LXMG1628-12-62 [MICROSEMI]
12V Dual 6W Programmable CCFL Inverter Module; 12V双路6W可编程CCFL逆变器模块![LXMG1628-12-62](http://pdffile.icpdf.com/pdf1/p00158/img/icpdf/LXMG1_877590_icpdf.jpg)
型号: | LXMG1628-12-62 |
厂家: | ![]() |
描述: | 12V Dual 6W Programmable CCFL Inverter Module |
文件: | 总6页 (文件大小:182K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
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PanelMatch™
LXMG1628-12-6x
®
12V Dual 6W Programmable CCFL Inverter Module
PRODUCTION DATASHEET
TM
KEY FEATURES
DESCRIPTION
The LXMG1628-12-6x is a Dual 6W amplitude control results in lower ripple
Output Direct Drive™ CCFL (Cold on the input supply and reduced potential
Cathode Fluorescent Lamp) Inverter transient noise generation. Many STN
Module specifically designed for driving type panels are particularly well suited for
LCD backlight lamps. It is ideal for current amplitude dimming.
Externally Programmable
Maximum Output Current
Easy to Use Brightness Control
Analog Current Amplitude
Dimming Method
Output Open/Short-Circuit
Protection and Automatic Strike-
Voltage Regulation and Timeout
Fixed Frequency Operation
driving typical 10.4” to 15” TFT panels.
The LXMG1628 modules are available from the system battery or AC adapter
with dimming input that permits directly to the high frequency, high-
brightness control from a DC voltage voltage waves required to ignite and
source, PWM signal, or external operate CCFL lamps. A 5V input wide
potentiometer. The maximum output dimming inverter is also available
The modules convert the DC voltage
a
Rated From -30°C to 80°C
UL60950 E175910 Pending
RoHS Compliant
a
current is externally programmable over a (LXMG1627-05-6x), as well as a 4W
range of 5mA to 8mA in 1mA steps to version (LXMG1628-12-4x) for driving
allow the inverter to properly match to a smaller lower power/voltage panels.
APPLICATIONS
High Brightness Displays
Portable Instrumentation
Desktop Displays
wide array of LCD panel lamp current
specifications.
The inverter’s design is based on
Microsemi’s newer backlight controller,
Industrial Display Controls
LXMG1628 modules unlike the which provides a number of cost and
LXMG1627 series does not provide wide performance advantages due to the
range ‘burst’ mode dimming, rather controller’s high level of integration.
BENEFITS
Compact, Low Profile Design
Programmable Output Current
Allows Inverter To Mate With A
Wide Variety Of LCD Panel’s
Specifications
Output Open Circuit Voltage
Regulation Minimizes Corona
Discharge For High Reliability
dimming is provided by amplitude control
Other benefits of this new topology
of the output current waveform, and this are stable fixed-frequency operation,
limits the potential dim range to typically secondary-side strike-voltage regulation
less than 3:1. For applications not and both open and short protection with
requiring wide range dimming, current
fault timeout.
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; 6,198,234; Patents Pending
PRODUCT HIGHLIGHT
UNIVERSAL DIMMING INPUT
“PWM”, VDC, or POTENTIOMETER
PWM
Signal
DC Voltage
Source
Potentiometer
W
W
SELECTABLE MAXIMUM OUTPUT
CURRENT 5mARMS TO 8mARMS
PACKAGE ORDER INFO
INVERTER MATES DIRECTLY TO
PANEL CONNECTORS
PART NUMBER
OUTPUT CONNECTOR
LXMG1628-12-61
LXMG1628-12-62
JST SM02(8.0)B-BHS-1-TB(LF)(SN) or Yeon Ho 20015WR-05A00
JST SM02B-BHSS-1-TB(LF)(SN) or Yeon Ho 35001WR-02A00
JST BHR-03VS-1
JST BHSR-02VS-1
Copyright © 2008
Rev. 1.0, 2008-12-03
Microsemi
Page 1
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 800-877-6458, 714-898-8121, Fax: 714-893-2570
PanelMatch™
LXMG1628-12-6x
®
12V Dual 6W Programmable CCFL Inverter Module
PRODUCTION DATASHEET
TM
ABSOLUTE MAXIMUM RATINGS
Input Signal Voltage (VIN)......................................................................................................................................-0.3V to 15V
Input Power....................................................................................................................................................................... 15W
Output Voltage, no load ............................................................................................................ Internally Limited to 1800VRMS
Output Current ............................................................................................................................9.5mARMS (Internally Limited)
Output Power (each output) ............................................................................................................................................. 6.0W
Input Signal Voltage (
Input) ...................................................................................................................... -0.3V to VIN
SLEEP
Input Signal Voltage (BRITE) ...............................................................................................................................-0.3V to 5.5V
Ambient Operating Temperature, zero airflow.....................................................................................................-30°C to 80°C
Operating Relative Humidity, non-condensing ................................................................................................................ ≤90%
Storage Temperature Range...............................................................................................................................-40°C to 85°C
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, may 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
VIN
V
12
5.5
13.8
6.0
2
720
8
PO
VBRT_ADJ
VLAMP
IOLAMP
TA
W
V
VRMS
mARMS
°C
0
480
5
600
-30
80
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, the following specifications apply over the recommended operating condition and ambient temperature of
0°C to 60°C except where otherwise noted; BRITE ≥ 2V,
> 2.0V, VIN = 12V.
