Overview
This reference design describes a 3-phase brushless DC motor (BLDC) drive that uses the NXP® MC56F8006 Digital Signal Controller (DSC) for dedicated motor control devices.
- Closed-loop speed/current-controlled BLDC drive, with no need for position or speed sensors.
- Low-voltage power stages used by the application are designed for 24 VDC line voltage.
- A reference manual provides a detailed description of the application, including hardware and software design.
- Hardware schematics, PCB Gerber files and full software listings are also provided.
- Ideal for applications such as compressors, dishwasher pump drives, washing machines, fans and industrial motor control.
Features
- Sensorless control of BLDC
- Control technique incorporates:
- Speed closed-loop control with automatic current limitation
- Rotation in both directions
- Start from any motor position with rotor alignment
- 4-quadrant operation
- Multisampling method of back-EMF
- Wide speed range
- FreeMaster control interface
- Fault protection for overcurrent, overvoltage, overload and start-up fail
