LXMG1645-24-53

RangeMax™ StayLIT™ TM ® LXMG1645-24-53 24V Quad 5W CCFL Inverter Module P RODUCTION D ATA S HEET DESCRIPTION KEY FEATURES W WW . 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 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 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 HI Lamp Fault Signal CN1 HI CN5 MICROSEMI HI 1 2 4 3 CN2 4 2 3 1 2 CN3 CN4 3 4 PART NUMBER LXMG1645-24-53 Copyright © 2010 Rev. 1.0, 2010-10-13 1 2 3 4 1 LXMG1645-24-53 PWM DIMMING INPUT PACKAGE ORDER INFO HI OUTPUT CONNECTORS Four JST SM02(8.0)B-BHS-1-TB(LF)(SN) or Yeon Ho 20015WR-05A00 INVERTER MATES DIRECTLY TO PANEL CONNECTORS JST BHR-03VS-1 Microsemi Analog Mixed Signal Group 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 1 RangeMax™ StayLIT™ TM ® LXMG1645-24-53 24V Quad 5W CCFL Inverter Module P RODUCTION D ATA S HEET ABSOLUTE MAXIMUM RATINGS W WW . Microsemi . C OM 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 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 Symbol VIN PO VBRT FDUTY FPWM VPWM Tr, Tf IOLAMP VLAMP Recommended Operating Conditions Min R.C. Max 21.6 0 10 100 3.0 0 5.5 530 24 4.0 26.4 5.0 3.0 100 225 5.5 3 6.5 720 Units V 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 OUTPUT CHARACTERISTICS Full Bright Lamp Current (Each Lamp) Full Dim Lamp Current (Each Lamp) Lamp Run Voltage (Each Lamp) Lamp Start Voltage (Each Lamp) Operating Frequency Optical Dim Range (by PWM) 4 Symbol IOL100n3 IOL100n VL_RUN VLS FO N:1_BRTP ΔIOLm,n Test Conditions / Comment PWM = 100% or Open VB = 3V, PWM=10% PWM = 100% or Open TA = -30°C, VIN ≥ 21.6V Min 5.5 Typ 6.0 1.6 670 1820 Max 6.5 Units LXMG1645-24-53 mARMS mARMS VRMS VRMS 45.5 Center Area Brightness, Max/Min 47.5 50 48.0 kHz Ratio % Output Current Lamp to Lamp Deviation Copyright © 2010 Rev. 1.0, 2010-10-13 I OL m − I OL n m=1,2,3,4, n= 1~4 not m I OL m 5 Microsemi Analog Mixed Signal Group 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 2 RangeMax™ StayLIT™ TM ® LXMG1645-24-53 24V Quad 5W CCFL Inverter Module P RODUCTION D ATA S HEET ELECTRICAL CHARACTERISTICS W WW . 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 PWM INPUT, PWM DIM CONTROL Symbol VPWMH VPWML Jitter FPWM FDUTY VEN_OFF VEN_ON VEN_ON I_Q TPWR_ON IRUN VIN UVLO VHYS IFLT η TS_DWELL VSTK VFLT_N IFLT_LKG VFLT_F TSTRIKE TD_FAIL Test Conditions / Comment Min 3 Typ Max Units V PWM High Level Amplitude PWM Low Level Amplitude PWM Jitter PWM Frequency Range PWM Duty Range ENABLE INPUT Disable Off ENABLE On ENABLE On VIN Quiescent Current Power On Sequence VIN to ENABLE POWER CHARACTERISITICS Supply Current VIN Under Voltage Lock Out Threshold VIN UVLO Hysteresis Supply Current During Fault Timeout Efficiency STRIKE TIMEOUT Strike (All Open Lamps) Open Lamp Output Voltage FAIL FAIL Pin Voltage FAIL Pin Leakage Current FAIL Pin Voltage FAIL Invalid Time FAIL Sensing Time STRIKE MODE StayLIT™ Strike Time Period LAMP CURRENT 0.3 3 100 10 0 2.5 TA = -30°C V µs Hz % V V V µA msec 120 225 100 0.5 5.5 5.5 2.8 260 1 710 20 0.7 ENABLE= 0V VIN = 24V +/- 10% before ENABLE Goes High 400 No Lamp Fault VIN Rising Edge All 4 Lamps Open 853 mA V V mA 30 85 90 1200 Load = 110k Resistive Load % msec VRMS V All Lamps Not Connected No Fault , Pull-up 2.4kΩ to VIN No Fault , Pull-up 2.4kΩ to VIN Open Lamp , Pull-up 2.4kΩ to VIN All 4 Lamps Open From Occurrence of One Lamp Open or Short Only One of Two Lamps Ignited on CN2~CN3 or CN4 ~ CN5 1650 VIN 10 0.4 2.5 275 600 µA V sec msec TSL_TO msec LXMG1645-24-53 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 1, CN2 2, CN3 3, CN4 4 4 At room temp, 1 hour full brightness operation and 1 hour full dim operation measurement ratio. 6.2 1.65 6.7 mARMS mARMS 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 3 RangeMax™ StayLIT™ TM ® LXMG1645-24-53 24V Quad 5W CCFL Inverter Module P RODUCTION D ATA S HEET W WW . Microsemi . C OM FUNCTIONAL PIN DESCRIPTION CONN PIN DESCRIPTION CN1 (Wurth Electronik 690367291076 or equivalent) CN1-1 CN1-3 CN1-5 CN1-2 CN1-4 CN1-6 CN1-7 CN1-8 CN1-9 CN1-10 NC ENABLE PWM FAIL NC ON/OFF Control, ON: 2.5V ~ 5.5V, OFF: 0 ~ 0.5V or Open Low Frequency Burst PWM Dimming input Fail Status Output: Normal State: Open Drain Output, Fail State ‘0V’ GND Power Supply Return VIN Main Input Power Supply 21.6V ~ 26.4V 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 CN2-3, CN3-3 CN4-3, CN5-3 LAMPHI 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 LAMPLO 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 STAYLIT FUNCTION TABLE 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. W WW . Microsemi . C OM means either O , S 1 , S 2 , O R S 3 Inverter Operation Lamp 4 N F N F N F N F N F N F N F N F ALL OFF Fault Exists Prior to Turn-on Action After TSTRIKE FAIL SIGNAL Fault Occurs During Ignition Action After TSTRIKE N = Connected lamp and normal operation Fault Conditions Lamp 1 N N N N N N N N F F F F F F F F Lamp 2 N N N N F F F F N N N N F F F F Lamp 3 N N F F N N F F N N F F N N F F ALL ON 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. An S1 Fault Will Typically Reduce Opposing Operational Lamp Current By 43% Open Drain to LOW Open Drain to LOW Open Drain to LOW VIN ENABLE FAIL LXMG1645-24-53 TSTRIKE TPWR_ON TD_FLT FAIL OCCUR 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 5 RangeMax™ StayLIT™ TM ® LXMG1645-24-53 24V Quad 5W CCFL Inverter Module P RODUCTION D ATA S HEET MECHANICAL DIMENSIONS W WW . Microsemi . C OM 200mm ±0.5 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 CN3 CN4 MOUNTING HOLE 3.06MM ±.08 DIA. X1 5.00 50mm ±0.5 CN2 1.969in. CN5 190mm 7.480 in. MICROSEMI 5.00 1.6mm ± 0.1 11.8mm Max 0.465in. weight: 65g typ. 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 0.063 in. 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 NOTES W WW . Microsemi . C OM 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