SLEEP
LXMG1628-12-6x
Parameter
Symbol
Test Conditions
Units
Min
Typ
Max
OUTPUT PIN CHARACTERISTICS
Full Bright Lamp Current (each output)
Full Bright Lamp Current (each output)
Full Bright Lamp Current (each output)
Full Bright Lamp Current (each output)
`
IL(MAX)
IL(MAX)
IL(MAX)
IL(MAX)
SET1 = Ground, SET2 = Ground
SET1 = Ground, SET2 = Open
SET1 = Open, SET2 = Ground
SET1 = Open, SET2 = Open
4.4
5.4
6.4
7.4
5
6
7
8
5.6
6.6
7.6
8.6
mARMS
mARMS
mARMS
mARMS
Output Current Lamp to Lamp
Deviation
Min. Average Lamp Current
(each output)
ILL%DEV
IL(MIN)
SET1 = Open, SET2 = Open
3
10
%
BRITE = 0V, SET1 = SET2 = Ground
-30°C < TA < 80°C, VIN > 10.8V
2.5
mARMS
Lamp Start Voltage
Operating Frequency
VLS
fO
1500
47
1650
50
VRMS
kHz
53
Copyright © 2008
Rev. 1.0, 2008-12-03
Microsemi
Page 2
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 800-877-6458, 714-898-8121, Fax: 714-893-2570
PanelMatch™
LXMG1628-12-6x
®
12V Dual 6W Programmable CCFL Inverter Module
PRODUCTION DATASHEET
TM
ELECTRICAL CHARACTERISTICS (CONTINUED)
Unless otherwise specified, the following specifications apply over the recommended operating condition and ambient temperature of
0°C to 60°C except where otherwise noted; BRITE ≥ 2V,
> 2.0V, VIN = 12V.
SLEEP
LXMG1628-12-6x
Parameter
Symbol
Test Conditions
Units
Min
Typ
Max
BRITE INPUT
`
`
BRITE= 0V
BRITE= 3V
-11
-1
1.9
µA
µA
V
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
Minimum PWM Input Frequency
2.0
0
V
FBRT_PWM
%BRITE_PWM < 50% (Visual Artifact Avoidance)
kHz
2
SLEEP INPUT
VSLEEP
VSLEEP
RUN Mode
2.0
0
VIN
0.8
V
V
SLEEP Mode
SET1,2 INPUT
`
`
SET1,2 Low Threshold
Input Current
VL
ISET
0
0.4
20
V
µA
SETx = 0V
-300
POWER CHARACTERISTICS
Sleep Current
IIN(MIN)
IIN(RUN)
< 0.8V
1
µA
mA
Sec
SLEEP
Run Current
SET1 = Open, SET2 = Ground, VLAMP = 600VRMS
875
1.5
Strike (Open Lamps)
TS_DWELL
1.0
Supply Current After Fault Timeout
Efficiency
IFAULT
Fault Timeout
mA
%
8
SET1 = Open, SET2 = Ground, VLAMP = 600VRMS
82
η
FUNCTIONAL PIN DESCRIPTION
CONN
PIN
DESCRIPTION
CN1 (Molex 53261-0871) Mates with 51021-0800 housing, 50079-8100 pins. Mates with LX9501G input cable assembly
CN1-1
VIN
Main Input Power Supply (10.8V < VIN < 13.2V)
Power Supply Return
CN1-2
CN1-3
CN1-4
GND
CN1-5
ON/OFF Control. (0V ≤
≤ 0.8 = OFF,
≥ 2.0V = ON
SLEEP
SLEEP
BRITE
SET1
SLEEP
CN1-6
CN1-7
CN1-8
Brightness Control (0V to 2V). 2V 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, CN3 for LXMG1628-12-61 and -62
(JST SM02(8.0)B-BHS-1-TB(LF)(SN) | Yeon Ho 20015WR-05A00 or SM02B-BHSS-1-TB(LF)(SN) | Yeon Ho 35001WR-
02A00)
CN2-1
CN3-1
High voltage connection to high side of lamp. Connect to lamp terminal with shortest lead length.
