NXP’s UBA2016A/15/15 is a 600V fluorescent lamp driver with integrated PFC, linear dimming and boost functions, including a fluorescent lamp driver Module, a half-bridge driver, a PFC controller/driver in critical conduction mode, and several protection functions, Mainly used for general lighting small fluorescent lamps and tube lamps. This article introduces the UBA2016A/15/15A main features and advantages and block diagram, basic PFC application circuit diagram, lamp current control diagram and various application circuit diagrams, and UBA2015AP 120 V (AC ) Evaluation Board Specifications, Circuit Diagram, Bill of Materials and PCB Component Layout.

UBA2016A/15/15A:600 V fluorescent lamp driver with PFC, linear dimming and boost function

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. The IC drives fluorescent lamp(s) using a half-bridge circuit made of two MOSFETs with a supply voltage of up to 600 V.

The UBA2016A/15/15A are designed to be 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 or the PFC. The supply current of the IC is low. An internal clamp limits the supply voltage.

Main features and advantages of UBA2016A/15/15A:

 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 lamps

 Adjustable lamp current boost at start-up (UBA2016A only)

 Lamp current control

 Enable input (UBA2015 and UBA2015A only)

 Protection

 Hard switching/capacitive mode protection

 Half-bridge overcurrent (coil saturation) protection

 Lamp overvoltage (lamp r

UBA2016A/15/15A Application:

Intended for fluorescent lamp ballasts with either a dimmable (UBA2016A and UBA2015A) or a fixed (UBA2015) output and PFC for AC mains voltages of up to 390 V.

Figure 1. UBA2016A block diagram

Figure 2. UBA2015A and UBA2015 block diagram

Figure 3. UBA2016A/15/15A Basic PFC Application Circuit Diagram

Figure 4. UBA2016A/15/15A basic half-bridge and IC power connection circuit diagram

Figure 5. Lamp Current Control Diagram

Figure 6. UBA2016A boost application case diagram
Component values ​​for Vo(PFC) = 430 V:
Rhv = 22Mohm(500 V); Chv = 100 nF (500 V); Dreset = 1N4148; CBOOST = 150 nF (63 V);
RBOOST = 10 Mohm and Rbias = 10 Mohm

Figure 7. UBA2016A TL or CFL Application Circuit Diagram (FireWire Filter Not Shown)

Figure 8. UBA2016A basic TL or CFL application circuit diagram (with better PFC performance) (firewire filter not shown)

Figure 9. UBA2016A Fixed Time Boost Startup TL or CFL Application Circuit Diagram (FireWire Filter Not Shown)

Figure 10. UBA2016A TL or CFL Application Circuit Diagram for Boost Start Dependent on Lamp Temperature (Live Wire Filter Not Shown)

Figure 11. UBA2016A Dimmable TL Application Circuit Diagram (FireWire Filter Not Shown)

UBA2015AP 120 V (AC) Evaluation Board

This evaluation board is intended to build applications with the UBA2016A, UBA2015A and UBA2015 ballast controller family. This document describes the specification and use of the board. Default, this ballast design is intended to drive one TL5HE35W lamp with the UBA2015AP. However, several options are provided on the board to use it with the UBA2016AP and UBA2015P.

Figure 12. UBA2015AP 120 V (AC) Evaluation Board Outline Drawing
UBA2015AP 120 V (AC) Evaluation Board Specifications:

Supported Lamp Types:


Figure 13. UBA2015AP 120 V (AC) Evaluation Board Connection Diagram

Figure 14. UBA2015AP 120 V (AC) Evaluation Board Block Diagram

Figure 15. UBA2015AP 120 V (AC) Evaluation Board Circuit Diagram: Half-Bridge Circuit

Figure 16. UBA2015AP 120 V (AC) Evaluation Board Circuit Diagram: PFC Circuit

Figure 17. UBA2015AP 120 V (AC) Evaluation Board Circuit Diagram: Control Circuit

Figure 18. UBA2015AP 120 V (AC) Evaluation Board Circuit Diagram: Dimming Input Circuit

Figure 19. UBA2015AP 120 V (AC) Evaluation Board Circuit Diagram: Test Point Circuit

UBA2015AP 120 V (AC) Evaluation Board Bill of Materials (BOM):






Figure 20. UBA2015AP 120 V (AC) Evaluation Board Component Layout (Top Layer)

Figure 21. UBA2015AP 120 V (AC) Evaluation Board Component Layout (Bottom Layer)
For details, see:
http://www.nxp.com/documents/data_sheet/UBA2016A_15_15A.pdf
and
http://www.nxp.com/documents/user_manual/UM10438.pdf