参数资料
型号: AXA005A0X-SRZ
厂商: LINEAGE POWER LLC
元件分类: 电源模块
英文描述: 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
封装: ROHS COMPLIANT, SMT-5
文件页数: 5/21页
文件大小: 578K
代理商: AXA005A0X-SRZ
Data Sheet
October 1, 2009
Austin MicroLynxTM 12V SMT Non-isolated Power Modules:
10 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 5A output current
LINEAGE POWER
13
Feature Descriptions (continued)
Output Voltage Programming
The output voltage of the Austin MicroLynx
TM 12V can be
programmed to any voltage from 0.75Vdc to 5.5Vdc by
connecting a resistor (shown as Rtrim in Figure 28)
between Trim and GND pins of the module. Without an
external resistor between Trim and GND pins, the output
of the module will be 0.7525Vdc. To calculate the value
of the trim resistor, Rtrim for a desired output voltage, use
the following equation:
Ω
=
1000
7525
.
0
10500
Vo
Rtrim
is the external resistor in
Vo is the desired output voltage
For example, to program the output voltage of the Austin
MicroLynx
TM 12V module to 1.8V, Rtrim is calculated as
follows:
=
1000
7525
.
0
8
.
1
10500
Rtrim
Ω
=
k
Rtrim
024
.
9
VO(+)
TRIM
GND
Rtrim
LOAD
VIN(+)
ON/OFF
Figure 28. Circuit configuration to program output
voltage using an external resistor
Austin MicroLynx
TM 12Vdc can also be programmed by
applying a voltage between TRIM and GND pins (Figure
29). The following equation can be used to determine the
value of Vtrim needed to obtain a desired output voltage
Vo:
{}
()
7525
.
0
0667
.
0
7
.
0
×
=
Vo
Vtrim
For example, to program the output voltage of a
MicroLynx
TM module to 3.3 Vdc, Vtrim is calculated as
follows:
{})
7525
.
0
3
.
3
0667
.
0
7
.
0
(
×
=
Vtrim
V
Vtrim
530
.
0
=
VO(+)
TRIM
GND
Vtrim
LOAD
VIN(+)
ON/OFF
+
-
Figure 29. Circuit Configuration for programming
Output voltage using external voltage source
Table 1 provides Rtrim values for most common
output voltages. Table 2 provides values of
external voltage source, Vtrim for various output
voltage.
Table 1
VO, set (V)
Rtrim (K)
0.7525
Open
1.2
22.46
1.5
13.05
1.8
9.024
2.5
5.009
3.3
3.122
5.0
1.472
Table 2
VO, set (V)
Vtrim (V)
0.7525
Open
1.2
0.670
1.5
0.650
1.8
0.630
2.5
0.583
3.3
0.530
5.0
0.4166
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.
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