45W AC DC Kit Remote Control BLDC Ceiling Fan Controller PCB

45W AC DC Kit Remote Control BLDC Ceiling Fan Controller PCB DESCRIPTION

A 45W AC/DC Remote Control BLDC Ceiling Fan Controller PCB is

an energy-efficient electronic circuit board kit used to upgrade or build a brushless DC (BLDC) motor ceiling fan. It allows a fan to operate from either a standard AC electrical supply or a low-voltage DC source, such as a solar panel or battery.

Key components and function

• AC-to-DC converter (SMPS): This part of the circuit converts the standard household AC current (e.g., 100-240V) into a stable, low-voltage DC supply (e.g., 12V or 24V). When both AC and DC sources are connected, the controller prioritizes the AC power to preserve battery charge.
• Microcontroller (MCU): The “brain” of the controller, this component processes commands from the remote control. It is often a high-quality IC chip from a company like ST, ensuring stable operation.
• Inverter and MOSFETs: The microcontroller sends signals to the inverter, which uses MOSFETs (Metal-Oxide-Semiconductor Field-Effect Transistors) to precisely control the current flow to the BLDC motor’s stator windings. This electronic commutation drives the fan’s rotation efficiently.
• Remote control: An infrared (IR) or radio frequency (RF) remote allows for convenient, wireless control of the fan.
• PCB board (FR-4): The components are mounted on a printed circuit board, typically made from high-quality fiberglass-reinforced epoxy resin (FR-4) for durability and heat resistance.

Operating features

• Dual power supply: The primary feature is its ability to switch between an AC grid supply and a DC power source, making it ideal for use with solar power setups or in regions with frequent power outages.
• High efficiency: BLDC motors are significantly more energy-efficient than traditional induction motors, consuming up to 65% less power. This translates to substantial savings on electricity bills.
• Remote control functions: The included remote provides multiple speed settings (typically 5 to 7), a timer function, and on/off control. More advanced kits may offer features like reverse blade rotation and LED light control.
• Whisper-quiet operation: The brushless design and electronic commutation eliminate the friction and humming noise common in standard AC fans, ensuring quiet operation.
• Inverter friendly: The low power consumption of the BLDC motor means it can run for much longer on a home inverter or battery backup.
• Wide voltage compatibility: The kit is designed to handle a broad range of input voltages, providing stable performance even with voltage fluctuations.
• Advanced control methods: The microcontroller can support multiple speed control methods, including Infrared (IR), Pulse Width Modulation (PWM), Voltage Speed Control (VSP), and Serial Peripheral Interface (SPI).

Protection and safety features

• Thermal and short-circuit safeguards: Built-in protection prevents damage from overheating or electrical faults.
• Over-current and phase-loss protection: The controller monitors the current and motor phase, shutting down if it detects an issue.
• Current limiting: A current limit of around 3.3A is often included to protect the circuit and motor.

45W AC DC Kit Remote Control BLDC Ceiling Fan Controller PCB