DATA SHEET INVERTER for LCD MODULE 104PW161 DC In/AC Out, Externally Communicated System 104PW161 inverter for LCD (Liquid crystal display) modules is composed of a DC/AC inversion circuit, a luminance control circuit and a boosting transformer. The DC/AC inversion circuit inverts a direct current (DC) power supply into an altar current (AC) by the center-tap transmitter circuit that used transistors. The luminance control circuit can control the luminance of cold cathode lamps for LCD backlight unit. The boosting transformer is translated the low AC voltage that obtained from a DC/AC inversion circuit to the high AC voltage. Also the high AC voltage is outputted from a secondary side of the boosting transformer. APPLICATIONS * High AC voltage generator of cold cathode fluorescent lamp for LCD FEATURES * Pulse width modulation circuit * Alert circuit for malfunction The information in this document is subject to change without notice. Before using this document, please confirm that this is the latest version. Not all devices/types available in every country. Please check with local NEC representative for availability and additional information. Document No. EN0542EJ1V0DS00 (1st edition) Date Published December 2001 N CP(N) Printed in Japan (c) 2001 104PW161 CONTENTS 1. GENERAL SPECIFICATIONS.............................................................................................................. 3 2. DETAILED SPECIFICATIONS............................................................................................................. 4 2.1 MECHANICAL SPECIFICATIONS ................................................................................................... 4 2.2 ABSOLUTE MAXIMUM RATINGS.................................................................................................. 4 2.3 ELECTRICAL CHARACTERISTICS ................................................................................................ 5 2.3.1 Driving for inverter ..................................................................................................................... 5 2.3.2 Fuses............................................................................................................................................ 5 2.4 CONNECTIONS AND FUNCTIONS FOR INTERFACE PINS........................................................ 6 2.4.1 Detail of interface pins ................................................................................................................ 6 2.4.2 Positions of sockets ..................................................................................................................... 6 2.5 LUMINANCE CONTROLS................................................................................................................ 7 3. RELIABILITY TESTS............................................................................................................................ 8 4. PRECAUTIONS....................................................................................................................................... 9 4.1 MEANING OF CAUTION SIGNS ..................................................................................................... 9 4.2 CAUTIONS.......................................................................................................................................... 9 4.3 ATTENTIONS ..................................................................................................................................... 9 4.3.1 Handling of the product............................................................................................................... 9 4.3.2 Environment ................................................................................................................................ 9 4.3.3 Other............................................................................................................................................ 9 5. OUTLINE DRAWINGS......................................................................................................................... 10 5.1 FRONT VIEW ................................................................................................................................... 10 5.2 SIDE VIEW ....................................................................................................................................... 