Application circuit of brushless DC motor pre-driver TC78B027FTG for fan drive

The board is designed to a doughnut shape according to the fan form. MOSFETs for the motor drive, brushless DC motor pre-driver IC TC78B027FTG, and the microcontroller for control are mounted on the board. This reference design provides circuit diagram, BOM, etc.

Block diagram of application circuit of brushless DC motor pre-driver TC78B027FTG for fan drive.

Features

  • The board is designed to a doughnut shape according to the fan form.
  • MOSFETs for the motor drive, brushless DC motor pre-driver IC TC78B027FTG, and the microcontroller for control are mounted on a board.
  • Compact board size (Diameter 40mm, 4 layer board)

Description

  • 6 MOSFETs are used for fan motor drive.
  • Brushless DC motor pre-driver IC TC78B027FTG is used for fan motor control.
  • Microcontroller TMPM373FWDUG is used for PWM generation and motor rotation control.
  • Hall device is mounted on the bottom side of the board.

Design Documents

Materials for designers, such as an overview of circuit operation and explanations of design considerations. Please click on each tab to view the contents.

Used Toshiba Items

Part Number Device Category Portion Usage Description
Small Low ON resistance MOSFETs 6 N-ch MOSFET, 30 V, 15 A, 0.0089 Ω@10V, SOT-1220(UDFN6B)
Brushless motor driver IC 1
TX03 1

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