BLDC ceiling fan usage is increasing, and consumers expect manufacturers to provide various speed control methods - some with advanced mobile apps, some with standard IR remotes, or a more conventional wall mount regulator. This platform defines an integrated way of controlling the speed through all three means in a single design. This adds flexibility for the consumers and covers a wider mass market with a single approach reducing inventory and BOM costs.

System Benefits:

  • Multiple options to regulate speed, as dependency is reduced on devices
  • Adopts critical conduction mode for power factor >0.9
  • Wider operation range to run at single speed, lower motor losses due to high voltage winding
  • Can be adapted to any existing motor control design to support a variety of speed control solutions by sensing wider line operating parameters and providing speed commands to the motor controller
  • Closed loop speed control and error optimization to maintain speed




  • BLDC ceiling fan speed control
  • Backward compatibility with existing 4-step regulator

Winning Combinations Interactive Diagram

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4:3 ratio IR/NEC IR/NEC IR/NEC MOSFET MOSFET MOSFET Filter & Protection Filter & Protection Filter & Protection Sheet.1 Sheet.2 Sheet.3 Sheet.4 AS002 AS002 AS002 AC Power Source Sheet.8 Alternating Current Transformer Inductor Coreless (Air conductor) Sheet.11 Sheet.12 Sheet.13 Sheet.14 Sheet.15 Sheet.16 Sheet.17 Sheet.18 Sheet.19 Capacitor Non-polarized Sheet.21 Sheet.22 Sheet.23 Sheet.24 Capacitor Non-polarized .25 Sheet.26 Sheet.27 Sheet.28 Sheet.29 Bridge Rectifier Sheet.31 Sheet.32 Sheet.33 Sheet.34 Sheet.35 Sheet.36 Sheet.37 Sheet.38 Sheet.39 Sheet.40 Sheet.41 Sheet.42 Sheet.43 Sheet.44 Sheet.45 Sheet.46 Capacitor Non-polarized .47 Sheet.48 Sheet.49 Sheet.50 Sheet.51 Resistor - Fixed Resistor - Fixed.53 Resistor - Fixed.54 Motor Sheet.75 Sheet.76 M M Transformer Inductor Coreless (Air conductor).77 Sheet.78 Sheet.79 Sheet.80 Sheet.81 Sheet.82 Sheet.83 Sheet.84 Sheet.85 Sheet.86 Diode Sheet.88 Sheet.89 Sheet.90 Ground Sheet.92 Sheet.93 Ground (earth) Sheet.95 Sheet.96 Sheet.97 Sheet.98 Shunt Sheet.100 Sheet.101 Sheet.102 Capacitor Polarized Sheet.111 Sheet.112 Sheet.113 Sheet.114 Resistor - Fixed.115 Capacitor Non-polarized .116 Sheet.117 Sheet.118 Sheet.119 Sheet.120 Ground (earth).121 Sheet.122 Sheet.123 Sheet.124 Sheet.125 Wi-Fi Sheet.164 Sheet.165 Sheet.166 Sheet.167 Sheet.168 Sheet.169 Sheet.170 Sheet.171 Sheet.172 Sheet.173 Wi-Fi.174 Sheet.176 Cloud Redo Undo Sheet.257 Sheet.258 Sheet.259 Sheet.261 Sheet.262 Sheet.263 Sheet.264 Sheet.265 Sheet.266 Sheet.267 Sheet.268 Sheet.269 Sheet.270 Sheet.273 Sheet.274 Sheet.275 Sheet.276 Sheet.277 Sheet.278 Sheet.279 Sheet.280 Sheet.281 Sheet.282 Sheet.284 Sheet.285 Sheet.286 Sheet.287 Sheet.288 Sheet.289 Sheet.290 Sheet.291 Sheet.292 Sheet.293 Sheet.295 Sheet.296 Sheet.297 Sheet.298 Sheet.299 Sheet.300 Sheet.301 Sheet.302 Sheet.303 Sheet.304 Sheet.305 Sheet.306 Sheet.307 Sheet.308 Sheet.310 Sheet.311 Sheet.312 PFC PFC PFC Aux SMPS Aux SMPS Aux SMPS LDO LDO LDO Op Amp Op Amp Op Amp VSP VSP VSP 4 Step Regulator 4 Step Regulator 4 Step Regulator Sheet.332 Sheet.333 Sheet.334 Label Text 10pt.262.335 ~ ~ Label Text 10pt.336 ~ ~ Label Text 10pt.262.337 + + Label Text 10pt.262.338 - - Connector 1.177 Connector 1.177.364 Connector 1.177.365 Connector 1.177.366 Connector 1.177.367 Connector 1.177.369 12V 12V 12V Connector 1.177.371 Sheet.186 Sheet.187 Sheet.188 Sheet.189 Sheet.190 Sheet.191 Sheet.192 Sheet.193 Sheet.194 Sheet.195 Connector 1.177.372 Connector 1.177.373 RX13T Based Motor Control Solution 240V AC BLDC Motor Control 240V AC BLDC Motor Control 600V 600V 600V Sheet.379 Connector 1.177.380 Connector 1.177.381 BLDC Motor BLDC Motor BLDC Motor Speed Feedback Speed Feedback Speed Feedback Connector 1.177.387 Sheet.388 Sheet.389 Connector 1.177.390 3.3V 3.3V 3.3V 1 1 1 1 Sheet.394 1 1 1 1 Sheet.397 Current Sense Current Sense Current Sense Voltage Sense Voltage Sense Voltage Sense 3.3V/280mAmax 3.3V/280mAmax 3.3V/280mAmax Wi-Fi.198 Resistor Divider Resistor Divider Resistor Divider 3.3V 3.3V 3.3V 390V DC 390V DC 390V DC 2 2 2 2 Sheet.406 AC AC AC Bridge Rectifier Bridge Rectifier Bridge Rectifier IoT Enabled BLDC Ceiling Fan IoT Enabled BLDC Ceiling Fan IoT EnabledBLDC Ceiling Fan Sheet.411 Bluetooth Low Energy Wi-Fi Bluetooth Low Energy Wi-Fi Bluetooth Low Energy Wi-Fi VCC VCC VCC UART UART UART Sheet.412 MCU MCU MCU VCC VCC VCC GPIO GPIO GPIO PWM PWM PWM INT INT INT UART UART UART ADC ADC ADC Regulator Regulator Regulator
Exiting Interactive Block Diagram