The IRS2128(S)PBF and IRS21281(S)PBF are not recommended for new designs. For new designs, we recommend IRS2127(S)PBF for IRS2128(S)PBF and IRS21271(S)PBF for IRS21281(S)PBF
Data Sheet No. PD60299
IRS212(7, 71, 8, 81)(S)PbF
CURRENT SENSING SINGLE CHANNEL DRIVER
Features
•
Floating channel designed for bootstrap operation
•
•
•
•
•
•
•
Fully operational to +600 V
Tolerant to negative transient voltage dV/dt immune
tion circuity detects over-current in the driven power
transistor and terminates the gate drive voltage. An
8-Lead PDIP
8-Lead SOIC
open drain FAULT signal is provided to indicate that
an over-current shutdown has occurred. The output
driver features a high pulse current buffer stage designed for minimum cross-conduction. The floating chan-
nel can be used to drive an N-channel power MOSFET or IGBT in the high-side or low-side configuration which
operates up to 600 V.
Typical Connection
Description
V
CC
IN
FAULT
V
CC
IN
FAULT
COM
V
B
HO
CS
V
S
IRS2127/IRS21271
(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.
V
CC
IN
FAULT
V
CC
IN
FAULT
COM
V
B
HO
CS
V
S
IRS2128/IRS21281
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1
The IRS2128(S)PBF and IRS21281(S)PBF are not recommended for new designs. For new designs, we recommend IRS2127(S)PBF for IRS2128(S)PBF and IRS21271(S)PBF for IRS21281(S)PBF
IRS212(7, 71, 8, 81)(S)PbF
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.
Symbol
V
B
V
S
V
HO
V
CC
V
IN
V
FLT
V
CS
dV
s
/dt
P
D
Rth
JA
T
J
T
S
T
L
Definition
High-side floating supply voltage
High-side floating offset voltage
High-side floating output voltage
Logic supply voltage
Logic input voltage
FAULT output voltage
Current sense voltage
Allowable offset supply voltage transient
Package power dissipation @ T
A
≤
+25 °C
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
-0.3
-0.3
V
S
- 0.3
—
—
—
—
—
—
-55
—
Max.
625
V
B
+ 0.3
V
B
+ 0.3
25
V
CC
+ 0.3
V
CC
+ 0.3
V
B
+ 0.3
50
1.0
0.625
125
200
150
150
300
Units
V
V/ns
W
°C/W
°C
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
offset rating is tested with all supplies biased at 15 V differential.
Symbol
V
B
V
S
V
HO
V
CC
V
IN
V
FLT
V
CS
T
A
Definition
High-side floating supply voltage
High-side floating offset voltage
High-side floating output voltage
Logic supply voltage
Logic input voltage
FAULT output voltage
Current sense signal voltage
Ambient temperature
(IRS2127/IRS2128)
(IRS21271/IRS21281)
Min.
V
S
+ 12
V
S
+ 9
Note 1
V
S
10
0
0
V
S
-40
Max.
V
S
+ 20
V
S
+ 20
600
V
B
20
V
CC
V
CC
V
S
+ 5
125
Units
V
°C
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).
www.irf.com
2
The IRS2128(S)PBF and IRS21281(S)PBF are not recommended for new designs. For new designs, we recommend IRS2127(S)PBF for IRS2128(S)PBF and IRS21271(S)PBF for IRS21281(S)PBF
IRS212(7, 71, 8, 81)(S)PbF
Dynamic Electrical Characteristics
V
BIAS
(V
CC
, V
BS
) = 15 V, C
L
= 1000 pF and T
A
= 25 °C unless otherwise specified. The dynamic electrical characteristics
are measured using the test circuit shown in Fig. 3.
Symbol
t
on
t
off
t
r
t
f
t
bl
t
cs
t
flt
Definition
Turn-on propagation delay
Turn-off propagation delay
Turn-on rise time
Turn-off fall time
Start-up blanking time
CS shutdown propagation delay
CS to FAULT pull-up propagation delay
Min.
—
—
—
—
550
—
—
Typ. Max. Units Test Conditions
150
150
80
40
750
65
270
200
200
130
65
950
360
510
ns
V
S
= 0 V
V
S
= 600 V
Static Electrical Characteristics
V
BIAS
(V
CC
, V
BS
) = 15 V and T
A
= 25 °C unless otherwise specified. The V
IN
, V
TH,
and I
IN
parameters are referenced to
COM. The V
O
and I
O
parameters are referenced to V
S
.
