Stepper motor driver evaluation board based on the L99SM81V for automotive applications

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  • The AEK-MOT-SM81M1 evaluation board is designed to drive a bipolar stepper motor in micro-stepping mode, with coil voltage monitoring for stall detection.

    This application board features the automotive-grade L99SM81V stepper motor driver with embedded power MOSFETs and a comprehensive set of I/Os for MCU control and feedback signaling using SPI communication through a 12-pin male connector or two 5-pin connectors on the board.
    The board is developed as part of the AutoDevKit initiative, and evaluation firmware is available for suitable microcontrollers such as the automotive-grade SPC5 series MCU on the AEK-MCU-C4MLIT1 control board.

    Key Features

    • Board functionality based on L99SM81V programmable stepper motor driver for automotive applications:
      • with micro-stepping and hold functions
      • BEMF monitoring for stall detection
      • programmable configuration via SPI
      • 5 V internal linear voltage regulator (output available on board connector)
    • Board reverse battery protection with STD95N4F3 MOSFET, which can be substituted with two optionally mounted diodes and a jumper
    • Input operating voltage range from 6 V to 28 V
    • Output current up to 1.35 A
    • Board size: 65 mm length x 81 mm width x 11 mm maximum component height
    • WEEE and RoHS compliant
    • All ST components are qualified Automotive grade
    • Part of the AutoDevKit™ initiative
    • Applications: automotive bipolar stepper motor

Sample & Buy

Part Number
Marketing Status
Budgetary Price (US$)*
Quantity
ECCN (US)
Country of Origin
Order from Distributors
Order from ST
AEK-MOT-SM81M1
Active
39.0 1 EAR99 ITALY Check Availability

Distributor availability ofAEK-MOT-SM81M1

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 19 1 Order Now
AVNET AMERICA 10 0 Order Now
FUTURE WORLDWIDE 10 1 Order Now
MOUSER WORLDWIDE 20 1 Order Now

Distributor reported inventory date: 2019-12-10

Distributor Name

DIGIKEY

Stock

19

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

10

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

10

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

20

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-12-10

Buy now

AEK-MOT-SM81M1

Marketing Status

Active

Unit Price (US$)

39

Unit Price (US$)

39.0*

Distributor availability ofAEK-MOT-SM81M1

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 19 1 Order Now
AVNET AMERICA 10 0 Order Now
FUTURE WORLDWIDE 10 1 Order Now
MOUSER WORLDWIDE 20 1 Order Now

Distributor reported inventory date: 2019-12-10

Distributor Name

DIGIKEY

Stock

19

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

10

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

10

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

20

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-12-10

Quantity

1

ECCN (US)

EAR99

Country of Origin

ITALY

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

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00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DB3986
      Stepper motor driver evaluation board based on the L99SM81V for automotive applications
      1.0
      881.2 KB
      PDF
      DB3986

      Stepper motor driver evaluation board based on the L99SM81V for automotive applications

Hardware Resources

    • Description Version Size Action
      AEK-MOT-SM81M1 GERBER 1.0
      157.19 KB
      ZIP

      AEK-MOT-SM81M1 GERBER

    • Description Version Size Action
      AEK-MOT-SM81M1 BOM 1.0
      48.17 KB
      PDF

      AEK-MOT-SM81M1 BOM

    • Description Version Size Action
      AEK-MOT-SM81M1 SCHEMATIC 1.0
      101.37 KB
      PDF

      AEK-MOT-SM81M1 SCHEMATIC

Legal

    • Description Version Size Action
      Evaluation products license agreement 1.6
      74.12 KB
      PDF

      Evaluation products license agreement

Part Number Marketing Status RoHS Compliance Grade WEEE Compliant Material Declaration**
AEK-MOT-SM81M1
Active
Ecopack2 Yes

AEK-MOT-SM81M1

Package:

Ecopack2

Material Declaration**:

Marketing Status

Active

RoHS Compliance Grade

Ecopack2

WEEE Compliant

Yes

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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