MP6570 3-Phase BLDC Controller QFN-32

MP6570 3-Phase BLDC Controller QFN-32

The MP6570 is a high-performance motor controller that incorporates field-oriented control (FOC) algorithms, SVPWM modulation technology, and an accurate embedded angle sensor.

Key Specifications

Features

• 3.3V Operating Supply Voltage
• Flexible Parameter Configuration with Non- Volatile Memory and Selectable SPI/I2C/RS485 Interface
• Embedded Accurate Angular Sensor with Up to 14-Bit Resolution
• Field-Oriented Control (FOC) Method
• Position/Speed/Torque Operation Modes
• PWM/Clock/Digital Interface Reference Input
• Energy Regeneration Braking Mode
• 10-Bit ADC with Programmble Gain
• Up to 80kHz Programmble Switching Frequency
• A/B/Z Output with Internal Sensor Mode

Design Notes

• Set dead time to match the external FET turn-off, not the datasheet typical. Too little risks shoot-through, too much distorts the current waveform at low duty cycle.
• Use a Kelvin connection for the current-sense resistor; shared copper injects switching noise straight into the sense amplifier.
• The thermal pad is the only heat path for most packages — via-stitch it to a ground plane with at least 9 vias.
• PWM frequency trades switching loss against current ripple in the motor inductance; 20 kHz keeps the drive out of the audible band.
• Add a brake or coast path so regeneration during a fast stop does not pump the supply rail.

Common Questions