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Single PWM input brushless DC motor control TI reference design

TIDA-00645

Overview

This design is a sensored three-phase brushless DC motor controller that uses a single PWM input to control speed and three active-high Hall sensors to detect rotor position. The DRV8305's integrated communication table simplifies the microcontroller firmware required for correct commutation. The DRV8305 automatically handles dead time insertion and gate drive current control, both of which are adjustable through the driver SPI interface.

characteristic

● Operating voltage is 12 – 24 volts
● Control scheme requires only a single PWM signal and three digital Hall states
● Direct connection to active-high Hall sensors via on-board headers and pull-up resistors
● SPI communication is used between MCU and driver to quickly adjust parameters.
● In-circuit flashing of microcontroller firmware via onboard JTAG connector
● Small 3 x 2-inch board includes both power and control stages

Backlog Impt notice changes Backlog Impt notice changes end

Blockdiagram

Design Files

Documentation

TIDA-00645 Test Results

Related Devices

Devices	Class	introduce	Datasheet
PTN0603E2640BSTS	Passive components;The resistor	Fixed Resistor, Thin Film, 0.15W, 264ohm, 75V, 0.1% +/-Tol, 25ppm/Cel, Surface Mount, 0603, CHIP	Download
DRV8305	semiconductor;Driver IC	DRV8305 Three Phase Gate Driver with Three Integrated Current Shunt Amplifiers	Download
MSP430G2553	semiconductor;The embedded processor and controller	MSP430G2553 MSP430G2x53, MSP430G2x13 Mixed Signal Microcontroller	Download

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Update:2024-11-15 00:09:13

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