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IRMCK201 Datasheet(PDF) 2 Page - International Rectifier

Part No. IRMCK201
Description  High Performance Configurable Digital AC Servo Control IC
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Maker  IRF [International Rectifier]
Homepage  http://www.irf.com
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IRMCK201 Datasheet(HTML) 2 Page - International Rectifier

 
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Dynamic braking control for excess DC bus voltage
IRMCK201
This document is the property of International Rectifier and may not be copied or distributed without expressed consent.
2
Overview
IRMCK201 is a new International Rectifier integrated circuit device designed as a one-chip solution for complete
closed loop current control and velocity control for a high performance servo drive system. Unlike a traditional
microcontroller or DSP, IRMCK201 does not require any programming to complete complex AC servo algorithm
development. Combined with International Rectifier's high voltage gate drive and current sensing IC, the user can
implement a complete AC servo control with minimum component count and virtually no design effort. Although
IRMCK201 contains dedicated logic to perform closed loop control of AC current and velocity, it has a wide range of
application coverage through its flexible configuration ability. The drive can be easily configured for induction
machine closed loop vector control or permanent magnet motor servo drive. Rich motion peripherals, analog and
digital I/O can also be configured. Host communication logic contains an asynchronous RS232C or RS422
communication interface, a fast slave SPI interface and an 8-bit-wide Host Parallel Interface. All communication ports
have the same access capability to the host register set. The user can write to and read from the predefined registers to
configure and monitor the drive through these communication ports.
IRMCK201 Main Features
IRMCK201 contains the following functions for AC servo motor control applications:
Complete closed loop current control based on Synchronously Rotating Frame Field Orientation
Configurable update rate with PWM carrier frequency
Configurable parameters (all PI controller gains, PI output limit range, current feedback scaling, encoder
feedback scaling)
Configurable control structure for Induction machine or AC Permanent Magnet machine (Disable/enable slip
gain)
Closed loop velocity control with configurable update rate
Enable/disable velocity loop
Selectable reference input for torque and speed input
Analog reference input
RS232C/RS422 reference input
Cycle-by-cycle on/off Control for Brake IGBT
DC bus voltage feedback
Standard Encoder interface with Hall ABC support
A/B quadrature signal input up to 1 MHz
Choice of separate or multiplexed Hall A/B/C signal input
Auto-initialization with Hall A/B/C plus Z pulse input
Adaptable for any line count encoder from 200 PPR to 10,000 PPR
1/T counter (1 MHz) for low speed performance improvement
Space Vector PWM with deadtime insertion
IR2175 current sensing IC interface
IR213x high voltage gate driver IC interface
Low cost serial 12 bit A/D interface with multiplexer and sample/hold circuit
4 channel analog output by PWM
0-3.3 V, 120 kHz output
EEPROM for startup initialization of internal data/parameters through host register interface
AT24C01A, 128 x 8


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