10 5.3 REAR VIEW...................................................................................................................................... 10 2 Data Sheet EN0542EJ1V0DS 104PW161 1. GENERAL SPECIFICATIONS Driving system Externally commutated system Luminance control system Pulse width modulation Input voltage for power supply 12.0 V (typ.) Output voltage At steady state 600 Vrms (typ.) At open (e.g. Start-working of lamp) 1,250 Vrms (typ.) Combined load Resistance 100 k (typ.) Stray capacity 5 pF (typ.) Oscillation frequency 55 kHz (typ.) Board size 105.0 (W) x 26.5 (H) x 9.5 (D) mm (typ.) Weight 20.0 g (typ.) Adaptable product LCD module NL6448BC33-46 Lamp holder unit 104LHS35 Data Sheet EN0542EJ1V0DS 3 104PW161 2. DETAILED SPECIFICATIONS 2.1 MECHANICAL SPECIFICATIONS Parameter Specification Unit 105.0 0.5 (W) x 26.5 0.5 (H) x 9.5 0.5 (D) Board size Weight Note1 mm 20.0 (typ.), 23.0 (max.) g Note1: See "5.OUTLINE DRAWINGS". 2.2 ABSOLUTE MAXIMUM RATINGS Parameter Symbol Rating Unit Resistance RL 105 k Stray capacity CL 5 pF Power supply for inverter VDDB 0 to +14.0 V BRTI signal VBI 0 to +16.0 V BRTC signal VBC -1.0 to VDDB+1.0 V Tst -30 to +85 C Front surface TopF -10 to +70 C Rear surface TopR -10 to +70 C 95 % Ta 40C 85 % 40 < Ta 50C 70 % 50 < Ta 55C 60 % 55 < Ta 60C 50 % 60 < Ta 65C 42 % 65 < Ta 70C 78 Note2 g/m3 Ta > 70C Combined load Input voltage Storage temperature Operating temperature Relative humidity Note1 Absolute humidity Note1 RH - Note1: No condensation Note2: Ta = 70C, RH = 42% 4 Data Sheet EN0542EJ1V0DS Remarks Ta = 25C - 104PW161 2.3 ELECTRICAL CHARACTERISTICS 2.3.1 Driving for inverter (Ta = 25C) Parameter Symbol Min. Typ. Max. Unit Resistance RL 95 100 105 k Stray capacity CL - 5 - pF 10.8 12.0 13.2 V VBI 0 - 2.5 V Low VBCL 0 - 0.4 V at inverter power OFF High VBCH 2.5 - VDDB V at inverter power ON Power supply for inverter IDDB - 550 750 m Power supply for LCD lamp VS 1,200 1,250 1,500 Vrms Low VBA 0 - 0.5 V at normal High VBA 4.5 5.0 5.5 V at malfunction IBL 4.5 5.0 5.5 mArms Oscillation frequency FO 50 55 60 kHz Luminance control frequency for LCD lamp FL 220 250 280 Hz Combined load Power supply for inverter VDDB Input voltage BRTI signal BRTC signal Input current Output voltage Remarks - at maximum luminance, VDDB = 12.0V Note1 Starting voltage for lamp, RL = , CL = AM signal Output current LCD lamp - Note1: The power supply lines (VDDB and GNDB) occurs large ripple voltage while luminance control of LCD lamps. There is the possibility that the ripple voltage produces acoustic noise and signal wave noise in audio circuit and so on. Put a capacitor (5,000 to 6,000F) between the power source lines (VDDB and GNDB) to reduce the noise, if the noise occurred in the circuit. 2.3.2 Fuses Fusing line VDDB Fuse Type Supplier CCP2E15H Rating Unit Remark 1.5 A Fusing current Note1 72 V - KOA Corporation Note1: The power capacity should be more than the fusing current rating. If the power capacity is less than the criteria value, the fuse may not blow, and then nasty smell, smoking and so on may occur. Data Sheet EN0542EJ1V0DS 5 104PW161 2.4 CONNECTIONS AND FUNCTIONS FOR INTERFACE PINS 2.4.1 Detail of interface pins CN1 socket: 53261-0890 (MOLEX Inc.) Adaptable plug: 51021-0800 (MOLEX Inc.) Pin No. Symbol 1 2 3 4 5 6 7 8 VDDB VDDB GNDB GNDB BRTC BRTI GNDB AM Function Remarks Power supply Power supply Ground Ground Inverter ON/OFF signal ON: High or Open, OFF: Low Input of luminance control by resistor / voltage control method Note1 Ground Alert for malfunction signal 5.0V output at malfunction Note1: See "2.5 LUMINANCE CONTROLS". CN1: Figure of socket 1 2 7 8 CN2 socket: SM03 (4.0) B-BHS-TB (J.S.T. Mfg Co., Ltd.) Adaptable plug: BHR-03VS-1 (J.S.T. Mfg Co., Ltd.) Pin No. Symbol Signal Remarks 1 2 3 VBLC VBLH VBLH Low voltage (Cold) High voltage (Hot) High voltage (Hot) - CN2: Figure of socket 1 2 3 2.4.2 Positions of sockets Coil CN2 CN1 Insert direction 1 1 Insert direction Protect cover for transformer 6 Data Sheet EN0542EJ1V0DS 104PW161 2.5 LUMINANCE CONTROLS Luminance control functions are used when control the luminance of LCD lamps. Method Adjustment and luminance ratio * Adjustment The variable resistor (R) for luminance control should be 50k 5%, B curve, 1/10W. Minimum