IR2161_15 Datasheet, PDF (1/20 Pages) International Rectifier – HALOGEN CONVERTOR CONTROL IC

Data Sheet No. PD60219 rev C
IR2161(S) & (PbF)
HALOGEN CONVERTOR CONTROL IC
Features
• ^{Intelligent half-bridge driver}
• ^{Auto Resetting Short Circuit Protection}
• ^{Auto Resetting Overload Protection}
• Externally Triggerable Latching Shutdown
• Latching Overtemperature Protection
• Frequency Modulation “dither” (for lower EMI)
• Micropower Startup (<300 μA)
• Phase Cut dimmable for leading / trailing edge
• Output Voltage Shift Compensation.
• Real Softstart
• Adaptive Dead Time
• Small 8 Pin DIP/SOIC Package
• Also available LEAD-FREE (PbF)
Packages
8-Lead PDIP
IR2161
8-Lead SOIC
IR2161S
Description
The IR2161 is a dedicated Intelligent Half bridge Driver IC for a Halogen convertor (electronic transformer). It
includes all necessary protection features and also allows the Convertor to be dimmed externally with a
standard phase cut dimmer with both leading or trailing edge types. This IC provides the advantage of reduced
thermal stress in the lamp due to softstart. There is also compensation of the output voltage for load regulation.
It enables the convertor to operate with extremely low harmonic distortion over the full range of loads. The
IR2161 includes adaptive deadtime to allow cool running MOSFETs and improves the EMI behaviour due to
frequency modulation (dither). All the features are integrated in a small 8 pin DIP/SOIC package to allow for a
size reduction in the next generation of convertors.
Typical Connections
RD
RS
DCP1
CD
DS
DB
DCP2
R1
C1
D1
D2
LF
AC LINE _CLF
INPUT
CVCC1
VCC
1
COM ₂
CVCC2
CSD ₃
8 ^VB
7 ^HO
6 ^{VS CB}
Q1
CSNUB
T1
VZ
CS ₄
5 ^LO
Q2
C3 C4
D3
D4
RL
R2
C2
CSD CCS
RCS
12VAC
OUTPUT
Note: Throughout this data sheet “convertor” is spelled in accordance with standard IEC 61047 “DC or AC supplied convertors
for filament lamps – Performance requirements”.
www.irf.com
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