LXMG1626-12-66 [MICROSEMI]
12V 10W Dual CCFL Programmable Inverter Module; 12V 10W双CCFL可编程逆变器模块
| 型号： | LXMG1626-12-66 |
| 厂家： | 
Microsemi |
| 描述： | 12V 10W Dual CCFL Programmable Inverter Module |
| 文件： | 总6页 (文件大小：189K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PanelMatch™
LXMG1626-12-66
12V 10W Dual CCFL Programmable Inverter Module
®
TM
PRODUCTION DATA SHEET
KEY FEATURES
DESCRIPTION
The LXMG1626-12-66¹ is a 10W Dual
RangeMAX™
Digital
Dimming
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
Rated From -20 to 70°C
RoHS Compliant
Output Direct Drive™ CCFL (Cold Cathode Technique provides flicker-free brightness
Fluorescent Lamp) Inverter Module control in any wide range typically (100:1+)
specifically designed to be compatible with a dimming application.
variety of LCD panels: A number of NEC
The design of the resultant “burst drive”
and a few Optrex, Prime View, AUO, and that energizes the lamp specifically ensures
other panels that have both lamps on one side that no premature lamp degradation occurs,
of the panel and use a single common lamp while allowing significant power savings at
return wire with non-standard output lower dim levels.
polarity. LXMG1626 modules provide the
The modules convert DC voltage from
designer with a vastly superior display the system battery or AC adapter directly to
brightness range. This brightness range is high frequency, high-voltage waves
APPLICATIONS
achievable with virtually any LCD display.
The modules are available with
dimming input that permits brightness Microsemi’s LX1691B backlight controller,
control from a Direct Current voltage source, which provides a number of cost and
required to ignite and operate CCFL lamps.
The modules design utilizes
Dual Lamp LCD’s Requiring a
Shared Common Lamp Return
Mates to a single JST BHR-
03VS-1 Lamp Connector
Output Connector Polarity 1:low,
2:high, 3:high
a
a PWM signal, or external Potentiometer.
performance advantages due to the
The maximum output current is controller’s high level of integration. A 5V
externally programmable (through the input input supply version (LXMG1626-05-66) is
connector) over a range of 10 to 14mA in also available.
Desktop Displays
Industrial Display Controls
steps. This allows the inverter to match the
panel’s lamp current specifications, or it can stable
be used to purposely drive the lamps at a secondary-side strike-voltage regulation and
lower or higher current to decrease or both open/shorted lamp protection with
increase nominal brightness.
Other benefits of this new topology are
fixed-frequency operation,
BENEFITS
Smooth, Flicker Free 1%-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
fault timeout.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
¹ Protected by U.S. Patents 5,923,129; 5,930,121, 6,198, 234; Patents Pending
PRODUCT HIGHLIGHT
PWM
Signal
DC Voltage
Source
Potentiometer
Microsemi
W
UNIVERSAL DIMMING INPUT
"PWM", VDC, OR POTENTIOMETER
Lamp current 10 to 14mA in steps
PACKAGE ORDER INFO
INVERTER MATES DIRECTLY
TO PANEL CONNECTORS
JST BHR-03VS-1
PART NUMBER
OUTPUT CONNECTOR
LXMG1626-12-66
JST SM03(4.0)B-BHS-1-TB(LF)(SN) or Yeon Ho 20015WR-05A00
Copyright © 2005
Rev. 1.0, 2005-11-15
Microsemi
Page 1
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
PanelMatch™
LXMG1626-12-66
12V 10W Dual CCFL Programmable Inverter Module
®
TM
PRODUCTION DATA SHEET
ABSOLUTE MAXIMUM RATINGS (NOTE 1)
Input Signal Voltage (VIN1).....................................................................................................................................-0.3V to 16V
Input Power....................................................................................................................................................................... 14W
Output Voltage, no load ............................................................................................................ Internally Limited to 1800VRMS
Output Current ............................................................................................................................7.5mARMS (Internally Limited)
Output Power .................................................................................................................................................................... 10W
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
Operating Relative Humidity, non-condensing ................................................................................................................ ≤90%
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
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
8
14.4
9
2.0
620
14
PO
VBRT_ADJ
VLAMP
IOLAMP
TA
W
V
VRMS
mARMS
°C
0
460
10
540
-20
70
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, the following specifications apply over the recommended operating condition and ambient temperature of
25°C except where otherwise noted.
