The YYK controller is a square wave high discharge high speed controller. Discharge current rates start from 50A all the way to 150A. And they can accommodate a variety of voltages from 48V to 72V or 100-120V. The YYK is a universal controller which is easy to wire up and to adapt to virtually any e-bike or e-scooter drive train.
Here is how the YYK square wave controller works:
Sinewave FOC Controller
Our sinewave FOC controllers are smoother and more efficient without sacrificing the torque and top speed of squarewave controllers. From launch, the sinewave foc controllers will feel more gradual and smooth whereas squarewave versions will feel more torquey and jerky. We have available the 50A and 80A versions of the sinewave controller.
48V-72v, max current 50A/80A/100A high powered brushless motor controller, voltage cutoff value is 42V, is suitable for 48v to 72v battery. Phase angle 120 degree. Install apps to your smart phone and use Bluetooth device available for setting the controller current, voltage, speed and other data.
50A Example Brushless DC Motor Controller
Controller Wave Type
Square Wave Controller / Sinewave FOC
Available Battery Voltage
48V, 60V, 72V
Available Motor Power
Phase Peak Current ( Few Seconds )
280 A ( The bigger, the higher torque )
50A, 80A, 100A Peak
Available Motor Type
Hub Motor, Mid Motor, Speed Motor
Available Motor Angle
60 / 120
Available Battery Type
Lithium Battery ; Acid Battery
Available Motor Type ( With Hall Sensor )
Hub Motor; Speed Differential Motor; Mid Drive Motor
Throttle; Potentiometer (Customized )
Number of MOSFETS
IRFB 4115 / 220
Siliver ( Color customization is available with mini order 200 pcs )
Available Working Temperature
-30℃ to 100℃ ( As per surface of controller )
Brake Signal Input
0-5V; 12V (Customized )
Electric mobility Scooter, Bike, Tricycle, Light Car
Usage 2 ( Most is sensorless )
Water Pump, Air Compressor; Fans, Refrigater
App Bluetooth Programmable Supports both of iPhone & Android
Specially designed for electric bicycle, scooter etc.
Intelligence with powerful microprocessor.
5V Sensor Supply Current: <30mA.
Standby Battery Current: < 0.5mA.
Hardware over Current Protection while Current over 100A – 110A.
Hardware over Voltage Protection while Voltage over 144V.
Configurable Fast Start 1-10 ,the bigger, the faster. This is higher priority than Soft Start.
Configurable Soft Start 1-10, the bigger the number, the softer.
Configurable Over Speed On / Off . Configurable Speed Ratio ( High Speed ) 105 % – 120%. Configurable Low Speed Ration 10% – 80 %. Middle Speed is 100 % as Default. It cannot be configurable.
Adjustable Forward / Reverse. It is easy for motor assembling.
Adjustable Manual Cruise. It is workable with a switch to connect manual cruise wires of controller.
Adjustable Auto Cruise. It will enter cruise mode when same speed is kept for 8 seconds.
Configurable Speed Limited 30% – 60 % of full speed.
Configurable Reverse Speed Limited 10 % – 100 %.
Configurable Speed Limited from 30% – 60 % of full speed.
Configurable EBS Brake ( Regenerative ) 1 -10. The higher number, the stronger. It will not be used while the battery voltage above 72V to protect controller from damage.
Configurable Battery Current Limited ( A ) 50 % – 100 % of max current. The more lower, the more weaker.
Configurable Phase Current Limited (A ) 50 % – 100 % of Peak Current. The more lower, the more weaker.
Adjustable of Hall Sensor Phase Angle – Option 60 degree / 120 degree.
Turn on / off ECO Mode, on this mode, one charger battery will be run longer.
Turn on / off Adj Accelerator Curve. It will be going to tremble. Please don’t use this feature for normal driver. It is for players only.
Turn on / off of Boost . It is to the off road.
Configurable Low Voltage Threshold ( Low voltage Protection ) 50V – 105V.
Turn On / Off Motor Lock. The motor will be locked if turn on it while the battery has power.
Turn On / Off Restore Factory Settings.
If you have any issues with the controller to motor connection, do follow these steps to configure your motor to your high speed controller especially if you experience the motor jerkiness or motor not moving.