LXM1643-12-63
更新时间：2024-09-18 05:33:59
品牌：MICROSEMI
描述：12V Quad 6W CCFL Programmable Inverter Module
概述
数据手册LXM1643-12-63 概述
12V Quad 6W CCFL Programmable Inverter Module 四路12V 6W CCFL可编程的逆变器模块
LXM1643-12-63 数据手册
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PDF下载PanelMatch™
LXM1643-12-63
®
12V Quad 6W CCFL Programmable Inverter Module
TM
P
RODUCTION DATASHEET
KEY FEATURES
DESCRIPTION
The LXM1643-12-63 is a Quad 6W
The resultant “burst drive” that
Externally Programmable
Maximum Output Current
Easy to Use Brightness
Control
RangeMAX Wide Range
Dimming
Output Short-Circuit Protection
and Automatic Strike-Voltage
Regulation and Timeout
Fixed Frequency Operation
Output Direct Drive™ CCFL (Cold energizes the lamp was designed
Cathode Fluorescent Lamp) Inverter specifically to ensure that no premature
Module specifically designed for driving lamp degradation occurs, while allowing
LCD backlight lamps. It is ideal for significant power savings at lower dim
driving the 15” Optrex T-51511D150-FW- levels.
A-AC/AD, T51863D150J-FW-A-AB/AD,
or similar TFT LCD panels.
LXM1643 modules provide the directly to high frequency, high-voltage
designer with a vastly superior display waves required to ignite and operate
brightness range than typical with analog CCFL lamps.
The modules convert the DC voltage
from the system battery or AC adapter
Rated From -20 to 70°C
(current amplitude control) dimming.
The LXM1643-12-63 inverter is
APPLICATIONS
The inverter includes a dimming input intended for panel assemblies with two
that permits brightness control from either high and two low lamp connections, each
a DC voltage source or a PWM signal or sharing the same connector. Two other
external potentiometer. The maximum versions, the LXM1643-12-61 and the
output current is externally programmable LXM1643-12-62, are available to match
over a range of 5 to 8mA in 1mA steps to other quad lamp panels with alternative
allow the inverter to match properly to a output connector configurations.
High Brightness Displays
Desktop Displays
Industrial Display Controls
BENEFITS
Smooth, Flicker Free 2%-
100% Full-Range Brightness
Control
Programmable Output
Current Allows Inverter to
Mate With a Wide Variety of
wide array of LCD panel lamp current
specifications.
Other benefits of this new topology
are stable fixed-frequency operation,
The RangeMAX™ Digital Dimming secondary-side strike-voltage regulation,
Technique provides flicker-free brightness and both open/shorted lamp protection
control in any wide range (typically 50:1+) with fault timeout.
dimming application.
LCD Panel Specifications
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
Protected By U.S. Patents: 5,923,129; 5,930,121; 6,298,234; Patents Pending
PRODUCT HIGHLIGHT
Universal Dimming Input
PWM, VDC, or
Potentiometer
DC Voltage
Source
PWM
Signal
Potentiometer
Microsemi
PACKAGE ORDER INFO
I
NVERTER
M
ATES
DIRECTLY TO
P
ART
N
UMBER
OUTPUT CONNECTORS
P
ANEL
CONNECTORS
Two JST SM02B-BHSS-1-TB or Yeon Ho 35001WR-02A00
and Two JST SM02(4.0)B-BHS-1-TB or equivalent connectors
JST BHSR-02VS-1 and
JST BHR-02VS-1
LXM1643-12-63
Copyright © 2004
Rev. 1.0, 2005-03-15
Microsemi
Page 1
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
PanelMatch™
LXM1643-12-63
®
12V Quad 6W CCFL Programmable Inverter Module
TM
P
RODUCTION DATASHEET
ABSOLUTE MAXIMUM RATINGS (NOTE 1)
Input Signal Voltage (VIN1).....................................................................................................................................-0.3V to 15V
Input Power....................................................................................................................................................................... 30W
Output Voltage, no load ............................................................................................................ Internally Limited to 2000VRMS
Output Current (each output) ......................................................................................................9.5mARMS (Internally Limited)
Output Power (each output) ............................................................................................................................................. 6.0W
Input Signal Voltage (
Input)..................................................................................................................... -0.3V to VIN1
SLEEP
Input Signal Voltage (BRITE) ...............................................................................................................................-0.3V to 5.5V
Ambient Operating Temperature, zero airflow.....................................................................................................-20°C to 70°C
Storage Temperature Range...............................................................................................................................-40°C to 85°C
Note 1: Exceeding these ratings could cause damage to the device. All voltages are with respect to Ground. Currents are positive into, negative out of specified
terminal.
