Phase-Shift PWM Controller

OZ964 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 Lamp (CCFL)_ backlight applications for small and large Liquid Crystal Displays (LCD). OZ964 operates in a zero-voltage switching mode that minimizes electromagnetic interference (EMI). In addition, OZ964 achieves a high power-conversion efficiency resulting in a lower operating temperature and higher system reliability. OZ964 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. OZ964 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. To avoid over-shoot and in-rush current to the CCFLs during ignition, a soft start function is provided for reliable CCFL operation. The controller provides open-lamp protection and over-voltage protection, while providing an appropriate response for either open-lamp ignition or removal of a CCFL during normal operation. Intelligent open-lamp protection and over voltage protection provides design flexibility with various transformer characteristics. Open- lamp protection time is user-defined. In addition, OZ964 provides a shutdown delay function that will keep the inverter module in normal operation for a short period of time if the input voltage suddenly drops and subsequently resumes to a normal level. The shutdown delay time is user-defined. By Unkown
OZ964 's PackagesOZ964 's pdf datasheet

OZ964 Pinout, Pinouts
OZ964 pinout,Pin out
This is one package pinout of OZ964,If you need more pinouts please download OZ964's pdf datasheet.

OZ964 Application circuits
OZ964 circuits
This is one application circuit of OZ964,If you need more circuits,please download OZ964's pdf datasheet.

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