OZT1060中文资料Phase-Shift PWM Controller数据手册O2Micro规格书

描述 Description

GENERAL DESCRIPTION
OZT1060 is a high efficiency, Pulse Width Modulation (PWM) controller designed for both DC/DC and DC/AC high-voltage applications. The average current mode control is suitable for DC/DC converters where both voltage and current feedback are required, as well as for Cold Cathode Fluorescent Lamps (CCFL) backlight applications for small and large Liquid Crystal Displays (LCD).
OZT1060 operates in a zero-voltage switching mode that minimizes electromagnetic interference (EMI). In addition, OZT1060 achieves a high power-conversion efficiency resulting in a lower operating temperature and higher system reliability.
OZT1060 supports a wide input voltage range and provides a constant, user-defined, operating frequency, ensuring that the CCFLs operate at a fixed frequency. This eliminates interference among CCFLs and the LCD panel. Interference causes electromagnetic compatibility (EMC) problems and may create visual effects (waterfall) on LCD panels. The controller provides a phase-shift square wave output that is able to drive a full bridge power train.
OZT1060 utilizes a pulse width modulation (PWM) dimming method to achieve a wide dimming range. The IC performs the CCFL dimming function with an analog or low frequency PWM control. The PWM frequency is user defined.FEATURES
• Controller for high-voltage DC/DC and
   DC/AC converters
• High efficiency, zero-voltage switching
• Supports wide input voltage range
• Constant operating frequency
• Built-in PWM dimming control with wide
   dimming range
• Soft start function
• Built-in intelligence for ignition and normal
   operation of CCFLs
• Built-in open-lamp protection and over
   voltage protection
• Shutdown delay for input voltage brownout
   condition
• Built-in under-voltage lockout protection
• Toggle pin to reset the IC after shutdown
• Low stand-by power

特性 Features

• Controller for high-voltage DC/DC and
   DC/AC converters
• High efficiency, zero-voltage switching
• Supports wide input voltage range
• Constant operating frequency
• Built-in PWM dimming control with wide
   dimming range
• Soft start function
• Built-in intelligence for ignition and normal
   operation of CCFLs
• Built-in open-lamp protection and over
   voltage protection
• Shutdown delay for input voltage brownout
   condition
• Built-in under-voltage lockout protection
• Toggle pin to reset the IC after shutdown
• Low stand-by power