LXMG1615-03-02 [MICROSEMI]
3.6/5V 2W, DIGITAL DIMMING CCFL INVERTER MODULE; 3.6 / 5V 2W ，数字调光CCFL逆变器模块
| 型号： | LXMG1615-03-02 |
| 厂家： | 
Microsemi |
| 描述： | 3.6/5V 2W, DIGITAL DIMMING CCFL INVERTER MODULE |
| 文件： | 总6页 (文件大小：150K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
RangeMAX™
LXMG1615-03-xx
®
3.6/5V 2W, DIGITAL DIMMING CCFL INVERTER MODULE
TM
PRODUCTION DATA SHEET
KEY FEATURES
DESCRIPTION
The resultant “burst drive” that
energizes the lamp was designed
specifically to ensure that no premature
lamp degradation occurs (See the “How
RangeMAX Works” section).
VBATT Voltage Range. The modules
convert the DC voltage from a single li-
ion battery (3.2-4.2V) or a fixed 5V
supply directly to high-frequency, high-
voltage waves required to ignite and
operate CCFL lamps.
RangeMAX Wide Range
Dimming
RangeMAX™ Wide Range Dimming,
Single Output Inverter. The LXMG1615
series of Direct Drive CCFL (Cold
Cathode Fluorescent Lamp) Inverter
Modules are specifically designed for
driving 8.4” and smaller LCD backlight
lamps. They also target portable displays
that rely on a single lithium-ion battery.
LXMG1615 modules provide the
designer with a vastly superior display
brightness range. This brightness range is
achievable with virtually any LCD
display.
VBATT – Single Li-Ion Cell
Operation Or Fixed 5V
Easy to Use Brightness Control
Output Short-Circuit Protection
and Automatic Strike-Voltage
Regulation
Fixed Frequency Operation
RoHS Compliant
APPLICATIONS
PDA And Sub-Notebook
Computers
Portable Instrumentation
Direct Drive Technology.
The
modules design is based on a new Direct
Drive topology, which provides a number
of cost and performance advantages.
Additional Features. Other benefits
of this new topology are fixed-frequency
operation, secondary-side strike-voltage
regulation and both open and shorted lamp
protection.
Target 8.4” And Smaller Panels
RangeMAX™ Digital Dimming
Technique. Digital dimming provides
flicker-free brightness control in any wide
range (100:1+) dimming application.
BENEFITS
Smooth, Flicker Free 1-100%
Full-Range Brightness Control
Output Open Circuit Voltage
Regulation Minimizes Corona
Discharge For High Reliability
Power Efficient, “Low
The modules are available with
a
dimming input that permits brightness
control from either a DC voltage source or
a PWM signal.
Brightness” Capability Allows
For Advanced Power
Management
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; Patents Pending
PRODUCT HIGHLIGHT
PDAs, Digital Cameras,
Video Camcorder,
Instrumentation, Handheld GPS
3.2 - 4.2V
FOR LOWER VOLTAGE LAMPS
Li-Ion Battery
CCFL
260 - 380VRMS
VBATT
VLAMP
LXMG1615
Instrumentation, Sub Notebooks,
Digital Picture Frames
4.5 - 5.5V
FOR HIGHER VOLTAGE LAMPS
CCFL
350 - 515VRMS
O N E I N VE R T E R S U P P O R T S E I T H E R VO LT AG E R AN G E
MODULE ORDER INFO
INVERTER MATES DIRECTLY TO
PART NUMBER
OUTPUT CONNECTOR
PANEL CONNECTORS
LXMG1615-03-01 JST SM02(8.0)B-BHS-1-TB(LF)(SN) or Yeon Ho 20015WR-05A00
BHR-03VS-1
JST SM02B-BHSS-1-TB(LF)(SN) or Yeon Ho 35001WR-02A00
Honda QZ-19-A3MYL #02
LXMG1615-03-02
LXMG1615-03-03
BHSR-02VS-1
Honda QZ-19-3F01
Copyright © 2000
Rev. 1.0, 2006-03-23
Microsemi
Page 1
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
RangeMAX™
LXMG1615-03-xx
®
3.6/5V 2W, DIGITAL DIMMING CCFL INVERTER MODULE
TM
PRODUCTION DATA SHEET
ABSOLUTE MAXIMUM RATINGS
Input Supply Voltage (VBATT) ..............................................................................................................................-0.3V to 6.5V