LXMG1626-12-66
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 (two lamps)
IL(MAX)
IL(MAX)
IL(MAX)
IL(MAX)
ILL%DEV
IL(MIN)
8.8
10
11.5
12.8
14
11
12.5
13.8
15
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 (two lamps)
Full Bright Lamp Current (two lamps)
Full Bright Lamp Current (two lamps)
10.3
11.3
12.3
,
SLEEP
ISET1 = Open, ISET2 = Ground
VBRT_ADJ > 2.0VDC
,
SLEEP
ISET1 = Open, ISET2 = Open
VBRT_ADJ > 2.0VDC
Output Current Lamp to Lamp
Deviation
,
SLEEP
ISET1 = Open, ISET2 = Open
VBRT_ADJ = 0VDC
5
,
SLEEP
Min. Average Lamp Current
1.4
mARMS
ISET1 = ISET2 = GND; IMIN = IMAX * √ of % Duty Cycle
Lamp Start Voltage
Operating Frequency
Burst Frequency
VLS
fO
-20°C < TA < 70°C, VIN1 > 10.8VDC
1450
62
1600
65
VRMS
kHz
Hz
V
BRT_ADJ = 2.0VDC
,
> 2.0V, VIN1 = 12V
68
SLEEP
fBURST
Output Burst Frequency
242
254
266
Copyright © 2005
Rev. 1.0, 2005-11-15
Microsemi
Page 2
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
PanelMatch™
LXMG1626-12-66
12V 10W Dual CCFL Programmable Inverter Module
®
TM
PRODUCTION DATA SHEET
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.
LXMG1626-12-66
Parameter
Symbol
Test Conditions
Units
Min
Typ
Max
BRITE INPUT
`
VBRT_ADJ = 0VDC
VBRT_ADJ = 3VDC
-13.2
1
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
2.05
VDC
VDC
0
`
`
`
VSLEEP
VSLEEP
RUN Mode
2.1
VIN1
0.8
VDC
VDC
SLEEP Mode
-0.3
SET1,2 INPUT
SET1,2 Low Threshold
Input Current
VL
0.4
50
V
ISET
VSET ≤ 0.4V
-300
µA
POWER CHARACTERISTICS
Sleep Current
IIN(MIN)
IIN(RUN)
V
IN1 = 12VDC
,
,
< 0.8V
0.0
10
µADC
SLEEP
SLEEP
VIN1 = 12VDC
≥ 2.0V, ISET1 = Ground
Run Current
Efficiency
590
mADC
ISET2 = Open, VLAMP = 520VRMS
IN1 = 12VDC ≥ 2.0V, ISET1 = Ground
V
,
SLEEP
ISET2 = Open, VLAMP = 520VRMS
85
%
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
VIN1
Main Input Power Supply (10.8V < VIN1 < 13.2V)
Power Supply Return
CN1-2
CN1-3
CN1-4
GND
CN1-5
ON/OFF Control. (0V <
< 0.8 = OFF,
>= 2.1V = ON
SLEEP
SLEEP
BRITE
SET1
SLEEP
CN1-6
CN1-7
CN1-8
Brightness Control (0V 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 for LXMG1626-12-66(JST SM03(4.0)B-BHS-1-TB(LF)(SN) or Yeon Ho 20015WR-05A00)
CN2-1
CN2-2
CN2-3
Connection to low side of lamp. Connect to lamp terminal with longer lead length.
DO NOT connect to Ground
VLO
VHI1
VHI2
High voltage connection to high Side of lamp. Connect to lamp terminal with shortest lead length.
DO NOT connect to Ground.
