OZ965_ Просмотр технического описания (PDF) - O2Micro International

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OZ965_

Intelligent Lighting Family Product Guide

O2Micro International 

OZ9913

FEATURES

• Wide input voltage range: 4.5V ~ 25V

• Phase shifted full bridge driving topology

• VIN feed-forward compensation for driver output overlap ratio

• Built-in high side power MOSFET driver

• Supports both internal and external PWM dimming

• Adjustable PWM dimming polarity

• Closed loop over-voltage protection

• Striking and open-lamp protection

• Shutdown delay timer

GENERAL DESCRIPTION

OZ9913 is a phase-shifted full bridge Cold Cathode Fluorescent Lamp (CCFL) con-

troller using a piezo transformer. It works with piezoelectric transformers from many

manufacturers and achieves optimal efficiency.

With VIN feed-forward compensation, OZ9913 selects the driver output overlap

based on the input voltage condition, and by varying the operating frequency,

OZ9913 can locate the optimal operating frequency for maximum efficiency. Higher

power-conversion efficiency results in lower power dissipation and higher system

reliability that are critical in display systems.

APPLICATIONS

• Notebook Computer

APPLICATION DIAGRAM

U.S. Patent #’s 6,259,615; 6,396,722; 6,804,129; 6,897,698; 7,151,394; and more patents pending.

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