DC-AC INVERTER UNIT (PRELIMINARY INFORMATION) CXA-0283 (15W QUAD OUTPUT WITH DIMMING FUNCTION) DESCRIPTION : This DC to AC Inverter was developed for many other low LCD Backlight power supply as low profile applications, either for LCD Monitor or Industrial PC. APPLICABLE LCD: ??? inches quad lamp type Lamp Voltage 660V Lamp Current 5.5mA Lamp Start Up Voltage 1600Vrms (Vin : 12V) CXA-0283 9929 MADE IN JAPAN FEATURES : Current Feedback Circuit High Efficiency Low noise with voltage resonant circuit Regulated output current TEMPERATURE & HUMDITY : Operating Temperature Range Storage Temperature Range Humidity 0 °C ~ +60°C -30 °C ~ +85°C 95 %RH max 3.5 DIMENSIONS : 37±0.5 CN2 CN5 CXA-0283 9929 CN3 CN4 MADE IN JAPAN 4 3.5 CN1 3.5 Unit : mm 80±0.3 66.5 Weight : 43.0(g) typ. 3 180±0.5 3 1 2 8.5 m ax. 4 No. 1 2 3 4 Part Discription PCB Connector CN1 Connector CN2,4 Connector CN3,5 Qty. 1 1 2 2 Material UL94V-0 (FR-4 or CEM-3) S7B-PH-SM3 SM02B-BHSS-1 SM02(4.0)B-BHS-1 Note t=1mm JST JST JST Power Systems – The Power Solution Web: Email: www.Power-Systems.de [email protected] All specification are subject to change without notice. Address: Dörnet 8 ; 74360 Ilsfeld-Auenstein / Germany Tel. : + 49 / 70 62 / 67 59 - 6 Fax: + 49 / 70 62 / 67 59 - 80 Page ( 1 / 4 ) VER, 04 October 2002 DC-AC INVERTER UNIT (PRELIMINARY INFORMATION) CXA-0283 (15W QUAD OUTPUT WITH DIMMING FUNCTION) Input Side CN1: Output Side CN2,3,4,5: Pin No. Symbols Ratings CN 1-1 Vin 10.8~13.2V CN 1-2 CN 1-3 GND 0V CN 1-4 Vbr 0~2.5V CN 1-5 Vst 0V/5V CN 1-6 Pin No. Symbols CN 2-1 VHIGH1 CN 2-2 VHIGH2 CN 3-1 VLOW1 CN 3-2 VLOW2 CN 4-1 VHIGH3 CN 4-2 VHIGH4 CN 5-1 VLOW3 CN 5-2 VLOW4 CN 1-7 0V/2.5~Vin 0~0.4V: OFF 2.5~Vin V: ON Vrmt Ratings 660 Vrms 660 Vrms (2V) (2V) 660 Vrms 660 Vrms (2V) (2V) ELECTRICAL CHARACTERISTICS: Conditions Items Symbols Output Current Iout Input Current Frequency Open Circuit Voltage Dimming Function Warning Signal Specification RL1~4(KΩ ) Min. Typ. Max. Vin (V) Vrmt (V) Vbr (V) Ta (°C) // CL1~4(pF) 12±1.2 Iin1 12±0.6 Iin2 F1 12±0.6 F2 (Duty) Vopen 10.8±1.2 Iout1/2 12±1.2 Vst 0 135~145//5 5.0 5.5 6.0 0 140//5 135~145//5 40 120 1.7 45 140 2.5 A DC 1 mA DC 50 kHz 160 Hz 0 2.5 5±0.25 135~145//5 0~60 0 12±1.2 Unit ∞ 1500 1600 2.5 135~145//5 0 135~145//5 *Note10. 135~145//5 mArms - Vrms mArms 1.8 2.5 3.2 4.5 5.0 5.5 - 0 0.5 VDC DIMMING CHARACTERISTICS (Reference): Iout (mArms) 6,0 5,0 4,0 3,0 2,0 1,0 0,0 0 0,5 1 1,5 2 2,5 Vbr (VDC) Power Systems – The Power Solution Web: Email: www.Power-Systems.de [email protected] All specification are subject to change without notice. Address: Dörnet 8 ; 74360 Ilsfeld-Auenstein / Germany Tel. : + 49 / 70 62 / 67 59 - 6 Fax: + 49 / 70 62 / 67 59 - 80 Page ( 2 / 4 ) VER, 04 October 2002 DC-AC INVERTER UNIT (PRELIMINARY INFORMATION) CXA-0283 (15W QUAD OUTPUT WITH DIMMING FUNCTION) APPLICATION (for example) Voltage Dimming Type Iin CN1-1.2 Vin A Q 1 V Vin 10.8~13.2V RL CN2-1 Vhigh1 A C Iout1 RL CN2-2 Vhigh2 A CN3-2 Vlow2 1 V b 9 5 CN1-6 Vst Vrmt 5V C CN3-1 Vlow1 3 4 CN1-5 Vbr T2 6 3 4 9 RL CN4-1 Vhigh3 A CN5-1 Vlow3 C 5 SW Iout2 C 2 CN1-7 Vrmt a 6 2 CN1-3.4 GND Vbr 0~2.5V T1 Iout3 RL CN4-2 Vhigh4 A CN5-2 Vlow4 F 1000:1 PROBE Iout4 V TEST CIRCUIT: Power Systems – The Power Solution Web: Email: www.Power-Systems.de [email protected] All specification are subject to change without notice. Address: Dörnet 8 ; 74360 Ilsfeld-Auenstein / Germany Tel. : + 49 / 70 62 / 67 59 - 6 Fax: + 49 / 70 62 / 67 59 - 80 Page ( 3 / 4 ) VER, 04 October 2002 DC-AC INVERTER UNIT (PRELIMINARY INFORMATION) CXA-0283 (15W QUAD OUTPUT WITH DIMMING FUNCTION) Note 1. For circuit connection, please prefer to test circuit diagram Note 2. Please use minimum of 2mm clearance (all directions) between inverter high voltage area and any conductors. Please refer to mechanical drawing for marking of high voltage area. Note 3. Open voltage (strike voltage) is measured across the transformer secondary winding at no load as the reading at the output connector would be less than the actual value. Note 4. If the start voltage falls below Cold Cathode Tube strike voltage, the CCFL will not light up easily specially at lower ambient temperature. Please review mounting instruction to avoid any abnormal operation due to coupling/leakage capacitance of inverter high voltage area to any surrounding conductor. Note 5. Please check your lamp characteristic for minimum operational current and set the limit point in your design to avoid flickering and/or abnormal operation. Note 6. For proper operation of circuit protection (FUSE or IC PROTECTOR), please use minimum of 4A capacity for input power supply. Note 7. The recommendation range of Vbr is 0 to 1.3V and normal dimming range is 1.3 to 1.5V. However each lamp has deferent characteristics, therefore care must be taken to check brightness with using lamp and DC to AC Inverter units combination to avoid flickering or other problems. Note8. The test circuits added 5pF capacitor across the load resistor for LCD backlight stay capacitor. Note9. If the inverter detects open circuit all lamps for more than 3 seconds it will shut down. Note10. In the test circui, if anyone of loads open, then the warning signal will be activated (+5V). Note11. The warning output 5V in abnormal circumstances. Power Systems – The Power Solution Web: Email: www.Power-Systems.de [email protected] All specification are subject to change without notice. Address: Dörnet 8 ; 74360 Ilsfeld-Auenstein / Germany Tel. : + 49 / 70 62 / 67 59 - 6 Fax: + 49 / 70 62 / 67 59 - 80 Page ( 4 / 4 ) VER, 04 October 2002