OZ965IG
Description
The OZ965 is a single chip, high-efficiency, Cold Cathode Fluorescent Lamp (CCFL) backlight inverter controller whose primary function is to convert +5 volt DC power to approximately 600 VAC.
Key Features
- Operating Principle: The CCFL tube, transformer secondary, and capacitor form a resonant circuit
- The OZ965 utilizes the low energy loss resonate mode principle to deliver a very high efficiency inverter
- The OZ965 drives the transformer primary with a variable pulse width voltage directly from the +5v supply
- The resultant primary drive current is alternately reversing with zero-voltage-switching
- This sinusoid results in very little harmonic emi/rfi emissions
- The OZ965 operates at a single, constant frequency in a PWM mode
- Typical operating frequency ranges between 30 KHz to 200 KHz, dependent upon the CCFL and transformer characteristics
- Intelligent open-lamp protection provides design flexibility so various transformer models/manufacturers may be used
- Its high driving capability allows the OZ965 to drive high power MOSFETs
- The single stage design results in a low cost, reliable transformer without expensive, less reliable secondary fold-back treatment
