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Data Sheet No. PD60029 revJ
IR2155&(PbF)
(NOTE: For new designs, we recommend IR’s new products
IR2153 and IR21531)
SELF-OSCILLATING HALF-BRIDGE DRIVER
Features
Product Summary
Floating channel designed for bootstrap operation
Fully operational to +600V
Tolerant to negative transient voltage
V OFFSET
600V max.
f =
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dV/dt immune
Undervoltage lockout
Programmable oscillator frequency
1
1.4 × (R T + 150 ? ) × C T
Matched propagation delay for both channels
Micropower supply startup current of 125 μ A typ.
Low side output in phase with R T
Available in Lead-Free
Duty Cycle
I O +/-
V OUT
Deadtime (typ.)
Package
50%
210 mA / 420 mA
10 - 20V
1.2 μ s
Description
The IR2155 is a high voltage, high speed, self-
oscillating power MOSFET and IGBT driver with both
high and low side referenced output channels. Pro-
prietary HVIC and latch immune CMOS technolo-
gies enable ruggedized monolithic construction.
The front end features a programmable oscillator
which is similar to the 555 timer. The output drivers
feature a high pulse current buffer stage and an in-
ternal deadtime designed for minimum driver cross-
conduction. Propagation delays for the two
channels are matched to simplify use in 50% duty
cycle applications. The floating channel can be
used to drive an N-channel power
8 Lead PDIP
MOSFET or IGBT in the high side configuration that
operates off a high voltage rail up to 600 volts.
Typical Connection
up to 600V
V CC
V B
R T
C T
COM
HO
V S
LO
TO
LOAD
(Refer to Lead Assignment diagram for correct pin configuration)
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