[O2Micro]

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.

FEATURES

• Single-stage power conversion, input voltage •ange 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