Typical Application

Product Summary

600Vmax

1mA

Overcurrent trip

1.5usec (typ)

signal delay

Overcurrent trip level

+/-260mV (typ.)

OVER CURRENT SENSING IC

Features

condition

Description

IR2170(S) is the monolithic over current sensing IC de-

signed for motor drive applications. It senses the motor

phase current through an external shunt resistor, de-

tects overcurrent condition, and transfers the signal to

the low side. IR’s proprietary high voltage isolation tech-

nology is implemented to enable the high bandwidth sig-

nal processing. The dedicated overcurrent trip (OC)

signal facilitates IGBT short circuit protection. The OC

Packages

8-Lead SOIC

(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.

8-Lead PDIP

Preliminary Data Sheet No. PD60186-C

DC Bus (up to 600V)

To Motor Phase

R

SENSE

+15V

+

(AGND)

Vdd

(DGND)

V

IN+

V

IN-

V

B

V

S

V

CC

COM

OC

(Circuit Common = DC Bus Negative)

10 uF

0.47 uF

10 nF

1 k

(typ)

1

Ω

IR2170

output pulse width can be programmed by the external resistor and capacitor. The open-drain outputs make easy for

any interface from 3.3V to 15V.