INVERTER 104PW191 DATA SHEET (2nd edition) All information is subject to change without notice. Document Number: EN0554EJ2V0DS00 (2nd edition) Published date: March 2002 N CP(N) a NEC Corporation 2002 All rights reserved. 104PW191 INTRODUCTION No part of this document shall be copied in any form or by any means without the prior written consent of NEC Corporation. NEC Corporation does not assume any liability for infringement of patents, copyrights or other intellectual property rights of third parties by or arising from use of a product described herein or any other liability arising from use of such application. No license, express, implied or otherwise, is granted under any patents, copyrights or other intellectual property rights of NEC Corporation or of others. While NEC Corporation has been making continuous effort to enhance the reliability of its products, the possibility of failures cannot be eliminated entirely. To minimize risks of damage to property or injury to person arising from a failure in an NEC product, customers must incorporate sufficient safety measures in their design, such as redundancy, fire-containment and anti-failure features. NEC products are classified into the following three quality grades: "Standard", "Special", "Specific" The "Specific" quality grade applies only to applications developed based on a customer designated "quality assurance program" for a specific application. The recommended applications of a product depend on its quality grade, as indicated below. Customers must check the quality grade of each application before using it in a particular application. Standard: Computers, office equipment, communications equipment, test and measurement equipment, audio and visual equipment, home electronic appliances, machine tools, personal electronic equipment and industrial robots Special: Transportation equipment (automobiles, trains, ships, etc.), traffic control systems, anti-disaster systems, anti-crime systems, safety equipment and medical equipment (not specifically designed for life support) Specific: Military systems, aircraft, aerospace equipment, submersible repeaters, nuclear reactor control systems, life support systems (medical equipment, etc.) and any other equipment The quality grade of this product is "Standard" unless otherwise specified in this document. If customers intend to use this product for applications other than those specified for "Standard" quality grade, they should contact NEC Corporation sales representative in advance. Anti-radioactive design is not implemented in this product. DATA SHEET EN0554EJ2V0DS00 2 104PW191 CONTENTS INTRODUCTION.......................................................................................................................................... 2 1. OUTLINE ................................................................................................................................................... 4 1.1 STRUCTURE AND PRINCIPLE .......................................................................................................... 4 1.2 APPLICATIONS .................................................................................................................................... 4 1.3 FEATURES ............................................................................................................................................ 4 2. GENERAL SPECIFICATIONS................................................................................................................ 4 3. DETAILED SPECIFICATIONS............................................................................................................... 5 3.1 MECHANICAL SPECIFICATIONS ..................................................................................................... 5 3.2 ABSOLUTE MAXIMUM RATINGS.................................................................................................... 5 3.3 ELECTRICAL CHARACTERISTICS .................................................................................................. 6 3.3.1 Driving for inverter ....................................................................................................................... 6 3.3.2 Fuse ............................................................................................................................................... 6 3.4 CONNECTIONS AND FUNCTIONS FOR INTERFACE PINS .......................................................... 7 3.4.1 Detail of interface pins .................................................................................................................. 7 3.4.2 Positions of sockets ....................................................................................................................... 7 3.5 LUMINANCE CONTROLS.................................................................................................................. 8 4. RELIABILITY TESTS .............................................................................................................................. 9 5. PRECAUTIONS....................................................................................................................................... 10 5.1 MEANING OF CAUTION SIGNS ..................................................................................................... 10 5.2 CAUTIONS ......................................................................................................................................... 10 5.3 ATTENTIONS...................................................................................................................................... 10 5.3.1 Handling of the product............................................................................................................... 10 5.3.2 Environment................................................................................................................................ 