108989050 Lineage Power, 108989050 Datasheet - Page 13

• Manufacturer Part Number: 108989050
• Description: Module DC-DC 1-OUT 0.75V to 5.5V 10A 11-Pin SIP
• Manufacturer: Lineage Power
• Type: Step Downr

Specifications of 108989050

• Package: 11SIP
• Output Current: 10 A
• Output Voltage: 0.75 to 5.5 V
• Input Voltage: 12 V
• Number Of Outputs: 1
• Switching Regulator: Yes

Data Sheet
October 1, 2009
Feature Descriptions
Output Voltage Programming
The output voltage of the Austin Lynx
programmed to any voltage from 0.75 Vdc to 5.5 Vdc by
connecting a single resistor (shown as Rtrim in Figure
29) between the TRIM and GND pins of the module.
Without an external resistor between the TRIM pin and
the ground, the output voltage of the module is 0.7525
Vdc. To calculate the value of the resistor Rtrim for a
particular output voltage Vo, use the following equation:
For example, to program the output voltage of the
Austin Lynx
follows:
Figure 29. Circuit configuration to program output
voltage using an external resistor.
Table 1 provides Rtrim values required for some
common output voltages.
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
LINEAGE
V
ON/OFF
Table 1
IN
(+)
POWER
TM
www.lineagepower.com
Rtrim
GND
II module to 1.8 Vdc, Rtrim is calculated is
V
0.7525
Rtrim
O,
1.2
1.5
1.8
2.5
3.3
5.0
=
(V)
Rtrim
TRIM
V
O
⎡
⎢
⎣
=
(+)
Vo
⎡
⎢
⎣
1
10500
−
8 .
10500
=
. 0
−
. 9
7525
. 0
024
(continued)
75
8.3 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 10A output current
−
Rtrim (KΩ)
k
−
1000
Ω
1000
under the Design
Open
22.46
13.05
9.024
5.009
3.122
1.472
TM
R
trim
⎤
⎥
⎦
II SMT can be
⎤
⎥
⎦
Ω
Austin Lynx
LOAD
Tools section, helps determine the required external trim
resistor needed for a specific output voltage.
The amount of power delivered by the module is defined
as the voltage at the output terminals multiplied by the
output current. When using the trim feature, the output
voltage of the module can be increased, which at the
same output current would increase the power output of
the module. Care should be taken to ensure that the
maximum output power of the module remains at or
below the maximum rated power (P
Voltage Margining
Output voltage margining can be implemented in the
Austin Lynx
R
margining-up the output voltage and by connecting a
resistor, R
for margining-down. Figure 30 shows the circuit
configuration for output voltage margining. The POL
Programming Tool, available at
under the Design Tools section, also calculates the
values of R
voltage and % margin. Please consult your local
Lineage Power technical representative for additional
details.
Figure 30. Circuit Configuration for margining
Output voltage.
margin-up
TM
II 12V SIP Non-isolated Power Modules:
, from the Trim pin to the ground pin for
Austin Lynx or
Lynx II Series
margin-down
margin-up
TM
II modules by connecting a resistor,
and R
, from the Trim pin to the Output pin
Trim
Vo
GND
margin-down
Rtrim
www.lineagepower.com
Q2
Q1
for a specific output
max
Rmargin-down
Rmargin-up
= V
o,set
x I
o,max
).
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