STMicroelectronics STEVAL-IFN003V1

Overview

STEVAL-IFN003V1 from STMicroelectronics is an evaluation board for field-oriented control (FOC) of permanent magnet synchronous motors (PMSM), integrating the STM32F103CBT6 ARM® Cortex-M3 microcontroller and L6230PD three-phase DMOS motor driver in PowerSO package. It supports 8–52 V DC input, up to 45 W output power, sensorless or Hall/encoder-based commutation, and single-shunt current sensing.

For engineers reviewing the STEVAL-IFN003V1 datasheet, STEVAL-IFN003V1 pinout, STEVAL-IFN003V1 application, or STEVAL-IFN003V1 equivalent, this page provides verified hardware architecture, FOC firmware compatibility (PMSM FOC SDK), USB debug interface functionality, real-time data exchange capability, and board-level thermal and protection features including non-dissipative overcurrent detection and undervoltage lockout.

Technical Context

The board implements a complete sensorless or sensor-assisted PMSM FOC system using the STM32F103CBT6's 72 MHz CPU, 128 kB Flash, and dedicated motor control peripherals (advanced timers with complementary PWM, ADCs for current sampling, and SWD debugging). The L6230PD driver delivers 2.8 A peak phase current with integrated cross-conduction protection, thermal shutdown, and uncommitted comparator for custom fault handling.

Hardware design includes four-layer PCB layout optimized for motor drive EMI suppression, dedicated current-sense shunt resistor network, bus voltage feedback circuitry, and isolated USB-to-serial interface (via ST-LINK/V2 or compatible) enabling real-time parameter tuning and oscilloscope-style waveform capture via USART1_TX/RX and DAC outputs.

Key Specifications

Availability

STEVAL-IFN003V1 is available at Aetrix Electronics and suitable for industrial motor control prototyping, HVAC blower development, and small-appliance PMSM drive validation requiring stable component supply and documented reference firmware integration.

Supply support for STEVAL-IFN003V1 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power ICs, sensors, and analog components for industrial, automotive, and consumer applications.

This board belongs to ST's STEVAL motor control evaluation platform family, engineered to accelerate development of high-efficiency, digitally controlled brushless motor drives with minimal hardware abstraction layer effort.

FAQ

Does STEVAL-IFN003V1 support encoder feedback?

Yes. The board provides dedicated differential encoder inputs (EncA, EncB, EncZ) routed to STM32F103CBT6's timer channels, enabling quadrature decoding for precise rotor position tracking in closed-loop speed or position control applications.

What firmware versions are compatible with this board?

It is validated with ST's official PMSM FOC SDK v2.0 and later releases, specifically built for STM32F103CBT6. Firmware requires no hardware modification and leverages on-chip ADCs, advanced timers, and DMA for real-time current sampling and PWM generation.

Can the board operate without Hall sensors or encoders?

Yes. The board supports sensorless FOC using back-EMF observer algorithms implemented in the PMSM FOC SDK. Startup is achieved via open-loop alignment followed by transition to closed-loop observer-based control once sufficient rotor motion is detected.

Is USB debug functionality self-powered or host-powered?

The USB interface is host-powered via the micro-USB connector and supplies 3.3 V to the STM32 MCU and debug circuitry. It does not draw power from the motor DC bus, ensuring isolation between control logic and power stage during debugging sessions.