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Data Sheet No. PD60143-O
IR2127(S) / IR2128(S)
IR21271(S) & (PbF)
CURRENT SENSING SINGLE CHANNEL DRIVER
Features
Floating channel designed for bootstrap operation
Fully operational to +600V
Tolerant to negative transient voltage dV/dt immune
Application- specific gate drive range:
Motor Drive: 12 to 20V (IR2127/IR2128)
Automotive: 9 to 20V (IR21271)
Undervoltage lockout
3.3V, 5V and 15V input logic compatible
FAULT lead indicates shutdown has occured
Output in phase with input (IR2127/IR21271)
Output out of phase with input (IR2128)
Avaliable in Lead-Free
Description
Product Summary
VOFFSET
600V max.
IO+/-
200 mA / 420 mA
VOUT 12 - 20V
9 - 20V
(IR2127/IR2128) (IR21271)
VCSth
ton/off (typ.)
250 mV or 1.8V
200 & 150 ns
The IR2127/IR2128/IR21271(S) is a high voltage, high
speed power MOSFET and IGBT driver. Proprietary
HVIC and latch immune CMOS technologies enable
ruggedized monolithic construction. The logic input is
compatible with standard CMOS or LSTTL outputs,
down to 3.3V. The protection circuity detects over-cur-
rent in the driven power transistor and terminates the
gate drive voltage. An open drain FAULT signal is pro-
vided to indicate that an over-current shutdown has oc-
curred. The output driver features a high pulse current
buffer stage designed for minimum cross-conduction.
The floating channel can be used to drive an N-chan-
nel power MOSFET or IGBT in the high side or low
side configuration which operates up to 600 volts.
Packages
8-Lead PDIP
8-Lead SOIC
Typical Connection
V CC
IN
FAULT
V CC
IN
FAULT
COM
VB
HO
CS
VS
IR2127/IR21271
(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.
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V CC
IN
FAULT
V CC
IN
FAULT
COM
VB
HO
CS
VS
IR2128
1
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IR2127(S) / IR21271(S) / IR2128(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
Definition
Min. Max. Units
VB
VS
VHO
VCC
VIN
VFLT
VCS
dVs/dt
PD
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 @ TA +25°C
(8 Lead DIP)
(8 Lead SOIC)
-0.3
VB - 25
VS - 0.3
-0.3
-0.3
-0.3
VS - 0.3
625
VB + 0.3
VB + 0.3
25
VCC + 0.3
VCC + 0.3
VB + 0.3
50
1.0
0.625
V
V/ns
W
RthJA
Thermal Resistance, Junction to Ambient (8 Lead DIP)
(8 Lead SOIC)
125
°C/W
200
TJ Junction Temperature
TS Storage Temperature
TL Lead Temperature (Soldering, 10 seconds)
— 150
-55 150 °C
— 300
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 VS offset rating is tested with all supplies biased at 15V differential.
Symbol
VB
VS
VHO
VCC
VIN
VFLT
VCS
TA
Definition
High Side Floating Supply Voltage (IR2127/IR2128)
(IR21271)
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
Min.
VS + 12
VS + 9
Note 1
VS
10
0
0
VS
-40
Max.
VS + 20
VS + 20
600
VB
20
VCC
VCC
VS + 5
125
Units
V
°C
Note 1: Logic operational for VS of -5 to +600V. Logic state held for VS of -5V to -VBS. (Please refer to the Design Tip
DT97-3 for more details).
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IR2127(S) / IR21271(S) / IR2128(S) & (PbF)
Dynamic Electrical Characteristics
VBIAS (VCC, VBS) = 15V, CL = 1000 pF and TA = 25°C unless otherwise specified. The dynamic electrical characteristics
are measured using the test circuit shown in Figure 3.
