Data Sheet No. PD60143-O
( )
( )
IR2127 S / IR2128 S
( ) & (PbF)
IR21271 S
CURRENT SENSING SINGLE CHANNEL DRIVER
Features
Product Summary
• Floating channel designed for bootstrap operation
Fully operational to +600V
V
600V max.
OFFSET
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)
I +/-
O
200 mA / 420 mA
V
12 - 20V
9 - 20V
• Undervoltage lockout
OUT
• 3.3V, 5V and 15V input logic compatible
• FAULT lead indicates shutdown has occured
• Output in phase with input (IR2127/IR21271)
(IR2127/IR2128) (IR21271)
V
250 mV or 1.8V
CSth
• Output out of phase with input (IR2128)
• Avaliable in Lead-Free
t
(typ.)
200 & 150 ns
on/off
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-cur-
rent in the driven power transistor and terminates the
Packages
gate drive voltage. An open drain
signal is pro-
FAULT
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.
8-Lead PDIP
8-Lead SOIC
Typical Connection
VCC
VCC
VB
HO
CS
VS
IN
FAULT
IN
FAULT
COM
VCC
IN
VCC
VB
HO
CS
VS
IR2127/IR21271
IN
(Refer to Lead Assignments for correct pin
configuration). This/These diagram(s) show
electrical connections only. Please refer to
ourApplication Notes and DesignTips for
proper circuit board layout.
FAULT
FAULT
COM
IR2128
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