RECOMMENDED OPERATING CONDITIONS (R.C.)
This module has been designed to operate over a wide range of input and output conditions. However, best efficiency and performance
will be obtained if the module is operated under the condition listed in the ‘R.C.’ column. Min. and Max. columns indicate values beyond
which the inverter, although operational, will not function optimally.
Recommended Operating Conditions
Parameter
Symbol
Units
Min
R.C.
Max
Input Supply Voltage Range (Fully Regulated
Lamp Current)
Input Supply Voltage Range (Functional)
Output Power (each output)
Linear BRITE Control Input Voltage Range
Lamp Operating Voltage
Lamp Current (Full Brightness)
Operating Ambient Temperature Range
10.8
10.2
12
13.2
VIN1
V
12
5.0
13.8
6.0*
2.0
730
8
PO
VBRT_ADJ
VLAMP
IOLAMP
TA
W
V
VRMS
mARMS
°C
0.5
530
5
625
-20
70
*Total output power must not exceed 6W . Higher voltage lamps may require maximum output current to be set lower than 8mARMS
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, the following specifications apply over the recommended operating condition and ambient temperature of
25°C except where otherwise noted.
LXM1643-12-63
Parameter
Symbol
Test Conditions
Units
Min
Typ
Max
OUTPUT PIN CHARACTERISTICS
`
VBRT_ADJ > 2.0VDC
,
> 2.0V, VIN1 = 12VDC
SLEEP
ISET1 = Ground, ISET2 = Ground
VBRT_ADJ > 2.0VDC
Full Bright Lamp Current (each output)
IL(MAX)
IL(MAX)
IL(MAX)
IL(MAX)
ILL%DEV
IL(MIN)
4.0
5.0
6.0
7.0
5
6
5.5
6.6
7.7
8.8
10
mARMS
mARMS
mARMS
mARMS
%
,
> 2.0V, VIN1 = 12VDC
> 2.0V, VIN1 = 12VDC
> 2.0V, VIN1 = 12VDC
> 2.0V, VIN1 = 12VDC
> 2.0V, VIN1 = 12VDC
SLEEP
ISET1 = Ground, ISET2 = Open
VBRT_ADJ > 2.0VDC
Full Bright Lamp Current (each output)
Full Bright Lamp Current (each output)
Full Bright Lamp Current (each output)
,
SLEEP
ISET1 = Open, ISET2 = Ground
VBRT_ADJ > 2.0VDC
7
,
SLEEP
ISET1 = Open, ISET2 = Open
VBRT_ADJ > 2.0VDC
8
Output Current Lamp to Lamp
Deviation
,
SLEEP
ISET1 = Open, ISET2 = Open
VBRT_ADJ ≤0.5VDC
3
Min. Average Lamp Current
(each output)
,
SLEEP
ISET1 = ISET2 = Ground
-20°C < TA < 70°C, VIN1 > 10.8VDC
.30
mARMS
Lamp Start Voltage
Operating Frequency
Burst Frequency
VLS
fO
1500
69
1650
72
VRMS
kHz
Hz
V
BRT_ADJ = 2.5VDC > 2.0V, VIN1 = 12V
,
75
SLEEP
fBURST
Output Burst Frequency
269
281
293
Copyright © 2004
Rev. 1.0, 2005-03-15
Microsemi
Page 2
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
PanelMatch™
LXM1643-12-63
®
12V Quad 6W CCFL Programmable Inverter Module
TM
P
RODUCTION DATASHEET
ELECTRICAL CHARACTERISTICS (CONTINUED)
Unless otherwise specified, the following specifications apply over the recommended operating condition and ambient temperature of
25°C except where otherwise noted.