Input Supply Voltage 3.3V (+3.3) .......................................................................................................................-0.3V to 5.5V
Output Voltage, no load........................................................................................................... Internally Limited to 1800VRMS
Output Current ..........................................................................................................................4.5mARMS (Internally Limited)
Output Power ................................................................................................................................................................. 2.1W
Input Signal Voltage (BRITE Input) ..........................................................................................................-0.3V to 3.3V +0.3V
Input Signal Voltage (SYNC)....................................................................................................................-0.3V to 3.3V +0.3V
Ambient Operating Temperature, zero airflow......................................................................................................0°C to 70°C
Storage Temperature Range.............................................................................................................................-40°C to 85°C
Note: 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
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 (+3.3V)
+3.3
VBATT
VBATT
PO
3.1
3.2
4.5
1
1.5
0.0
260
350
3.3
3.6
5.0
1.2
1.7
3.5
4.2
5.5
1.5
2
2.2
380
515
V
V
V
W
W
V
V
BATT Voltage Range (VBATT = 3.6V)
BATT Voltage Range (VBATT = 5.0V)
Output Power (VBATT = 3.6V)
Output Power (VBATT = 5.0V)
Brightness Control Input Voltage Range
Lamp Operating Voltage (VBATT = 3.6V)
Lamp Operating Voltage (VBATT = 5.0V)
Lamp Current (Full Brightness)
PO
VBRT_ADJ
VLAMP
VLAMP
IOLAMP
TA
V
305
445
4.0
VRMS
VRMS
mARMS
°C
Operating Ambient Temperature Range
0
70
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, these specifications apply over the recommended operating conditions and 25°C ambient temperature for the LXMG1615-03-xx.
LXMG1615-03-xx
Parameter
Symbol
Test Conditions
Units
Min
Typ Max
`
`
OUTPUT PIN CHARACTERISTICS
Full Bright Lamp Current
Min. Average Lamp Current (Note 2)
Lamp Start Voltage
Operating Frequency
BRITE INPUT
IL(MAX)
IL(MIN)
VLS
VBRT_ADJ = 0V, VBATT = 3.6V or 5V
VBRT_ADJ = 2.2VDC, VBATT = 3.6V or 5V
VBATT=3.2 –4.2V or 4.5V to 5.5V
VBRT_ADJ = 0VDC
3.5
4.0
.08
4.5
mARMS
mARMS
VRMS
1250
80
1400 1800
90
FO
100
KHz
Linear Dim Control Range
VBRT
IBRT
VBRT_ADJ
VBRT_ADJ
.25
-21
250
0
2.2
-41
290
.25
2.5
VDC
µADC
µADC
VDC
VBRT_ADJ = 0VDC
VBRT_ADJ = 2.5VDC
IO(LAMP) = 100% Duty Cycle
IO(LAMP) = Minimum Duty Cycle
-27
268
Input Current
Input Voltage for Max. Lamp Current
Input Voltage for Min. Lamp Current
2.2
VDC
`
`
+3.3V
RUN Mode
OFF Mode
ENABLE
DISABLE
IINRUN
+3.3V = High
+3.3V = Low
3.1
-0.3
3.3
0.0
10
3.5
2.7
20
VDC
VDC
Input Current
+3.3V ± 5%
mA
IINPK
100
VSYNC CHARACTERISTICS
Logic High Threshold
Logic Low Threshold
Input Impedance
VSYNC (HI)
VSYNC (LO)
ZIN
FVSYNC
FBURST
+3.3V = 3.3V ± 5%
+3.3V = 3.3V ± 5%
2.2
45
VDC
VDC
KΩ
Hz
.8
10
Input Frequency
Free Run Frequency
400
Output Burst Rate; VSYNC=0V
530
Hz
Copyright © 2000
Rev. 1.0, 2006-03-23
Microsemi
Page 2
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
RangeMAX™
LXMG1615-03-xx
®
3.6/5V 2W, DIGITAL DIMMING CCFL INVERTER MODULE
TM
PRODUCTION DATA SHEET
ELECTRICAL CHARACTERISTICS (CONTINUED)
Unless otherwise specified, these specifications apply over the recommended operating conditions and 25°C ambient temperature for the LXMG1615-03-xx.
