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參數(shù)資料
| 型號： | LXM1617-12-63 |
| 英文描述： | CCFL Inverter Module - Single Lamp |
| 中文描述： | CCFL逆變器模塊-單燈 |
| 文件頁數(shù)： | 5/6頁 |
| 文件大?。?/td> | 178K |
| 代理商： | LXM1617-12-63 |
P
RELIMINARY
D
ATASHEET
Microsemi
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 5
Copyright
2002
Rev. 0.3b, 2003-01-16
W
M
.
C
PanelMatch
LXM1618-05-6x
5V 6W CCFL Programmable Inverter Module
I N T E G R A T E D P R O D U C T S
T Y P I C A L A P P L I C A T I O N
5V
SET
2
GND
V
HI
V
LO
BRITE
V
IN1
SLEEP
SET
1
0.65V
to 2.0V
2.7K
20K
DAC or
Pot
CCFL
TUBE
NC
NC
LXM1618-05-6x
Figure 1
– Brightness Control
(output current set to maximum)
P.W.
10μs to 125μS
~26% < P.W. < 100% of
period
BRITE
LXM1618-05-6x
PWM Signal
from System
Figure 1A
– PWM Brightness Control
LXM1618-05-6x
SET
2
GND
V
HI
V
LO
SLEEP
SET
1
CCFL
TUBE
BRITE
5V
V
IN1
L
L
H
H
L
H
L
H
5.0mA
RMS
6.0mA
RMS
7.0mA
RMS
8.0mA
RMS
L=GND; H=Open
Figure 2
– Max Output Current
(SET
1
and SET
2
Inputs)
The brightness control may be a voltage output DAC or
other voltage source, a digital pot or 20K manual pot. The
inverter contains an internal 10K pull-up to 3V to bias the
pot add a 2.7K resistor to set the lower threshold voltage.
A 3.3V Logic Level PWM signal from a micro-controller
may also be used as shown in Figure 1A.
If you need to turn the inverter ON/OFF remotely, connect
to TTL logic signal to the
SLEEP
input.
Connect V
HI
to high voltage wire from the lamp. Connect
V
LO
to the low voltage wire (wire with thinner insulation).
Never connect V
LO
to circuit ground as this will defeat
lamp current regulation. If both lamp wires have heavy
high voltage insulation, connect the longest wire to V
LO
.
This wire is typically white.
Use the SET
1
and SET
2
(see Figure 2) inputs to select the
desired maximum output current. Using these two pins in
combination allows the inverter to match a wide variety of
panels from different manufactures. Generally the best
lamp lifetime and efficiency correlates with driving the
CCFL at the manufactures nominal current setting.
However the SET
1
and SET
2
inputs allow the user the
flexibility to adjust the current to the maximum allowable
output current to increase panel brightness at the expense
of some reduced lamp life.
Although the SET pins are designed such that just leaving
them open or grounding them is all that is needed to set the
output current, they can also be actively set. Using a open
collector or open drain logic signal will allow you to
reduce the lamp current for situations where greater dim
range is required, as an example in nighttime situations. In
conjunction with a light sensor or other timer the panel
could be set to higher brightness (maximum output
current) for daytime illumination and lower brightness
(minimum or typical output current) at nighttime. Since
the dim ratio is a factor the peak output current, using this
technique the effective dim ratio can be increased.
Conversely the SET inputs could be used to overdrive the
lamp temporarily to facilitate faster lamp warm up at
initial lamp turn on. Of course any possible degradation
on lamp life from such practices is the users responsibility
as not all lamps are designed to be overdriven.
The inverter has a built in fault timeout function. If the
output is open (lamp disconnected or broken) or shorted
the inverter will attempt to strike the lamp for several
seconds. After about 2 to 4 seconds without success the
inverter will shutdown. In order to restart the inverter it is
necessary to toggle the sleep input or cycle the V
IN1
input
supply.
A
P
P
L
I
C
A
T
I
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N
相關PDF資料 |
PDF描述 |
|---|---|
| LXM1618-03-21 | CCFL Inverter Module - Single Lamp |
| LXM1618-03-22 | CCFL Inverter Module - Single Lamp |
| LXM1618-03-23 | CCFL Inverter Module - Single Lamp |
| LXM1618-05-21 | CCFL Inverter Module - Single Lamp |
| LXM1618-05-22 | CCFL Inverter Module - Single Lamp |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LXM1617-12-6X | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:12V 6W CCFL Programmable Inverter Module |
| LXM1618-03-21 | 功能描述:MOD INVERTER CCFL 2.2W 3.3V PROG RoHS:否 類別:光電元件 >> 反相器 系列:LXM1618-03-2x 標準包裝:100 系列:- 輸入電壓:6.0V 輸出:900V 類型:用于 CCFL 和 UV 燈的逆變器 尺寸/尺寸:2.34" L x 0.35" W x 0.35" H（59.5mm x 9mm x 8.9mm） 安裝類型:底座安裝 |
| LXM1618-03-22 | 功能描述:MOD INVERTER CCFL 2.2W 3.3V PROG RoHS:否 類別:光電元件 >> 反相器 系列:LXM1618-03-2x 標準包裝:100 系列:- 輸入電壓:6.0V 輸出:900V 類型:用于 CCFL 和 UV 燈的逆變器 尺寸/尺寸:2.34" L x 0.35" W x 0.35" H（59.5mm x 9mm x 8.9mm） 安裝類型:底座安裝 |
| LXM1618-03-23 | 功能描述:MOD INVERTER CCFL 2.2W 3.3V PROG RoHS:否 類別:光電元件 >> 反相器 系列:LXM1618-03-2x 標準包裝:100 系列:- 輸入電壓:6.0V 輸出:900V 類型:用于 CCFL 和 UV 燈的逆變器 尺寸/尺寸:2.34" L x 0.35" W x 0.35" H（59.5mm x 9mm x 8.9mm） 安裝類型:底座安裝 |
| LXM1618-03-2X | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:3.3V 2.2W CCFL Programmable Inverter Module |
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