UBA2017A
Overview
The UBA2017/UBA2017A are high-voltage Integrated Circuits (IC) intended to drive fluorescent lamps with filaments such as Tube Lamps (TL) and Compact Fluorescent Lamps (CFL) in general lighting applications. The IC comprises a fluorescent lamp control module, half-bridge driver and several protection mechanisms.
- Half-bridge driver features:; Integrated level-shifter for the high-side driver of the half-bridge; Integrated bootstrap diode for the high-side driver supply of the half-bridge; Independent non-overlap time
- Fluorescent lamp controller features:; Linear dimming (UBA2017A only); EOL (End-Of-Life) detection (both symmetrical and asymmetrical); Adjustable preheat time; Adjustable preheat current; Adjustable fixed frequency preheat; Lamp ignition failure detection; Ignition detection of all lamps at multiple lamps with separate resonant tanks; Second ignition attempt if first failed; Constant output power independent of mains voltage variations; Automatic restart after changing lamps; Lamp current control; Enable input
- Protection; Hard switching/capacitive mode protection; Half-bridge overcurrent (coil saturation) protection; Lamp overvoltage (lamp removal) protection; Temperature protection NXP Semiconductors
