Document
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) Description
Packages
8-Lead PDIP IR2161
8-Lead SOIC IR2161S
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
D1 LF
AC LINE INPUT
CLF
RD CD D2
RS DCP1
DS CVCC1
DCP2
DB
VCC 1
8 VB
Q1 CSNUB
COM
CVCC2 CSD
2 3
7 HO 6 VS
CB
T1
R1
IR2161
VZ
CS 4
5 LO
Q2
C3 C4
C1
D3 D4
CSD CCS
RL
RCS
12VAC OUTPUT
R2
C2
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
1
IR2161(S) & (PbF)
Absolute Maximum Ratings
Absolute maximum ratings indicate sustained limits beyond which damage to the device may occur. All voltage parameters are absolute voltages referenced to COM, all currents are defined positive into any lead. The thermal resistance and power dissipation ratings are measured under board mounted and still air conditions.
Symbol Definition
Min.
VB VS VHO VLO IOMAX
High side floating supply voltage High side floating supply offset voltage High side floating output voltage Low side output voltage Maximum allowable output current (HO,LO) due to external power transistor miller effect
-0.3 VB - 25 VS - 0.3
-0.3 -500
VCSDMAX VCS ICS ICC dV/dt
CSD pin voltage Current sense pin voltage Current sense pin current Supply current (Note 1) Allowable offset voltage slew rate
-0.3 -0.3 -5 -20 -50
PD RthJA
Maximum power dissipation @ TA ≤ +25°C PD = (TJMAX-TA)/RthJA Thermal resistance, junction to ambient
(8 Lead DIP) (8 Lead SOIC) (8 Lead DIP)
(8 Lead SOIC)
— — — —
TJ Junction temperature TS Storage temperature TL Lead temperature (soldering, 10 seconds)
-55 -55 —
Recommended Operating Conditions
For proper operation the device should be used within the recommended conditions.
Max.
625 VB + 0.3 VB + 0.3 VCC + 0.3
500
VCC + 0.3 VCC + 0.3
5 20 50 1 0.625 125 200 150 150 300
Units
V
mA V mA V/ns W °C/W
°C
Symbol Definition
Min.
Max. Units
VBS High side floating supply voltage
VCC - 0.7
VCLAMP
VBSMIN
Minimum required VBS voltage for proper HO functionality
4.3
—
VS Steady state high-side floating supply offset voltage
-1 600 V
VCC Supply voltage
VCCUV+
VCLAMP
ICC Supply current
(Note 2)
10
mA
CSD CSD pin external capacitor
47 — nF
ICS Current sense pin current
-1 1 mA
TJ Junction temperature
-25 125 °C
Note 1: Note 2:
This IC contains a zener clamp structure between the chip VCC and COM which has a nominal breakdown voltage of 15.6V. Please note that this supply pin should not be driven by a DC, low impedance power source greater than the VCLAMP specified in the Electrical Characteristics section. Enough current should be supplied into the VCC pin to keep the internal 15.6V zener clamp diode on this pin regulating its voltage, VCLAMP.
2 www.irf.com
IR2161(S) & (PbF)
Electrical Characteristics
VCC = VBS = VBIAS = 14V, +/- 0.25V, VCSD = 5.0V, CLO =CHO = 1000 pF, and TA = 25°C unless otherwise specified.
Supply Characteristics
Symbol Definition
VCCUV+ VCCUVVCCUVL-
VCC supply undervoltage positive going threshold
VCC supply undervoltage negative going threshold
VCC supply softstart reset negative going
threshold
IQCCUV UVLO mode quiescent current
ICCFLT Fault-mode quiescent current
ICCLF
VCC current (low frequency)
ICCHF
VCC current (high frequency)
VCLAMP VCC zener clamp voltage
Floating Supply Characteristics
Min. Typ. Max. Units Test Conditions
11.5 12.1
12.7
10 10.5 11
— — 5.5 — 250 300 — 1.4 2.0 — 2.0 3.0 — 4.0 7.0 14.5 15.4 16.5
VCC rising from 0V
V VCC falling from 14V
VCC - VCCUV- (-2V) μA VCC = 11V
CS=8V, VCSD=0V mA VCC=14V,VCSD=5.2V
VCC=14V,VCSD=0V V ICC = 5mA
Symbol Definition
Min. Typ. Max.