LXMG1615-03-xx
Parameter
Symbol
Test Conditions
Units
Min
Typ Max
`
POWER CHARACTERISTICS
Run Current
Run Current
V
BATT= 3.6VDC
VBRT_ADJ = 0V, VLAMP = 270VRMS
VBRT_ADJ = 0V, VLAMP = 420VRMS
360
405
mA
mA
VBATT= 5.0VDC
Note 2: Minimum lamp current required to maintain even light output may vary with display panel.
AverageRMS current = (burst duty cycle) × (burst amplitude of 4.0mARMS
)
FUNCTIONAL PIN DESCRIPTION
Conn.
Pin
Description
CN1 (Molex 53261-0571)*
CN1-1
CN1-2
CN1-3
CN1-4
CN1-5
VBATT
GND
Main Input Power Supply (3.1V to 5.5V)
Power Supply Return
+3.3V Logic Input
+3.3V
BRITE Brightness Control (0.25- 2.2VDC) 0.25VDC gives maximum lamp current
VSYNC Vertical Synchronization Input 3.3V Logic Level (45 < fSYNC < 400Hz)
CN2 for LXMG1615-03-01,-02 (JST SM02(8.0)B-BHS-1-TB (LF)(SN) | Yeon Ho 20015WR-05A00, SM02B-BHSS-1-TB (LF)(SN) | Yeon
Ho 35001WR-02A00)
High Voltage Connection to High Side of Lamp. Connect to lamp terminal with shortest lead length.
DO NOT connect to Ground.
Connection to Low Side of Lamp. Connect to lamp terminal with longer lead length.
DO NOT connect to Ground.
CN2-1
CN2-2
VHI
VLO
CN2 for LXMG1615-03-03 (Honda QZ-19-A3MYL#02)
High Voltage Connection to High Side of Lamp. Connect to lamp terminal with shortest lead length.
DO NOT connect to Ground.
Connection to Lower Side of Lamp. Connect to lamp terminal with longer lead length.
DO NOT connect to Ground.
CN2-3
CN2-1
VHI
VLO
* LX9506G Mating Connector Assembly Available
PHYSICAL DIMENSIONS
94mm
3.70in
CN1
X
15mm
0.591in.
2.5mm
0.0984in.
CN2
12.5mm
0.492in
W
10mm
0.394in.
GROUNDED MOUNTING
HOLE 3.18MM ±0.08 DIA.
69mm ±0.2mm
2.71in.
1.0mm
4.6mm Max
0.181in.
0.0394in.
Warning
High Voltage Present at
high side of transformer
and Output Connector
PCB tolerances ± 0.5mm, M2 or 2-56 recommended mounting screws
Weight: (5.5g) typ.
R1.0
Copyright © 2000
Rev. 1.0, 2006-03-23
Microsemi
Page 3
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
RangeMAX™
LXMG1615-03-xx
®
3.6/5V 2W, DIGITAL DIMMING CCFL INVERTER MODULE
TM
PRODUCTION DATA SHEET
HOW THE RANGEMAX WORKS
LAMP VOLTAGE & LAMP CURRENT – BURST MODE OPERATION
Figure 1 – 50% Burst Duty Cycle
Figure 2 – 2% Burst Duty Cycle
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.
