UBA2074A - NXP

UBA2074A High Voltage Full-bridge control IC

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 cont.

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 the A-version) Arcing detection Brightness level adjustment through PWM dimming Integrated PWM generat.