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  • The EVAL-L9942 is the Evaluation Board designed to provide the user a platform to evaluate the device L9942.

    The L9942 is a motor driver for bipolar stepper motors with micro-stepping and programmable current profile look-up-table to allow a flexible adaptation of the motor characteristics and intended operating conditions.
    Different current profiles can be chosen depending on target criteria: audible noise, vibrations, rotation speed or torque.
    The decay mode used in PWM-current control circuit can be programmed to have slow, fast, mixed and auto-decay.
    The programmable stall detection is useful to avoid running the motor too long time in stall position minimizing the noise.
    The EVAL-L9942 board provides all the inputs and outputs capabilities necessary to drive correctly a bipolar stepper motor and also to monitoring diagnostic functionalities.
    The board can be connected to the discovery boards developed for the SPC56 microcontroller.

    Key Features

    • Input signal connector compatible with the SPC56 Discovery boards. Possibility to connect the board to further microcontroller discovery or control boards by a simple adaptor.
    • Two output terminal blocks.
    • Wide supply voltage range (VBatt): 7 V ÷ 20 V.
    • 2 LEDs for monitoring VBattand EN signal.
    • Device controlled and programmed via SPI.
    • L9942 diagnostic functions via SPI.
    • Test points to monitoring both input signals (SPI, PWM, EN, StepClock) and the four outputs (out power stage).
    • No heat-sink is required

Sample & Buy

Part Number
Marketing Status
Budgetary Price (US$)*
Quantity
ECCN (US)
Country of Origin
Order from Distributors
Order from ST
EVAL-L9942
Active
59 1 EAR99 - No availability of distributors reported, please contact our sales office

EVAL-L9942

Marketing Status

Active

Unit Price (US$)

59

Unit Price (US$)

59.0*

Quantity

1

ECCN (US)

EAR99

Country of Origin

-

(*) 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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Related Applications

Industrial Motor Control

Automotive Motor Control

Embedded Software

    • Part Number

      EVAL-L9942 Graphical User Interface

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DB2143
      EVAL-L9942
      2.0
      319.16 KB
      PDF
      DB2143

      EVAL-L9942

    • Description Version Size Action
      UM1707
      EVAL-L9942
      3.0
      2.52 MB
      PDF
      UM1947
      EVAL-L9942 Graphical User Interface
      2.0
      5.23 MB
      PDF
      UM1707

      EVAL-L9942

      UM1947

      EVAL-L9942 Graphical User Interface

Hardware Resources

    • Description Version Size Action
      EVAL-L9942_pcb layout
      1.12 MB
      PDF

      EVAL-L9942_pcb layout

    • Description Version Size Action
      EVAL-L9942 BOM 1.0
      43.04 KB
      PDF

      EVAL-L9942 BOM

    • Description Version Size Action
      EVAL-L9942 schematic 3.0
      245.67 KB
      PDF

      EVAL-L9942 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**
EVAL-L9942
Active
Not compliant -

EVAL-L9942

Package:

Not compliant

Material Declaration**:

Marketing Status

Active

RoHS Compliance Grade

Not compliant

WEEE Compliant

-

(**) 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.