January 15, 2003
Rev 2.1
IRACO201
AC Servo Control FPGA Object Code
Accelerator
TM
Soft ASIC Manual
Product Summary
TM
Features
Xilinx Spartan2-300 based complete AC servo
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
鹵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
Max. Sysclk
Max. PLL clock for current feedback
33.3 MHz
133.3 MHz
Closed loop current control computation time 6 usec max
Closed loop current loop bandwidth(-3dB)
Closed loop velocity loop update rate
PWM carrier frequency
IR2175 Current feedback sampling latency
Current feedback temp drift/offset
Current feedback data resolution
Max encoder input frequency
1/T encoder counter
Max ASCI comm. Speed
Max SPI clock
Target EEPROM device
5.5 kHz
5/10 kHz
16 bit/Sysclk
8.3 usec
calibrated
1111 count/sysclk*4
4 MHz
16 bit/1MHz
56 Kbps
6 MHz
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
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.
TM
This document is the property of International Rectifier and may not be copied or distributed without expressed consent.
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