Figure 3 – 2% Burst Duty Cycle (Expanded Time Base)
HIGHLIGHTS
•
Integrated brightness control circuit includes a DC
voltage to pulse width converter that minimizes system
design work and system noise susceptibility. This
provides a familiar and convenient interface while
reducing the potential for externally induced noise, which
can cause lamp flicker.
High Voltage
Transformer
VHI
Comparator
VBRITE
+
Transformer
Driver
Ramp
-
•
RangeMAX inverter modules are designed to operate
with the burst frequency synchronized to the video frame
rate. This provides operation with no visible display
disturbances caused by beat frequencies between the
lamps and video frame rates. In this synchronous mode,
the inverter burst rate operates at twice the video refresh
rate, well beyond standard 50/60Hz video refresh rates
where the eye can perceive pulsing light.
.25 -
2.2VDC
Ramp Gen.
ISENSE VSENSE
VLO
Figure 4 – RangeMAX Simplified Block Diagram
•
In applications with no access to a vertical sync, an
onboard oscillator operates the inverter burst rate at about
500Hz. In this non-synchronous mode, minor display
disturbances can be found under certain video conditions.
This performance may be acceptable for many
applications, but synchronization must be used when no
disturbance can be tolerated.
Copyright © 2000
Rev. 1.0, 2006-03-23
Microsemi
Page 4
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
RangeMAX™
LXMG1615-03-xx
®
3.6/5V 2W, DIGITAL DIMMING CCFL INVERTER MODULE
TM
PRODUCTION DATA SHEET
HOW THE RANGEMAX WORKS (CONTINUED)
HIGHLIGHTS (CONTINUED)
•
Separate feedback loops for lamp current and open circuit
•
A single input will accommodate negative and positive
vertical sync pulses at any pulse width.
voltage regulation insure reliable strike under all operating
conditions, automatic over-voltage prevention with broken
or failed lamps, and accurate lamp current regulation.
TYPICAL APPLICATION
3.2V - 4.2V
or 5V
•
The Brightness control may be a voltage output DAC, or
other voltage source as shown in Figure 5. A 3.3V Logic
Level PWM signal from a micro-controller may also be
used as shown in Figure 5A.
If synchronization to the video frame rate is desired,
connect the vertical sync pulse from the system video
3.3VDC
+3.3V
VBATT
•
BRITE
VHI
controller to the VSYNC input.
If no video
CCFL
TUBE
LXMG1615-03-xx
synchronization is desired, connect VSYNC to ground.
If you need to turn the inverter ON/OFF remotely, use the
+3.3V Logic Supply pin.
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 high voltage insulation, connect the longest
wire to VLO. This wire is typically white.
•
•
VLO
SYNC
GND
VSYNC
Figure 5 - Brightness Control
PWM Signal
from System
BRITE
RangeMAX INVERTERS
P.W.
LXMG1615-03
Also available in higher power single lamp inverters
LXMG1612-xx-xx, Dual Output LXMG1621-01,
LXMG1622-xx-xx and Quad Output LXMG1641-01
versions for multiple lamp applications.
< 200µS
0 < P.W. < 100% of period
Figure 5A - PWM Brightness Control
LXMG1615-03-XX OUTPUT CURRENT ADJUST
The LXMG1615-03-xx output current can be adjusted
lower by changing the value of one resistor (R10) on the
PCB. The following table shows the new output current
values:
F1
D1
C13
C14
R1
R2
R3
R4
C4
CN1
C7
R6
4.0mArms
3.5mArms
3.0mArms
2.5mArms
2.0mArms
137K 1% (stock setting)
95.3K1%
68.1K1%
49.9K1%
36.5K1%
C15
C16
C17
R5
C9
U1
C8
C10
R8
R18
R19
R11
R10
Copyright © 2000
Rev. 1.0, 2006-03-23
Microsemi
Page 5
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
RangeMAX™
LXMG1615-03-xx
®
3.6/5V 2W, DIGITAL DIMMING CCFL 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 © 2000
Rev. 1.0, 2006-03-23
Microsemi
Integrated Products Division
Page 6
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
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