IR2171 Datasheet

IC型號(hào)：
IR2171
PDF描述：
LINEAR CURRENT SENSING IC
文件大?。?/label>
151.20KB
PDF頁(yè)數(shù)：
7頁(yè)
芯片廠家：
IRF

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ADVANCE INFORMATION

Data Sheet No. PD60175-C

IR2171

LINEAR CURRENT SENSING IC

Features

鈥?/div>

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

High Common Mode Noise Immunity

Input overvoltage Protection for IGBT short circuit

condition

Product Summary

OFFSET

QBS

Gain temp. drift

600V

1mA

+/-260mVmax

20ppm/

C(typ.)

40kHz (typ.)

鈥?/div>

Open Drain output

Descriptions

IR2171 is the linear current sensing IC designed for

motor drive applications. It senses the motor phase

current through an extenal shunt resistor, converts

from analog to digital signal, and transfers the signal

to the low side. IR鈥檚 proprietary high voltage isolation

technology is implemented to enable the high band-

width signal processing. The output format is discrete

PWM at 40kHz to eliminate need for the A/D input

interface. It allows direct interface to uP via simple

counter based measurement. The independently pow-

ered output enables easy interface to the opto cou-

pler device for galvanic isolation if needed.

Packages

8 Lead SOIC

8 Lead PDIP

16 Lead SOIC

(wide body)

Block Diagram

15V

PWM Output

GND

VCC

V+

V-

Up to 600V

IR2171

COM

To Motor Phase

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