Mr. Chengbao Zhong, Director of Application Department of CMSemicon, recently delivered a speech on "Analysis of Domestic High-Performance Motor Control Solutions", sharing the full range of CMSemicon's high-performance mass production motor control SoCs that have covered multiple types of motor applications.

CMSemicon has launched a high-performance full series of motor-specific MCUs in accordance with the tendency of motor control application becoming more highly integrated, highly-efficient and lowly-noisy. The wide product line has covered the applications of permanent magnet synchronous motor, DC brushless motor, brush motor and stepper motor.

To accelerate customers’ development cycle and shorten time to market, CMSemicon also provides self-developed motor drive power devices and cost-effective and batch-proven solutions, supported by mature motor control algorithms.  What’s more, to improve motor control system development efficiency with simple and easy-to-use features, enabling users to match different motors easily and quickly.

Product Selection

Advantages of CMS32M57xx Series

- ARM Cortex-M0 core, 64MHz main frequency, 2.1V ~ 5.5V operating voltage, -40℃ ~ 105℃ operating temperature.

- Enhanced PWM pins with remapping function, arbitrary allocation of PWM port line in the face of any driver chip, with wave-by-wave current limit function which can achieve constant current control and more flexibility in the processing of motor overcurrent protection.

- Enhanced PWM has rich loading and interrupt modes, which can realize the application of higher carrier frequency.

- Enhanced PWM module supports asymmetric output, and any edge can trigger ADC conversion, easily realize single-resistance sampling.

- Bandwidth gain product height of op-amp up to 10MHz for easy handling of motor phase current signals; voltage swing up to 10V/us for timely response to abrupt overcurrent signals.

- 2 ADC modules, high-speed ADC for motor control signal acquisition and low-speed ADC for system control signal acquisition. The two modules can run in parallel without intervening with each other

- Timer interrupt can trigger low-speed ADC conversion, eliminating software cost.

- Strong anti-interference ability; EFT test index up to 4800V.

- Watchdog timer with independent clock source for readily achieving the IEC60730 certification requirements of the clock mutual correction function.

- Integrated high-precision on-chip temperature sensor to effectively protect the motor control system.