UBA2015A
Overview
The UBA2016A/15/15A 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, built-in critical conduction mode Power Factor Correction (PFC) controller/driver and several protection mechanisms.
- Power factor correction features:; Integrated 4-pin critical conduction mode PFC controller/driver; Open and short pin-short protection on PFC feedback pin; Overcurrent protection; Overvoltage protection
- 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 (UBA2016A and UBA2015A only); EOL (End-Of-Life) detection (both symmetrical and asymmetrical); Adjustable preheat time; Adjustable preheat current; Adjustable fixed frequency preheat (UBA2015 and UBA2015A only); 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 lamp
