RangeMax™ StayLIT™ ® TM LXMG1645-24-53 24V Quad 5W CCFL Inverter Module P RODUCTION D ATA S HEET KEY FEATURES DESCRIPTION significant power savings at lower dim levels. The inverter also has a dedicated FAIL pin that indicates an open/shorted lamp condition. In addition when only one or two lamps on either side sustain a fault the lamps on the other side will remain in normal operation. This mode of operation during lamp(s) failure is called StayLit™ since the panel is able to still remain on although at reduced brightness. The module’s design is based on Microsemi’s LX6512 backlight controller, which provides a number of cost and performance advantages due to the controller’s high level of integration. Other benefits of this new topology are stable fixed-frequency operation and secondary-side strike-voltage regulation. StayLIT™ Redundancy PWM Brightness Control RangeMAX™ Wide Range Dimming Output Short-Circuit Protection and Automatic Strike-Voltage Regulation Fixed Frequency Operation Rated From -30 to 80°C UL 60950 Pending RoHS Compliant WWW . Microsemi .C OM The LXMG1645-24-53 is a Quad 5W Output CCFL (Cold Cathode Fluorescent Lamp) Inverter Module specifically designed for driving NEC NL12876BC2625 LCD panel or similar quad lamp panels. The inverter includes a dimming input that permits brightness control from a PWM signal. RangeMAX™ Digital Dimming Technique provides flicker-free brightness control in any wide range (typically 50:1+) dimming application. The module converts a DC voltage from the system battery or AC adapter directly to high frequency, high-voltage waves required to ignite and operate CCFL lamps. The resultant “burst drive” that energizes the lamp was designed specifically to ensure that no premature lamp degradation occurs, while allowing APPLICATIONS High Brightness Displays Desktop Displays Medical Monitors BENEFITS Smooth, Flicker Free 2%100% Optical Brightness Range 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 Lamp Fault Signal HI HI CN1 4 W 2 3 1 CN4 3 2 CN3 4 1 W W 4 1 3 2 CN2 2 3 CN5 1 4 W HI PWM DIMMING INPUT HI PACKAGE ORDER INFO PART NUMBER OUTPUT CONNECTORS INVERTER MATES DIRECTLY TO PANEL CONNECTORS LXMG1645-24-53 Four JST SM02(8.0)B-BHS-1-TB(LF)(SN) or Yeon Ho 20015WR-05A00 JST BHR-03VS-1 Copyright © 2010 Rev. 1.0, 2010-10-13 Microsemi Analog Mixed Signal Group 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 1 LXMG1645-24-53 MICROSEMI RangeMax™ StayLIT™ ® TM LXMG1645-24-53 24V Quad 5W CCFL Inverter Module P RODUCTION D ATA S HEET WWW . Microsemi .C OM ABSOLUTE MAXIMUM RATINGS Input Signal Voltage (VIN, FAIL ) ............................................................................................................................-0.3V to 30V Input Power ....................................................................................................................................................................... 24W Output Voltage, no load ............................................................................................................................................. 1900VRMS Output Current(each output) ........................................................................................................................................... 9.0mA Output Power(each output) ................................................................................................................................................. 5W Input Signal Voltage (ENABLE, PWM) .................................................................................................................-0.3V to 5.5V Ambient Operating Temperature, zero airflow .................................................................................................... -30°C to 80°C Operating Relative Humidity, Non-condensing ........................................................................................................ 