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.

 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 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