Thursday, February 13, 2025

Reference Design For Low Voltage Ceiling Fan 

The design is specifically tailored to control a low-voltage, three-phase BLDC ceiling fan motor with a power output of up to 40 watts. 

reference design for low voltage fan by microchip

To minimize residential energy consumption, ceiling fans and other household fans are transitioning from large and heavy single-phase AC induction motors (ACIM) to smaller, lighter, and more efficient three-phase brushless DC (BLDC) or permanent magnet synchronous motors (PMSM) that offer higher power density. Microchip has launched a reference design for a low-voltage ceiling fan that provides a cost-effective and energy-efficient solution for a low-voltage PMSM fan. The design can operate a ceiling fan at 300 Revolutions Per Minute (RPM) while consuming approximately 17.5W of power, equivalent to the energy required by two Light-Emitting Diode (LED) bulbs that are approximately 60 Watt. This Reference Design controls a low-voltage, three-phase PMSM/BLDC ceiling fan motor. The board operates from the input AC power within the 90-265 VAC voltage range. The design can drive BLDC/PMSM motors with a power output of up to 40W. 

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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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