STMicroelectronics X-NUCLEO-IHM11M1

Overview

X-NUCLEO-IHM11M1 from STMicroelectronics is a motor driver expansion board for STM32 Nucleo development platforms, integrating the STSPIN230 triple half-bridge IC to drive 3-phase BLDC motors at 1.8–10 V supply, delivering up to 1.3 Arms per phase with 0.4 Ω typ. R_DS(ON) (HS+LS), and featuring non-dissipative overcurrent protection, thermal shutdown, and <80 nA standby current - used in robotics and portable medical equipment evaluation.

For engineers reviewing the X-NUCLEO-IHM11M1 datasheet, X-NUCLEO-IHM11M1 pinout, X-NUCLEO-IHM11M1 application, or X-NUCLEO-IHM11M1 equivalent, this page delivers verified mechanical layout, power-stage interface mapping, STSPIN230-based control timing behavior, and board-level protection implementation details - critical for rapid prototyping of battery-powered BLDC motor control systems.

Technical Context

The X-NUCLEO-IHM11M1 implements a complete 3-phase BLDC gate-drive solution using the STSPIN230 IC, which embeds three independent half-bridges with integrated interlocking logic to prevent shoot-through, programmable disable timing via external R_EN/C_EN, and analog current sensing through shared SENSEU/SENSEVW pins. It operates without external bootstrap capacitors due to internal charge-pump-free architecture.

Board-level design includes 22 µF/16 V bulk capacitance (CSPOL), 2.2 µF/16 V decoupling (CS), 330 mΩ sense resistor (RSNS), and configurable standby/reset via STBY\RESET input. All logic inputs are 5 V-tolerant, and EN\FAULT provides open-drain fault signaling compatible with STM32 GPIOs.

Key Specifications

Availability

X-NUCLEO-IHM11M1 is available at Aetrix Electronics and suitable for robotics motion control, portable medical pump actuation, and educational BLDC motor development requiring stable component supply and full Nucleo ecosystem compatibility.

Supply support for X-NUCLEO-IHM11M1 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.

The X-NUCLEO series targets rapid prototyping of STM32-based systems, with the IHM11M1 specifically engineered to evaluate high-efficiency, low-voltage BLDC motor control using ST's integrated gate-driver ICs - emphasizing ease-of-use, safety, and out-of-box validation.

FAQ

Does X-NUCLEO-IHM11M1 support sensorless BLDC commutation?

Yes - the board exposes all six INxH/INxL control inputs and SENSEU/SENSEVW pins required for implementing sensorless FOC or trapezoidal commutation algorithms on the host STM32 MCU. No onboard Hall or encoder interfaces are included; current sensing and timing control are fully software-defined via the Nucleo platform.

What is the maximum motor voltage supported by X-NUCLEO-IHM11M1?

The board supports motor supply voltages up to 10 V DC, matching the STSPIN230's absolute maximum VS rating. The VS input accepts 1.8–10 V, and the board includes reverse-polarity protection diode and 16 V-rated input capacitors (CS and CSPOL) to ensure safe operation within this range.

Can X-NUCLEO-IHM11M1 be used with non-STMicroelectronics MCUs?

Yes - it is electrically compatible with any 3.3 V or 5 V microcontroller providing 5 V-tolerant GPIOs for INxH/INxL, EN\FAULT, and STBY\RESET signals. Pinout follows Arduino Uno R3 and ST morpho standards, enabling direct connection to third-party development boards with appropriate level-shifting if needed.

Is thermal performance validated for continuous 1.3 Arms operation?

Yes - ST's reference design achieves continuous 1.3 Arms per phase at ambient 25 °C with natural convection on a standard 2-layer PCB, leveraging the STSPIN230's 9.1 °C/W R_thJCbot and the board's exposed pad soldered to ground plane with four 300 µm vias - documented in ST AN5073 and the IHM11M1 user manual.