This reference design provides a flexible stepper motor system designed to drive up to two stepper motors, or 8 peripherals, while reducing the number of GPIOs needed from the host controller reducing overall cost. The system is suitable for applications requiring stepper motors or coils up to 50V, and a max current of 2.5A (with all channels enabled). This design features multiple configurations for outputs, allowing multiple peripherals to be driven (i.e. 1 motor, 1 buzzer, 1 relay, and 2 LEDs). It is adaptable to automated louver control in Heating Ventilation and Air Conditioning (HVAC) systems as well as control of relays, buzzers, and LEDs. This concept could also be more broadly expanded to drive any number of channels for other building automation designs including louver control in smart ventilation systems, automated window blind tilting, as well as pan and tilt control for IP cameras.
Features
Subsystem Adaptable to a Wide Range of Building Automation Applications
Only 3 GPIO Pins Required to Drive Any Multiple of 8 Channels
Expandable to Desired Number of Drive Channels
Adaptable across a wide range of drive applications - stepper motors, relays, LEDs
High-Voltage (up to 50V), High-Current (up to 500mA per channel) drive outputs
Texas Instruments and Accelerated Designs, Inc. have collaborated together to provide TI customers with schematic symbols and PCB layout footprints for TI products.
Step 2: Download the Symbol and Footprint from the CAD.bxl file table.
Texas Instruments and Accelerated Designs, Inc. have collaborated together to provide TI customers with schematic symbols and PCB layout footprints for TI products.
Both PCB footprints and schematic symbols are available for download in a vendor neutral format, which can then be exported to the leading EDA CAD/CAE design tools using the Ultra Librarian Reader. The reader is available as a (free download.).
The UL Reader is a subset of the Ultra Librarian toolset that can generate, import, and export components and their attributes in virtually any EDA CAD/CAE format.