LXM1643-12-63
Parameter
Symbol
Test Conditions
Units
Min
Typ
Max
BRITE INPUT
`
VBRT_ADJ = 0VDC
VBRT_ADJ = 3VDC
-300
50
µADC
µADC
Input Current
IBRT
Minimum Input for Max. Lamp Current VBRT_ADJ IO(LAMP) = Maximum Lamp Current
Maximum Input for Min. Lamp Current VBRT_ADJ IO(LAMP) = Minimum Lamp Current
SLEEP INPUT
2.0
0.5
2.05
VDC
VDC
0.4
`
`
`
VSLEEP
VSLEEP
RUN Mode
2.0
VIN1
0.8
VDC
VDC
SLEEP Mode
-0.3
SET1,2 INPUT
SET1,2 Low Threshold
Input Current
VL
0.4
30
V
ISET
VSET ≤ 0.4V
-300
µA
POWER CHARACTERISTICS
Sleep Current
IIN(MIN)
IRUN
V
IN1 = 12VDC
,
,
< 0.8V
0.0
10
µADC
SLEEP
SLEEP
VIN1 = 12VDC
≥ 2.0V, ISET1 = Open
Run Current
Efficiency
1450
mADC
ISET2 = Ground, VLAMP = 550VRMS
IN1 = 12VDC ≥ 2.0V, ISET1 = Open
V
,
SLEEP
ISET2 = Ground, VLAMP = 550VRMS
88
%
η
FUNCTIONAL PIN DESCRIPTION
C
ONN
PIN
DESCRIPTION
CN1 (Molex 53261-1290) Mates with 51021-1200 housing, 50079-8100 pins. Mates with LX9508 input cable assembly
CN1-1,2,3
CN1-4,5,6
VIN1
Main Input Power Supply (10.8V < VIN1 < 13.2V)
Power Supply Return
GND
CN1-7
CN1-8
AGND
NC
Analog Signal Ground
No Connect
CN1-9
ON/OFF Control. (0V <
< 0.8 = OFF,
>= 2.0V = ON
SLEEP
SLEEP
BRITE
SET1
SLEEP
CN1-10
CN1-11
CN1-12
Brightness Control (0.5V to 2.0VDC). 2.0VDC gives maximum lamp current.
SET1 MSB Connecting this pin to ground decreases the output current (see Table 1)
SET2 LSB Connecting this pin to ground decreases the output current (see Table 1)
SET2
CN2, CN5 (JST SM02B-BHSS-1-TB or Yeon Ho 35001WR-02A00)
CN2, CN5-
1,2
High voltage connection to high side of lamp. Connect to lamp terminal with shortest lead length.
DO NOT connect to Ground.
VHI
CN3, CN4 (SM02(4.0)B-BHS-1-TB or equivalent connectors)
CN3, CN4-
1,2
Connection to low side of lamp. Connect to lamp terminal with longer lead length.
DO NOT connect to Ground
VLO
Copyright © 2004
Rev. 1.0, 2005-03-15
Microsemi
Page 3
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
PanelMatch™
LXM1643-12-63
®
12V Quad 6W CCFL Programmable Inverter Module
TM
P
RODUCTION DATASHEET
TABLE 1
OUTPUT CURRENT SETTINGS
SET1
(Pin 11)
Open*
Open*
Ground
Ground
SET2
(Pin 12)
Open*
Ground
Open*
Nominal Output Current
8.0mA
7.0mA
6.0mA
5.0mA
Ground
* If driven by a logic signal it should be open collector or open drain only, not a voltage source.
PHYSICAL DIMENSIONS
L X M1643- 1 2-63
188mm
7.40in.
182mm
7.165in.
