Friday, May 16, 2025

Reference Design For BLDC Fan Controller With Current Control

The Brushless DC (BLDC) ceiling fan controller with sensorless sinusoidal current control design runs from AC power and can convert 90-265 VAC into 24 VDC.

TIDA00386

In the ceiling fan segment, single-phase induction motors have traditionally dominated due to their ability to run directly from commonly available power sources in homes/offices. However, these motors are known for their high power consumption and relatively low efficiency, typically operating at around 30-40% efficiency. Moreover, the speed control mechanism, which involves voltage regulation, introduces additional losses to the system and makes it challenging to maintain a constant speed due to fluctuations in input voltage. To solve this problem Texas Instruments (TI) has launched a Brushless DC (BLDC) ceiling fan controller with sensorless sinusoidal current control TIDA00386 reference design. The design runs from AC power and can convert 90-265 VAC into 24 VDC. The reference design offers a comprehensive solution for ceiling fan applications utilising a 3-phase Brushless DC (BLDC) motor. The design is best suited for various industrial applications such as dental chairs, operation power conditioning, Electrosurgery system, etc. 

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Nidhi Agarwal
Nidhi Agarwal
Nidhi Agarwal is a Senior Technology Journalist at EFY with a deep interest in embedded systems, development boards and IoT cloud solutions.

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