STMicroelectronics STEVAL-IHM042V1

Overview

STEVAL-IHM042V1 from STMicroelectronics is a compact, low-voltage dual 3-phase motor control evaluation board built around the STM32F303CC microcontroller and two L6230 monolithic power stages. It supports sensored or sensorless field-oriented control (FOC) of two PMSM motors, operates from 8 V to 48 V DC bus voltage, delivers up to 10 W per motor, and integrates on-board ST-LINK programming and USB-to-serial real-time control via ST MC Workbench.

For engineers reviewing the STEVAL-IHM042V1 datasheet, STEVAL-IHM042V1 pinout, STEVAL-IHM042V1 application, or STEVAL-IHM042V1 equivalent, this board serves as a complete FOC demonstration platform with selectable 3-shunt or 1-shunt current sensing, integrated debugging, dual motor drive timing synchronization, and Hall encoder interface support for industrial motion control prototyping.

Technical Context

The board implements dual independent motor control loops using the STM32F303CC's dual ADCs, 7 comparators, and 4 op-amps with programmable gain-enabling simultaneous real-time current sampling and vector computation. The L6230 drivers provide non-dissipative overcurrent detection, thermal shutdown, cross-conduction protection, and 2.8 A peak output current per phase.

Motor control execution leverages the ARM Cortex-M4F core with hardware floating-point unit and 256 KB Flash/48 KB SRAM; real-time communication uses an embedded STM32F103C8 virtual COM port for bidirectional data exchange with ST MC Workbench, while ST-LINK v2.1 enables SWD-based programming and debugging over USB without external tools.

Key Specifications

Availability

STEVAL-IHM042V1 is available at Aetrix Electronics and suitable for industrial motor control prototyping, PMSM FOC algorithm validation, and embedded motion system development requiring stable component supply and full design traceability.

Supply support for STEVAL-IHM042V1 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 evaluation board belongs to ST's STEVAL motor control reference design series, developed specifically to accelerate adoption of high-efficiency field-oriented control in cost-sensitive, space-constrained motion systems.

FAQ

Does STEVAL-IHM042V1 support sensorless FOC out of the box?

Yes. The board ships with firmware supporting both sensored (Hall encoder) and sensorless FOC modes. Sensorless operation uses back-EMF estimation implemented in the STM32F303CC's comparator and ADC peripherals, with configuration handled through ST MC Workbench GUI without code modification.

What motor types can be controlled using this board?

The STEVAL-IHM042V1 is validated for three-phase permanent magnet synchronous motors (PMSMs) with rated voltages between 8 V and 48 V and continuous power ≤10 W per channel. It is not designed for BLDC commutation-only or stepper motor control, nor for high-power (>20 W) or high-voltage (>52 V) applications.

Is external power required, or does USB supply sufficient power for motor operation?

USB provides only 5 V for logic and debugging; it cannot power the motors. An external 8–48 V DC supply must be connected to the VS terminal. The board includes undervoltage lockout and thermal protection to prevent damage during testing with varying bus voltages.

Can I replace the L6230 drivers with other ST motor drivers on this board?

No. The L6230 is soldered in PowerSO-36 package and electrically integrated with gate drive, current sense, and protection circuitry specific to its pinout and timing. The PCB layout, routing, and firmware are optimized exclusively for the L6230; substitution would require redesign of power stage, layout, and control firmware.