Data Sheet No. PD60017 Rev.Q
( )&(PbF)
S
IR2125
CURRENT LIMITING SINGLE CHANNEL DRIVER
Features
Product Summary
• Floating channel designed for bootstrap operation
Fully operational to +500V
V
500V max.
1A / 2A
OFFSET
Tolerant to negative transient voltage
dV/dt immune
I +/-
O
• Gate drive supply range from 12 to 18V
• Undervoltage lockout
V
OUT
12 - 18V
• Current detection and limiting loop to limit driven
power transistor current
V
CSth
230 mV
• Error lead indicates fault conditions and programs
shutdown time
t
(typ.)
150 & 150 ns
on/off
• Output in phase with input
• 2.5V, 5V and 15V input logic compatible
• Also available LEAD-Free
Packages
Description
The IR2125(S) is a high voltage, high speed power
MOSFET and IGBT driver with over-current limiting
protection circuitry. Proprietary HVIC and latch im-
mune CMOS technologies enable ruggedized mono-
lithic construction. Logic inputs are compatible with
standard CMOS or LSTTL outputs, down to 2.5V
logic. The output driver features a high pulse current
16-Lead SOIC
(Wide Body)
8-Lead PDIP
buffer stage designed for minimum driver cross-conduction. The protection circuitry detects over-current in the
driven power transistor and limits the gate drive voltage. Cycle by cycle shutdown is programmed by an external
capacitor which directly controls the time interval between detection of the over-current limiting conditions and
latched shutdown. 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
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(Refer to Lead Assignments
for correct pin configura-
tion). This/These diagram(s)
show electrical connections
only. Please refer to our
Application Notes and
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DesignTips for proper circuit
board layout.
www.irf.com
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