AVR675: Configurable 3-Phase BLDC Fan Application Circuit Using ATtiny861A Microcontroller

Reference Design using part ATtiny861A by Microchip Technology

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Configurable Three Phase BLDC Fan (Sheet 1 of 2)
Configurable Three Phase BLDC Fan (Sheet 2 of 2)
Image 1 / 2

Manufacturer

Microchip Technology
  • Application Category
    Motor Control
  • Product Type
    Fan Motor Control

For End Products

  • Industrial Drives

Description

  • AVR675 Configurable 3-Phase BLDC Fan application circuit describes the implementation and use of a configurable 3-phase brushless DC (BLDC) fan using the ATtiny861A microcontroller implementing sensorless control. The complete hardware system includes a 12V 3-phase BLDC fan, a Configurable BLDC Fan board, a USB to UART bridge cable, an AC power adapter, the firmware running on the ATtiny861A and a PC based Motor Control Configuration Utility for customizing the fan for a particular application

Key Features

  • Motor Type
    DC Motor

Featured Parts (9)

Featured Parts
Part Number Manufacturer Type Description
LP2981IM5X-5.0/NOPB Texas Instruments Linear Regulators LDO Regulator Pos 5V 0.1A 5-Pin SOT-23 T/R Buy
LP2981IM5X-5.0/NOPB Texas Instruments Linear Regulators LDO Regulator Pos 5V 0.1A 5-Pin SOT-23 T/R Buy
ATTINY861A-SUR Microchip Technology Microcontrollers - MCUs MCU 8-bit AVR RISC 8KB Flash 2.5V/3.3V/5V 20-Pin SOIC W T/R Buy
ATTINY861A-XU Microchip Technology Microcontrollers - MCUs MCU 8-bit AVR RISC 8KB Flash 2.5V/3.3V/5V 20-Pin TSSOP Tube Buy
ATTINY861A-PU Microchip Technology Microcontrollers - MCUs MCU 8-bit AVR RISC 8KB Flash 2.5V/3.3V/5V 20-Pin PDIP W Tube Buy
ATTINY861A-MU Microchip Technology Microcontrollers - MCUs MCU 8-bit AVR RISC 8KB Flash 2.5V/3.3V/5V 32-Pin VQFN EP Tray Buy
ATTINY861A-SU Microchip Technology Microcontrollers - MCUs MCU 8-bit AVR RISC 8KB Flash 2.5V/3.3V/5V 20-Pin SOIC W Tube Buy
ATTINY861A-MUR Microchip Technology Microcontrollers - MCUs MCU 8-bit AVR RISC 8KB Flash 2.5V/3.3V/5V 32-Pin VQFN EP T/R Buy
ATTINY861A-XUR Microchip Technology Microcontrollers - MCUs MCU 8-bit AVR RISC 8KB Flash 2.5V/3.3V/5V 20-Pin TSSOP T/R Buy

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