STMicroelectronics STEVAL-IHM019V1

Overview

STEVAL-IHM019V1 from STMicroelectronics is a complete 3-phase inverter demonstration board for low-power asynchronous and permanent magnet AC motors up to 50 W, operating from 115–230 VAC input, featuring 12–22 kHz PWM switching, EN61000-6-2/6-3 compliance, and built around the ST7FMC1K4T6 8-bit motor controller. It supports both 2-phase (90° phase shift) and 3-phase (120° phase shift) motor configurations.

For engineers reviewing the STEVAL-IHM019V1 datasheet, STEVAL-IHM019V1 pinout, STEVAL-IHM019V1 application, or STEVAL-IHM019V1 equivalent, this board serves as a validated reference design for cost-sensitive, high-efficiency motor drive implementations in residential HVAC, white goods, and condensate handling systems - with full schematic, BOM, and firmware architecture documented.

Technical Context

The board implements a sensorless field-oriented control (FOC)-capable 3-phase inverter using three half-bridge drivers (L6388) driving six STGP6NC60HD 600 V, 6 A IGBTs. Input rectification and filtering use a bridge rectifier (B250C1000DIL), X2-class EMI filter capacitors (C4, C5), and bulk storage (C6: 150 µF/400 V).

Motor control is executed by the ST7FMC1K4T6 MCU, which integrates dedicated motor control peripherals including three complementary PWM channels, analog comparators for current sensing (via R28/R30/R15 shunts), and on-chip op-amps for signal conditioning. The VIPer12AS flyback controller provides isolated +15 V and +5 V auxiliary supplies.

Key Specifications

Availability

STEVAL-IHM019V1 is available at Aetrix Electronics and suitable for water pump control in residential heating systems, condensate transfer in gas furnaces, and high-efficiency circulation in washing machine drain systems requiring stable component supply and reference-grade validation.

Supply support for STEVAL-IHM019V1 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, designing and manufacturing microcontrollers, power devices, sensors, and analog ICs for industrial, automotive, and consumer applications.

The STEVAL evaluation board series delivers application-specific, fully tested reference designs - this board targets cost-optimized, low-power motor drives where rapid prototyping and regulatory-compliant layout are critical.

FAQ

What motor types does STEVAL-IHM019V1 support?

It natively supports 3-phase asynchronous and permanent magnet AC motors up to 50 W. With firmware modification, it also drives 2-phase motors using two sinusoidal outputs with 90° phase displacement. Motor connection is via J3 ICC connector, and phase configuration is selected via hardware jumpers and software initialization.

Is the board compliant with EMC standards for residential use?

Yes - it meets EN61000-6-2 (immunity) and EN61000-6-3 (emission) requirements, verified with its integrated X2-class EMI filter (C4/C5), common-mode chokes (L1–L3), and shielded layout. No external filtering is required for Class B residential deployment.

Does STEVAL-IHM019V1 include firmware and source code?

Yes - ST provides complete firmware (in C and assembly), schematics, PCB layout files, BOM, and application notes (AN2822, AN2823). The ST7FMC1K4T6 firmware implements space-vector PWM and basic speed control, with open-source libraries for adaptation to custom motor parameters.

Can the board be used for closed-loop position/speed control?

It supports basic speed regulation via potentiometer (RV2) or external analog command. For closed-loop operation, users must add encoder/Hall sensor interface circuitry and modify firmware - the ST7FMC1K4T6 has dedicated timer inputs (PD2/PD6) and comparator outputs for zero-crossing detection and rotor position estimation.