IR2170 データシートの表示（PDF） - International Rectifier

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IR2170

OVER CURRENT SENSING IC

International Rectifier 

Preliminary Data Sheet No. PD60186-C

IR2170(S)

OVER CURRENT SENSING IC

Features

• Floating channel up to +600V

• Monolithic integration

• Overcurrent sensing through shunt resistor

• Low IQBS allows the boot strap power supply

• Independent fast 1µsec overcurrent trip signal

• High common mode noise immunity

• Input overvoltage protection for IGBT short circuit

condition

• Open Drain outputs

Product Summary

VOFFSET

IQBS

600Vmax

1mA

Overcurrent trip

signal delay

Overcurrent trip level

1.5usec (typ)

+/-260mV (typ.)

Description

Packages

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-

8-Lead SOIC

nal processing. The dedicated overcurrent trip (OC)

8-Lead PDIP

signal facilitates IGBT short circuit protection. The OC

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.

Typical Application

+15V

1Ω

Vdd

DC Bus (up to 600V)

1k

(typ)

VCC

OC

10 nF

COM

VB

+ VIN+

VIN-

(AGND) VS

(DGND)

10 uF

0.47 uF

RSENSE

To Motor Phase

IR2170

(Circuit Common = DC Bus Negative)

(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.

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