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UBA2074 - High Voltage Full-bridge control IC

General Description

The UBA2074 is a high voltage IC intended to drive Cold Cathode Fluorescent Lamps (CCFLs) for back-lighting applications.

The IC contains level-shifters, bootstrap diodes and drivers for the external full-bridge power switches.

Key Features

  • Suitable for operating in a very wide inverter supply voltage range (up to 550 V DC for SO28 package, up to 225 V for SSOP28 package) Wide IC supply voltage range (9 V to 30 V DC) Suitable for synchronizing multiple inverters to a single operating frequency with equal lamp current phase Adjustable maximum fault timing Integrated level-shifters Integrated bootstrap diodes Lamp current control Over-voltage control Over-current protection Ignition failure detection Hard-switching control (not in th.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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D R A FT D D R A FT D D R A FT D R D R A FT D D R A FT UBA2074(A) Rev. 02.0 — February 2007 High Voltage Full-bridge control IC for CCFL backlighting R Preliminary data sheet D R A FT R A FT D R A R R A FT D A FT A FT D R A FT D R A FT R A FT D A FT D R FT D R A F D R A FT 1. General description D D R A FT D R The UBA2074 is a high voltage IC intended to drive Cold Cathode Fluorescent Lamps (CCFLs) for back-lighting applications. The IC contains level-shifters, bootstrap diodes and drivers for the external full-bridge power switches. Furthermore, the UBA2074 has a build-in HF oscillator which determines the operating frequency, a phase shift controller for obtaining constant lamp current, and a PWM generator which is used to set the brightness level of the CCFLs.