LXM1643-12-62 Quad CCFL Programmable Inverter Module RELIMIN

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LXM1643-12-62 Quad CCFL Programmable Inverter Module RELIMIN

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INTEGRATED
LXM1643-12-62
Quad CCFL Programmable Inverter Module
RELIMINARY ATASHEET
DESCRIPTION
FEATURES
Microsemi
LXM1643-12-62 Quad Output Direct DriveCCFL (Cold Cathode Fluorescent Lamp) Inverter Module specifically designed driving backlight lamps. ideal driving typical 12.1" 18.1" panels. LXM1643 modules provides designer with vastly superior display brightness range then typical with analog (amplitude control) dimming. inverter includes dimming input that permits brightness control from either voltage source signal external Potentiometer. maximum output current externally programmable over range steps allow inverter properly match wide array panel lamp current specifications. RangeMAX Digital Dimming Technique provides flicker-free brightness control wide range typically (50:1+) dimming application.
resultant "burst drive" that energizes lamp designed specifically ensure that premature lamp degradation occurs, while allowing significant power savings lower levels. modules convert voltage from system battery adapter directly high frequency, high-voltage waves required ignite operate CCFL lamps. LXM1643-12-62 inverter intended panel assemblies with individual lamp connections, where lamps spaced apart from each other. LXM1643-12-61 inverter should used panel applications where lamp pairs close proximity share common return (low side) wire. Other benefits this topology stable fixed-frequency operation, secondary-side strike-voltage regulation both open/shorted lamp protection with fault timeout.
PRODUCT HIGHLIGHT
Externally Programmable Maximum Output Current Easy Brightness Control RangeMAX Wide Range Dimming Output Short-Circuit Protection Automatic Strike-Voltage Regulation Timeout Fixed Frequency Operation Rated From 70°C 60950 E175910 APPLICATIONS High Brightness Displays Desktop Displays Industrial Display Controls BENEFITS Smooth, Flicker Free 2%100% Full-Range Brightness Control Programmable output current allows inverter mate with wide variety panel specifications
IMPORTANT: most current data, consult MICROSEMI's website: http://www.microsemi.com
Universal Dimming Input PWM, VDC, Potentiometer
Voltage Source
Potentiometer
Signal
LXM1643-12-62
Selectable Maximum Output Current 8mARMS
PACKAGE ORDER INFO
PART NUMBER LXM1643-12-62
OUTPUT CONNECTORS Four SM02B-BHSS-1-TB
INVERTER MATES DIRECTLY PANEL CONNECTORS BHSR-02VS-1
Copyright 2002 Rev. 0.5, 2003-01-20
Microsemi
Integrated Products 11861 Western Avenue, Garden Grove, 92841, 714-898-8121, Fax: 714-893-2570
Page
INTEGRATED
LXM1643-12-62
Quad CCFL Programmable Inverter Module
RELIMINARY ATASHEET
ABSOLUTE MAXIMUM RATINGS (NOTE Input Signal Voltage (VIN1).-0.3V Input Power Output Voltage, load Internally Limited 2000VRMS Output Current (each output) .9.5mARMS (Internally Limited) Output Power (each output) 6.0W Input Signal Voltage SLEEP Input) -0.3V VIN1 Input Signal Voltage (BRITE) .-0.3V 5.5V Ambient Operating Temperature, zero airflow.-20°C 70°C Storage Temperature Range.-40°C 85°C
Note Exceeding these ratings could cause damage device. voltages with respect Ground. Currents positive into, negative specified terminal.
