Data Sheet
Austin SuperLynxTM SIP Non-isolated Power Modules:
September 9, 2008
3.0 – 5.5Vdc Input; 0.75Vdc to 3.63Vdc Output; 16A output current
for margining-down. Figure 31 shows the circuit
Feature Descriptions (continued)
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.
VIN(+)
VO(+)
ON/OFF
LOAD
TRIM
+
-
trim
V
Vo
GND
Rmargin-down
Figure 30. Circuit Configuration for programming
Output voltage using external voltage source.
Austin Lynx or
Lynx II Series
Q2
Table 1 provides Rtrim values required for some
common output voltages, while Table 2 provides values
of external voltage source, Vtrim for the same common
output voltages.
Trim
Rmargin-up
Table 1
Rtrim
VO, (V)
0.7525
1.2
Rtrim (KΩ)
Open
Q1
41.973
23.077
15.004
6.947
GND
1.5
1.8
Figure 31. Circuit Configuration for margining
Output voltage.
2.5
3.3
3.160
Remote Sense
The Austin SuperLynxTM SIP power modules have a
Remote Sense feature to minimize the effects of
distribution losses by regulating the voltage at the
Remote Sense pin (See Figure 32). The voltage
between the Sense pin and Vo pin must not exceed
0.5V.
Table 2
VO, set (V)
0.7525
1.2
Vtrim (V)
Open
0.6240
0.5731
0.5221
0.4033
0.2670
1.5
The amount of power delivered by the module is defined
as the output voltage multiplied by the output current
(Vo x Io). When using Remote Sense the output
voltage of the module can increase, which if the same
output is maintained, increases the power output by the
module. Make sure that the maximum output power of
the module remains at or below the maximum rated
power. When the Remote Sense feature is not being
used, connect the Remote Sense pin to the output pin
of the module.
1.8
2.5
3.3
By a using 1% tolerance trim resistor, set point
tolerance of ±2% is achieved as specified in the
electrical specification. 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 SuperLynxTM 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 the Output pin
LINEAGE POWER
13
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