point of the resistor is the minimum luminance. Also maximum point of the resistor is the maximum luminance. GNDB Resistor control BRTI R * Luminance ratio Note1 Resistance Luminance ratio 0k 100% (Maximum) 50k 10% (Minimum) * Adjustment This control method can carry out continuation adjustment of luminance, if it is adjusted within the rated voltage for BRTI signal (VBI). Voltage control * Luminance ratio Note1 BRTI voltage (VBI) Luminance ratio 0V 100% (Maximum) 2.5V 10% (Minimum) Note1: These data are the target values. Data Sheet EN0542EJ1V0DS 7 104PW161 3. RELIABILITY TESTS Test item High temperature and humidity (Operation) Judgment 60 2C, RH = 60% 500hours High temperature (Operation) 70 3C 500hours High temperature (Non operation) 85 3C 500hours Low temperature (Operation) -10 3C 500hours Low temperature (Non operation) -30 3C 500hours Thermal shock (Operation) -20 3C...30minutes 60 3C...30minutes 100cycles, 1hour/cycle Vibration (Non operation) 10 to 55Hz, Amplitude 0.75mm 58 to 500Hz, 9.8m/s2 11 minute/cycle X, Y, Z direction 60 minutes each directions Mechanical shock (Non operation) 8 Condition 980m/ s2, 11ms X, Y, Z direction 1 time each directions Data Sheet EN0542EJ1V0DS No physical damage No electrical damage 104PW161 4. PRECAUTIONS 4.1 MEANING OF CAUTION SIGNS The following caution signs have very important meaning. Be sure to read "4.2 CAUTIONS", after understanding this contents! This sign has the meaning that customer will get an electrical shock, if customer has wrong operations. This sign has the meaning that customer will be injured by himself, if customer has wrong operations. 4.2 CAUTIONS Do not touch HIGH VOLTAGE PART of the inverter while turned on! Danger of an electrical shock. Pay attention to burn injury for the working inverter! It may be over 25C from ambient temperature. Do not shock the inverter! Danger of breaking, because they are composed of sensitive parts. (Shock: To be not greater 980m/s2 and to be not greater 11ms) 4.3 ATTENTIONS 4.3.1 Handling of the product Take hold of both ends without touch the mounting parts when customer pulls out products from inner packing box. If customer touches it, products may be broken down or out of adjustment, because of stress to mounting parts. If customer puts down the product temporarily, the product puts on flat subsoil as a non-mounting parts side turns down. Take the measures of electrostatic discharge such as earth band, ionic shower and so on, when customer deals with the product, because products may be damaged by electrostatic. Do not push-pull the interface connectors while the product is working, because wrong power sequence may break down the product. 4.3.2 Environment Do not operate in dewdrop atmosphere and corrosive gases. Do not operate or store in high temperature or high humidity atmosphere. Keep the product in antistatic pouch in room temperature, because of avoidance for dusts and sunlight, if customer stores the product. Do not operate in high magnetic field. Circuit boards may be broken down by it. 4.3.3 Other All GNDB and VDDB terminals should be used without a non-connected line. Do not disassemble a product or adjust volume without permission of NEC Corporation. Pay attention not to insert waste materials inside of products, if customer uses screwnails. Pack the product with original shipping package, because of avoidance of some damages during transportation, when customer returns it to NEC Corporation for repair and so on. Put the spacer of 1.0mm thickness or more on a product rear side, because of the protection for contortion. Data Sheet EN0542EJ1V0DS 9 104PW161 5. OUTLINE DRAWINGS 5.1 FRONT VIEW 105 .0 +0-0 .. 55 82 .0 +0-0 .3.3 13 .0 +0-0 .. 55 4 . 4 +- 00 .. 55 5 0 . 0 +- 22 .. 00 9 9 . 0 +- 00 .. 55 9 . 5 +- 00 .. 55 8 . 0 +- 00 .. 55 5.2 SIDE VIEW 105 .0 +0-0 .. 55 5 0 . 0 +- 22 .. 00 5.3 REAR VIEW 26 .5 +0 .2 2 - 2 . 5 -0 .2 +0 .5 105 .0 -0 .5 5 . 0 +- 00 .. 33 10 +2 . 0 -2 . 0 +0 .5 -0 .5 5 .0 Data Sheet EN0542EJ1V0DS 2 6 . 5 +- 00 .. 55 2 5 . 0 +- 00 .. 55 5 . 0 +- 00 .. 55 1 0 4 PW 1 6 1 1 6 . 7 +- 00 .. 55 (2 .0 ) 10 .2 +0-0 .5.5 15 .0 +0-0 .3.3 (2 .0 ) 104PW161 No part of this document may be copied or reproduced in any form or by any means without the prior written consent of NEC Corporation. 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