The MP6570 is a high-performance controller using a field-oriented-control (FOC) method and an accurate, on-chip, angular sensor. The MP6570 can be used in applications with 3-phase PMSM and BLDC motors. The FOC control is used to achieve high performances of motors and provides higher dynamic response, lower torque ripple, and higher efficiency. The MP6570 can be operated in position control, speed-control mode, or torque-control mode. The reference command comes from the digital interface input or external single-input signal either in clock or PWM input. The motor 3-phase current is sampled and digitalized to the current/torque control loop by a 10-bit ADC. With the FOC algorithm, the motor 3-phase winding voltage is modulated through the SVPWM module, which has up to 12-bit resolution at 40kHz switching frequency. The on-chip angular sensor uses MPS? high-speed and accuracy angular sensor for rotor position and speed feedback. It has up to 500kHz data refresh rate and 10-bit position resolution, ideal for BLDC and PMSM motor controls, especially in application (i.e.: high-speed control and high-position accuracy servo). The MP6570 has non-volatile memory, which is flexible for parameters programmed through a standard I2C interface. Additionally, all controls and designs with the MP6570 can be easily done with MPS? GUI software. The MP6570 has robust failure mode protection features including over-current protection (OCP), over-temperature protection (OTP), and input
MP6570 Field Oriented Controller with High Accuracy Angular Sensor
The MP6570 is a high-performance controller using a field-oriented-control (FOC) method and an accurate, on-chip, angular sensor.
Monolithic Power Systems (MPS)