1-PWM Brushless DC Motor Control Reference Design


Design files


This design is a 3-phase sensored Brushless DC Motor controller that uses a single PWM input for controlling speed and three active-high hall sensors for rotor position detection.  The DRV8305's integrated commutation table simplifies the microcontroller firmware required for proper commutation.  The DRV8305 automatically handles dead time insertion and gate drive current control, both of which can adjusted using the drivers SPI interface.

  • 12 – 24 Volt Operation
  • Control scheme requires only a single PWM Signal and three digital hall states
  • Onboard header and pull-up resistors for direct connection of active-high Hall Sensors
  • SPI communication between MCU and Driver for fast parameter adjustments
  • Onboard JTAG header for in-circuit flashing of microcontroller firmware
  • Small 3 x 2 inch board includes both power and control stage
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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.


Reference design overview and verified performance test data

TIDRI19.PDF (437 K)

Detailed schematic diagram for design layout and components

TIDRI20.PDF (216 K)

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

TIDRI21.PDF (180 K)

Detailed overview of design layout for component placement

TIDRI23.ZIP (840 K)

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

TIDCB68.ZIP (442 K)

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

TIDRI22.PDF (1367 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

BLDC drivers

DRV830545-V max 3-phase smart gate driver with current shunt amplifiers & SPI

Data sheet: PDF | HTML

CSD18533Q5A60-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 5.9 mOhm

Data sheet: PDF | HTML
MSP430 microcontrollers

MSP430G255316 MHz MCU with 16KB Flash, 512B SRAM, comparator, UART/SPI/I2C, timer

Data sheet: PDF

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Technical documentation

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Type Title Date
* Design guide TIDA-00645 Test Results Oct. 05, 2015

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