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EVAL-L9942

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Evaluation board for L9942XP microstepping fully integrated motor driver

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$62.48
Parameter NameParameter Value
Operating RangeAutomotive
Target ApplicationBody and Convenience
Core ProductL9942XP
ECCN USEAR99
ECCN EUNEC
Packing TypeNot Applicable
ROHS Compliance GradeNot compliant
GradeIndustrial
Package NameCARD

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