Smart BLDC Ceiling Fan
Renesas’ smart ceiling fan solution features dual rotation, natural breeze, LED lighting, and a temperature and humidity sensor
Renesas’ winning combination reference design for a smart BLDC ceiling fan provides a high efficiency, high torque, low noise, and smooth start solution. Efficiency is key for this application; thus, built-in self-align dead time with chip design technology offers reduced thermal and power losses.
In this design, a microcontroller (MCU) plus pre-driver in a single chip reduces component count and board size. A proprietary sensorless algorithm reduces dependency on external components.
This smart solution consists of core ceiling fan functions like dual rotation, natural breeze, LED lighting, and a temperature and humidity sensor with IoT features supporting wireless protocol (Wi-Fi) for control using the Android OS for smart devices.
Features
- Rotor position sensing technology, magnetic rotor position identification (MRI) for low-speed rotation, vibration-free during initial start-up
- Uses RL78 MCU (RL78/G1F) core (16-bit CISC, 44 DMIPS at 32 MHz)
- Flash ROM: 64 KB (data Flash: 4 KB), RAM: 5.5 KB
- Device supports field-oriented control (FOC) and 150° commutation
- VirtualZero™ technology offers very low power and secure Wi-Fi modules
- Energy saving using a self-align dead time generator
- Integrated hardware and firmware protection features:
- Temperature abnormality
- Motor rotation abnormality
- FET overcurrent
- Abnormal voltage
- High power factor (PF), constant voltage isolated flyback AC/DC, and high efficiency
- ISL85415 buck regulator
- Wide VIN 500 mA synchronous buck regulator
- HS3001 humidity sensor
- Relative humidity and temperature sensor
- RAJ306001 motor control
- 30 V motor control IC with built-in 16-bit MCU (RL78/G1F)
- iW3627 PWM controller
- Digital constant-voltage offline PWM controller with PF correction for applications up to 90 W
- DA16200 Wi-Fi system on chip (SoC)
- Ultra-low-power Wi-Fi SoC for battery-powered IoT devices
Applications
- IoT/smart homes
ISL85415 Buck Regulator
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
 |  | ISL85415FRZ-T7A | IC REG BUCK ADJ 500MA 12DFN | 0 - Immediate | $3.54 | View Details |
HS3001 Humidity Sensor
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
|  | HS3001 | SENSOR HUMIDITY 90% RH SMD | 0 - Immediate | View Details for Pricing | View Details |
RAJ306001 Motor Control
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
|  | RAJ306001GNP#AAN | MSIG MOTOR DRIVER FOR BLDC | 0 - Immediate | View Details for Pricing | View Details |
iW3627 PWM Controller
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
|  | IW3627-00 | IC LED DRIVER OFFL SOT23-6 | 0 - Immediate | View Details for Pricing | View Details |
DA16200 Wi-Fi System on Chip (SoC)
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
|  | DA16200MOD-AAE4WA32 | RF TXRX MODULE WIFI U.FL SMD | 0 - Immediate | $13.65 | View Details |
Published: 2021-09-29
