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參數(shù)資料
| 型號： | LXM1621-03 |
| 廠商： | MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP |
| 元件分類： | 模擬信號調(diào)理 |
| 英文描述： | DIGITAL DIMMING DUAL LAMP CCFL INVERTER MODULE |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, XMA |
| 文件頁數(shù)： | 6/8頁 |
| 文件大?。?/td> | 219K |
| 代理商： | LXM1621-03 |
D
IGITAL
D
IMMING
D
UAL
L
AMP
CCFL I
NVERTER
M
ODULE
P
R E L I M I N A R Y
D
A T A
S
H E E T
LXM1621-xx
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
Copyright 2000
Rev. 0.6 2/00
6
P
A T E N T
P
E N D I N G
RangeMAX
TM
High Voltage
Transformer
I
SENSE
L
V
SENSE
V
BRITE
Transformer
Driver
Ramp
Gen.
Comparator
V
SYNC
Ramp
V
HI1
V
LO
0-2.5V
DC
H O W R A N G E M A X W O R K S
LAMP VOLTAGE & LAMP CURRENT
— Burst Mode Operation
FIGURE 4
— 50% Burst Duty Cycle
FIGURE 5
— 2% Burst Duty Cycle
FIGURE 6
— 2% Burst Duty Cycle (Expanded Time Base)
FIGURE 7
— RangeMAX Block Diagram
Rather than using the traditional dimming technique of
varying lamp current magnitude to adjust light output,
RangeMAX inverters use a fixed lamp current value with
a duty cycle control method.
The lamp current burst width can be modulated from
100% (continuous lamp current) down to a 2% duty cycle,
allowing the lamp to be dimmed to less than 1% of its
full brightness.
As can be seen in Trace 4 of Figure 6, careful design
consideration was given to controlling lamp start voltage
to softly start current flow. This eliminates current over-
shoot that can result in premature cathode wear and re-
duce lamp life.
(770V
RMS
)
(7.6mA
RMS
)
(760V
RMS
)
(6.7mA
RMS
)
(760V
RMS
)
(6.7mA
RMS
)
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| LXM1622-05-XX | DUAL 5W, DIGITAL DIMMING CCFL INVERTER MODULE |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LXM1621-04 | 功能描述:MOD INVERTER CCFL DIM DUAL 5MA RoHS:否 類別:光電元件 >> 反相器 系列:LXM1621 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 |
| LXM1621-XX | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:DIGITAL DIMMING DUAL LAMP CCFL INVERTER MODULE |
| LXM1622-05-01 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:CCFL Inverter Module - Dual Lamp |
| LXM1622-05-02 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:CCFL Inverter Module - Dual Lamp |
| LXM1622-05-03 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:CCFL Inverter Module - Dual Lamp |
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