Single-Layered, Refrigerator Fan Reference Design Enabling High Efficiency Drive


Design files


This reference design is a singled-layered, cost-effective, small-form-factor, three-phase sinusoidal motor drive for sensored BLDC fan motors specified up to a maximum current of 1 A RMS at 18 V maximum. The unique, single-sided design helps to bring down the system cost. The on-board Hall sensors facilitate the board mounting inside the motor itself. The design also demonstrates the features of DRV10970 such as single hall operation for further cost optimization, sinusoidal drive with adaptive drive angle adjustment for better system efficinecy and overall performance, speed control via external pulse-width modulation (PWM) input which brings an ease of speed control, etc.

  • Minimized BOM components and overall cost by single layered design
  • Highly integrated system with protection features like motor lock detect, short circuit
  • Speed command for controlling fan speed using external PWM
  • Complete solution for spinning refrigerator fan
  • Design demonstrates DRV10970 device features, like adaptive drive angle adjustment, sensored, sinusoidal drive for better acoustics, efficiency and performance
  • Small form factor design with on-board Hall sensors with support for one- or 3-Hall operation
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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.

TIDUBH6.PDF (4412 K)

Reference design overview and verified performance test data


Detailed schematic diagram for design layout and components


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


Detailed overview of design layout for component placement


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


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


PCB layer plot file used for generating PCB design layout


PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Hall-effect latches & switches

DRV5013High voltage (up to 38V), high bandwidth (30kHz) Hall-effect latch

Data sheet: PDF | HTML
Integrated control BLDC drivers

DRV1097012-V nominal, 3-A peak sensored sinusoidal or trapezoidal control 3-phase BLDC motor driver

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Design guide Sensored BLDC Sinusoidal Drive Controller for Refrigerator Fans Design Guide Feb. 10, 2016

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