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.
- 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.
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
Design files & products
Download ready-to-use system files to speed your design process.
Test results for the reference design, including efficiency graphs, test prerequisites and more
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
|Test report||TIDA-00525 Test Results||Mar. 17, 2015|
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