STMicroelectronics STEVAL-IHM035V2

Overview

STEVAL-IHM035V2 from STMicroelectronics is a 3-phase high-voltage inverter power board designed for field-oriented control (FOC) and scalar motor control of PMSM and ACIM motors up to 100 W, built around the STGIPN3H60 SLLIMM™-nano intelligent power module, featuring single-shunt current sensing, on-board NTC temperature feedback, and overcurrent protection with boost/disabling capability.

For engineers reviewing the STEVAL-IHM035V2 datasheet, STEVAL-IHM035V2 pinout, STEVAL-IHM035V2 application, or STEVAL-IHM035V2 equivalent, this board supports sinusoidal/trapezoidal commutation, interfaces via MC connector to ST MCU control boards, provides BEMF detection networks for six-step drives, and integrates bus voltage feedback and emergency stop functionality.

Technical Context

The board implements a complete 3-phase inverter stage using the STGIPN3H60 IPM - a 600 V, 3 A SLLIMM™-nano module integrating gate drivers, bootstrap diodes, and protection circuitry. It supports both sensorless (BEMF-based) and sensored (encoder/Hall) motor control topologies.

Power supply architecture includes VIPER16LD-based offline flyback for +15 V and +5 V rails, LD1117 linear regulators for +3.3 V, and dedicated signal conditioning for shunt-based current sensing (CUR_OP±), temperature (NTC1), and bus voltage feedback.

Key Specifications

Availability

STEVAL-IHM035V2 is available at Aetrix Electronics and suitable for industrial pump control, HVAC fan drives, small appliance motor control, and educational motor control development requiring stable component supply and rapid prototyping capability.

Supply support for STEVAL-IHM035V2 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/mixed-signal devices for industrial, automotive, and consumer applications.

This evaluation board belongs to ST's STEVAL motor control hardware platform family, engineered to accelerate validation of ST's SLLIMM™-nano IPMs and associated FOC firmware stacks for cost-sensitive, space-constrained motor drive systems.

FAQ

Does STEVAL-IHM035V2 include an MCU or require external control?

No, it is a power board only - no onboard microcontroller. It requires connection via the MC connector to an external ST MCU control board (e.g., STM32 Nucleo-64 or Discovery kits) to provide PWM signals, ADC readings, and control logic. The board delivers gate drive, current/voltage/temperature feedback, and protection functions only.

What motor types and connection methods does it support?

It supports 3-phase PMSM, BLDC, and AC induction motors with star or delta winding configurations. Motor leads connect via J1 (17-pin MOTOR_CONN), and Hall/encoder feedback is accepted through J2 (3-pin) and J5 (3-pin) headers. BEMF sensing is implemented for six-step operation without external sensors.

Can it operate from a 24 V DC supply instead of rectified mains?

Yes - while designed for up to 400 V DC bus, the VIPER16LD-based auxiliary supply and STGIPN3H60 IPM allow operation down to ~12 V DC bus with reduced output power. However, bootstrap capacitor charging requires minimum Vbus > 10 V; stable operation below 24 V may need external 15 V bias for gate drivers.

Is the single-shunt current sensing calibrated and supported in ST's motor control SDK?

Yes - the board's TS3021ILT-based shunt amplifier chain matches ST's Motor Control SDK v5.x+ reference designs. Calibration coefficients and phase reconstruction algorithms are included in the X-CUBE-MCSDK software package, enabling immediate use with STM32CubeMX and Motor Pilot GUI.