UBA2017A Datasheet | NXP Semiconductors

description The UBA2017/UBA2017A are high-voltage Integrated Circuits (IC) intended to drive fluorescent lamps with filaments such as Tube Lamps (TL) and pact Fluorescent Lamps (CFL) in general lighting applications. The IC prises 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 d V/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 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 UBA2017/UBA2017A 600 V fluorescent lamp driver with linear dimming function 3. Applications - Intended for fluorescent lamp ballasts with either a UBA2017A dimmable or a UBA2017 fixed output for AC mains voltages up to 390 V. 4. Ordering information Table 1. Ordering information Type number Package Name Description UBA2017T/...