Symbol
Definition
Min. Typ. Max. Units Test Conditions
ton Turn-On Propagation Delay
— 200 250
VS = 0V
toff Turn-Off Propagation Delay
— 150 200
VS = 600V
tr Turn-On Rise Time
— 80 130
tf Turn-Off Fall Time
— 40 65 ns
tbl Start-Up Blanking Time
500 700 900
tcs CS Shutdown Propagation Delay
— 240 360
tflt CS to FAULT Pull-Up Propagation Delay
— 340 510
Static Electrical Characteristics
VBIAS (VCC, VBS) = 15V and TA = 25°C unless otherwise specified. The VIN, VTH and IIN parameters are referenced to
COM. The VO and IO parameters are referenced to VS.
Symbol
Definition
Min. Typ. Max. Units Test Conditions
VIH
VIL
VCSTH+
Logic “1” Input Voltage
Logic “0” Input Voltage
Logic “0” Input Voltage
Logic “1” Input Voltage
CS Input Positive
Going Threshold
(IR2127/IR21271)
3.0 —
(IR2128)
V
(IR2127/IR21271)
(IR2128)
— — 0.8
VCC = 10V to 20V
(IR2127/IR2128) 180 250 320 mV
(IR21271)
— 1.8 —
V
VOH
VOL
ILK
IQBS
IQCC
IIN+
IIN-
ICS+
ICS-
VBSUV+
VBSUV-
IO+
High Level Output Voltage, VBIAS - VO
Low Level Output Voltage, VO
Offset Supply Leakage Current
Quiescent VBS Supply Current
Quiescent VCC Supply Current
Logic “1” Input Bias Current
Logic “0” Input Bias Current
“High” CS Bias Current
“High” CS Bias Current
VBS Supply Undervoltage
Positive Going Threshold
(IR2127/IR2128)
(IR21271)
VBS Supply Undervoltage
Negative Going Threshold
(IR2127/IR2128)
(IR21271)
Output High Short Circuit Pulsed Current
IO- Output Low Short Circuit Pulsed Current
— — 100 mV
— — 100
IO = 0A
IO = 0A
— — 50
— 200 400
— 60 120
— 7.0 15 µA
— — 1.0
— — 1.0
— — 1.0
8.8 10.3 11.8
6.3 7.2 8.2
7.5 9.0 10.6
6.0 6.8 7.7
V
VB = VS = 600V
VIN = 0V or 5V
VIN = 5V
VIN = 0V
VCS = 3V
VCS = 0V
200 250 —
420 500 —
VO = 0V, VIN = 5V
mA PW 10 µs
VO = 15V, VIN = 0V
PW 10 µs
Ron, FLT FAULT - Low on Resistance
— 125 —
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IR2127(S) / IR21271(S) / IR2128(S) & (PbF)
Functional Block Diagram IR2127/IR21271
VCC
IN
FAULT
COM
QR
S
UP
SHIFTERS
HV
LEVEL
SHIFT
UV
DETECT
PULSE
FILTER
PULSE
GEN
VB
RQ
R
S
DOWN
PULSE SHIFTER
FILTER
PULSE
GEN
QR
S
VB
BUFFER
HO
DELAY
-
+
VS
CS
Functional Block Diagram IR2128
VCC
5V
IN
FAULT
COM
QR
S
UP
SHIFTERS
HV
LEVEL
SHIFT
UV
DETECT
PULSE
FILTER
PULSE
GEN
VB
RQ
R
S
DOWN
PULSE SHIFTER
FILTER
PULSE
GEN
QR
S
VB
BUFFER
HO
DELAY
-
+
VS
CS
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IR2127(S) / IR21271(S) / IR2128(S) & (PbF)
Lead Definitions
Symbol
Description
VCC
IN
FAULT
COM
VB
HO
VS
CS
Logic and gate drive supply
Logic input for gate driver output (HO), in phase with HO (IR2127/IR21271)
out of phase with HO (IR2128)
Indicates over-current shutdown has occurred, negative logic
Logic ground
High side floating supply
High side gate drive output
High side floating supply return
Current sense input to current sense comparator
Lead Assignments
8 Lead PDIP
IR2127/IR21271
8 Lead SOIC
IR2127S/IR21271S
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8 Lead PDIP
IR2128
8 Lead SOIC
IR2128S
5
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