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Empowered with a feature-rich STM32 motor control ecosystem for permanent magnet synchronous

motors (PMSM), brushless DC motors (BLDC)

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Wide configurability via motor control library (MCSDK), associated GUI and profiler

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Sensor less three-shunt or single-shunt vector field oriented control (FOC) algorithm (default)

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Suitable for ST’s high performance STM32 ZeST (zero speed full torque) algorithm, available on

request

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Option for sensor-less or sensored six step algorithm

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Tuning of drive dynamics

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Selection of operating parameters such as switching frequency

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Other parameter values for nominal and fault conditions, for example, over the current threshold

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Torque or speed mode operation

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Fully protected with overcurrent protection, undervoltage lockout and thermal protection

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Configuration examples with ST board designer, the JSON files are also provided

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Wide options for connectivity and user control

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Serial wire debug (SWD) port for debugging/programming

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Communication interfaces for SPI, UART, CAN /I2C pins

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Connector for buttons and trimmer along with one onboard pushbutton switch

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Fault, status LEDs and interface for external LED for illumination

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Options for enhancement with daughter cards

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Connector for mounting daughter board, for example, MEMS sensor board or memory

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Connector for increasing input voltage range by replacement of DC-DC converter

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Test land areas on the board for monitoring important signals or DAC outputs for debugging

Description

The STEVAL-PTOOL4A is a compact system designed to control a brushless DC (BLDC) or a permanent-magnet

synchronous motor (PMSM) in application such as a handheld battery-powered tool.

It works on the standard set of inputs such as throttle to control the motor torque/speed and to deliver power up to

250 W.

The board can be connected to a suitable 21 V / 250 W power tool motor. More peak power can be delivered with

heatsink or with arrangement for circulating air to achieve better power dissipation.

This reference design is ideal for high-performance motor control to realize power tools such as drill machines,

grinders, disc cutters, circular saws, leaf blowers, handheld mowers etc.

The small form factor and ample computing power make it suitable even for applications such as drones,

wheelchairs, home appliances, e-bicycles, and robotic platforms.

The STEVAL-PTOOL4A includes a high performance STM32G473CE MCU featuring integrated peripherals

especially optimized for motor control applications controlling a 3 phase full bridge converter consisting of six high

current MOSFETS through triple half bridge gate driver STDRIVE101.

The MCU features multiple ADC peripherals thereby enabling simultaneous sampling of motor phase currents

and back emf voltages.

The board has the capability to leverage on MCSDK library to provide options of both six-step or high

performance FOC algorithm with configurability.

STEVAL-PTOOL4A

DB5216 - Rev 1

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