IR2155 Datasheet, PDF (1/6 Pages) International Rectifier – SELF-OSCILLATING HALF-BRIDGE DRIVER

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Data Sheet No. PD-6.029G
IR2155
SELF-OSCILLATING HALF-BRIDGE DRIVER
Features
Product Summary
n Floating channel designed for bootstrap operation
Fully operational to +600V
Tolerant to negative transient voltage
dV/dt immune
n Undervoltage lockout
n Programmable oscillator frequency
f=
1
1.4 × (R_T + 150Ω) × C_T
n Matched propagation delay for both channels
n Micropower supply startup current of 125 µA typ.
n Low side output in phase with R_T
V_OFFSET
600V max.
Duty Cycle
50%
I_O+/-
210 mA / 420 mA
V_OUT
10 - 20V
Deadtime (typ.)
1.2 µs
Package
Description
The IR2155 is a high voltage, high speed, self-os-
cillating power MOSFET and IGBT driver with both high
and low side referenced output channels. Proprietary
HVIC and latch immune CMOS technologies enable
ruggedized monolithic construction.The front end fea-
tures a programmable oscillator which is similar to the
555 timer. The output drivers feature a high pulse cur-
rent buffer stage and an internal 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 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
HO
C_T
V_S
COM
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TO
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To Order
CONTROL INTEGRATED CIRCUIT DESIGNERS’ MANUAL
B-199