Forward and reverse switching, stop brake, potentiometer (PWM) speed regulation, LED motor status indication, Motor protection: MOS power-on self-test, MOS over-temperature protection, stall protection, over-current protection, over-undervoltage protection. module is 78x57mm long and wide, the plate thickness is 1.6mm, the working voltage is 6-80V, and it supports anti-reverse connection protection, and the module not be damaged by reverse connection of the power cord. The module defaults to a bare board. If the motor driving the current below 5A does not need forced heat dissipation, it only needs to normal ventilation. If the driving current exceeds 5A, forced heat dissipation must be forced. The heat sink provided by our company can work continuously at 20A current. The onboard LED indicator is used for standby, working, error and other states. Onboard potentiometer (0.5~5V), PWM speed regulation interface (frequency 1~20KHz), duty cycle 10~100%. Onboard FG speed feedback interface, calculate speed RPM=FG frequency Hz * 60/pole pair number. Onboard CWICCW steering control interface, hanging for clockwise CW, shorting GND for counterclockwise CCW steering. Application areas: pumps, medical equipment, various compressors, various fans/blowers, electric screwdrivers, electric curtains, automatic doors, hydraulic oil pumps, air pumps, refrigerator DC brushless compressors, lawn mowers, sprayers, underwater thrusters, etc. SNR8503M is a 32-bit core MCU, which is very convenient for development and simulation debugging. In order to facilitate users to quickly realize the driving of sensorless BLDC motors, our company has completed the underlying software core algorithm. Users only need to carry out secondary development based on this software to quickly complete product development. Product name: SNR8503M Is it Hall: Milless Working voltage: 6-80V Control mode: PWM/serial port current: 50A Module specifications: 78x57mm Continuous output current: 20A Maximum output power: 1600W Other performance: overcurrent protection & stall protection & power reverse connection protection Open loop/closed loop: open loop by default This product is a driver module developed for sensorless BLDC motors. The main driver chip is SNR8503M. The chip integrates a dedicated circuit for sensorless motor driving. It has the characteristics of simple peripheral circuits, complete functions, small size, simple debugging, high driving efficiency, flexible application, and wide application. Motor drive bottom layer Inductive start bottom layer Back EMF commutation bottom layer Phase compensation algorithm Speed closed-loop PID algorithm Current-limited PID algorithm Downwind start algorithm Color: As Shown Material: PCB Package Contents: 1 * brushless Hallless motor control driver board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.