- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄376118 > LXMG1621-03 (Microsemi Corporation) DIGITAL DIMMING DUAL LAMP CCFL INVERTER MODULE PDF資料下載
參數(shù)資料
| 型號(hào)： | LXMG1621-03 |
| 廠商： | Microsemi Corporation |
| 英文描述： | DIGITAL DIMMING DUAL LAMP CCFL INVERTER MODULE |
| 中文描述： | 數(shù)字調(diào)光雙燈CCFL逆變模塊 |
| 文件頁(yè)數(shù)： | 9/10頁(yè) |
| 文件大小： | 317K |
| 代理商： | LXMG1621-03 |
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 9
Copyright
2005
Rev. 1.0a, 2006-11-13
W
M
.
C
RangeMAX
LXMG1621-xx
D
IGITAL
D
IMMING
D
UAL
L
AMP
CCFL
I
NVERTER
M
ODULE
P
RODUCTION
D
ATA
S
HEET
TM
W I D E R D I M M I N G A P P L I C A T I O N
The following application defines techniques capable of
delivering dimming ranges in the 250:1 range. As is widely
understood, these techniques will provide general capabilities
and actual system performance will vary with panel design,
CCFTs, ambient temperature and a number of other variables
outside the control of the inverter. These methods can be used
in conjunction with other techniques such as lamp heating and
matching.
Wide ratio (250:1) dimming can be accomplished using the
Microsemi inverter in two ways:
1.
By varying the input voltage on the brightness pin as
indicated in Figure 9. Caution must be exercised when
applying negative voltage to the brightness control input.
Applying more then –300mV to any inverter input will cause
inverter malfunction (see Absolute Maximum Ratings).
-100mV
0V
2.5V
.070
.14
0.7
7
V
BRT_ADJ
(V)
I
O
(
Figure 9
– Average Lamp Current vs. V
BRITE
Voltage (per Lamp)
C
C
U9
T1
R
C
C
R
C
R
R48
R62
R63
R60
R31
R57
R
R
R54
R53
R
R51
Q11
R
C
R
R89
C37
R61
Q10
Backside of Module
U7
Figure 10
– Locating The Resistor on the LXMG1621-xx
2.
By making a resistor value change on the module.
Remove R61 for maximum dimming range or increase R61
value to desired minimum dim range setting (see figure 10).
Care should be exercised since at a low enough dim setting the
inverter will be unable to detect that the lamp has started and
will initiate lamp strike (kickoff) voltage. This will result in
lamp flicker. For repeatable low light levels the BRITE input
DC supply must be a very clean stable voltage source, at low
dim inputs.
If you plan to completely remove R61 it is recommended that
you ensure that a minimum voltage above zero remain on the
BRITE input to prevent the above flicker problem. This
minimum voltage may need to be adjusted for each individual
inverter module. If you are using a pot to control the BRITE
input then a separate trim pot on the low side would accomplish
the same goal.
Both methods discussed will provide a lower duty cycle
operation than is necessary in a 100:1 dimming application.
Careful consideration should be made with regard to display
quality at these dimming levels. At very low brightness levels,
even very small amounts of noise on the VBRITE line can cause
flicker on the display, so special care must be given to
grounding, filtering, and shielding the inverter from the digital
logic and clock signals.
A
P
P
L
I
C
A
T
I
O
N
S
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LXMG1621-04 | DIGITAL DIMMING DUAL LAMP CCFL INVERTER MODULE |
| LXMG1621-XX | DIGITAL DIMMING DUAL LAMP CCFL INVERTER MODULE |
| LXMG1621-01 | DIGITAL DIMMING DUAL LAMP CCFL INVERTER MODULE |
| LXMG1621-02 | DIGITAL DIMMING DUAL LAMP CCFL INVERTER MODULE |
| LXMG1626-12-45 | 12V Dual 3W CCFL Programmable Inverter Module |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LXMG1621-04 | 功能描述:MOD INVERTER CCFL DIM DUAL 5MA RoHS:是 類別:光電元件 >> 反相器 系列:LXMG1621 標(biāo)準(zhǔn)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 |
| LXMG1621-XX | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:DIGITAL DIMMING DUAL LAMP CCFL INVERTER MODULE |
| LXMG1621-XX_10 | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:DIGITAL DIMMING DUAL LAMP CCFL INVERTER MODULE |
| LXMG1622-12-01 | 功能描述:MOD INVERTER CCFL DIM DUAL 5MA RoHS:是 類別:光電元件 >> 反相器 系列:LXMG1622 標(biāo)準(zhǔn)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 |
| LXMG1623-05-41 | 制造商:Microsemi Corporation 功能描述:CCFL Inverter Dual Lamp 3.5W 80KHz 12-Pin 制造商:Microsemi Corporation 功能描述:CCFL INVERTER MODULE-DUAL LAMP-ROHS - Bulk 制造商:Microsemi 功能描述:CCFL Inverter Dual Lamp 3.5W 80KHz 12-Pin |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。