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参数资料
| 型号： | LXM1641-01 |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, XMA26 |
| 文件页数： | 4/5页 |
| 文件大小： | 168K |
| 代理商： | LXM1641-01 |
D IGITA L D IMMING CCFL I NVER TER M ODULE
LXM1611-01
PRODUCT DA T ABOOK 1996/1997
Copyright 1999
Rev. 0.4
8/99
4
P RELIMINAR Y D ATA S HEET
P A TENT P ENDING
RangeMAX
TM
High Voltage
Transformer
I
SENSE
LAMP
V
SENSE
V
BRITE
Transformer
Driver
Ramp
Gen.
Comparator
V
SYNC(-)
V
SYNC(+)
Ramp
V
HI
V
LO
0-2.5V
DC
HOW RANGEMAX WORKS
LAMP VOLTAGE & LAMP CURRENT — Burst Mode Operation
FIGURE 1 — 50% Burst Duty Cycle
FIGURE 2 — 2% Burst Duty Cycle
FIGURE 3 — 2% Burst Duty Cycle (Expanded Time Base)
FIGURE 4 — 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 3 photo at right,
careful design consideration was given to controlling lamp
start voltage to softly start current flow. This eliminates
current overshoot that can result in premature cathode
wear and reduce lamp life.
(770V
RMS)
(7.6mA
RMS)
(760V
RMS)
(6.7mA
RMS)
(760V
RMS)
(6.7mA
RMS)
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相关代理商/技术参数 |
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|---|---|
| LXM1641-02 | 制造商:MICROSEMI 制造商全称:Microsemi Corporation 功能描述:DIGITAL DIMMING DUAL LAMP CCFL INVERTER MODULE |
| LXM1641-03 | 制造商:MICROSEMI 制造商全称:Microsemi Corporation 功能描述:DIGITAL DIMMING DUAL LAMP CCFL INVERTER MODULE |
| LXM1643-12-61 | 功能描述:MOD INVERTER CCFL QUAD 6W 12V RoHS:否 类别:光电元件 >> 反相器 系列:LXM1643-12-6x 标准包装:100 系列:- 输入电压:6.0V 输出:900V 类型:用于 CCFL 和 UV 灯的逆变器 尺寸/尺寸:2.34" L x 0.35" W x 0.35" H（59.5mm x 9mm x 8.9mm） 安装类型:底座安装 |
| LXM1643-12-62 | 功能描述:MODULE CCFL PROG INVERTER 12V RoHS:否 类别:光电元件 >> 反相器 系列:LXM1643-12-6x 标准包装:100 系列:- 输入电压:6.0V 输出:900V 类型:用于 CCFL 和 UV 灯的逆变器 尺寸/尺寸:2.34" L x 0.35" W x 0.35" H（59.5mm x 9mm x 8.9mm） 安装类型:底座安装 |
| LXM1643-12-63 | 制造商:MICROSEMI 制造商全称:Microsemi Corporation 功能描述:12V Quad 6W CCFL Programmable Inverter Module |
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