IR2172 查看數據表（PDF） - International Rectifier

零件编号

产品描述 (功能)

比赛名单

IR2172

LINEAR CURRENT SENSING IC

International Rectifier 

Data Sheet No. PD60192 revG

IMPORTANT NOTICE:

IR2171/IR2172 (S)

For new designs we recommend IR’s new products

IR2175, IR2177, IR21771, IR2277 or IR22771.

LINEAR CURRENT SENSING IC

Features

• Floating channel up to +600V

• Monolithic integration

• Linear current feedback through shunt resistor

• Direct digital PWM output for easy interface

• Low IQBS allows the boot strap power supply

• Independent fast overcurrent trip signal

• High common mode noise immunity

• Input overvoltage protection for IGBT short circuit

condition

• Open Drain outputs

Product Summary

VOFFSET

IQBS

Vin

Gain temp.drift

fo

Overcurrent trip

signal delay (IR2172)

600Vmax

1mA

+/-260mVmax

20ppm/oC (typ.)

40kHz (typ.)

1.5usec (typ)

Description

IR2171/IR2172 are monolithic current sensing IC

designed for motor drive applications. It senses the

motor phase current through an external shunt resistor,

converts from analog to digital signal, and transfers the

signal to the low side. IR’s proprietary high voltage iso-

lation technology is implemented to enable the high

bandwidth signal processing. The output format is dis-

crete PWM to eliminate need for the A/D input interface

for the IR2172. The dedicated overcurrent trip (OC) sig-

nal facilitates IGBT short circuit protection. The open-

drain outputs make easy for any interface from 3.3V to

15V.

Overcurrent trip level

Packages

8-Lead SOIC

+/-260mV (typ.)

8-Lead PDIP

Block Diagram

Up to 600V

15V

PWM Output

GND

Overcurrent

VCC

V+

PO IR2171/ V-

COM IR2172 VB

NC (OC 2172) VS

To Motor Phase

(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.

Share Link: