UBA2017A

UBA2017/UBA2017A 600 V fluorescent lamp driver with linear dimming function Rev. 2 — 15 May 2012 Product data sheet 1. General description 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. The IC drives fluorescent lamps using a half-bridge circuit made of two MOSFETs with a supply voltage of up to 600 V. The UBA2017/UBA2017A are supplied by a start-up bleeder resistor and a dV/dt supply from the half-bridge circuit, or any other auxiliary supply derived from the half-bridge. The supply current of the IC is low. An internal clamp limits the supply voltage. 2. Features and benefits  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 main...