Data Sheet rev 0.2

IRCS2277S

www.irf.com

page

1/20

May 5

IRCS2277S Demo Board

For 3-phase / 380V motor drives

IRCS2277S Demo Board

current sensing

converters compatibility

gate drive

IR22771S or IR21771S, in place of

IR2277S

Stacked boards compatibility

IRMD22141SS demo boards

board

IRCS2277S Demo Board

(Shown above not including IRMD22381Q demo board)

Introduction

The IRCS2277S demo board is an evaluation board for IR2277S current sensor (see device data sheet for details).

IRCS2277S is designed to read 3-phase motor currents on top of pin-out compatible gate driver boards. The board can

be used for both AC and Brushless motors current sensing by reading the voltage developed on shunt resistors. The

board is a flexible solution for different applications and can be customized by means reconfigurable components

options. Three-phase shunt resistor (with sensing pins) must be placed in the gate driver board. Both PWM and

ratiometric analog outputs are provided for all of the three phases. Both PWM output and Over Current signal are

provided as open collector outputs. Board layout has been studied to reduce noise coupling between high and low

voltage signals.

Application Block Diagram

(Refer to connections section to see

interface pins) This diagram shows

the main blocks and connections of

the demo board and the external

components necessary in a typical

motor drive application.