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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Motor Drivers, Controllers

Infineon Technologies IRMCK203

Name: IRMCK203
Brand: Infineon Technologies
SKU: IRMCK203
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IRMCK203

Manufacturer:: Infineon Technologies

Category:: Motor Drivers, Controllers

Package:: 80-TQFP

Datasheet:: IRMCK203.pdf

Description:: IC MOTOR DRIVER 3V-3.6V 80QFP

Quantity:: RFQ Add To RFQ list

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Inventory:3,428

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Product details

Overview

IRMCK203 from International Rectifier is a high-performance sensorless motion control IC for permanent magnet AC motors, implementing closed-loop vector control without position sensors, featuring 10 µs max sensorless computation time, 15-bit speed control resolution, and direct IR2175 current-sensing interface for industrial servo drives.

For engineers reviewing the IRMCK203 datasheet, IRMCK203 pinout, IRMCK203 application, or IRMCK203 equivalent, key selection criteria include sinusoidal back-EMF motor compatibility, auto-retry startup with configurable torque limit, loss-minimizing space vector PWM, integrated brake IGBT control, and support for RS232C/RS422/SPI/I²C host interfaces.

Technical Context

The IRMCK203 implements field-oriented control (FOC) using a rotor angle observer in a synchronously rotating frame, enabling full closed-loop current and velocity control without encoder feedback. It computes estimated rotor position and speed from phase voltage and current measurements, supporting 5–100% speed range with 15-bit resolution.

Its motion peripheral includes dual IR2175 interfaces (10-bit current data), optional low-side inverter leg sensing (12-bit), 4-channel analog PWM outputs, and cycle-by-cycle brake IGBT control triggered by DC bus overvoltage. Protection logic covers phase loss, overcurrent (via GATEKILL), overspeed, and undervoltage events.

Key Specifications

Parameter	Value and Actual Design Meaning
Max Clock Input	33.3 MHz - enables real-time execution of FOC algorithm at ≤10 µs latency
Sensorless Computation Time	≤10 µs - ensures tight current loop bandwidth for high-dynamic servo response
Speed Control Resolution	15-bit full range - provides 32,768 discrete speed steps across 5–100% operating range
PWM Carrier Frequency	16-bit programmable up to 33 MHz - supports fine-grained deadtime insertion and loss-minimized SV-PWM
IR2175 Interface	Dual 10-bit current feedback channels - delivers isolated, high-voltage motor phase current data directly to control core
Startup Retry Trials	Configurable up to 16 attempts - improves reliability in high-inertia or variable-load motor start conditions
Analog I/O	4-channel PWM output + 12-bit ADC with multiplexer - enables analog reference input and local status signaling

Pinout & Package

IRMCK203 is housed in an 80-pin QFP package with exposed thermal pad, optimized for motor control PCB layout and thermal dissipation in compact drive modules.

Pin/Terminal	Circuit Role	Design Meaning
STARTSTOP	Input	Active-low motor start/stop command; initiates sensorless startup sequence with configured torque limit
ESTOP	Input	Hardware emergency stop signal; forces immediate PWM disable and fault latching
DIR	Input	Direction control for bidirectional motor operation; sets sign of velocity reference
FLTCLR	Input	Fault clear signal; resets latched protection faults after root cause removal
FAULT	Output	Open-drain fault indicator; asserts on phase loss, overcurrent, overvoltage, or overspeed events
SYNC	Output	Timing synchronization pulse; aligns external logic or auxiliary controllers to internal PWM frame
REDLED / GREENLED	Output	Visual status indicators; driven directly by internal state machine for power-on, run, fault, and standby modes
OSC1 / OSC2	Crystal Interface	Connects to 33.3 MHz crystal or external clock source for PLL-based system timing generation

Key Features

Feature	Design Value
Sensorless Startup Algorithm	Auto-retry with programmable torque limit and ramp profile - eliminates need for manual tuning across motor inertia variations
Loss-Minimization Space Vector PWM	Real-time optimization of switching vectors and deadtime - reduces conduction and switching losses in IGBT/inverter stage
Integrated Brake IGBT Control	Cycle-by-cycle enable/disable logic tied to DC bus voltage threshold - prevents overvoltage during regeneration without external comparator circuitry
Multi-Protocol Host Interface	Simultaneous RS232C (57.6 kbps), RS422 (1 Mbps), SPI (8 MHz), and parallel bus access to same register map - simplifies integration with PLCs, microcontrollers, or HMI systems
Local EEPROM Initialization	AT24C01A 1k-bit I²C EEPROM interface - stores calibrated motor parameters and startup configuration for standalone operation

Applications

Industrial Servo Drives

Automated Packaging Machinery

Use Scenario: High-precision positioning of robotic arms and pick-and-place mechanisms requiring smooth acceleration/deceleration without encoder feedback.

IC Role / Device Role / Timing Role: Primary sensorless motion controller executing FOC in real time; generates PWM gate signals and monitors current via IR2175.

Use Value: Eliminates encoder cost and cabling while maintaining ±0.5% speed regulation and <10 µs current loop latency.

Use Scenario: Synchronized conveyor belt speed control across multiple stations in food and pharmaceutical packaging lines.

