IRMCK341_15 datasheet(6/36 Pages) IRF

6 / 36 page

IRMCK341

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2 IRMCK341 Block Diagram and Main Functions

IRMCK341 block diagram is shown in Figure 2.

Figure 2.

IRMCK341 Internal Block Diagram

IRMCK341 contains the following functions for sensorless AC motor control applications:

• Motion Control Engine (MCETM)

Proportional plus Integral block

Low pass filter

Differentiator and lag (high pass filter)

Ramp

Limit

Angle estimate (sensorless control)

Inverse Clark transformation

Vector rotator

Bit latch

Peak detect

Transition

Multiply-divide (signed and unsigned)

8bit

CPU

Core

Motion Control

Sequencer

Motion

Control

Modules

Dual Port

RAM

512 Bytes

MCE

Program

RAM

5.5KBytes*

Local

RAM

2KBytes

Program

OTP ROM

64KBytes

A/D

MUX

S/H

OP Amp

D/A

(PWM)

Timer

Counnter0

Watchdog

Timer

UART0

PORT 1

Low Loss

SVPWM

CGATEKILL

To IGBT

gate drive

MCE (Motion Control Engine)

Monitoring

Host

Interface

Digital

I/Os

8051 Microcontroller

AIN1

JTAG

Emulator

Debugger

PLL

Crystal

(4MHz)

120MHz

(8)

PORT 2

PORT 3

Timer

Counnter1

Timer

Counnter2

Periodic

Timer

Interrupt

Control

Single Shunt

Current

Sensing

shunt

resistor

UART1

PORT 4

I2C / SPI

EEPROM

Interface

* Sizes are

configurable

DC bus volt

sensing

(8)

(5)

(3)

2/4

Clock

divider

MCE Clock

8051

Clock

AIN6

AIN3

AIN4

AIN5

AIN2

Analog

inputs

AIN0

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