IR2127C/IR2128C/IR21271C
Description
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-current in the driven
power transistor and terminates the gate drive voltage. An open drain
signal is provided to indicate that
FAULT
an over-current shutdown has occurred. 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-channel power MOSFET or IGBT in
the high side or low side configuration which operates up to 600 volts.
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. The Thermal Resistance and Power Dissipation ratings are measured under
board mounted and still air conditions.
Symbol
Definition
High Side Floating Supply Voltage
High Side Floating Offset Voltage
High Side Floating Output Voltage
Logic Supply Voltage
Min.
Max.
Units
V
-0.3
625
B
S
V
V
B
- 25
V
B
+ 0.3
V
V
V - 0.3
S
V
+ 0.3
25
HO
B
-0.3
-0.3
-0.3
V
CC
V
IN
Logic Input Voltage
V
V
+ 0.3
+ 0.3
+ 0.3
50
CC
V
FLT
FAULT Output Voltage
CC
V
CS
Current Sense Voltage
V
S
- 0.3
V
B
dV /dt
s
Allowable Offset Supply Voltage Transient
Junction Temperature
—
—
V/ns
°C
T
J
150
150
T
Storage Temperature
-55
S
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 offset rating is tested with all supplies biased at 15V differential.
S
Symbol
Definition
Min.
Max.
Units
V
High Side Floating Supply Voltage
(IR2127/IR2128)
(IR21271)
V
+ 12
V
+ 20
B
S
S
S
V
+ 9
V
+ 20
S
V
High Side Floating Offset Voltage
High Side Floating Output Voltage
Logic Supply Voltage
Note 1
600
S
V
HO
V
S
V
B
V
V
CC
10
0
20
V
IN
Logic Input Voltage
V
CC
V
FLT
FAULT Output Voltage
0
V
CC
V
Current Sense Signal Voltage
Ambient Temperature
V
V + 5
S
CS
S
T
-40
125
°C
A
Note 1: Logic operational for V of -5 to +600V. Logic state held for V of -5V to -V . (Please refer to the Design Tip
S
S
BS
DT97-3 for more details).
2
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