IC Role / Device Role / Timing Role: Centralized velocity regulator interfacing with RS422 network for master-slave coordination and real-time setpoint updates.

Use Value: Enables 1 Mbps deterministic communication and 15-bit speed resolution for sub-millimeter positional repeatability.

Electric Actuators

Low-Cost HVAC Blower Systems

Use Scenario: Linear actuation in valve control and damper positioning where space, cost, and reliability constrain encoder use.

IC Role / Device Role / Timing Role: Standalone motion controller using local EEPROM-stored parameters and discrete I/O for limit switch monitoring and direction sequencing.

Use Value: Reduces BOM count by integrating current sensing interface, braking logic, and protection into single QFP80 IC.

Use Scenario: Variable-speed centrifugal blower control in residential and light commercial HVAC units.

IC Role / Device Role / Timing Role: Sensorless speed regulator accepting analog 0–10 V reference input and driving 3-phase IGBT inverter with loss-minimized SV-PWM.

Use Value: Achieves >85% efficiency across 20–100% airflow range using adaptive deadtime and current feedback scaling.

Equivalent & Alternatives

The following parts are listed as comparable options for similar sensorless PM motor control applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STSPIN32F0A	Integrated 32-bit ARM Cortex-M0+ MCU + gate driver; requires firmware development for sensorless FOC	Targeted for cost-sensitive, lower-power (<500W) BLDC applications with simpler control needs	Choose when design team has embedded software capability and seeks higher integration density
TI C2000 F280049C	DSP-based real-time controller with CLA co-processor; supports encoder-based and sensorless FOC but no built-in IR2175 interface	Used in high-performance industrial drives requiring custom protection logic and multi-axis coordination	Choose when advanced diagnostics, multi-motor sync, or field-upgradable firmware are required

Compared with STSPIN32F0A and C2000 F280049C, IRMCK203 delivers plug-and-play sensorless FOC without code development, native IR2175 support, and hardware-accelerated braking control-making it optimal for rapid deployment of reliable, low-BOM-count PM motor drives.

Availability

IRMCK203 is available at Aetrix Electronics and suitable for industrial servo drives, automated packaging machinery, electric actuators, and HVAC blower systems requiring stable component supply and long-term production continuity.

Supply support for IRMCK203 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

International Rectifier (now part of Infineon Technologies) specialized in high-voltage power semiconductors and intelligent motion control solutions, with leadership in gate drivers, current sensors, and integrated motor control ICs.

The IRMCK203 belongs to the iMOTION™ family of motion control ICs, designed specifically to enable fast, robust, and low-component-count sensorless drives for permanent magnet motors in industrial automation and precision motion systems.

FAQ

Does IRMCK203 require external programming to operate?

No. IRMCK203 executes pre-verified sensorless FOC algorithms in hardware, eliminating firmware development. Motor parameters are configured via host interface registers or stored in external EEPROM (AT24C01A). ServoDesigner™ GUI provides graphical setup without coding.

What current sensing methods does IRMCK203 support?

IRMCK203 natively supports two IR2175 high-voltage current sensing ICs (10-bit resolution) for phase current feedback. It also offers optional low-side inverter leg current sensing using its internal 12-bit ADC with multiplexer and sample/hold circuit.

How does IRMCK203 handle DC bus overvoltage during regenerative braking?

IRMCK203 integrates cycle-by-cycle brake IGBT control triggered by DC bus voltage monitoring. When bus voltage exceeds a programmable threshold, it activates the brake IGBT to dissipate excess energy through an external braking resistor.

Can IRMCK203 operate without a host microcontroller?

Yes. With AT24C01A EEPROM connected via I²C, IRMCK203 boots into standalone mode using stored parameters. Discrete I/O pins (STARTSTOP, DIR, ESTOP, FLTCLR) allow direct control, and FAULT/LED outputs provide status feedback without host intervention.

IRMCK203 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: 80-TQFP

Packaging:: Tray

Product Status:: Obsolete

Motor Type - Stepper:: -

Motor Type - AC, DC:: AC, Synchronous

Function:: Controller - Commutation, Direction Management

Output Configuration:: Pre-Driver

Interface:: I2C, Parallel, RS-232, RS-422, SPI

Technology:: IGBT

Step Resolution:: -

Applications:: General Purpose

Current - Output:: -

Voltage - Supply:: 3V ~ 3.6V

Voltage - Load:: -

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 80-QFP (12x12)

IRMCK203 FAQ

1.How can I place an order for IRMCK203 through Aetrix?

Please submit a Request for Quotation (RFQ) for IRMCK203 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for IRMCK203 reliable?

The price and inventory of IRMCK203 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRMCK203 is usually 5 days.

3.What payment methods are accepted for IRMCK203?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRMCK203 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRMCK203?

IRMCK203 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRMCK203 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for IRMCK203?

For technical support, including IRMCK203 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRMCK203 requirements.

6.How does Aetrix verify that IRMCK203 is sourced from the original manufacturer or authorized distributors?

All IRMCK203 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that IRMCK203 meets industry standards.

7.What is the process for return or replacement of IRMCK203?

All IRMCK203 units undergo pre-shipment inspection (PSI). If there is an issue with IRMCK203, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The IRMCK203 part is unused and in its original packaging.

Return procedure for IRMCK203:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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