Microsemi
RECOMMENDED OPERATING CONDITIONS (R.C.) This module been designed operate over wide range input output conditions. However, best efficiency performance will obtained module operated under condition listed `R.C.' column. Min. Max. columns indicate values beyond which inverter, although operational, will function optimally. Parameter 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 Symbol VIN1 VBRT_ADJ VLAMP IOLAMP Recommended Operating Conditions R.C. 10.8 10.2 13.2 13.8 6.0* Units VRMS mARMS
*Total output power must exceed Higher voltage lamps require maximum output current lower than 8mARMS
ELECTRICAL CHARACTERISTICS Unless otherwise specified, following specifications apply over recommended operating condition ambient temperature 25°C except where otherwise noted. Parameter
OUTPUT 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) Output Current Lamp Lamp Deviation Min. Average Lamp Current (each output) Lamp Start Voltage Operating Frequency Burst Frequency Copyright 2002 Rev. 0.5, 2003-01-20 IL(MAX) IL(MAX) IL(MAX) IL(MAX) ILL%DEV IL(MIN) fBURST VBRT_ADJ 2.0VDC, SLEEP 2.0V, VIN1 12VDC ISET1 Ground, ISET2 Ground VBRT_ADJ 2.0VDC, SLEEP 2.0V, VIN1 12VDC ISET1 Ground, ISET2 Open VBRT_ADJ 2.0VDC, SLEEP 2.0V, VIN1 12VDC ISET1 Open, ISET2 Ground VBRT_ADJ 2.0VDC, SLEEP 2.0V, VIN1 12VDC ISET1 Open, ISET2 Open VBRT_ADJ 2.0VDC, SLEEP 2.0V, VIN1 12VDC ISET1 Open, ISET2 Open VBRT_ADJ 0.5VDC, SLEEP 2.0V, VIN1 12VDC ISET1 ISET2 Ground -20°C 70°C, VIN1 10.8VDC VBRT_ADJ 2.5VDC, SLEEP 2.0V, VIN1 Output Burst Frequency 1500 1650 mARMS mARMS
Symbol
Test Conditions
LXM1643-12-62
Units
ELECTRICALS ELECTRICALS
mARMS mARMS mARMS VRMS Page
Microsemi
Integrated Products 11861 Western Avenue, Garden Grove, 92841, 714-898-8121, Fax: 714-893-2570
INTEGRATED
LXM1643-12-62
Quad CCFL Programmable Inverter Module
RELIMINARY ATASHEET
ELECTRICAL CHARACTERISTICS (CONTINUED) Unless otherwise specified, following specifications apply over recommended operating condition ambient temperature 25°C except where otherwise noted. Parameter
BRITE INPUT Input Current Minimum Input Max. Lamp Current Maximum Input Min. Lamp Current SLEEP INPUT Mode SLEEP Mode SET1,2 INPUT SET1,2 Threshold Input Current POWER CHARACTERISTICS Sleep Current Current Efficiency IIN(MIN) IRUN VIN1 12VDC, SLEEP 0.8V VIN1 12VDC, SLEEP 2.0V, ISET1 Open ISET2 Ground, VLAMP 625VRMS VIN1 12VDC, SLEEP 2.0V, ISET1 Open ISET2 Ground, VLAMP 625VRMS 1750 µADC mADC ISET VSET 0.4V -300 IBRT VBRT_ADJ VBRT_ADJ VBRT_ADJ 0VDC VBRT_ADJ 3VDC IO(LAMP) Maximum Lamp Current IO(LAMP) Minimum Lamp Current -300 2.05 µADC µADC
Microsemi
Symbol
Test Conditions
LXM1643-12-62
Units
VSLEEP VSLEEP
-0.3
VIN1
FUNCTIONAL DESCRIPTION CONN DESCRIPTION (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 CN1-7 CN1-8 CN1-9 CN1-10 CN1-11 CN1-12 VIN1 AGND Main Input Power Supply (10.8V VIN1 13.2V) Power Supply Return Analog Signal Ground Connect ON/OFF Control. SLEEP OFF, SLEEP 2.0V Brightness Control (0.5V 2.0VDC). 2.0VDC gives maximum lamp current. SET1 Connecting this ground decreases output current (see Table
SLEEP
BRITE SET1 SET2
ELECTRICALS ELECTRICALS
SET2 Connecting this ground decreases output current (see Table High voltage connection high Side lamp. Connect lamp terminal with shortest lead length. connect Ground. Connection side lamp. Connect lamp terminal with longer lead length. connect Ground
CN2-CN5 (JST SM02B-BHSS-1-TB) CN2-CN5-1 CN2-CN5-2 VHI1
Copyright 2002 Rev. 0.5, 2003-01-20
Microsemi
Integrated Products 11861 Western Avenue, Garden Grove, 92841, 714-898-8121, Fax: 714-893-2570
Page
INTEGRATED
LXM1643-12-62
Quad CCFL Programmable Inverter Module
RELIMINARY ATASHEET
TABLE OUTPUT CURRENT SETTINGS SET1 (Pin Open* Open* Ground Ground SET2 (Pin Open* Ground Open* Ground Nominal Output Current 8.0mA 7.0mA 6.0mA 5.0mA PHYSICAL DIMENSIONS LXM1643-12-62
7.40in 0.23in
Microsemi
driven logic signal should open collector open drain only, voltage source.
