January 15, 2003 Rev 2.1

IRACO201

AC Servo Control FPGA Object Code

Features

Xilinx Spartan2-300

control solution

Complete closed loop current control

(Synchronously Rotating Frame Field Orientation)

Closed loop configurable velocity control

Direct interface to IR2175 current sensing high

voltage IC

Direct interface to IR213x 3-phase gate driver IC

Direct Encoder interface with multiplex/non-

multiplexed Hall A/B/C signals

Versatile loss minimization Space Vector PWM

Configurable architecture

o

Support AC PM motor or Induction motor

o

Closed loop or open loop control

Asynchronous serial communication interface

(RS232C, RS422, RS485)

Fast SPI interface with multi-axis control capability

Optional 12-bit A/D interface for hall effect current

sensing

±10V reference command input with 12-bit A/D

interface

17-bit parallel bus interface for microcontroller

expansion

7-bit discrete I/O for sequencing and status monitor

Integrated brake IGBT control

Configurable GUI (Graphic User Interface) available

EXO file format

Product Summary

Max. Sysclk

33.3 MHz

Max. PLL clock for current feedback

133.3 MHz

Closed loop current control computation time 6 usec max

Closed loop current loop bandwidth(-3dB)

5.5 kHz

Closed loop velocity loop update rate

5/10 kHz

PWM carrier frequency

16 bit/Sysclk

IR2175 Current feedback sampling latency

8.3 usec

Current feedback temp drift/offset

calibrated

Current feedback data resolution

1111 count/sysclk*4

Max encoder input frequency

4 MHz

1/T encoder counter

16 bit/1MHz

Max ASCI comm. Speed

56 Kbps

Max SPI clock

6 MHz

Target EEPROM device

XC18V02 (programmable)

XC17V02 (one-time)

Description

IRACO201 is an FPGA object code of complete AC servo control system, which can be downloaded into Xilinx Spartan2-300

TM

low cost FPGA. With IRACO201, user can readily build the high performance servo drive system without any programming effort

IRACO201 provides immediate solution for high performance AC servo amplifier application without any programming effort. This

soft ASIC is so flexible that user can yet configure and optimize the system for each application needs. With International

Rectifier high voltage ICs such as IR2175 current sensing IC and IR2137 3-phase gate drive IC, IRACO201 minimizes analog

and power electronics component count, and simplifies the design for low cost AC servo solution.

This document is the property of International Rectifier and may not be copied or distributed without expressed consent.