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TIDA-00525

12V BLDC Server Fan with Sensorless Sinusoidal Control

Design files

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.
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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.

download Test report — TIDA-00525
TIDU860.PDF (574 K)

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

download Schematic — TIDA-00525
TIDRDG3.PDF (136 K)

Detailed schematic diagram for design layout and components

download Bill of materials (BOM) — TIDA-00525
TIDRDG4.PDF (198 K)

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

download Assembly drawing — TIDA-00525
TIDRDG5.PDF (61 K)

Detailed overview of design layout for component placement

download CAD/CAE symbol — TIDA-00525
TIDRDG7.ZIP (150 K)

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

download Gerber file — TIDA-00525
TIDC973.ZIP (149 K)

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

download PCB layout — TIDA-00525
TIDRDG6.PDF (300 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Integrated control BLDC drivers

DRV10975 — 12-V nominal, 2-A peak sensorless sinusoidal control 3-phase BLDC motor driver

Data sheet: PDF | HTML

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Software

Technical documentation

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

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