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.