Tiny board jumpstarts motor-drive design

ST’s motor-drive reference design packs a 3-phase gate driver, an STM32G0 MCU, and a 750-W power stage on a circular PCB that is just 50-mm in diameter. The small form factor of the EVLDRIVE101-HPD board makes it suitable for both home and industrial equipment. It easily fits into handheld vacuums and power tools, as well as drones, robots, and drives for industrial equipment.

Leveraging the company’s STDRIVE101 3-phase gate driver, the reference design offers a variety of driving techniques for brushless motors, including trapezoidal or field-oriented control, with sensored or sensorless rotor-position detection. The IC contains three half bridges with 600-mA source/sink capability and operates from 5.5 V to 75 V.

The power stage of the EVLDRIVE101-HPD is based on 60-V N-channel power MOSFETs with output current up to 15 A_RMS. Their low 1.2-mΩ on-resistance allows operation at very high load current, enabling power delivery up to 750 W.

Developers can use the STM32G0 microcontroller’s single-wire-debug (SWD) interface to interact with it, while support for direct firmware updates enables easy application of bug fixes and new features.

The EVLDRIVE101-HPD motor-control reference design costs $92.

EVLDRIVE101-HPD product page

STMicroelectronics

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