2108-(4)_P.p65
Typical Connection
HALF-BRIDGE DRIVER
Features
Floating channel designed for bootstrap operation
Fully operational to +600V
Tolerant to negative transient voltage
dV/dt immune
Gate drive supply range from 10 to 20V
Undervoltage lockout for both channels
3.3V, 5V and 15V input logic compatible
Cross-conduction prevention logic
Matched propagation delay for both channels
High side output in phase with HIN input
Low side output out of phase with LIN
input
Logic and power ground +/- 5V offset.
Internal 540ns dead-time, and
programmable up to 5us with one
external R
DT
resistor (IR21084)
Lower di/dt gate driver for better
noise immunity
IR21084
IR2108
V
CC
V
B
V
S
HO
LO
COM
HIN
LIN
LIN
HIN
up to 600V
TO
LOAD
V
CC
HIN
up to 600V
TO
LOAD
V
CC
V
B
V
S
HO
LO
COM
HIN
DT
V
SS
LIN
V
CC
LIN
V
SS
R
DT
Data Sheet No. PD60161-P
IR2108
(
4
)
(S)
www.irf.com
1
(Refer to Lead Assignments for correct pin
configuration). This/These diagram(s) show
electrical connections only. Please refer to our
Application Notes and DesignTips for proper
circuit board layout.
Packages
14-Lead PDIP
IR21084
8-Lead SOIC
IR2108S
8-Lead PDIP
IR2108
14-Lead SOIC
IR21084S
Description
The IR2108(4)(S) are high voltage, high speed
power MOSFET and IGBT drivers with depen-
dent high and low side referenced output
channels. Proprietary HVIC and latch immune
CMOS technologies enable ruggedized monolithic construction. The logic input is compatible with standard CMOS
or LSTTL output, down to 3.3V logic. The output drivers feature a high pulse current buffer stage designed for
minimum driver cross-conduction. The floating channel can be used to drive an N-channel power MOSFET or
IGBT in the high side configuration which operates up to 600 volts.
Part
Input
logic
Cross-
conduction
prevention
logic
Dead-Time
Ground Pins
2106/2301
COM
21064
HIN/LIN
no
none
VSS/COM
2108
Internal 540ns
COM
21084
HIN/LIN
yes
Programmable 0.54~5
s
VSS/COM
2109/2302
Internal 540ns
COM
21094
IN/SD
yes
Programmable 0.54~5
s
VSS/COM
2106/2301//2108//2109/2302/2304 Feature Comparison
2304
HIN/LIN
yes
Internal 100ns
COM
2
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IR2108
(
4
)
(S)
Symbol
Definition
Min.
Max.
Units
V
B
High side floating absolute voltage
-0.3
625
V
S
High side floating supply offset voltage
V
B
- 25
V
B
+ 0.3
V
HO
High side floating output voltage
V
S
- 0.3
V
B
+ 0.3
V
CC
Low side and logic fixed supply voltage
-0.3
25
V
LO
Low side output voltage
-0.3
V
CC
+ 0.3
DT
Programmable dead-time pin voltage (IR21084 only)
V
SS
- 0.3
V
CC
+ 0.3
V
IN
Logic input voltage (HIN &
LIN
)
V
SS
- 0.3
V
CC
+ 0.3
V
SS
Logic ground (IR21084 only)
V
CC
- 25
V
CC
+ 0.3
dV
S
/dt
Allowable offset supply voltage transient
--
50
V/ns
P
D
Package power dissipation @ T
A
+25
C
(8 lead PDIP)
--
1.0
(8 lead SOIC)
--
0.625
(14 lead PDIP)
--
1.6
(14 lead SOIC)
--
1.0
Rth
JA
Thermal resistance, junction to ambient
(8 lead PDIP)
--
125
(8 lead SOIC)
--
200
(14 lead PDIP)
--
75
(14 lead SOIC)
--
120
T
J
Junction temperature
--
150
T
S
Storage temperature
-50
150
T
L
Lead temperature (soldering, 10 seconds)
--
300
Absolute Maximum Ratings
Absolute maximum ratings indicate sustained limits beyond which damage to the device may occur. All voltage param-
eters are absolute voltages referenced to COM. The thermal resistance and power dissipation ratings are measured
under board mounted and still air conditions.
Note 1: Logic operational for V
S
of -5 to +600V. Logic state held for V
S
of -5V to -V
BS
. (Please refer to the Design Tip
DT97-3 for more details).
V
Recommended Operating Conditions
The Input/Output logic timing diagram is shown in figure 1. For proper operation the device should be used within the
recommended conditions. The V
S
and V
SS
offset rating are tested with all supplies biased at 15V differential.
C
C/W
W
VB
High side floating supply absolute voltage
V
S
+ 10
V
S
+ 20
V
S
High side floating supply offset voltage
Note 1
600
V
HO
High side floating output voltage
V
S
V
B
V
CC
Low side and logic fixed supply voltage
10
20
V
LO
Low side output voltage
0
V
CC
V
IN
Logic input voltage
IR2108 COM V
CC
IR21084 V
SS
V
CC
DT
Programmable dead-time pin voltage (IR21084 only)
V
SS
V
CC
V
SS
Logic ground (IR21084 only)
-5
5
T
A
Ambient temperature
-40
125
V
Symbol
Definition
Min.
Max.
