... over-voltage and under-voltage protection for high-side and low-side driver supply, gate-source voltage limitation of high ... Supply voltage range, No noise, hall-free, power,etc.Applications: External rotor motor, centrifugal fan, centrifugal blower, axial fan in HVAC,Tele-communication, ... dc motor, EC motor, energy saving motor,etc. Low noise 48V BLDC Fan motor driver or controller with tach output