Features

•

7 - 45 V motor voltage rating supported

•

Recommended for power tools supplied from 2S to 6S batteries

•

•

STSPIN32F0B advanced 3-phase motor controller tailored for single-shunt

applications

•

STL180N6F7 60 V, 1.9 mΩ N-channel power MOSFET

•

Ultra-low standby current below 1µA thanks to an external turn-on/off trigger

•

Heat sink for improved power dissipation

•

Extremely compact footprint (70 mm x 30 mm)

•

Input connector for Hall effect sensors and encoder

•

Plug-and-play capability through six-step firmware with Hall effect sensor

feedback

•

Six-steps sensorless control available through dedicated BEMF sensing circuitry

and sensorless/sensored Field Oriented Control

•

Speed regulation through an external trimmer

•

Protections: thermal shutdown, UVLO, overcurrent and reverse biasing of power

stage outputs

•

SWD debug interface and direct firmware update (DFU) via UART

Description

This STEVAL-PTOOL1V1 compact 70 mm x 30 mm reference design board is

tailored for low voltage power tools driven by 3-phase brushless motors, supplied

by 2S to 6S batteries. The design is based on the STSPIN32F0B controller and

STL180N6F7 (or STL220N6F7) power MOSFET.

The board is ready for sensorless and sensored FOC, and can be configured for six-

step sensorless control through available BEMF sensing circuitry. The accompanying

six-step STSW-PTOOL1V1 firmware uses position feedback from Hall effect sensors,

with debugging and programming capability available through the SWD interface and

the direct firmware update feature.

The board can deliver up to 15 A continuous current, thanks also to the optimal

thermal dissipation provided by an embedded heatsink. It embeds a fast power-on

circuit that connects and disconnects the battery, allowing standby consumption

below 1 μA for extended battery duration. Several protection features are included,

such as thermal shutdown, undervoltage lockout, overcurrent protection with

programmable threshold and reverse biasing of power stage outputs.

This reference design is predominately intended for power tools, but is very

suitable for any battery-powered application involving similar architecture, rating and

performance. A potentiometer input for speed variation is available.

Compact reference design for low voltage brushless power tools based on

STSPIN32F0B

STEVAL-PTOOL1V1

Data brief

DB4293 - Rev 2 - January 2021

For further information contact your local STMicroelectronics sales office.

www.st.com

Product summary

Reference design

based on

STSPIN32F0B for

power tools driven by

LV BLDC motors

STEVAL-

PTOOL1V1

Reference firmware

for low voltage three-

phase brushless DC

motors with STEVAL-

PTOOL1V1

STSW-

PTOOL1V1

N-channel 60

V STripFET F7

Power MOSFET

in PowerFLAT 5x6

package

STL180N6F7

Advanced single shunt

BLDC controller with

embedded STM32

MCU

STSPIN32F0B

N-channel 60

V STripFET F7

Power MOSFET

in PowerFLAT 5x6

package

STL220N6F7

Applications

Home and

Professional

Appliances

Industrial Motor

Control

Industrial Tools