0% to 95% Storage Temperature Range .............................................................................................................................. -40°C to 90°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. Parameter Symbol Input Supply Voltage Range (Fully Regulated Lamp Current) Output Power (each output) DC BRITE Control Input Voltage Range Duty Control Range 1 Burst Frequency Direct Low Frequency PWM Amplitude Rise/Fall Time 2 Lamp Current (Full Brightness) Lamp Operating Voltage Recommended Operating Conditions Min R.C. Max VIN 21.6 PO VBRT FDUTY FPWM VPWM Tr, Tf IOLAMP VLAMP 0 10 100 3.0 0 5.5 530 Units 24 26.4 V 4.0 5.0 3.0 100 225 5.5 3 6.5 720 W V % Hz V µS mARMS VRMS 120 6.0 625 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; ENABLE > 2.5V, VIN = 24V, FDUTY=100%, FPWM = 120Hz, Ta = 25°C. Parameter Symbol Test Conditions / Comment Min Max Units 6.0 6.5 mARMS LXMG1645-24-53 Typ OUTPUT CHARACTERISTICS Full Bright Lamp Current (Each Lamp) IOL100n3 PWM = 100% or Open Full Dim Lamp Current (Each Lamp) IOL100n VB = 3V, PWM=10% 1.6 mARMS Lamp Run Voltage (Each Lamp) VL_RUN PWM = 100% or Open 670 VRMS Lamp Start Voltage (Each Lamp) VLS Operating Frequency FO Optical Dim Range (by PWM) 4 Output Current Lamp to Lamp Deviation Copyright © 2010 Rev. 1.0, 2010-10-13 N:1_BRTP ΔIOLm,n 5.5 1820 TA = -30°C, VIN ≥ 21.6V 45.5 Center Area Brightness, Max/Min I OL m − I OL n m=1,2,3,4, n= 1~4 not m I OL m Microsemi Analog Mixed Signal Group 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 47.5 VRMS 48.0 kHz 50 Ratio 5 % Page 2 RangeMax™ StayLIT™ ® TM LXMG1645-24-53 24V Quad 5W CCFL Inverter Module P RODUCTION D ATA S HEET ELECTRICAL CHARACTERISTICS WWW . Microsemi .C OM 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; ENABLE > 2.5V, VIN = 24V, FDUTY=100%, FPWM = 120Hz, Ta = 25°C. Parameter Symbol Test Conditions / Comment Min Typ Max Units PWM INPUT, PWM DIM CONTROL PWM High Level Amplitude VPWMH PWM Low Level Amplitude VPWML PWM Jitter Jitter PWM Frequency Range FPWM 100 PWM Duty Range FDUTY Disable Off VEN_OFF ENABLE On VEN_ON ENABLE On VEN_ON 3 V 0.3 V 3 µs 225 Hz 10 100 % 0 0.5 V 2.5 5.5 V 2.8 5.5 V 400 µA 120 ENABLE INPUT VIN Quiescent Current I_Q Power On Sequence VIN to ENABLE TPWR_ON TA = -30°C ENABLE= 0V VIN = 24V +/- 10% before ENABLE Goes High 260 1 msec POWER CHARACTERISITICS Supply Current VIN Under Voltage Lock Out Threshold IRUN No Lamp Fault 710 VIN UVLO VIN Rising Edge 20 V 0.7 V VIN UVLO Hysteresis VHYS Supply Current During Fault Timeout IFLT η Efficiency mA 30 mA 90 % 1200 msec 1650 VRMS VIN V All 4 Lamps Open Load = 110k Resistive Load 853 85 STRIKE TIMEOUT Strike (All Open Lamps) TS_DWELL Open Lamp Output Voltage VSTK All Lamps Not Connected FAIL FAIL Pin Voltage VFLT_N FAIL Pin Leakage Current IFLT_LKG No Fault , Pull-up 2.4kΩ to VIN 10 µA FAIL Pin Voltage VFLT_F Open Lamp , Pull-up 2.4kΩ to VIN 0.4 V FAIL Invalid Time TSTRIKE All 4 Lamps Open 2.5 sec FAIL Sensing Time TD_FAIL From Occurrence of One Lamp Open or Short 275 msec No Fault , Pull-up 2.4kΩ to VIN STRIKE MODE StayLIT™ Strike Time Period TSL_TO Only One of Two Lamps Ignited on CN2~CN3 or CN4 ~ CN5 600 msec LXMG1645-24-53 LAMP CURRENT Lamp Current Of Non-Faulty Side Open or Short One Lamp, Full Bright IL_FN 5.7 ( Open or Short) Lamp Current Of Non-Faulty Side Open or Short One Lamp, Full Dim IL_FN ( Short or Short) 1 Direct PWM (low) frequency should be selected such to not have optical interference. 2 Lamp current is specified with NEC NL12876BC26-25 and all 4 lamps connected with frame of panel grounded. 