IR2125 Datasheet, PDF (1/16 Pages) International Rectifier – CURRENT LIMITING SINGLE CHANNEL DRIVER

Previous Datasheet
Index
Next Data Sheet
Data Sheet No. PD-6.017D
IR2125
CURRENT LIMITING SINGLE CHANNEL DRIVER
Features
n Floating channel designed for bootstrap operation
Fully operational to +500V
Tolerant to negative transient voltage
dV/dt immune
n Gate drive supply range from 12 to 18V
n Undervoltage lockout
n Current detection and limiting loop to limit driven
power transistor current
n Error lead indicates fault conditions and programs
shutdown time
n Output in phase with input
Product Summary
V_OFFSET
500V max.
I_O+/-
1A / 2A
V_OUT
12 - 18V
V_CSth
230 mV
t_on/off (typ.) 150 & 150 ns
Description
The IR2125 is a high voltage, high speed power
MOSFET and IGBT driver with over-current limit-
ing protection circuitry. Proprietary HVIC and latch
immune CMOS technologies enable ruggedized
monolithic construction. Logic inputs are compat-
ible with standard CMOS or LSTTL outputs. The
output driver features a high pulse current buffer
stage designed for minimum driver cross-conduc-
tion. The protection circuitry detects over-current
in the driven power transistor and limits the gate
drive voltage. Cycle by cycle shutdown is pro-
grammed by an external capacitor which directly
controls the time interval between detection of the
over-current limiting conditions and latched shut-
Package
down. The floating channel can be used to drive an
N-channel power MOSFET or IGBT in the high or
low side configuration which operates up to 500
volts.
Typical Connection
up to 500V
V_CC
V_CC
V_B
IN
IN
OUT
ERR
CS
COM
V_S
TO
LOAD
To Order
CONTROL INTEGRATED CIRCUIT DESIGNERS’ MANUAL B-107