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)
Product Summary
V
OFFSET
I
O
+/-
V
OUT
V
CSth
t
on/off
(typ.)
600V max.
200 mA / 420 mA
(IR2127/IR2128)
Description
•
•
•
•
•
•
Avaliable in Lead-Free
12 - 20V
(IR21271)
9 - 20V
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
COM
V
B
HO
CS
V
S
V
CC
IN
FAULT
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.
V
CC
IN
FAULT
V
CC
IN
FAULT
COM
V
B
HO
CS
V
S
IR2128
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