Data Sheet No. PD60219 rev C
IR2161(S) & (PbF)
HALOGEN CONVERTOR CONTROL IC
Features
Packages
•
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)
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
CD
DS
D1
LF
CVCC1
D2
VCC
COM
CVCC2
CSD
VZ
D3
D4
RL
CSD
CCS
RCS
CS
DCP2
DCP1
DB
Q1
R1
C1
1
8
VB
HO
VS
LO
CB
CSNUB
IR2161
AC LINE
INPUT
2
3
4
7
6
5
CLF
T1
Q2
C3
C4
R2
C2
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.
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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
V
B
V
S
V
HO
V
LO
IO
MAX
V
CSDMAX
V
CS
I
CS
I
CC
dV/dt
P
D
Rth
JA
T
J
T
S
T
L
Definition
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
CSD pin voltage
Current sense pin voltage
Current sense pin current
Supply current (Note 1)
Allowable offset voltage slew rate
Maximum power dissipation @ T
A
≤
+25°C
PD = (T
JMAX
-T
A
)/Rth
JA
Thermal resistance, junction to ambient
Junction temperature
Storage temperature
Lead temperature (soldering, 10 seconds)
(8 Lead DIP)
(8 Lead SOIC)
(8 Lead DIP)
(8 Lead SOIC)
Min.
-0.3
V
B
- 25
V
S
- 0.3
-0.3
-500
-0.3
-0.3
-5
-20
-50
—
—
—
—
-55
-55
—
Max.
625
V
B
+ 0.3
V
B
+ 0.3
V
CC
+ 0.3
500
V
CC
+ 0.3
V
CC
+ 0.3
5
20
50
1
0.625
125
200
150
150
300
Units
V
mA
V
mA
V/ns
W
°C/W
°C
Recommended Operating Conditions
For proper operation the device should be used within the recommended conditions.
Symbol
V
BS
V
BSMIN
V
S
V
CC
I
CC
C
SD
I
CS
T
J
Note 1:
Note 2:
Definition
High side floating supply voltage
Minimum required VBS voltage for proper HO functionality
Steady state high-side floating supply offset voltage
Supply voltage
Supply current
CSD pin external capacitor
Current sense pin current
Junction temperature
Min.
V
CC
- 0.7
4.3
-1
V
CCUV+
(Note 2)
47
-1
-25
Max.
V
CLAMP
—
600
V
CLAMP
10
—
1
125
Units
V
mA
nF
mA
°C
This IC contains a zener clamp structure between the chip V
CC
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 V
CLAMP
specified in the Electrical Characteristics section.
Enough current should be supplied into the V
CC
pin to keep the internal 15.6V zener clamp diode on this pin
regulating its voltage, V
CLAMP
.
2
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IR2161(
S
) & (PbF)
Electrical Characteristics
V
CC
= V
BS
= V
BIAS
= 14V, +/- 0.25V, VCSD = 5.0V, C
LO =
C
HO
= 1000 pF, and T
A
= 25°C unless otherwise specified.
Supply Characteristics
Symbol Definition
V
CCUV+
V
CCUV-
V
CCUVL-
I
QCCUV
I
CCFLT
I
CCLF
I
CCHF
V
CLAMP
V
CC
supply undervoltage positive going
threshold
V
CC
supply undervoltage negative going
threshold
V
CC
supply softstart reset negative going
threshold
UVLO mode quiescent current
Fault-mode quiescent current
VCC current (low frequency)
VCC current (high frequency)
V
CC
zener clamp voltage
Min.
11.5
10
—
—
—
—
—
14.5
Typ.
12.1
10.5
—
250
1.4
2.0
4.0
15.4
Max.
12.7
11
5.5
300
2.0
3.0
7.0
16.5
Units Test Conditions
V
CC
rising from 0V
V
V
CC
falling from 14V
V
CC
- V
CCUV-
(-2V)
μA
mA
V
V
CC
= 11V
CS=8V, VCSD=0V
VCC=14V,VCSD=5.2V
VCC=14V,VCSD=0V
I
CC
= 5mA
Floating Supply Characteristics
Symbol Definition
V
BSMIN
I
BSHF
I
BSLF
I
LEAK
Minimum V
BS
to start oscillation at HO
V
BS
high frequency supply current
V
BS
low frequency supply current
Offset supply leakage current
Min.
3.0
—
—
—
Typ.
3.6
3.0
0.8
—
Max.