DO NOT connect to Ground
VHI
CN2-2
CN3-2
Connection to low side of lamp. Connect to lamp terminal with longer lead length.
DO NOT connect to Ground
VLO
Copyright © 2008
Rev. 1.0, 2008-12-03
Microsemi
Page 3
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 800-877-6458, 714-898-8121, Fax: 714-893-2570
PanelMatch™
LXMG1628-12-6x
®
12V Dual 6W Programmable CCFL Inverter Module
PRODUCTION DATASHEET
TM
TABLE 1
OUTPUT CURRENT SETTINGS
SET1
SET2
(Pin 8)
Open*
Ground
Open*
Nominal Output Current
(Pin 7)
Open*
Open*
Ground
Ground
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 XMG1628 -12-6 x
GROUNDED MOUNTING HOLE 3MM ±.08 DIA.
6MM HEAD CLEARANCE BOTH HOLES
165mm
6.496 in.
151mm
5.945 in.
Warning
High Voltage is present at
high side of each transformer,
its core and the high side of
the output connector pins,
please provide at least 3 mm
clearance (in all directions) on
the component side of the
board to any conductor when
mounting
MOUNTING HOLE 3.06MM
±.08 DIA.
CN
18mm
3mm
CN2
21mm
CN3
.708 in.
.118 in
0.827in
14mm
.551 in
137mm ±0.2
1mm ± 0.1
0.0395 in.
5.394 in.
10mm Max
0.394in.
weight: 22g typ.
PCB tolerances ± 0.5mm , 4-40 recommended mounting screws
Dimensions are in millimeters (inches for reference only)
SIMPLIFIED BLOCK DIAGRAM
+3V
High Voltage
Transformer
Controller
232k
VHI
BRITE
VIN
46.4k
Transformer
Driver
+3V
10k
SET1
SET2
+3V
OVSENSE
ISENSE
10k
VLO
One of two
Copyright © 2008
Rev. 1.0, 2008-12-03
Microsemi
Page 4
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 800-877-6458, 714-898-8121, Fax: 714-893-2570
PanelMatch™
LXMG1628-12-6x
®
12V Dual 6W Programmable CCFL Inverter Module
PRODUCTION DATASHEET
TM
TYPICAL APPLICATION
The brightness control may be a voltage output DAC or
12V
VIN
Voltage Source,
DAC, or
Potentiometer
other voltage source, a digital pot or 500k manual
potentiometer. The inverter contains an internal 278k pull-
up to 3V to provide bias for the pot. A PWM logic level
signal (figure 1A) may be used up to 5V; however the
inverter will reach maximum current at less than 100%
duty cycle. This can be calculated as approximately 2V
divided by the logic high voltage level; with 3.3V logic
level this corresponds to about 60% duty cycle for
maximum lamp current.
VHI
BRITE
0V to
2V
500k
CCFL
TUBE
LXMG1628-12-6x
VLO
SLEEP
SET1
If you need to turn the inverter ON/OFF remotely, connect
ONE OF
TWO
SET2
NC
GND
to TTL logic signal to the
input.
SLEEP
NC
Connect VHI to high voltage wire from the lamp. Connect
V
LO 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 manufacturers. Generally the best
lamp lifetime correlates with driving the CCFL at the
manufacturer’s 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.
LXMG1628-12-6x
10µs to 500µS
0 < P.W. < 100% of period
Figure 1A – PWM Brightness Control
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.
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 user’s
responsibility since not all lamps are designed to be
overdriven.
12V
VIN
BRITE
VHI
CCFL
TUBE
LXMG1628-12-6x
SLEEP
SET1
VLO
SET2
GND
ONE OF
TWO
The inverter has a built in fault timeout function. If either
or both outputs are open (lamp disconnected or broken) the
inverter will attempt to strike for about a 1.5 seconds and
then shutdown for safety purposes. In order to restart the
inverter it is necessary to toggle the sleep input or cycle the
L
L
H
H
L
H
L
5.0mARMS
6.0mARMS
7.0mARMS
8.0mARMS
V
IN input supply.
H
L=GND; H=Open
Figure 2 – Maximum Output Current
(SET1 and SET2 Inputs)
Copyright © 2008
Rev. 1.0, 2008-12-03
Microsemi
Page 5
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 800-877-6458, 714-898-8121, Fax: 714-893-2570
PanelMatch™
LXMG1628-12-6x
®
12V Dual 6W Programmable CCFL Inverter Module
PRODUCTION DATASHEET
TM
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 © 2008
Rev. 1.0, 2008-12-03
Microsemi
Analog Mixed Signal Group
Page 6
11861 Western Avenue, Garden Grove, CA. 92841, 800-877-6458, 714-898-8121, Fax: 714-893-2570
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