Symbol
V
IH
V
IL
V
CSTH+
V
OH
V
OL
I
LK
I
QBS
I
QCC
I
IN+
I
IN-
I
CS+
I
CS-
V
BSUV+
V
BSUV-
I
O+
I
O-
Ron,
FLT
Definition
Logic “1” input voltage
Logic “0” input voltage
Logic “0” input voltage
Logic “1” input voltage
CS input positive
going threshold
(IRS2127/IRS21271)
(IRS2128/IRS21281)
(IRS2127/IRS21271)
(IRS2128/IRS21281)
(IRS2127/IRS2128)
(IRS21271/IRS21281)
Min.
2.5
—
180
1.5
—
—
—
—
—
—
—
—
—
(IRS2127/IRS2128)
(IRS21271/IRS21281)
(IRS2127/IRS2128)
(IRS21271/IRS21281)
8.8
6.3
7.5
6.0
200
420
—
Typ. Max. Units Test Conditions
—
—
250
1.8
0.05
0.02
—
300
60
7.0
—
—
—
10.3
7.2
9.0
6.8
290
600
125
—
V
0.8
320
2.1
0.2
0.1
50
800
120
15
5.0
5.0
5.0
11.8
8.2
10.6
7.7
—
mA
—
—
Ω
V
O
= 0 V, V
IN
= 5 V
PW
≤
10 µs
V
O
= 15 V, V
IN
= 0 V
PW
≤
10 µs
µA
V
I
O
= 2 mA
V
B
= V
S
= 600 V
V
IN
= 0 V or 5 V
V
IN
= 5 V
V
IN
= 0 V
V
CS
= 3 V
V
CS
= 0 V
mV
V
CC
= 10 V to 20 V
High level output voltage, V
BIAS
- V
O
Low level output voltage, V
O
Offset supply leakage current
Quiescent V
BS
supply current
Quiescent V
CC
supply current
Logic “1” input bias current
Logic “0” input bias current
“High” CS bias current
“High” CS bias current
V
BS
supply undervoltage
positive going threshold
V
BS
supply undervoltage
negative going threshold
V
Output high short circuit pulsed current
Output low short circuit pulsed current
FAULT - low on resistance
www.irf.com
3
The IRS2128(S)PBF and IRS21281(S)PBF are not recommended for new designs. For new designs, we recommend IRS2127(S)PBF for IRS2128(S)PBF and IRS21271(S)PBF for IRS21281(S)PBF
IRS212(7, 71, 8, 81)(S)PbF
Functional Block Diagram IRS2127/IRS21271
V
CC
UV
DETECT
UP
SHIFTERS
IN
PULSE
GEN
V
B
DELAY
FAULT
PULSE
FILTER
DOWN
SHIFTER
PULSE
GEN
Q
R
S
-
+
CS
V
S
HV
LEVEL
SHIFT
V
B
R
R
S
Q
BUFFER
PULSE
FILTER
HO
Q
R
S
COM
Functional Block Diagram IRS2128/IRS21281
V
B
5V
UP
SHIFTERS
IN
PULSE
GEN
V
B
DELAY
FAULT
PULSE
FILTER
DOW N
SHIFTER
PULSE
GEN
Q
R
S
-
+
CS
V
S
UV
DETECT
HV
LEVEL
SHIFT
V
CC
R
R
S
Q
BUFFER
PULSE
FILTER
HO
Q
R
S
COM
www.irf.com
4
The IRS2128(S)PBF and IRS21281(S)PBF are not recommended for new designs. For new designs, we recommend IRS2127(S)PBF for IRS2128(S)PBF and IRS21271(S)PBF for IRS21281(S)PBF
IRS212(7, 71, 8, 81)(S)PbF
Lead Definitions
Symbol
V
CC
IN
FAULT
Description
Logic and gate drive supply
Logic input for gate driver output (HO), in phase with HO (IRS2127/IRS21271)
out of phase with HO (IRS2128/IRS21281)
Indicates over-current shutdown has occurred, negative logic
