NXP UBA2017AT

Beschreibung

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.

Eigenschaften

 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

Typische Anwendungen

• Intended for fluorescent lamp ballasts with either a UBA2017A dimmable or a

Weiterführende Informationen

• Datenblatt
• Produktseite des IC-Herstellers