4.3
—
—
50
Units Test Conditions
V
VCC=14V,VBS=14V,
mA
VCSD=0V
VCC=14V,VBS=14V,
VCSD=5.2V
μA
V
B
= V
S
= 600V
Voltage Compensation Characteristics (Run Mode)
Symbol Definition
V
CSD (min)
Min CSD voltage (in Run Mode)
V
CSD (max)
Max CSD voltage (in Run Mode)
Min.
—
—
Typ.
0
5.5
Max.
—
—
Units Test Conditions
V
V
VCS = 0V
VCS = 0.4V
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IR2161(
S
) & (PbF)
Electrical Characteristics (cont’d)
V
CC
= V
BS
= V
BIAS
= 14V, +/- 0.25V, VCSD = 5.0V, C
LO =
C
HO
= 1000 pF, and T
A
= 25°C unless otherwise specified.
Shutdown Circuit Characteristics
Symbol Definition
V
CSOL
V
CSSC
I
OL
I
SC
I
RESET
V
CSLATCH
T
CSLATCH
V
CSDOL
V
CSDSD
Overload threshold (CS PID)
CSD short circuit threshold (CS PID)
CSD overload charging current
CSD short circuit charging current
CSD shutdown reset current
Latched shutdown threshold
Latched shutdown delay
Begin fault timing
Positive going threshold for oscillator
shutdown
Negative going threshold for oscillator restart
Min.
0.47
1
6
75
0.1
Typ.
0.56
1.2
9
100
0.7
9
1
5
12
2.4
Max.
0.64
1.4
12
120
Units
V
uA
V
μsec
Test Conditions
VCS=0.8V,VCSD=7V
VCS=1.5V,VCSD=7V
VCSD=14V
VCS>VCSLATCH
VCS>VCSOL
VCS > VCSOL
Min.
Min.
Max.
Max.
V
V
CSDRS
Thermal Shutdown Characteristics
Symbol Definition
T
SD
Latched over temperature limit
Typ.
135
Units
o
Test Conditions
C
Oscillator Characteristics
Symbol Definition
f (min)
f(max)
D
DT
LO(max)
DT
HO(max)
Minimum oscillator frequency
Maximum oscillator frequency in RUN mode
Oscillator duty cycle
Maximum LO output deadtime
(run mode default)
Maximum HO output deadtime
(run mode default)
Typ.
34
70
50
1.0
1.0
Units Test Conditions
kHz
%
μsec
no reset from ADT
VCSD = 5.3V
VCSD = 0V
Adaptive Dead-Time System Characteristics
Symbol Definition
DT
LO(min)
DT
HO(min)
Minimum LO output deadtime
Minimum HO output deadtime
Min.
Typ.
700
700
Max.
Units
nsec
Test Conditions
Minimum propagation
delay from ADT to
output drivers
4
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IR2161(
S
) & (PbF)
Electrical Characteristics (cont.)
V
CC
= V
BS
= V
BIAS
= 14V, +/- 0.25V, VCSD = 5.0V, C
LO =
C
HO
= 1000 pF, and T
A
= 25°C unless otherwise specified.
Soft Start Characteristics
Symbol Definition
I
SS
f
SS
Soft start CSD charge current
Soft start frequency
Min.
Min.
—
—
—
—
—
—
—
—
Typ.
0.5
115
Max.
Max.
—
—
—
—
250
140
—
—
Units
mA
kHz
Test Conditions
VCC>VCCUV+
Gate Driver Output Characteristics
Symbol Definition
V
LO=LOW
V
HO=LOW
V
LO=HIGH
V
HO=HIGH
t
RISE
t
FALL
IO+
IO-
LO voltage when LO is low
HO voltage when HO is low
LO voltage when LO is high
HO voltage when HO is high
Turn-on rise time
Turn-off fall time
HO, LO source current
HO, LO sink current
Typ.
COM
COM
VCC
VCC
110
60
200
300
Units
Test Conditions
ns
mA
C
HO
=C
LO
=1nF
Lead Definitions
Symbol
V
CC
COM
CSD
CS
LO
V
S
HO
V
B
Lead Assignments
VCC
COM
CSD
CS
Description
Supply voltage
IC power and signal ground
Shutdown timing and compensation capacitor
Current sensing input
Low-side gate driver output
High-side floating return
High side gate driver output
High side gate driver floating supply
1
8
VB
IR2161
2
3
4
7
HO
6
5
VS
LO
* Recommended value for CSD is 100nF (all performance data relates to this value)
NOTE: The recommended value for RL is 1K Ohm and CCS is 1nF.
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