IRMCK341

www.irf.com

© 2007 International Rectifier

5

1 Overview

IRMCK341 is a new International Rectifier integrated circuit device primarily designed as a one-

chip solution for complete inverter controlled appliance motor control applications. Unlike a

traditional microcontroller or DSP, the IRMCK341 provides a built-in closed loop sensorless

control sequencer and dual port RAM to map internal signal nodes. IRMCK341 also employs a

unique single shunt current reconstruction circuit to eliminate additional analog/digital circuitry and

enables a direct shunt resistor interface to the IC. Motion control programming is achieved using a

Sequencing, user interface, host communication, and upper layer control tasks can be

implemented in the 8051 high-speed 8-bit microcontroller. The 8051 microcontroller is equipped

with a JTAG port to facilitate emulation and debugging tools. Figure 1 shows a typical application

schematic using the IRMCK341.

IRMCK341 is intended for volume production purpose and contains 64K bytes of OTP (One Time

Programming) ROM, which can be programmed through a JTAG port. For a development

purpose use, IRMCF341 contains a 48k byte of RAM in place of program OTP to facilitate an

application development work. Both IRMCF341 and IRMCK341 come in the same 64-pin QFP

package with identical pin configuration to facilitate PC board layout and transition to mass

production

IRMCK341

Multiple

Output

Power

Supply

IRS2336D

HVIC

Upto 24 Digital

Input/Output

to EEPROM

7 Analog Input

Appliance Inverter

3.3

V

1.8

V

Passive

EMI

Filter

UART interface

to Front Panel

Motor

(PMSM)

Figure 1.

Typical Application Block Diagram Using IRMCK341