IR21592_15 Datasheet, PDF (1/26 Pages) International Rectifier – DIMMING BALLAST CONTROL IC

Data Sheet No. PD60194 revD
IR21592(S) & ^(PbF)
IR21593(S) & ^(PbF)
Features
DIMMING BALLAST CONTROL IC
• ^{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}
• ^{Lamp ignition detection}
• ^{Programmable ignition-to-dim time}
• ^{0.5 to 5VDC dimming control input}
• ^{Min and max lamp power adjustments}
• ^{Programmable minimum frequency}
• ^{Internal current sense blanking}
• ^{Full lamp fault protection}
• ^{Brown-out protection}
• ^{Automatic restart}
• ^{Micro-power startup}
• ^{Zener clamped Vcc}
• ^{Over-temperature protection}
• ^{16-pin DIP and SOIC package types}
Parameter
Deadtime
Frequency
IR21592
1.8us
See
IR21593
1.0us
See
Description
Range
Graph 11 Graph 12
Description: The IR21592/IR21593 are complete dimming ballast controllers and 600V Packages
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
16 Lead SOIC
(narrow body)
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 IR21592/
IR21593 are available in both 16 pin DIP and 16 pin narrow body SOIC packages.
Typical Connection
16 Lead PDIP
+ 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
HO ¹⁶
15
VS
VB ¹⁴
13
VCC
COM ¹²
LO ¹¹
10
CS
SD ⁹
R_PULL-UP
R_CS
Single Lamp Dimmable
- DC Bus
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