim
VIN(+)
VO(+)
TRIM
Q1
GND
LOAD
ON/OFF
Figure 31. Circuit Configuration for margining the
output voltage.
Rtrim
GND
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, Rmargin-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 Rmargin-up and Rmargin-down for a specific output
voltage and % margin. Please consult your local
Lineage Power technical representative for additional
details.
LINEAGE POWER
12
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