3 n is lamp number CN1 Æ 1, CN2Æ 2, CN3 Æ 3, CN4 Æ 4 4 At room temp, 1 hour full brightness operation and 1 hour full dim operation measurement ratio. Copyright © 2010 Rev. 1.0, 2010-10-13 Microsemi Analog Mixed Signal Group 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 6.2 1.65 6.7 mARMS mARMS Page 3 RangeMax™ StayLIT™ ® TM LXMG1645-24-53 24V Quad 5W CCFL Inverter Module P RODUCTION D ATA S HEET WWW . Microsemi .C OM FUNCTIONAL PIN DESCRIPTION CONN PIN DESCRIPTION CN1 (Wurth Electronik 690367291076 or equivalent) CN1-1 CN1-3 VIN Main Input Power Supply 21.6V ~ 26.4V CN1-5 CN1-2 CN1-4 GND Power Supply Return CN1-6 CN1-7 NC NC CN1-8 ENABLE CN1-9 PWM Low Frequency Burst PWM Dimming input CN1-10 FAIL Fail Status Output: Normal State: Open Drain Output, Fail State ‘0V’ ON/OFF Control, ON: 2.5V ~ 5.5V, OFF: 0 ~ 0.5V or Open CN2, CN3, CN4, CN5 (JST SM02(8.0)B-BHS-1-TB(LF)(SN) | Yeon Ho 20015WR-05A00 or equivalent) CN2-1, CN3-1 CN4-1, CN5-1 LAMPHI High voltage connection to high side of lamp. Connect to lamp terminal with shortest lead length. DO NOT connect to ground. CN2-3, CN3-3 CN4-3, CN5-3 LAMPLO Connection to Low Side of Lamp. Connect to Lamp Terminal with Longer Lead Length. DO NOT connect to ground LXMG1645-24-53 Copyright © 2010 Rev. 1.0, 2010-10-13 Microsemi Analog Mixed Signal Group 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 4 RangeMax™ StayLIT™ ® TM LXMG1645-24-53 24V Quad 5W CCFL Inverter Module P RODUCTION D ATA S HEET FAULT Definition: (F) 1. 2. 3. 4. 5. OPEN:(O) SHORT1:(S1) SHORT2:(S2) SHORT3:(S3) ARCING: F Lamp is not connected ( either high side wire open or return wire open) Lamp high side wire is shorted to lamp return side wire Lamp high side wire is shorted to ground Lamp return wire is shorted to GND Lamp High side wire is creating the arcing path after the inverter is enabled. means either O , S 1 , S 2 , O R S 3 N = Connected lamp and normal operation Fault Conditions Inverter Operation Lamp 1 N N Lamp 2 N N Lamp 3 N N Lamp 4 N F N N F N N N F F N F N N N F N F N F F N N F F F F N N N F N N F F N F N F N F F F F N N F F N F F F F N F F F F ALL ON Fault Exists Prior to Turn-on Action After TSTRIKE FAIL SIGNAL Fault Occurs During Ignition Action After TSTRIKE Fault Occurs During Run Mode Action After TD_FLT With Exception of Affected Lamps for ‘O, S1, S2’ Fault Conditions, All Unaffected Lamps Are ON, Including Affected Lamp in a Single S3 Fault Condition. Open Drain to LOW Open Drain to LOW Open Drain to LOW WWW . Microsemi .C OM STAYLIT FUNCTION TABLE An S1 Fault Will Typically Reduce Opposing Operational Lamp Current By 43% ALL OFF VIN ENABLE FAIL TPWR_ON Copyright © 2010 Rev. 1.0, 2010-10-13 LXMG1645-24-53 TSTRIKE TD_FLT FAIL OCCUR Microsemi Analog Mixed Signal Group 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 5 RangeMax™ StayLIT™ ® TM LXMG1645-24-53 24V Quad 5W CCFL Inverter Module P RODUCTION D ATA S HEET MECHANICAL DIMENSIONS 7.874 in. 185mm 10.00 5.00 GROUNDED MOUNTING HOLE 3.06MM ±.08 DIA. 6MM HEAD CLEARANCE 4 HOLES 7.283 in. 77.5mm 3.051 in. 5.00 CN1 CN4 CN3 MOUNTING HOLE 3.06MM ±.08 DIA. X1 50mm ±0.5 CN2 1.969in. CN5 MICROSEMI 5.00 190mm 7.480 in. 1.6mm ± 0.1 11.8mm Max 5.00 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 WWW . Microsemi .C OM 200mm ±0.5 0.063 in. 0.465in. weight: 65g typ. PCB tolerances ± 0.2mm, unless otherwise noted , 4-40 recommended mounting screws LXMG1645-24-53 Copyright © 2010 Rev. 1.0, 2010-10-13 Microsemi Analog Mixed Signal Group 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 6 RangeMax™ StayLIT™ TM ® LXMG1645-24-53 24V Quad 5W CCFL Inverter Module P RODUCTION D ATA S HEET WWW . Microsemi .C OM NOTES LXMG1645-24-53 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 © 2010 Rev. 1.0, 2010-10-13 Microsemi Analog Mixed Signal Group 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 7