7.16in 0.15in
182mm
188mm
SM02B-BHSS-1-TB (JST)
CN-1
1.41in.
36mm
0.15in
3.70in
94mm
0.15in
GROUNDED MOUNTING HOLES 3.18MM ±.08 DIA.
Warning
High Voltage Present high side Transformer Output Connector
0.18in.
4.7mm
0.30in.
7.7mm
0in.
1.7mm
tolerances 0.5mm
Weight: (XXg) typ.
SIMPLIFIED BLOCK DIAGRAM
High Voltage Transformers Controller Comparator Ramp
BRIT
LAMP
Output Driver
PACKAGE DATA PACKAGE DATA
SENSE
SENSE
Copyright 2002 Rev. 0.5, 2003-01-20
Microsemi
Integrated Products 11861 Western Avenue, Garden Grove, 92841, 714-898-8121, Fax: 714-893-2570
LAMP
SENSE
Page
INTEGRATED
LXM1643-12-62
Quad CCFL Programmable Inverter Module
RELIMINARY ATASHEET
TYPICAL APPLICATION
Microsemi
0.45V 2.0V 1.8K BRITE
LXM1643-12-62
SLEEP
brightness control voltage output other voltage source, digital manual pot. inverter contains internal pull-up bias 1.8K resistor lower threshold voltage. 3.3V Logic Level signal from micro-controller also used shown Figure need turn inverter ON/OFF remotely, connect logic signal SLEEP input. Connect high voltage wire from lamp. Connect voltage wire (wire with thinner insulation). Never connect circuit ground this will defeat lamp current regulation. both lamp wires have heavy high voltage insulation, connect longest wire VLO. This wire typically white. SET1 SET2 (see Figure inputs select desired maximum output current. Using these pins combination allows inverter match wide variety panels from different manufactures. Generally best lamp lifetime correlates with driving CCFL manufactures nominal current setting. However SET1 SET2 inputs allow user flexibility adjust current maximum allowable output current increase panel brightness expense some reduced lamp life. Although pins designed such that just leaving them open grounding them that needed output current, they also actively set. Using open collector open drain logic signal will allow reduce lamp current situations where greater range required, example nighttime situations. conjunction with light sensor other timer panel could higher brightness (maximum output current) daytime illumination lower brightness (minimum typical output current) nighttime. Since ratio factor both burst duty cycle peak output current, using this technique effective ratio increased greater than burst duty cycle alone. Conversely inputs could used overdrive lamp temporarily facilitate faster lamp warm initial lamp turn course possible degradation lamp life from such practices users responsibility since lamps designed overdriven. inverter built fault timeout function. output return open (lamp disconnected broken) shorted inverter will attempt strike lamp several seconds. After about second without success inverter will shutdown. order restart inverter necessary toggle sleep input cycle VIN1 input supply. timeout shutdown mode input drain current will about 8mA.
Figure Brightness Control (Output current maximum)
Signal from System
BRITE
LXM1643-12-62 10us 125uS
P.W. 100% period
Figure Brightness Control
BRITE
LXM1643-12-62
SLEEP
APPLICATION APPLICATION
5.0mARMS 6.0mARMS 7.0mARMS 8.0mARMS L=GND; H=Open Figure Output Current (SET1 SET2 Inputs)
Copyright 2002 Rev. 0.5, 2003-01-20
Microsemi
Integrated Products 11861 Western Avenue, Garden Grove, 92841, 714-898-8121, Fax: 714-893-2570
Page
INTEGRATED
LXM1643-12-62
Quad CCFL Programmable Inverter Module
RELIMINARY ATASHEET
NOTES
Microsemi
NOTES NOTES
Preliminary Data Information contained this document pre-production data proprietary Microsemi. modified without express written consent Microsemi. Product referred herein offered sample form only Microsemi reserves right change discontinue this proposed product time.
Copyright 2002 Rev. 0.5, 2003-01-20
Microsemi
Integrated Products 11861 Western Avenue, Garden Grove, 92841, 714-898-8121, Fax: 714-893-2570
Page

LXM1643-12-62 Quad CCFL Programmable Inverter Module RELIMIN

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