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Home » NEWEST Products » New by Manufacturer » STMicroelectronics » EVAL-L9942 Evaluation Board - STM
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STMicroelectronics EVAL-L9942 Evaluation Board

STMicroelectronics EVAL-L9942 Evaluation Board

STMicroelectronics EVAL-L9942 Evaluation Board is designed to provide the user a platform to evaluate the 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.

  • 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): 7V ÷ 20V
  • 2 LEDs for monitoring VBatt and 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
  • STMicroelectronics