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IRMCS2033
Overview
The IRMCS2033 is a low voltage drive design platform for a complete Sensorless Permanent Magnet motor drive
system based on the IRMCK203 digital motion control IC. The system is based on a configurable control engine
implemented by hardware logic in the IRMCK203. The system has a simple and low cost structure, made possible by
advanced IR motion components including the IR2175 monolithic current sensing high voltage IC and IR2106 gate
driver IC. Instead of using IR2175 as current feedback option, IRMC2033 also supports Inverter Low side shunt
current feedback via A/D converter. These feedback options used in conjunction with the IRMCK203 simplify
hardware implementation. Since all control logic is implemented in hardware logic as opposed to programmed
software, unmatched parallel computation is achieved, resulting in higher bandwidth control and higher motor
operating frequency (15 usec minimum PWM loop cycle).
Despite hardware logic implementation, its design flexibility allows the user to configure Permanent Magnetic ac
motors (Sinusoidal Back EMF) with different motor parameters and different types of communication protocols.
DC Power
Analog
Monitor
EEPROM
IRMCS2033
Analog Speed
Reference
Brake
Circuit w
Brake
4
channel
D/A
IRMCK203
select
A/D
interface
DC bus dynamic
brake control
BRAKE
A/D
MUX
DC bus feedback
Resistor
e
Host
Controller
RS232C
or
RS422
SPI
Interface
Host
Register
Interface
RAMP
+
-
+
+
-
-
j θ
Space
Vector
PWM
Dead
time
FAULT
MOSFET Inverter
IR2106
IRFB59N10D
Parallel
Interface
Configuration
Registers
Monitoring
Registers
Rotor Angle/
speed
Estimator
e
j θ
2/3
Period/Duty
counters
Period/Duty
counters
IR2175
IR2175
Motor
Figure 1. IRMCS2033 System Block Diagram
This document is the property of International Rectifier and may not be copied or distributed without expressed consent.
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