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

Infineon Technologies IRMCF343TR

Name: IRMCF343TR
Brand: Infineon Technologies
SKU: IRMCF343TR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IRMCF343TR

Manufacturer:: Infineon Technologies

Category:: Motor Drivers, Controllers

Package:: 64-LQFP

Datasheet:: IRMCF343TR.pdf

Description:: IC MOTOR DRIVER 64MQFP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

IRMCF343 from Infineon Technologies (formerly International Rectifier) is a RAM-based sensorless motor control IC integrating a dedicated Motion Control Engine (MCE) and an 8051 microcontroller for inverter-driven permanent magnet AC motors in appliances. It delivers 11 μs sensorless computation, 12-bit A/D conversion at 2 μs, 8-bit analog PWM outputs, and supports interior/surface PM motors with single-shunt current reconstruction - enabling cost-effective, high-efficiency washing machine and HVAC blower control.

For engineers reviewing the IRMCF343 datasheet, IRMCF343 pinout, IRMCF343 application, or IRMCF343 equivalent, key selection considerations include MCE hardware acceleration for sinusoidal sensorless control, dual-processor architecture (MCE + 8051), QFP64 package compatibility with IRMCK343, and support for MATLAB/Simulink-based graphical programming of motion algorithms.

Technical Context

The IRMCF343 implements a dual-processor architecture: the Motion Control Engine (MCE) executes fixed-function sensorless control blocks-including Angle Estimator, Vector Rotator, and Low-Loss SVPWM-in hardware, while the 8051 core handles system I/O, communication (UART/I²C/SPI), and user interface logic. Both engines share dual-port RAM for real-time signal exchange.

Its analog subsystem includes five 12-bit A/D channels (three buffered, two unbuffered), integrated single-shunt current reconstruction circuitry eliminating external op-amps, and three 8-bit PWM analog outputs synchronized to the 128 MHz SYSCLK. The MCE operates on 16-bit signed data with 6 KB dedicated memory, and the 8051 executes instructions at 2 cycles per instruction (60 MIPS @ 120 MHz).

Key Specifications

Parameter	Value and Actual Design Meaning
Max SYSCLK	128 MHz - enables high-speed real-time control loop execution and fast ADC sampling.
Sensorless Computation Time	11 μs typ - ensures sub-millisecond torque response for dynamic appliance load changes.
A/D Resolution & Speed	12 bits / 2 μs - provides precise voltage/current feedback with minimal latency for closed-loop stability.
MCE Data Range	16-bit signed - supports high-precision angle estimation and vector math without overflow in motor flux calculations.
Program RAM	48 KB loaded from external EEPROM - allows full firmware iteration during development without mask ROM commitment.
GateKill Latency	2 μs (digital filtered) - guarantees rapid fault shutdown to protect inverter power stages during overcurrent events.
PWM Carrier Counter	16-bit / SYSCLK - supports fine-resolution carrier frequency tuning up to 128 MHz for optimized EMI and acoustic noise control.

Pinout & Package

IRMCF343 is housed in a lead-free 64-pin Quad Flat Package (QFP64) with 0.5 mm pitch, designed for surface-mount assembly and thermal reliability in appliance motor drive modules.

Pin/Terminal	Circuit Role	Design Meaning
P1.0/T2	8051 Timer/Counter 2 input	Supports high-accuracy timing for speed measurement or event capture in motor feedback loops.
P1.1/RXD	UART receive input	Enables host MCU or HMI communication for configuration, diagnostics, and runtime parameter updates.
P1.2/TXD	UART transmit output	Provides serial telemetry output including motor status, error codes, and real-time control variables.
P1.3/SYNC/SCK	SYNC output or SPI clock	Generates synchronization pulse for external gate drivers or serves as SPI master clock for peripheral interfacing.
P1.4/CAP	Capture timer input	Records edge timestamps from encoderless rotor position signals (e.g., back-EMF zero-crossing detection).
VDD1, VDDA, VSS, VSSA	Power and ground rails	Dual-domain supply (digital/analog) with separate grounding minimizes noise coupling into sensitive ADC and MCE analog paths.

Key Features

Feature	Design Value
Hardware MCE for sensorless control	Offloads real-time motor control (angle estimation, SVPWM, current reconstruction) from CPU, reducing software complexity and jitter.
Single-shunt current feedback	Eliminates need for external op-amps and differential amplifiers, cutting BOM cost and PCB area in inverter designs.
Graphical programming via MATLAB/Simulink	Enables drag-and-drop motion algorithm development using pre-verified MCE functional blocks, accelerating prototyping.
Pin compatibility with IRMCK343	Allows identical PCB layout for both development (RAM-based IRMCF343) and production (OTP-ROM IRMCK343) versions.
Dual-port RAM interconnect	Enables deterministic, low-latency data exchange between MCE and 8051 cores without bus arbitration overhead.

Applications

Washing Machine Drum Drive

HVAC Blower Motor

Use Scenario: Variable-speed drum rotation with spin-dry vibration suppression and water-level adaptive torque control.

IC Role / Device Role / Timing Role: Primary sensorless motor controller executing real-time field-oriented control (FOC) and load-dependent speed regulation.

Use Value: Enables energy-efficient, quiet operation with <11 μs control loop latency and single-shunt current sensing for compact inverter design.

Use Scenario: Multi-stage airflow control in residential heat pumps and ducted air handlers requiring smooth ramp-up and stall prevention.

IC Role / Device Role / Timing Role: Integrated motion controller managing sinusoidal commutation, thermal derating, and fan speed profiling via UART command interface.

