STMicroelectronics STEVAL-IHM028V1

Overview

STEVAL-IHM028V1 from STMicroelectronics is a fully populated, RoHS-compliant 2 kW three-phase motor control demonstration board built around the STGIPS20K60 600 V / 17 A IGBT intelligent power module (IPM). It supports AC input (90–285 VAC) or DC bus (125–400 VDC), integrates hall/encoder/tachometer interfaces, shunt-based current sensing, hardware overtemperature and overcurrent protection, and active fan control with automatic thermal switching.

For engineers reviewing the STEVAL-IHM028V1 datasheet, STEVAL-IHM028V1 pinout, STEVAL-IHM028V1 application, or STEVAL-IHM028V1 equivalent, this board serves as a validated reference for field-oriented control (FOC) implementation in HVAC compressors, high-end power tools, and white goods inverters - with documented support for PFC-compliant +400 V DC bus operation and inrush limiting via bypass relay.

Technical Context

The board implements a complete 3-phase inverter stage using the STGIPS20K60 IPM, which integrates short-circuit rugged IGBTs with negative temperature coefficient, undervoltage lockout (UVLO), and smart shutdown logic. Its gate driver architecture enables fast current feedback conditioning essential for FOC algorithms.

It features dual-mode input handling (AC line or DC bus), configurable current sensing (single/three-shunt), hardware-level brake control with overvoltage comparator, and analog temperature monitoring with dedicated amplifier and comparator circuitry feeding microcontroller inputs.

Key Specifications

Availability

STEVAL-IHM028V1 is available at Aetrix Electronics and suitable for HVAC compressor control, industrial power tool inverters, and high-efficiency white goods motor drives requiring stable component supply and pre-validated hardware reference designs.

Supply support for STEVAL-IHM028V1 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 board belongs to ST's STEVAL (ST Evaluation) series - purpose-built demonstration platforms that integrate production-grade IPMs, protection circuitry, and interface flexibility to accelerate development of field-oriented motor control systems.

FAQ

What microcontroller interface signals does STEVAL-IHM028V1 expose?

The board provides direct access to PWM input pins (IN1–IN6), fault status outputs (FO), bootstrap supply enable (VCC), and analog feedback channels including three shunt amplifier outputs, temperature voltage (THERM), and bus voltage (BUS_V). All signals are routed to 2.54 mm pitch headers compatible with standard MCU evaluation boards.

Does STEVAL-IHM028V1 support encoder-based position feedback?

Yes - it includes dedicated differential encoder input terminals (A/B/Z phases) with termination resistors and ESD protection, alongside Hall sensor inputs (U/V/W) and tachometer signal conditioning. Both interfaces connect directly to the microcontroller's timer or quadrature decoder peripherals without external level-shifting.

Can STEVAL-IHM028V1 operate from a rectified 400 V DC bus?

Yes - the design explicitly supports DC bus voltages up to +400 V DC, verified in ST's documentation (Doc ID 010011 Rev 1) to ensure compatibility with PFC front-end stages. The input stage includes X/Y capacitors, common-mode chokes, and a relay-bypassed inrush limiter rated for this range.

Is thermal management implemented solely via passive heatsinking?

No - the board integrates an active cooling system with a thermistor-monitored heatsink, comparator-based overtemperature detection, and a PWM-controlled fan driver. When temperature exceeds threshold, the fan activates automatically; the circuit also asserts a hardware fault signal to the host MCU.