IR2159 Datasheet, PDF (1/25 Pages) International Rectifier – DIMMING BALLAST CONTROL IC

Preliminary Data Sheet No. PD60169-D
IR2159^(S)
IR21591^(S)
DIMMING BALLAST CONTROL IC
Features
• ^{Ballast control and half-bridge driver in one IC}
• ^{Transformer-less lamp power sensing}
• ^{Closed-loop lamp power control}
• ^{Closed-loop preheat current control}
• ^{Programmable preheat time}
• ^{Programmable preheat current}
• ^{Brown-out protection}
• ^{Automatic restart}
• ^{Micro-power startup}
• ^{Zener clamped Vcc}
• ^{Over-temperature protection}
• ^{16-pin DIP and SOIC package types}
• ^{Programmable ignition-to-dim time}
• ^{0.5 to 5VDC dimming control input}
Parameter
IR2159 IR21591
• ^{Min and max lamp power adjustments}
• ^{Programmable minimum frequency}
• ^{Internal current sense blanking}
• ^{Full lamp fault protection}
Deadtime
Frequency
Range
1.8us
See
Graph 3
1.0us
See
Graph 4
Description
Packages
Description: The IR2159/IR21591 are complete dimming ballast controllers and 600V
half-bridge drivers all in one IC. The architecture includes phase control for trans-
former-less lamp power sensing and regulation which minimizes changes needed to
adapt non-dimming ballasts for dimming. Externally programmable features such as
preheat time and current, ignition-to-dim time, and a complete dimming interface with
minimum and maximum settings provide a high degree of flexibility for the ballast
design engineer. Protection from failure of a lamp to strike, filament failures, thermal
overload, or lamp failure during normal operation, as well as an automatic restart
function, have been included in the design. The heart of this control IC is a voltage-
controlled oscillator with externally programmable minimum frequency.The IR2159/
IR21591 are available in both 16 pin DIP and 16 pin narrow body SOIC packages.
16 Lead SOIC
(narrow body)
16 Lead PDIP
Typical Connection
+ Rectified AC Line
+ DC Bus
0.5 to 5VDC
R_VDC
C_VDC
C_VCO
C_PH
R_DIM
R_MAX
R_MIN
R_FMIN
R_IPH
R_VAC
1
VDC
2
VCO
3
CPH
4
DIM
5
MAX
6
MIN
7
FMIN
8
IPH
R_PULL-UP
16
HO
15
VS
14
VB
13
VCC
12
COM
11
LO
10
CS
9
SD
R_CS
Single Lamp Dimmable
- DC Bus
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