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Stellaris® Brushed DC Motor Control Reference Design with CAN (24V)

The Stellaris® Brushed DC Motor Control Reference Design Kit with CAN (RDK-BDC24) improves on the highly successful RDK-BDC design by providing variable speed control for both 12 V and 24 V brushed DC motors at up to 40 A continuous current, while adding a new RS232-based serial control input that also functions as a serial-to-CAN bridge. The RDK-BDC24 controller module (MDL-BDC24) includes a rich set of sensor interfaces, connectivity, and control options, including analog and quadrature encoder interfaces, high performance Controller Area Network (CAN) interfaces, and an RS232 port. The module uses highly optimized software and a powerful 32-bit Stellaris® microcontroller to implement open-loop voltage control as well as closed-loop control of speed, position, or motor current. The H-bridge on the MDL-BDC24 is run at high-frequency through the MCU's integrated PWM interface and enables DC motors to run smoothly and quietly over a wide speed range.

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The MDL-BDC24 is powered by the ARM® Cortex™-M3-based LM3S2616 microcontroller that provides efficient and deterministic performance while integrating CAN, UART, and advanced motion control capabilities. The MDL-BDC24 design also incorporates several high-quality analog components from Texas Instruments, including the SN65HVD1050 CAN Transceiver, MAX3221 RS232 Line Driver/Receiver, TPS54040 Swift DC/DC Converter, TPS73633 Voltage Regulator, and INA193 Current Shunt Monitor. The MDL-BDC24 is positioned into a wide variety of consumer and industrial applications, including factory automation devices and systems, mobile robots, household appliances, pumping and ventilation systems, and electric wheelchairs and mobility devices.

Kit Contents

The RDK-BDC24 ships as a complete, open-tooled reference design kit, including the MDL-BDC24 module encased in plastic with an installed cooling fan, a brush DC motor, necessary cables, and CD containing design files, quickstart, and firmware development package. Also available is the standalone MDL-BDC24, which ships with (just) the motor control module encased in plastic.

Image Communicate, monitor, and control the MDL-BDC24's serial interface using the BDC-COMM application (included on the RDK-BDC24 CD), plus connect to other MDL-BDC24 modules over CAN!

Kit Software and Documentation

Board Documentation and Schematics

Title Description Date Download
BDC-COMM-UG-02Stellaris® RDK-BDC24 Brushed DC Motor Control Module User's Manual03/02/10download
RMF-BDC24-RDK-1.1RDC-BDC24 README First03/02/10download
BD-BDC24-DS-0124-V Brushed DC Motor Control Module Data Sheet01/09/10download
BDC24-COMM-UM-01BDC-COMM User's Manual03/02/10download
RDK-BDC24 Rev B Hardware Design Package-BBoard Design Package for the RDK-BDC2401/19/10download

Software Updates

Title Description Date Download
RDK-BDC24-CD-540Reference Design Kit CD for the RDK-BDC2403/09/10download
SW-RDK-BDC24-536RDK-BDC24 Firmware Development Package01/26/10download
BDC-COMM-89BDC24-COMM Application02/18/10download

Are you a FIRST Robotics Competition (FRC) team? See the MDL-BDC24 "Black Jaguar" FRC Team Microsite.

While the RDK-BDC24 is a complete, open-tool reference design kit (complete with motor), you can also order the standalone motor control module - the MDL-BDC24.

Need to customize the open-tool source code in your reference design kit? You might need a few more items.

Features

The RDK-BDC24 ships as a ready-to-run, yet customizable reference design kit with the following features:

  • Quiet control of brushed DC motors
    • 15 kHz H-bridge frequency
    • Synchronous Rectification
  • Three options for open-loop voltage control
    • Industry-standard R-C servo type (PWM) interface
    • Controller Area Network (CAN) interface
    • RS232 serial interface
  • Two options for closed-loop, speed, position, or current control
    • Controller Area Network (CAN) interface
    • RS232 serial interface
  • CAN communication
    • Full configurability of module options
    • Real-time monitoring of current, voltage, speed, and other parameters
    • Load firmware over RS232/CAN
  • RS232 serial communication
    • Bridges an RS232-enabled device to the CAN
    • Directly interfaces to a PC serial port or National Instruments cRIO
  • Limit switch inputs for forward and reverse directions
  • Firmware features
    • Full configurability of closed-loop module parameters
    • Real-time monitoring of sensor data including motor current, encoder position or speed, and limit switch state
  • Status LED indicates run, direction, and fault conditions
  • Motor brake/coast selector
  • Quadrature encoder input (QEI) and analog input
  • Color-coded screw terminals for all power wiring
  • Easy to customize using tools supporting the MDL-BDC24 from Keil, IAR, Code Sourcery, or Code Red (using a Stellaris evaluation kit or preferred ARM® Cortex™-M3 debugger)