Features

Data Sheet No. PD60219 rev C

HALOGEN CONVERTOR CONTROL IC

Typical Connections

IR2161(S) & (PbF)

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.

www.irf.com

1

Packages

8-Lead PDIP

IR2161

8-Lead SOIC

IR2161S

Note: Throughout this data sheet “convertor” is spelled in accordance with standard IEC 61047 “DC or AC supplied convertors

for filament lamps – Performance requirements”.

AC LINE

INPUT

12VAC

OUTPUT

1

2

3

4

VCC

COM

CS

LO

VS

HO

VB

8

7

6

5

CSD

Q1

Q2

RS

RD

CD

LF

CLF

VZ

DS

CSD

RCS

CB

RL

CVCC1

DB

CCS

CVCC2

D1

D2

D3

D4

CSNUB

C3

C4

R1

C1

R2

C2

T1

DCP1

DCP2