12V BLDC Server Fan with Sensorless Sinusoidal Control

2015-3-23 09:48:06 2533 BLDC

0 `描述 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. 特性 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. TIDA-00525 Test Results.pdf (517.57 KB, 下载次数: 3 ) TIDA-00525 Assembly Drawing.pdf (61.25 KB, 下载次数: 3 ) TIDA-00525 BOM.pdf (198.76 KB, 下载次数: 3 ) TIDA-00525 PCB.pdf (300 KB, 下载次数: 4 ) TIDA-00525 Schematic.pdf (136.19 KB, 下载次数: 6 ) tidrdg7.zip (150.11 KB, 下载次数: 2 ) tidc973.zip (149.81 KB, 下载次数: 2 ) ` 0
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