IRMCS2031

Overview

The IRMCS2031 is a design platform for a complete Sensorless drive system based on the IRMCK201 digital motion

control IC. The system is based on configurable control engine implemented by hardware logics in the IRMCK203.

The system has a simple and low cost structure, made possible by an advanced IR motion components including the

IRAMX16UP60A IGBT module, and IR2175 monolithic current sensing high voltage IC. These components together

with the IRMCK203 simplify hardware implementation. Since all control logic is implemented in hardware logic as

opposed to programmed software, unmatched parallel computation is achieved resulting in higher bandwidth control

and higher motor operating frequency (15 usec minimum PWM loop cycle).

Despite of hardware logic implementation, its design flexibility allows the user to configure Permanent Magnetic ac

motors (Sinusoidal Back EMF) with different motor parameters and different types of communication protocols.

Host

Controller

IR2175

IR2175

IRMCK203

Motor

AC Power

IRMCS2031

RS232C

or

RS422

θ

j

e

θ

j

e

2/3

Dead

time

Host

Register

Interface

Configuration

Registers

Monitoring

Registers

SPI

Interface

Space

Vector

PWM

Period/Duty

counters

Period/Duty

counters

BRAKE

FAULT

+

-

-

+

-

+

A/D

interface

A/D

MUX

select

DC bus dynamic

brake control

Analog Speed

Reference

DC bus feedback

Parallel

Interface

IRAMY20UP60A

IGBT module

EEPROM

Rotor Angle/

speed

Estimator

4

channel

D/A

Analog

Monitor

RAMP

Figure 1.

IRMCS2031 System Block Diagram

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