STMicroelectronics AEK-MOT-SM81M1 Evaluation Board

STMicroelectronics AEK-MOT-SM81M1 Stepper Motor Driver Evaluation Board provides a reference design for driving a bipolar stepper motor in micro-stepping mode with coil voltage monitoring for stall detection. The AEK-MOT-SM81M1 Board features the automotive-grade L99SM81V stepper motor driver, embedded power MOSFETs, and a complete set of I/Os for MCU control and feedback signaling. The Board uses SPI communication through a 12-pin male connector or two 5-pin connectors on the board.

The AEK-MOT-SM81M1 Stepper Motor Driver Evaluation Board is part of the AutoDevKit initiative, and evaluation firmware is available for suitable microcontrollers such as the automotive-grade SPC5 series MCU on the AEK-MCU-C4MLIT1 control board.

Features

Board functionality based on L99SM81V programmable stepper motor driver for automotive applications
- Micro-stepping and hold functions
- BEMF monitoring for stall detection
- Programmable configuration via SPI
- 5V internal linear voltage regulator (output available on board connector)
6V to 28V input operating voltage range
1.35A max output current

Board reverse battery protection with STD95N4F3 MOSFET, which can be substituted with two optionally mounted diodes and a jumper
65mm x 81mm x 11mm board dimensions
WEEE and RoHS compliant
All ST components are qualified automotive grade
For automotive bipolar stepper motor applications
Part of the AutoDevKit™ initiative