10 5.3.3 Other.............................................................................................................................................11 6. OUTLINE DRAWINGS .......................................................................................................................... 12 6.1 FRONT VIEW ..................................................................................................................................... 12 6.2 SIDE VIEW ......................................................................................................................................... 12 6.3 REAR VIEW........................................................................................................................................ 12 DATA SHEET EN0554EJ2V0DS00 3 104PW191 1. OUTLINE 1.1 STRUCTURE AND PRINCIPLE 104PW191 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. 1.2 APPLICATIONS * High AC voltage generator of cold cathode fluorescent lamp for LCD 1.3 FEATURES * Pulse width modulation circuit 2. 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 85 k (typ.) Stray capacity 5 pF (typ.) Oscillation frequency 65 kHz (typ.) Board size 105.0 (W) x 26.5 (H) x 10.0 (D) mm (typ.) Weight 20.0 g (typ.) Adaptable product LCD module NL10276BC20-04 Lamp holder unit 104LHS35 DATA SHEET EN0554EJ2V0DS00 4 104PW191 3. DETAILED SPECIFICATIONS 3.1 MECHANICAL SPECIFICATIONS Parameter Specification Unit 105.0 0.5 (W) x 26.5 0.5 (H) x 10.0 0.5 (D) Board size Weight Note1 mm 20.0 (typ.), 23.0 (max.) g Note1: See "6. OUTLINE DRAWINGS". 3.2 ABSOLUTE MAXIMUM RATINGS Parameter Symbol Rating Unit Resistance RL 90 k Stray capacity CL 5 pF Power supply for inverter VDDB 0 to +15.0 V BRTI signal VBI -0.3 to +15.0 V BRTC signal VBC -0.3 to +15.0 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 - Remarks Ta = 25C - Note1: No condensation Note2: Ta = 70C, RH = 42% DATA SHEET EN0554EJ2V0DS00 5 104PW191 3.3 ELECTRICAL CHARACTERISTICS 3.3.1 Driving for inverter (Ta = 25C) Parameter Symbol Min. Typ. Max. Unit Resistance RL - 85 90 k Stray capacity CL - 5 - pF 10.8 12.0 13.2 V VBI 0 - 2.5 V Low VBCL 0 - 0.8 V at inverter power OFF High VBCH 2.0 - VDDB V at inverter power ON Input current Power supply for inverter IDDB - 530 750 m Output voltage Power supply for LCD lamp VS 1,150 1,250 1,500 Vrms IBL 4.5 5.0 5.5 mArms Oscillation frequency FO 60 65 70 kHz Luminance control frequency for LCD lamp FL 240 270 300 Hz Combined load Power supply for inverter VDDB Input voltage BRTI signal BRTC signal Output current LCD lamp Remarks - at maximum luminance, VDDB = 12.0V Note1 Starting voltage for lamp, RL = , CL = - 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. 3.3.2 Fuse Fusing line Fuse Type Supplier MMCT1.6A S.O.C. Corporation Rating Fusing current Note1 1.6 A VDDB 3.2 A 63 V Note1: The power supply capacity should be more than the fusing current. If the power supply capacity is less than the fusing current, the fuse may not blow for a short time, and then nasty smell, smoking and so on may occur. DATA SHEET EN0554EJ2V0DS00 6 104PW191 3.4 CONNECTIONS AND FUNCTIONS FOR INTERFACE PINS 3.4.1 Detail of interface pins CN1 socket: 53261-0890 (MOLEX Inc.) Adaptable plug: 51021-0800 (MOLEX Inc.) Pin No. 1 2 3 4 5 6 7 8 Symbol VDDB VDDB GNDB GNDB BRTC BRTI GNDB NC Function Power supply Power supply Ground Ground Inverter ON/OFF signal Input of luminance control by resistor / voltage control method Ground Non connection Note1: See "3.5 LUMINANCE CONTROLS". Remarks ON: High, OFF: Low Note1 CN1: Figure of socket 7 8 1 2 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 3 3.4.2 Positions of sockets Coil 3 CN2 CN1 Insert direction 1 1 Insert direction 8 Protect cover for transformer DATA SHEET EN0554EJ2V0DS00 7 104PW191 3.5 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 10k 5%, B curve, 1/10W. Minimum point of the resistor is the maximum luminance. Also maximum point of the resistor is the minimum luminance. Resistor control GNDB BRTI R * Luminance ratio Note1 Resistance Luminance ratio 0k 100% (Maximum) 10k 20% (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 20% (Minimum) Note1: These data are the target values. DATA SHEET EN0554EJ2V0DS00 8 104PW191 4. RELIABILITY TESTS Test item High temperature and humidity (Operation) Condition 60 2C, RH = 95% 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) -30 3C...30minutes 85 3C...30minutes 100cycles, 1hour/cycle Vibration (Non operation) 10 to 57Hz, Amplitude 0.75mm 58 to 500Hz, 9.8m/s2 11 minute/cycle X, Y, Z direction 1 hour each directions Mechanical shock (Non operation) Judgment No physical damage No electrical damage 980m/ s2, 11ms X, Y, Z direction 5 times each directions DATA SHEET EN0554EJ2V0DS00 9 104PW191 5. PRECAUTIONS 5.1 MEANING OF CAUTION SIGNS The following caution signs have very important meaning. Be sure to read "5.2 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. 5.2 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) 5.3 ATTENTIONS 5.3.1 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. 5.3.2 Environment Do not operate or store in high temperature, high humidity, dewdrop atmosphere or corrosive gases. 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. DATA SHEET EN0554EJ2V0DS00 10 104PW191 5.3.3 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. Put the spacer of 1.0mm thickness or more on a product rear side, because of the protection for contortion. DATA SHEET EN0554EJ2V0DS00 11 104PW191 6. OUTLINE DRAWINGS 6.1 FRONT VIEW 105 .0 +0- 0 .. 55 82 .0 +0-0 .1.1 13 .0 +0- 0 .. 22 3 . 1 +- 00 .. 55 2 6 . 5 +- 00 .. 55 2 5 . 0 +- 00 .. 33 5 . 0 +- 00 .. 22 1 0 4 PW 1 9 1 1 6 . 8 +- 00 .. 55 1 .0 +0- 0 .5.5 10 .0 +0-0 .5.5 15 .0 +0-0 .1.1 1 .0 +0-0 .5.5 5 0 . 0 +- 22 .. 00 9 9 . 0 +- 00 .. 55 10 .0 +0 .5 -0 .5 8 . 0 +- 00 .. 55 6.2 SIDE VIEW 105 .0 +0- 0 .. 55 5 0 . 0 +- 22 .. 00 6.3 REAR VIEW 2 6 . 5 +- 00 .. 55 5 . 0 +- 22 .. 00 2 - 2 . 5 +- 00 .. 11 105 .0 +0- 0 .. 55 5 . 0 +- 00 .. 22 DATA SHEET EN0554EJ2V0DS00 12