In unipolar stepper motors, stator windings share a common terminal; the free terminal of each winding is connected to a separate power switch and the current is allowed to flow in one direction through the motor windings. Diodes are used to clamp the voltage across the switches at turn-off. ST’s portfolio features a wide selection of power MOSFETs, diodes and microcontrollers to build a discrete implementation of a unipolar stepper motor driver.
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Combining the X-NUCLEO-IHM01A1 (expansion board based on the L6474) with the NUCLEO-F030R8, (for istance) the user can evaluate a stepper motor drive. It provides an affordable and easy-to-use solution for motor control driving for stepper motors.Solution Components
Part Number Description Status Core Products Price (US$)* Order / DownloadX-NUCLEO-IHM01A1 Key features
- Voltage range from 8 V to 45 V
- Phase current up to 3 Ar.m.s.
- Power OK and fault LEDs
- Advanced current control
- Fully protected power stage
- Up to 1/16 microstepping resolution
- Compatible with Arduino UNO R3 connector
- Compatible with STM32 Nucleo boards
- Suitable for multi-motor solutions
- RoHS compliant
Stepper motor driver expansion board based on L6474 for STM32 Nucleo ActiveL6474PD 12.25 Buy now NUCLEO-F030R8 Key features
- Common features
- STM32 microcontroller in LQFP64 package
- 1 user LED shared with Arduino™
- 1 user and 1 reset push-buttons
- 32.768 kHz crystal oscillator
- Board connectors:Arduino™ Uno V3 expansion connectorST morpho extension pin headers for full access to all STM32 I/Os
- Flexible power-supply options: ST-LINK, USB VBUS or external sources
- On-board ST-LINK debugger/programmer with USB re-enumeration capability: mass storage, Virtual COM port and debug port
- Comprehensive free software libraries and examples available with the STM32Cube MCU Package
- Support of a wide choice of Integrated Development Environments (IDEs) including IAR™, Keil® and GCC-based IDEs
- Board-specific features
- External SMPS to generate Vcore logic supply
- 24 MHz HSE
- Board connectors:External SMPS experimentation dedicated connectorMicro-AB or Mini-AB USB connector for the ST-LINKMIPI® debug connector
- Arm® Mbed Enabled™ compliant
STM32 Nucleo-64 development board with STM32F030R8 MCU, supports Arduino and ST morpho connectivity ActiveSTM32F030R8 10.12 Buy now X-CUBE-SPN1 Key features
- Driver layer for complete management of the L6474 microstepping motor driver integrated in the X-NUCLEO-IHM01A1 expansion board
- Examples for controlling up to three stepper motors
- Easy portability across different MCU families, thanks to STM32Cube
- Free, user-friendly license terms
Stepper motor driver software expansion for STM32Cube Active- Part Number Supplier Download X-CUBE-SPN1 ST X-CUBE-SPN1Description:
Stepper motor driver software expansion for STM32CubePrice (US$)*
-Part Number Supplier Download X-CUBE-SPN1 ST
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| Part Number | Description | |
|---|---|---|
| EVALSTDRV600HB8 | Demonstration board kit for L638xE and L639x high-voltage gate drivers | Quick view |
| EVALSTGAP1AS | STGAP1AS evaluation board | Quick view |
| EVAL6491HB | Demonstration board for L6491 gate driver with smart shut down feature | Quick view Key Features
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| EVAL6393FB | Low voltage full bridge reference design board featuring L6393 advanced high-voltage gate driver | Quick view Key Features
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| EVAL6498L | Evaluation board for the L6498L gate driver | Quick view Key Features
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| EVAL6494L | Demonstration board for L6494L gate driver | Quick view Key Features
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Part Number
EVALSTDRV600HB8
Demonstration board kit for L638xE and L639x high-voltage gate drivers
EVALSTGAP1AS
STGAP1AS evaluation board
EVAL6491HB
Demonstration board for L6491 gate driver with smart shut down feature
EVAL6393FB
Low voltage full bridge reference design board featuring L6393 advanced high-voltage gate driver
EVAL6498L
Evaluation board for the L6498L gate driver
EVAL6494L
Demonstration board for L6494L gate driver
Embedded Software
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Picture Part number Manufacturer Description 
X-CUBE-SPN1 ST Stepper motor driver software expansion for STM32Cube Part NumberStepper motor driver software expansion for STM32Cube
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