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TIDA-00112

5V, 3-Phase, Sensorless Motor System With Variable Speed Control

Design files

TIDA-00112

Design files

Overview

This reference design provides a simple way to spin and control a 5V, 3-phase, BLDC fan motor with minimum development time and overhead. It utilizes the DRV10866, a sensorless BLDC motor driver, for the power stage and a TLC555 timer to provide a variable duty cycle PWM signal for speed control. The DRV10866 uses a 150 degree sensorless BEMF control scheme that takes away the need for external sensors on the motor.

Features
  • Low Voltage, 150 Degree BEMF Sensorless Motor Control
  • Speed Control Through Onboard Potentiometer
  • Compact Board Size (Can Fit Onto Fan Itself)
  • Can Be Powered From Micro-USB Cable, No Power Supply Required
  • Low Development Overhead, Design is Orderable and Tested
  • No Firmware Required, No MCU Required
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Design files & products

Design files

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

download Test report — TIDA-00112
TIDU004.PDF (162 KB)

Test results for the reference design, including efficiency graphs, test prerequisites and more

download Bill of materials (BOM) — TIDA-00112
TIDR293.PDF (102 KB)

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

download Schematic — TIDA-00112
TIDC025.ZIP (139 KB)

Detailed schematic diagram for design layout and components

download Schematic — TIDA-00112
TIDR292.PDF (68 KB)

Detailed schematic diagram for design layout and components

Products

Includes TI products in the design and potential alternatives.

Integrated control BLDC drivers

DRV10866 — 5-V nominal, 0.85-A peak sensorless trapezoidal control, 3-phase BLDC motor driver

Data sheet: PDF | HTML

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Hardware

Evaluation board

DRV10866EVM — DRV10866 Evaluation Module for 5V, 3-Phase, Sensorless, Brushless DC Motor Driver

The DRV10866EVM (evaluation module) provides a cost effective, low voltage, sensorless-solution for running a 3-phase BLDC motor in 150 degree trapezoidal commutation.
EVM user’s guide: PDF
Supported products & hardware

Supported products & hardware

Hardware development
Reference design
TIDA-00112 — 5V, 3-Phase, Sensorless Motor System With Variable Speed Control
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DRV10866EVM — DRV10866 Evaluation Module for 5V, 3-Phase, Sensorless, Brushless DC Motor Driver

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Hardware development
Reference design
TIDA-00112 — 5V, 3-Phase, Sensorless Motor System With Variable Speed Control
TI’s Standard Terms and Conditions for Evaluation Items apply.

Technical documentation

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* Test report TIDA-00112 Test Results Nov 13, 2013

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