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TIDM-LPSM

Low Power Micro Stepper Motor Driver Reference Design Using FRAM

Design files

TIDM-LPSM

Design files

Overview

Controlled by the  MSP-EXP430FR5969 FRAM LaunchPad, this 20-pin boosterpack utilizes the DRV8836 motor driver for operating low-voltage stepper motors with minimal power consumption to better optimize battery life.  Micro stepping logic provides for smooth motor steps, a INA199 current shunt monitor provides a valuable motor status feedback loop, and MSP430FR5969 FRAM technology allows for saved motor states in the event of power supply disconnection.

Features

 

  • Along with the DRV8836 sleep state, the MSP430FR5969 MCU’s LPM3 and LPM3.5 modes provide longer battery discharge times with average current consumption of 20 μA and 10 μA, respectively
  • Beneficial motor feedback produced by the bi-directional INA199 current shunt monitor featuring low offset and minimal error
  • Motor states left uninterrupted by power cycles due to MSP FRAM technology
  • EnergyTrace++ technology used to measure and optimize low power consumption
  • Java-based GUI included allow the user to design a repetitive 24-hour motor operation schedule by employing the MSP RTC
  • Tested 20-pin Boosterpack hardware design that can be utilized on any TI LaunchPad

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    A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

    Design files & products

    Design files

    Download ready-to-use system files to speed your design process.

    download Design guide — TIDM-LPSM
    TIDUA65.PDF (1583 K)

    Reference design overview and verified performance test data

    download Schematic — TIDM-LPSM
    TIDRI87.PDF (34 K)

    Detailed schematic diagram for design layout and components

    download Bill of materials (BOM) — TIDM-LPSM
    TIDRI88.PDF (204 K)

    Complete listing of design components, reference designators, and manufacturers/part numbers

    download Assembly drawing — TIDM-LPSM
    TIDRI89.PDF (118 K)

    Detailed overview of design layout for component placement

    download CAD/CAE symbol — TIDM-LPSM
    TIDRI91.ZIP (280 K)

    Files used for 3D models or 2D drawings of IC components

    download Gerber file — TIDM-LPSM
    TIDCB88.ZIP (40 K)

    Design file that contains information on physical board layer of design PCB

    download PCB layout — TIDM-LPSM
    TIDRI90.PDF (51 K)

    PCB layer plot file used for generating PCB design layout

    Products

    Includes TI products in the design and potential alternatives.

    MSP430 microcontrollers

    MSP430FR5969 — 16 MHz MCU with 64KB FRAM, 2KB SRAM, AES, 12-bit ADC, comparator, DMA, UART/SPI/I2C, timer

    Data sheet: PDF | HTML
    Analog current-sense amplifiers

    INA199 — 26V, bi-directional current sense amplifier

    Data sheet: PDF | HTML

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    Software

    Support software

    TIDCB89 — TIDM-LPSM Firmware

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    Technical documentation

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    * Design guide Low-Power Micro Stepper Motor Driver Using FRAM MCU Design Guide Jun. 19, 2015

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