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OZ962

ETC
Part Number OZ962
Manufacturer ETC
Description High-Efficiency Inverter Controller
Published May 13, 2005
Detailed Description OZ962 High-Efficiency Inverter Controller FEATURES • • • • • • • • • Single-stage power conversion, input voltage range ...
Datasheet PDF File OZ962 PDF File

OZ962
OZ962

Overview
OZ962 High-Efficiency Inverter Controller FEATURES • • • • • • • • • Single-stage power conversion, input voltage range of 5V to 18V Reduces the number of components and board size by 30% compared with conventional design Supports both floating and grounded secondary designs 90% efficiency vs.
typical 75% efficiency of conventional designs Internal open-lamp and short-circuit protections Wide dimming range Supports synchronization among multiple inverter modules Reliable 2 -winding transformer design, eliminates arcing problems Constant frequency, symmetrical, sinusoidal drive GENERAL DESCRIPTION The OZ962 is a unique high-efficiency, CCFL backlight controller.
It generates symmetrical, near sinusoidal output voltage and current waveforms for driving a CCFL backlight.
The OZ962 operates in a single, constant frequency, pulse-width-modulation (PWM) mode.
Typical operating frequency ranges between 30 KHz to 100 KHz, depending on the CCFL and the transformer’s characteristics.
Operating in a PWM push-pull manner, the transformer in the OZ962 backlight inverter requires only one primary winding and one secondary winding, with the secondary winding requiring no fold-back treatment.
The OZ962 is available in both 16-pin SOIC and TSSOP packages.
It is specified over the commercial temperature range: 0 oC to +70 oC.
ORDERING INFORMATION OZ962R - 16 lead TSSOP OZ962G - 16-pin plastic SOP TYPICAL APPLICATION CIRCUIT VDD (+12V) ENA GND CN1 U1 16 REF VDD OZ962G 2 15 RT OVP 14 3 NC CT 4 13 SCP CLK 5 12 ADJ ENA 6 11 FB NDR 7 10 CMP PDR 8 9 GND SST 1 F1 1A Fast Fuse + C1 22u 25V R5 10K R10 100 3 C8 0.
22u 4 5,6 7,8 R6 30 1.
0K 2 Q1 1 U2 Q2 C6 2.
2u 50V + R14 * 33T * 2200T C7 68p 3KV 3.
5W R9 R1 220K 200K C9 .
01u R2 10K C2 R3 5.
1K 0.
1u 330p C3 C5 220p R7 100K SI4559EY C4 0.
1u R12 750 R11 1M R4 15K R8 0.
5 R13 100 Figure 1.
Typical Floating Secondary Application Circuit 03/01/00 ©Copyright 1999 by O2Micro OZ962-SF-2.
7 All Rights Reserved Page 1 U.
S.
Patent #5,619,402 O...


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