Mains powered, 24V, 30W BLDC motor driver with efficient, high power factor power supply

To meet energy efficiency requirements, ceiling fans and ventilation fans will move from simple AC induction motors to brushless DC motors (BLDC). BLDC motors require AC-DC conversion with high efficiency and high power factor when operating on AC power. It also requires the use of highly efficient controlled inverters for low-noise operation. Reference design TIDA-00652 uses a single-stage power supply to convert an AC power input to a low-voltage DC output, helping meet the challenges of higher efficiency and power factor in a simpler way. It also incorporates a fully integrated and properly protected single-chip sensorless sinusoidal brushless motor controller for low-noise operation.

characteristic

• ● Converts 230 VAC to 24 VDC using a high-efficiency single power stage
• ● Using buck PFC topology, it can achieve high input power factor (>0.94) and high efficiency (>91%)
• ● Universal input capability (50/60 Hz, 90-265 VAC) with minimal efficiency differences
• ● Starts up and runs at full speed even with 90 VAC input
• ● Highly integrated and properly protected single-chip sinusoidal brushless motor controller reduces external component count and helps avoid motor control programming overhead
• ● Infrared remote speed control