IR2121 Ver la hoja de datos (PDF) - Infineon Technologies

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Fabricante

IR2121

CURRENT LIMITING LOW SIDE DRIVER

Infineon Technologies 

Data Sheet No. PD60018-M

IR2121 & (PbF)

CURRENT LIMITING LOW SIDE DRIVER

Features

Product Summary

• Gate drive supply range from 12 to 18V

• Undervoltage lockout

• Current detection and limiting loop to limit driven

power transistor current

• Error lead indicates fault conditions and programs

shutdown time

• Output in phase with input

• 2.5V, 5V and 15V input logic compatible

• Also available LEAD-FREE

Description

VOFFSET

IO+/-

VOUT

VCSth

ton/off (typ.)

5V max.

1A / 2A

12 - 18V

230 mV

150 & 150 ns

The IR2121 is a high speed power MOSFET and Package

IGBT driver with over-current limiting protection cir-

cuitry. Latch immune CMOS technology enables rug-

gedized monolithic construction. Logic inputs are

compatible with standard CMOS or LSTTL outputs,

down to 2.5V logic. The output driver features a

high pulse current buffer stage designed for mini-

mum cross-conduction. The protection circuitry de-

tects over-current in the driven power transistor and

limits the gate drive voltage. Cycle-by-cycle shut-

down is programmed by an external capacitor which

8-Lead PDIP

directly controls the time interval between detection of the over-current limiting condition and latched shut-

down. The output can be used to drive an N-channel power MOSFET or IGBT in the low side configuration.

Typical Connection

TO

LOAD

VCC

IN

(Refer to Lead

Assignments for correct

pin configuration). This/

These diagram(s) show

electrical connections

only. Please refer to our

Application Notes and

DesignTips for proper

circuit board layout.

VCC

IN

ERR

COM

VCC

OUT

CS

VS

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