STMicroelectronics STEVAL-IHM013V1

Overview

STEVAL-IHM013V1 from STMicroelectronics is a ready-to-use demonstration board for universal motor control in low-end vacuum cleaners, built around the ST7FLiteUS5 8-bit microcontroller and BTB12-600BW TRIAC. It implements phase-angle AC motor speed regulation with full-bag detection, soft-start compliance to IEC 61000-3-3, current sensing via 0.05Ω/5W shunt, and manual speed adjustment via 10kΩ potentiometer.

For engineers reviewing the STEVAL-IHM013V1 datasheet, STEVAL-IHM013V1 pinout, STEVAL-IHM013V1 application, or STEVAL-IHM013V1 equivalent, this board provides validated hardware/software reference for cost-sensitive phase-control motor drives in home appliances requiring inrush current limiting, overcurrent protection, and simple user interface (pushbutton + LED status).

Technical Context

The board uses zero-crossing detection and microcontroller-based firing angle computation to drive the BTB12-600BW TRIAC, enabling precise AC phase-cut control of universal motors up to 1200W. Sensing is performed via a 0.05Ω/5W shunt resistor (R13) feeding into the ST7FLiteUS5's AIN1–AIN4 analog inputs, while full-bag detection relies on a flame-proof resistor (R3) and opto-coupled signal conditioning.

Power is derived from a capacitive supply (C5: 330nF/275VAC) delivering regulated +5V to the ST7FLiteUS5 and peripheral logic. The design excludes closed-loop speed feedback, relying instead on open-loop phase-angle tuning calibrated for vacuum cleaner load profiles and thermal derating of the BTB12-600BW at 12A RMS.

Key Specifications

Availability

STEVAL-IHM013V1 is available at Aetrix Electronics and suitable for vacuum cleaner development, universal motor control prototyping, and phase-angle dimming/motor drive validation requiring stable component supply and legacy ST reference design support.

Supply support for STEVAL-IHM013V1 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.

This board belongs to ST's STEVAL (ST Evaluation) series - purpose-built reference platforms that integrate validated hardware, firmware, and documentation to accelerate adoption of ST's microcontrollers and power semiconductors in appliance motor control.

FAQ

What is the maximum motor power rating supported by STEVAL-IHM013V1?

The board is designed for universal motors up to 1200W at 230VAC, limited by the BTB12-600BW TRIAC's 12A RMS rating and thermal design of the PCB layout. Derating is required above 60°C ambient or with poor ventilation. Motor inrush peaks are managed via soft-start firmware to stay within IEC 61000-3-3 limits.

Does STEVAL-IHM013V1 include closed-loop speed regulation?

No. The board implements open-loop phase-angle control only - speed is adjusted manually via potentiometer and fixed per load profile. No tachometer input, back-EMF sensing, or encoder interface is present. Closed-loop operation would require external feedback hardware and firmware modification beyond the delivered reference code.

Can the ST7FLiteUS5 firmware be reprogrammed or modified?

Yes. The ST7FLiteUS5 is ISP-capable via the ICC interface (J7 header). ST provides source code and Keil C project files in the official application note AN2792, enabling full customization of firing angle algorithms, protection thresholds, and user interface behavior using standard ST7 toolchains.

Is STEVAL-IHM013V1 still in active production?

No - STMicroelectronics has marked STEVAL-IHM013V1 as obsolete (as noted in the June 2008 data brief). However, Aetrix Electronics maintains legacy inventory and supports design continuity with full documentation, schematic, BOM, and firmware archives for ongoing maintenance and replacement programs.