High voltage connection to high Side of lamp. Connect to lamp terminal with shortest lead length.
DO NOT connect to Ground.
Copyright © 2005
Rev. 1.0, 2005-11-15
Microsemi
Page 3
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
PanelMatch™
LXMG1626-12-66
12V 10W Dual CCFL Programmable Inverter Module
®
TM
PRODUCTION DATA SHEET
TABLE 1
OUTPUT CURRENT SETTINGS
SET1
SET2
(Pin 8)
Open*
Ground
Open*
Nominal Output Current
(Pin 7)
Open*
Open*
Ground
Ground
14.0mA
12.8mA
11.5mA
10.0mA
Ground
* If driven by a logic signal it should be open collector or open drain only, not a voltage source.
PHYSICAL DIMENSIONS
L XMG1626 -12-6 6
UNPLATED MOUNTING HOLE 3MM ±.08 DIA.
6MM HEAD CLEARANCE BOTH HOLES
133mm
5.24in.
119mm
4.69in.
CN1
W
CN2
25mm
0.984in.
21mm
0.827in.
4.0mm
0.157in.
W
16mm
0.630in.
GROUNDED MOUNTING HOLE
3MM ±.08 DIA.
1.0mm
0.0394in.
7.5mm
0.295in.
Max
weight: 18g
PCB tolerances ± 0.5mm , 4-40 recommended mounting screws
SIMPLIFIED BLOCK DIAGRAM
+3V
215K
High Voltage
Transformer
Controller
VHI2
VHI1
Comparator
VBRITE
10K
+
-
VIN1
0 - 2VDC
Ramp
Transformer
Driver
10uF
Ramp
Gen
+3V
10K
OCSENSE
SET1
SET2
One of two
+3V
OVSENSE
ISENSE
10K
VLO
Copyright © 2005
Rev. 1.0, 2005-11-15
Microsemi
Page 4
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
PanelMatch™
LXMG1626-12-66
12V 10W Dual CCFL Programmable Inverter Module
®
TM
PRODUCTION DATA SHEET
TYPICAL APPLICATION
5V
The brightness control may be a voltage output DAC or
DAC or
Pot
other voltage source, a digital pot or 500K manual pot. The
inverter contains an internal 215K pull-up to 3V to bias the
pot. A 3.3V Logic Level PWM signal from a micro-
controller may also be used as shown in Figure 1A.
VIN1
BRITE
VHI1
VHI2
500K
LXMG1626-12-66
If you need to turn the inverter ON/OFF remotely, connect
to TTL logic signal to the
input.
SLEEP
Connect VHI1 and VHI2 to high voltage wires from the
lamps. Connect VLO to the low voltage wire lamp return
(wire with thinner insulation). Never connect VLO to
circuit ground, as this will defeat lamp current regulation.
If both lamp wires have heavy high voltage insulation,
SLEEP
VLO
SET1
SET2
NC
GND
NC
connect the longest wire to VLO. This wire is typically
Figure 1 – Brightness Control
white.
(Output current set to maximum)
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.
LXMG1626-12-66
5µs to 100µS
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 an 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
5V
VHI1
VHI2
VIN1
BRITE
LXMG1626-12-66
SLEEP
SET1
VLO
SET2
GND
L
L
H
H
L
H
L
10.0mARMS
11.5mARMS
12.8mARMS
14.0mARMS
The inverter has a built in fault timeout function. If both
outputs are open (lamps disconnected or broken) or shorted
to ground the inverter will attempt to strike the lamp for
number of cycles. After about one to two seconds 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
H
L=GND; H=Open
Figure 2 – Max Output Current
(SET1 and SET2 Inputs)
Copyright © 2005
Rev. 1.0, 2005-11-15
Microsemi
Page 5
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
PanelMatch™
LXMG1626-12-66
12V 10W Dual CCFL Programmable Inverter Module
®
TM
PRODUCTION DATA SHEET
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 © 2005
Rev. 1.0, 2005-11-15
Microsemi
Integrated Products
Page 6
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
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