TIDA-00525

12V BLDC Server Fan with Sensorless Sinusoidal Control

TIDA-00525

Design files

Overview

This is a reference design for a 12V 3-phase brushless DC fan, intended for server cooling applications.  It is based on a single IC controller, the DRV10975, which drives sensorless BLDC motors with sinusoidal current that minimizes acoustic noise and torque ripple.  The design requires no microcontroller or firmware, enabling a faster time to market.

Features
  • Cost-optimized and high performance.
  • Runs Sunon's standard off the shelf  BLDC  fan (SG40281B1), and PCB matches the form factor.
  • Supports 20k RPM with 12V 7W input.
  • Sinusoidal sensor-less control at 25kHz for minimized torque ripple and audible noise.
  • Flexible support across other fan models with its tunable register settings.
  • Design has been built and proven.

Design files & products

Design files

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

TIDU860.PDF (574 K)

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

TIDRDG3.PDF (136 K)

Detailed schematic diagram for design layout and components

TIDRDG4.PDF (198 K)

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

TIDRDG5.PDF (61 K)

Detailed overview of design layout for component placement

TIDRDG7.ZIP (150 K)

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

TIDC973.ZIP (149 K)

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

TIDRDG6.PDF (300 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Brushless DC (BLDC) motor drivers

DRV1097512-V nominal, 2-A peak sensorless sinusoidal control 3-phase BLDC motor driver

Data sheet document-pdfAcrobat PDF open-in-new HTML

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Software

Support software

TIDA-00525 Motor Parameter (CSV File) – TIDC974.ZIP (7 K)

Technical documentation

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Type Title Date
Test report TIDA-00525 Test Results Mar. 17, 2015

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