Units
C
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3
IR2108
(
4
)
(S)
Dynamic Electrical Characteristics
V
BIAS
(V
CC
, V
BS
) = 15V, V
SS
= COM, C
L
= 1000 pF, T
A
= 25
C, DT = VSS unless otherwise specified.
Static Electrical Characteristics
V
BIAS
(V
CC
, V
BS
) = 15V, V
SS
= COM, DT= V
SS
and T
A
= 25
C unless otherwise specified. The V
IL
, V
IH
and I
IN
parameters are referenced to V
SS
/COM and are applicable to the respective input leads: HIN and LIN. The V
O
, I
O
and Ron
parameters are referenced to COM and are applicable to the respective output leads: HO and LO.
Symbol
Definition
Min. Typ. Max. Units Test Conditions
V
IH
Logic "1" input voltage for HIN & logic "0" for
LIN
2.9
--
--
V
CC
= 10V to 20V
V
IL
Logic "0" input voltage for HIN & logic "1" for
LIN
--
--
0.8
V
CC
= 10V to 20V
V
OH
High level output voltage, V
BIAS
- V
O
--
0.8
1.4
I
O
= 20 mA
V
OL
Low level output voltage, V
O
--
0.3
0.6
I
O
= 20 mA
I
LK
Offset supply leakage current
--
--
50
V
B
= V
S
= 600V
I
QBS
Quiescent V
BS
supply current
20
75
130
V
IN
= 0V or 5V
I
QCC
Quiescent V
CC
supply current
0.4
1.0
1.6
mA
V
IN
= 0V or 5V
RDT=0
I
IN+
Logic "1" input bias current
--
5
20
HIN = 5V,
LIN
= 0V
I
IN-
Logic "0" input bias current
--
--
2
HIN = 0V,
LIN
= 5V
V
CCUV+
V
CC
and V
BS
supply undervoltage positive going
8.0
8.9
9.8
V
BSUV+
threshold
V
CCUV-
V
CC
and V
BS
supply undervoltage negative going
7.4
8.2
9.0
V
BSUV-
threshold
V
CCUVH
Hysteresis
0.3
0.7
--
V
BSUVH
I
O+
Output high short circuit pulsed current
120
200
--
V
O
= 0V,
PW
10
s
I
O-
Output low short circuit pulsed current
250
350
--
V
O
= 15V,
PW
10
s
V
A
A
V
mA
Symbol
Definition
Min. Typ.
Max. Units Test Conditions
ton
Turn-on propagation delay
--
220
300
VS = 0V
toff
Turn-off propagation delay
--
200
280
V
S
= 0V or 600V
MT
Delay matching
|
ton - toff
|
--
0
30
tr
Turn-on rise time
--
150
220
V
S
= 0V
tf
Turn-off fall time
--
50
80
V
S
= 0V
DT
Deadtime: LO turn-off to HO turn-on(DT
LO-HO) &
400
540
680
RDT= 0
HO turn-off to LO turn-on (DT
HO-LO)
4
5
6
usec
RDT = 200k
(IR21084)
MDT
Deadtime matching =
|
DT
LO-HO
- DT
HO-LO
|
--
0
60
RDT=0
--
0
600
RDT = 200k
(IR21084)
nsec
nsec
4
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IR2108
(
4
)
(S)
Functional Block Diagram
21084
LIN
+5V
UV
DETECT
DELAY
COM
LO
VCC
HIN
DT
VSS
VS
HO
VB
PULSE
FILTER
HV
LEVEL
SHIFTER
R
R
S
Q
UV
DETECT
DEADTIME &
SHOOT-THROUGH
PREVENTION
PULSE
GENERATOR
VSS/COM
LEVEL
SHIFT
VSS/COM
LEVEL
SHIFT
2108
LIN
+5V
UV
DETECT
DELAY
COM
LO
VCC
HIN
DT
VSS
VS
HO
VB
PULSE
FILTER
HV
LEVEL
SHIFTER
R
R
S
Q
UV
DETECT
DEADTIME &
SHOOT-THROUGH
PREVENTION
PULSE
GENERATOR
VSS/COM
LEVEL
SHIFT
VSS/COM
LEVEL
SHIFT
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5
IR2108
(
4
)
(S)
14 Lead PDIP
14 Lead SOIC
IR21084
IR21084S
Lead Assignments
8 Lead PDIP
8 Lead SOIC
1
2
3
4
8
7
6
5
VCC
HIN
LIN
COM
VB
HO
VS
LO
1
2
3
4
8
7
6
5
VCC
HIN
LIN
COM
VB
HO
VS
LO
1
2
3
4
5
6
7
1
4
13
12
11
10
9
8
VCC
HIN
LIN
DT
VSS
COM
LO
VB
HO
VS
1
2
3
4
5
6
7
1
4
13
12
11
10
9
8
VCC
HIN
LIN
DT
VSS
COM
LO
VB
HO
VS
Lead Definitions
Symbol Description
HIN
Logic input for high side gate driver output (HO), in phase (referenced to COM for IR2108 and
VSS for IR21084)
Logic input for low side gate driver output (LO), out of phase (referenced to COM for IR2108
and VSS for IR21084)
DT
Programmable dead-time lead, referenced to VSS. (IR21084 only)
VSS
Logic Ground (21084 only)
V
B
High side floating supply
HO
High side gate driver output
V
S
High side floating supply return
V
CC
Low side and logic fixed supply
LO
Low side gate driver output
COM
Low side return
LIN
IR2108
IR2108S
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