LXMG1627-12-61 [MICROSEMI]
12V Dual 6W Programmable CCFL Inverter Module; 12V双路6W可编程CCFL逆变器模块
| 型号： | LXMG1627-12-61 |
| 厂家： | 
Microsemi |
| 描述： | 12V Dual 6W Programmable CCFL Inverter Module |
| 文件： | 总6页 (文件大小：184K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PanelMatch™
LXMG1627-12-6x
®
12V Dual 6W Programmable CCFL Inverter Module
PRODUCTION DATASHEET
TM
KEY FEATURES
DESCRIPTION
The LXMG1627-12-6x is a Dual 6W
The resultant “burst drive” that
Externally Programmable
Maximum Output Current
Easy to Use Brightness Control
RangeMAX™ Wide Range
Dimming
Output Open/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 typical 10.4” to 15” TFT panels.
LXMG1627 modules provide the
designer with a vastly superior display the system battery or AC adapter directly
brightness range. This brightness range is to high frequency, high-voltage waves
achievable with virtually any LCD display. required to ignite and operate CCFL
The modules are available with a lamps. A 5V input inverter is also
dimming input that permits brightness available (LXMG1627-05-6x), as well as
control from either a DC voltage source or 4W versions (LXMG1627-xx-4x) for
a PWM signal or external potentiometer. driving smaller lower voltage/power
The maximum output current is externally panels.
levels.
The modules convert DC voltage from
Rated From -30°C to 80°C
UL60950 E175910 Pending
RoHS Compliant
APPLICATIONS
High Brightness Displays
Portable Instrumentation
Desktop Displays
programmable over a range of 5mA to
8mA in 1mA steps to allow the inverter to Microsemi’s
properly match to a wide array of LCD controller, which provides a number of
The module’s design is based on
Industrial Display Controls
LX6512 backlight
BENEFITS
panel lamp current specifications.
RangeMAX™ Digital
cost and performance advantages due to
Smooth, Flicker Free 2%-
100% Full-Range Brightness
Control
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 the controller’s high level of integration.
Technique provides flicker-free brightness
control in any wide range typically (50:1+) are stable fixed-frequency operation,
dimming application.
Other benefits of this new topology
secondary-side strike-voltage regulation
and both open and short protection with
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
LXMG1627-12-61
LXMG1627-12-62
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™
LXMG1627-12-6x
®
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
2.5
720
8.0
80
PO
VBRT_ADJ
VLAMP
IOLAMP
TA
W
V
VRMS
mARMS
°C
0
480
5.0
-30
600
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 > 2.5V, > 2.0V, VIN = 12V.
SLEEP
LXMG1627-12-6x
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
mARMS
mARMS
mARMS
mARMS
4.4
5.4
6.4
7.4
5.0
6.0
7.0
8.0
5.6
6.6
7.6
8.6
Output Current Lamp to Lamp
Deviation
ILL%DEV
IL(MIN)
SET1 = Open, SET2 = Open
2
5
%
BRITE = 0V SET1 = SET2 = Ground
Min. Average Lamp Current
(each output)
1.0
mARMS
I
L(MIN) = ILMAX *
Burst Duty Cycle
Lamp Start Voltage
Operating Frequency
Burst Frequency
VLS
fO
-30°C < TA < 80°C, VIN > 10.8V
1500
45
1650
50
VRMS
kHz
Hz
55
fBURST
Output Burst Frequency
165
200
235
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™
LXMG1627-12-6x
®
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 > 2.5V,
> 2.0V, VIN = 12V
SLEEP
LXMG1627-12-6x
Parameter
Symbol
Test Conditions
Units
Min
Typ
Max
BRITE INPUT
`
BRITE = 0V
BRITE = 3V
-13.4
-5
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
SLEEP INPUT
2.1
0
2.3
2.5
V
`
`
`
VSLEEP
VSLEEP
RUN Mode
2.0
0
VIN
0.8
V
V
SLEEP Mode
SET1,2 INPUT
SET1,2 Low Threshold
Input Current
VL
0
0.4
20
V
ISET
SETx = 0V
-85
µA
POWER CHARACTERISTICS
Sleep Current
IIN(MIN)
IIN(RUN)
TS_DWELL
IFAULT
η
< 0.8V
2
875
1.5
7
µA
mA
Sec
mA
%
SLEEP
Run Current
SET1 = Open, SET2 = Ground, VLAMP = 600VRMS
Strike (Open Lamps)
Supply Current After Fault Timeout
Efficiency
1.0
Fault Timeout
SET1 = Open, SET2 = Ground, VLAMP = 600VRMS
80
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 2.5V). 2.5V gives maximum lamp current; 500k manual pot; PWM signal.
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 LXMG1627-12-61 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™
LXMG1627-12-6x
®
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 XMG1627 -12-6 x
GROUNDED MOUNTING HOLE 3MM ±.08 DIA.
6MM HEAD CLEARANCE BOTH HOLES
165mm
6.496 in.
151mm
Warning
5.945 in.
18mm
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.
.708 in.
CN1
3mm
.118 in
CN2
21mm
0.827in
CN3
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
+4.2V
High Voltage
Transformer
Controller
Comparator
VHI
249k
BRITE
+
-
VIN
49.9k
Transformer
Driver
Ramp
Ramp
Gen
+4.2V
47k
SET1
SET2
+4.2V
47k
OVSENSE
ISENSE
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™
LXMG1627-12-6x
®
12V Dual 6W Programmable CCFL Inverter Module
PRODUCTION DATASHEET
TM
TYPICAL APPLICATION
12V
VIN
Voltage Source,
DAC, or
Potentiometer
The brightness control may be a voltage output DAC or
other voltage source, a digital pot or 500k manual pot. The
inverter contains an internal 300k pull-up to typically 4.2V
to bias the pot. PWM Logic levels (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 2.3V divided by the logic high
voltage level; with 3.3V logic level this corresponds to
about 70% duty cycle for maximum lamp current.
VHI
BRITE
0V to
2.5V
500k
CCFL
TUBE
LXMG1627-12-6x
VLO
SLEEP
SET1
ONE OF
TWO
SET2
NC
GND
If you need to turn the inverter ON/OFF remotely,
connect to TTL logic signal to the SLEEP input.
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.
PWM Signal
from System
BRITE
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.
P.W.
LXMG1627-12-6x
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 users
responsibility since not all lamps are designed to be
overdriven.
12V
VIN
BRITE
VHI
CCFL
TUBE
LXMG1627-12-6x
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
VIN input supply.
L
L
H
H
L
H
L
5.0mARMS
6.0mARMS
7.0mARMS
8.0mARMS
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™
LXMG1627-12-6x
®
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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