Use Value: Delivers stable low-RPM operation using hardware-accelerated angle estimation and 12-bit ADC resolution for precise airflow feedback.

Refrigerator Compressor

Dishwasher Circulation Pump

Use Scenario: Inverter-driven variable-capacity compressor with refrigerant pressure-adaptive speed control and soft-start to reduce mechanical stress.

IC Role / Device Role / Timing Role: Sensorless FOC controller coordinating motor torque, inverter switching, and system protection logic via dual-core architecture.

Use Value: Achieves >95% efficiency across load range using MCE-optimized SVPWM and 2 μs gate-kill fault response for compressor safety.

Use Scenario: High-torque, low-noise circulation pump operating under varying water temperature and detergent viscosity conditions.

IC Role / Device Role / Timing Role: Real-time motor controller implementing adaptive current limiting and stall detection using single-shunt reconstruction and 5-channel ADC inputs.

Use Value: Ensures reliable start-up and continuous operation with no external current sense amplifiers, reducing component count by ≥3 devices.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
IRMCK343TR	OTP-ROM version with identical QFP64 pinout and MCE/8051 architecture; lacks external EEPROM boot and program RAM flexibility.	Targeted for high-volume production where firmware is finalized; not suitable for iterative development or field updates.	Select IRMCK343TR only when firmware is locked and cost reduction is prioritized over programmability.
STSPIN32F0B	Integrated 3-phase gate driver + Cortex-M0+ MCU; no dedicated MCE hardware; relies on software-based observer algorithms.	Better suited for lower-cost, lower-performance fans/pumps; lacks hardware-accelerated angle estimator and single-shunt reconstruction circuitry.	Choose STSPIN32F0B for simpler BLDC applications where 11 μs sensorless latency and MCE graphical programming are not required.

Compared with IRMCK343TR, IRMCF343 offers full development flexibility via external EEPROM and RAM, while STSPIN32F0B trades MCE hardware acceleration for integration density and ARM ecosystem support-making IRMCF343 optimal for high-fidelity appliance motor control prototyping and performance-critical production.

Availability

IRMCF343 is available at Aetrix Electronics and suitable for washing machine drum drives, HVAC blower systems, refrigerator compressors, and dishwasher circulation pumps requiring stable component supply and long-term design-in support.

Supply support for IRMCF343 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

Infineon Technologies is a global semiconductor leader specializing in power management, automotive, and industrial control solutions, with deep expertise in motor drive ICs and silicon carbide technologies.

The IRMCF343 belongs to Infineon's Motion Control IC product line, engineered specifically to deliver turnkey, sensorless permanent magnet motor control for cost-sensitive, high-volume white goods applications.

FAQ

What development tools are required to program the IRMCF343?

The IRMCF343 requires MATLAB/Simulink with Infineon's MCE Designer toolbox for graphical motion algorithm development, plus a JTAG emulator (e.g., Segger J-Link) for 8051 firmware debugging. External EEPROM programming is needed for boot code storage, and no external op-amps are required due to integrated single-shunt reconstruction.

Does the IRMCF343 support both interior and surface permanent magnet motors?

Yes, the IRMCF343 explicitly supports both interior permanent magnet (IPM) and surface permanent magnet (SPM) motors through configurable MCE blocks including angle estimator variants, flux-weakening control, and rotor position tracking optimized for saliency-based and back-EMF-based methods.

How does the single-shunt current reconstruction work without external op-amps?

The IRMCF343 integrates a dedicated analog front-end with programmable gain, offset calibration, and digital filtering that directly interfaces with a single shunt resistor in the inverter leg. Its hardware MCE reconstructs all three-phase currents using synchronized PWM blanking and dual-port RAM-based state estimation - eliminating external amplification.

Is the IRMCF343 pin-compatible with any other Infineon motor control ICs?

Yes, the IRMCF343 is fully pin-compatible with the IRMCK343 OTP-ROM variant, sharing identical QFP64 footprint, pin functions, and power sequencing. This enables seamless transition from development (IRMCF343) to mass production (IRMCK343) without PCB redesign.

IRMCF343TR Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: MCE™

Package/Case:: 64-LQFP

Packaging:: Tape & Reel (TR)

Product Status:: Not For New Designs

Motor Type - Stepper:: -

Motor Type - AC, DC:: AC, Synchronous

Function:: Controller - Commutation, Direction Management

Output Configuration:: Pre-Driver - Half Bridge (3)

Interface:: I2C, RS-232, SPI

Technology:: IGBT

Step Resolution:: -

Applications:: Appliance

Current - Output:: -

Voltage - Supply:: 1.62V ~ 1.98V, 3V ~ 3.6V

Voltage - Load:: -

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 64-MQFP (10x10)

IRMCF343TR FAQ

1.How can I place an order for IRMCF343TR through Aetrix?

Please submit a Request for Quotation (RFQ) for IRMCF343TR 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 IRMCF343TR reliable?

The price and inventory of IRMCF343TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRMCF343TR is usually 5 days.

3.What payment methods are accepted for IRMCF343TR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRMCF343TR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRMCF343TR?

IRMCF343TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRMCF343TR 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 IRMCF343TR?

For technical support, including IRMCF343TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRMCF343TR requirements.

6.How does Aetrix verify that IRMCF343TR is sourced from the original manufacturer or authorized distributors?

All IRMCF343TR 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 IRMCF343TR meets industry standards.

7.What is the process for return or replacement of IRMCF343TR?

All IRMCF343TR units undergo pre-shipment inspection (PSI). If there is an issue with IRMCF343TR, 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 IRMCF343TR part is unused and in its original packaging.

Return procedure for IRMCF343TR:

1.Submit a request within 90 days.

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

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