AN10958_15 Datasheet, PDF (1/56 Pages) NXP Semiconductors – Fluorescent lamp driver with PFC using the UBA2015/16 family

AN10958
Fluorescent lamp driver with PFC using the UBA2015/16
family
Rev. 2 — 9 August 2012
Application note
Document information
Info
Content
Keywords
UBA2015, UBA2015A, UBA2016A fluorescent lamp driver, PFC
Abstract
This application note describes designs using IC family UBA2015,
UBA2015A and UBA2016A for common ballast topologies.
The IC is a controller used in electronic ballast for fluorescent lamps
incorporating controllers and NMOST drivers for Power Factor Correction
(PFC) and the half-bridge circuit.
The high-voltage fluorescent lamp ballast controller drives a zero-voltage
switching resonant topology. The lamp controller module includes a
high-voltage level shift circuit and several protection features. The
protection features include hard switching/capacitive mode protection,
half-bridge overcurrent (coil saturation) protection, lamp overvoltage (lamp
removal) protection and temperature protection.
In addition to the lamp controller, the IC also contains a PFC controller.
The quasi-resonant operation guarantees efficient operation of the PFC
circuit. Overcurrent protection, overvoltage protection and
demagnetization sensing ensure safe operation under all conditions. The
brownout protection of the PFC controller reduces the half-bridge
frequency to prevent excessive currents.
The proprietary high-voltage BCD power logic process enables efficient,
direct start-up from the rectified universal mains voltage. The IC can drive
half-bridge circuits with a supply voltage up to 600 V (AC).
The PFC and lamp controller combination makes the IC suitable for
dimmable or fixed current output fluorescent ballasts with a PFC for AC
mains voltages up to 390 V.