IRS2108-IRS21084 (S)PbF
Typical Connection
HALF-BRIDGE DRIVER
IRS21084
IRS2108
V
CC
V
B
V
S
HO
LO
COM
HIN
LIN
LIN
HIN
up to 600 V
TO
LOAD
V
CC
HIN
up to 600 V
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. PD60260
IRS2108
/
IRS21084(S)PbF
www.irf.com
1
(Refer to Lead Assignments for correct pin
configuration). These diagrams show
electrical connections only. Please refer to
our Application Notes and DesignTips for
proper circuit board layout.
Packages
Description
The IRS2108/IRS21084 are high volt-
age, high speed power MOSFET and
IGBT drivers with dependent 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 3.3 V logic. The
output drivers feature a high pulse cur-
rent 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 V.
Features
Floating channel designed for bootstrap operation
Fully operational to +600 V
Tolerant to negative transient voltage, dV/dt
immune
Gate drive supply range from 10 V to 20 V
Undervoltage lockout for both channels
3.3 V, 5 V, and 15 V 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 +/- 5 V offset
Internal 540 ns deadtime, and programmable up
to 5
s with one external R
DT
resistor (IRS21084)
Lower di/dt gate driver for better noise immunity
Part
Input
logic
Cross-
conduction
prevention
logic
Deadtime
(ns)
Ground Pins
Ton/Toff
(ns)
2106/2301
COM
21064
HIN/LIN
no
none
V
SS
/COM
220/200
2108
Internal 540
COM
21084
HIN/LIN
yes
Programmable 540 - 5000
V
SS
/COM
220/200
2109/2302
Internal 540
COM
21094
IN/SD
yes
Programmable 540 - 5000
V
SS
/COM
750/200
Feature Comparison
2304
HIN/LIN
yes
Internal 100
COM
160/140
8-Lead PDIP
8-Lead SOIC
14-Lead SOIC
14-Lead PDIP
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2
IRS2108/IRS21084(S)PbF
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 deadtime pin voltage (IRS21084 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 (IRS21084 only)
V
CC
- 25
V
CC
+ 0.3
dV
S
/dt
Allowable offset supply voltage transient
--
50
V/ns
(8 lead PDIP)
--
1.0
(8 lead SOIC)
--
0.625
P
D
Package power dissipation @ T
A
+25
o
C
(14 lead PDIP)
--
1.6
(14 lead SOIC)
--
1.0
(8 lead PDIP)
--
125
(8 lead SOIC)
--
200
Rth
JA
Thermal resistance, junction to ambient
(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 V to +600 V. Logic state held for V
S
of -5 V 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 Fig. 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 a 15 V 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
IRS2108 COM V
CC
IRS21084 V
SS
V
CC
DT
Programmable deadtime pin voltage (IRS21084 on
ly) V
S
V
CC
V
SS
Logic ground (IRS21084 only)
-5
5
T
A
Ambient temperature
-40
125
C
V
Symbol
Definition
Min.
Max.
Units
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3
IRS2108/IRS21084(S)PbF
Dynamic Electrical Characteristics
V
BIAS
(V
CC
, V
BS
) = 15 V, V
SS
= COM, C
L
= 1000 pF, T
A
= 25
C, DT = V
SS
unless otherwise specified.
Static Electrical Characteristics
V
BIAS
(V
CC
, V
BS
) = 15 V, 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
2.5
--
--
V
IL
Logic "0" input voltage for HIN & logic "1" for
LIN
--
--
0.8
V
OH
High level output voltage, V
BIAS
- V
O
--
0.05
0.2
V
OL
Low level output voltage, V
O
--
0.02
0.1
I
LK
Offset supply leakage current
--
--
50
V
B
= V
S
= 600 V
I
QBS
Quiescent V
BS
supply current
20
75
130
V
IN
= 0 V or 5 V
I
QCC
Quiescent V
CC
supply current
0.4
1.0
1.6
mA
V
IN
= 0 V or 5 V
RDT=0
I
IN+
Logic "1" input bias current
--
5
20
HIN = 5 V,
LIN
= 0 V
I
IN-
Logic "0" input bias current
--
--
2
HIN = 0 V,
LIN
= 5 V
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
290
--
V
O
= 0 V,
PW
10
s
I
O-
Output low short circuit pulsed current
250
600
--
V
O
= 15 V,
PW
10
s
V
A
A
V
mA
Symbol
Definition
Min. Typ.
Max. Units Test Conditions
ton
Turn-on propagation delay
--
220
300
VS = 0 V
toff
Turn-off propagation delay
--
200
280
V
S
= 0 V or 600 V
MT
Delay matching
|
ton - toff
|
--
0
30
tr
Turn-on rise time
--
100
220
tf
Turn-off fall time
--
35
80
DT
Deadtime: LO turn-off to HO turn-on(DT
LO-HO
)
&
400 540
680
R
DT
= 0
HO turn-off to LO turn-on (DT
HO-LO
)
4
5
6
s
R
DT
= 200 k
(IR21084)
MDT
Deadtime matching =
|
DT
LO-HO
- DT
HO-LO
|
--
0
60
R
DT
=0
--
0
600
R
DT
= 200 k
(IR21084)
ns
ns
V
S
= 0 V
V
CC
= 10 V to 20 V
I
O
= 2 mA
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4
IRS2108/IRS21084(S)PbF
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
IRS2108/IRS21084(S)PbF
14 Lead PDIP
14 Lead SOIC
IRS21084PbF
IRS21084SPbF
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 IRS2108
and VSS for IRS21084)
Logic input for low side gate driver output (LO), out of phase (referenced to COM for IRS2108
and VSS for IRS21084)
DT
Programmable dead-time lead, referenced to VSS (IR21084 only)
VSS
Logic ground (IRS21084 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
IRS2108PbF
IRS2108SPbF
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