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 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
Package
Name
UBA2017T/N1
UBA2017AT/N1
UBA2017P/N1
UBA2017AP/N1
Table 2.
Type
UBA2017P/T
UBA2017AP/AT
[1]
Type number
Description
plastic small package outline package; 16 leads; body width 3.9 mm
plastic dual in-line package; 16 leads; (300 mil)
Version
SOT109-1
SOT38-4
SO16
DIP16
Functional selection
PFC
no
[1]
no
[1]
Dimmable
no
yes
Fixed frequency preheat
yes
yes
If you require PFC functionality, see the UBA2016A, UBA2015A and UBA2015.
UBA2017
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2012. All rights reserved.
Product data sheet
Rev. 2 — 15 May 2012
2 of 29
NXP Semiconductors
UBA2017/UBA2017A
600 V fluorescent lamp driver with linear dimming function
5. Block diagram
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(1) Pin 10 is not connected in the UBA2017P/T.
Fig 1.
Block diagram UBA2017
UBA2017
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2012. All rights reserved.
Product data sheet
Rev. 2 — 15 May 2012
3 of 29
NXP Semiconductors
UBA2017/UBA2017A
600 V fluorescent lamp driver with linear dimming function
6. Pinning information
6.1 Pinning
SLHB
IFB
EOL
VFB
IREF
CIFB
CF
CPT
1
2
3
4
5
6
7
8
aaa-001477
16 GHHB
15 FSHB
14 SHHB
SLHB
IFB
EOL
VFB
IREF
CIFB
CF
CPT
1
2
3
4
16 GHHB
15 FSHB
14 SHHB
UBA2017
13 GLHB
12 VDD
11 GND
10 DIM or n.c.
9 PH/EN
UBA2017
5
6
7
8
aaa-001478
13 GLHB
12 VDD
11 GND
10 DIM or n.c.
9 PH/EN
UBA2017T: pin 10 is n.c. (not connected).
UBA2017AT: pin 10 is input pin DIM.
UBA2017P: pin 10 is n.c. (not connected).
UBA2017AP: pin 10 is input pin DIM.
Fig 2.
Pin configuration UBA2017T/UBA2017AT
(SO16)
Fig 3.
Pin configuration UBA2017P/UBA2017AP
(DIP16)
6.2 Pin description
Table 3.
Pin description
Description
1
2
3
4
5
6
7
8
9
-
10
11
12
13
14
15
16
half-bridge (HB) low-side switch current sense input
lamp current feedback input
end-of-life sensing input
lamp voltage feedback input
reference current setting
lamp current feedback compensation
high frequency (HF) oscillator timing capacitor
preheat and fault timing capacitor
preheat frequency setting combined with enable
dimming function input (UBA2017AT/AP)
UBA2017P/T
ground
supply
HB low-side switch gate driver output
HB high-side source connection
HB floating supply connection
HB high-side switch gate driver output
UBA2017AT/AP UBA2017P/T
SLHB
IFB
EOL
VFB
IREF
CIFB
CF
CPT
PH/EN
DIM
n.c.
GND
VDD
GLHB
SHHB
FSHB
GHHB
1
2
3
4
5
6
7
8
9
10
-
11
12
13
14
15
16
Symbol Pin
UBA2017
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2012. All rights reserved.
Product data sheet
Rev. 2 — 15 May 2012
4 of 29
NXP Semiconductors
UBA2017/UBA2017A
600 V fluorescent lamp driver with linear dimming function
7. Functional description
7.1 Introduction
The UBA2017/UBA2017A is an integrated circuit for electronically ballasted fluorescent
lamps. It provides a half-bridge controller/driver with all the necessary functions for correct
preheat, ignition and on-state operation of the lamp. Several protection mechanisms are
incorporated to ensure the safe operation of the fluorescent lamp or a shutdown of the
complete ballast under any abnormal operating conditions or lamp failure.
7.2 Half-bridge driver
The IC incorporates drivers for the half-bridge switches and all related circuits such as
non-overlap, high-voltage level shifter, bootstrap circuit for the floating supply and hard
switching and capacitive mode detection.
The UBA2017/UBA2017A is designed to drive a half-bridge inverter with an inductive
load. The load consists typically of an inductor with a resonant capacitor and a TL or CFL.
A basic half-bridge application circuit driving a TL is shown in
Figure 4
which also shows a
typical IC supply configuration with a start-up bleeder resistor and a dV/dt supply.
VBUS
VDD
GHHB
SHHB
UBA2017
UBA2017A
FSHB
GLHB
GND
aaa-001479
Fig 4.
Basic half-bridge and IC supply connection diagram
UBA2017
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2012. All rights reserved.
Product data sheet
Rev. 2 — 15 May 2012
5 of 29
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