6mm
0.24in
4mm
0.16in
4mm
0.16in
W
CN2
CN1
CN4
28mm ± 0.2mm
1.10in.
W
36mm
1.42in.
W
CN5
W
CN3
94mm
3.70in.
4mm
0.16in.
G
ROUNDED
MOUNTING HOLES
.
3.18MM ±.08 DIA
Warning
88mm ± 0.2mm
3.465in.
88mm ± 0.2mm
3.465in.
High Voltage Present at
high side of Transformer
and Output Connector
4.7mm
0.18in.
8mm Max
0.315in.
PCB tolerances ± 0.5mm
Weight: (45g) typ
.
1.7mm
0.67in.
All dimensions are in millimeters, inches are for reference only.
SIMPLIFIED BLOCK DIAGRAM
High Voltage Transformers
Controller
VHI
+3V
10K
Comparator
VIN1
VBRITE
VHI
+
-
Output
Driver
0.5 -
2VDC
Ramp
Z
Z
Ramp
Gen
+3V
OCSENSE
OVSENSE
10K
SET1
SET2
+3V
10K
VLO
ISENSE
Z
VLO
One of two
Copyright © 2004
Rev. 1.0, 2005-03-15
Microsemi
Page 4
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
PanelMatch™
LXM1643-12-63
®
12V Quad 6W CCFL Programmable Inverter Module
TM
P
RODUCTION DATASHEET
TYPICAL APPLICATION
12V
VIN1
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 1.8K 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.
DAC or
Pot
BRITE
VHx
VHx
0.45V
to 2.0V
20K
LXM1643-12-63
1.8K
VLOx
VLOx
If you need to turn the inverter ON/OFF remotely, connect
SLEEP
SET1
to TTL logic signal to the
input.
SLEEP
SET2
NC
GND
One of
two
NC
Connect VHI to high voltage wire from the lamp. Connect
VLO to the low voltage wire (wire with thinner insulation).
Never connect VLO to circuit ground as this will defeat
lamp current regulation. If both lamp wires have heavy
Figure 1 – Brightness Control
(Output current set to maximum)
high voltage insulation, connect the longest wire to VLO
.
This wire is typically white.
Use the SET1 and SET2 (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 correlates with driving the CCFL at the
manufactures nominal current setting. However the SET1
and SET2 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.
PWM Signal
from System
BRITE
P.W.
LXM1643-12-63
10us to 125uS
0 < P.W. <
100% of period
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 of both the burst duty cycle and the
peak output current, using this technique the effective dim
ratio can be increased greater than the burst duty cycle
alone. 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 since not all lamps are designed to be
overdriven.
Figure 1A – PWM Brightness Control
12V
VIN1
BRITE
LXM1643-12-63
SLEEP
SET1
SET2
GND
One
of two
L
L
H
H
L
H
L
5.0mARMS
6.0mARMS
7.0mARMS
8.0mARMS
The inverter has a built in fault timeout function. If the
output return is open (lamp disconnected or broken) or
shorted the inverter will attempt to strike the lamp for
several seconds. After about a second without success the
inverter will shutdown. In order to restart the inverter it is
necessary to toggle the sleep input or cycle the VIN1 input
supply. In the timeout shutdown mode input drain current
will be about 8mA.
H
L=GND; H=Open
Figure 2 – Max Output Current
(SET1 and SET2 Inputs)
Copyright © 2004
Rev. 1.0, 2005-03-15
Microsemi
Page 5
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
PanelMatch™
LXM1643-12-63
®
12V Quad 6W CCFL Programmable Inverter Module
TM
P
RODUCTION DATASHEET
NOTES
PRODUCTION DATA – Information contained in this document is proprietary to Microsemi and
is current as of publication date. This document may not be modified in any way without the
express written consent of Microsemi. Product processing does not necessarily include testing of
all parameters. Microsemi reserves the right to change the configuration and performance of the
product and to discontinue product at any time.
Copyright © 2004
Rev. 1.0, 2005-03-15
Microsemi
Page 6
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
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