MAX14690JEWX+T

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MAX14690JEWX+T is a variable power management and high power motor control application platform, which uses integrated motor control solution to overcome the limitation of available space to achieve advanced high-performance motor control. This application platform provides and supports several design needs, such as pre-charging, soft starting, field-oriented control and detection of shorts, overloads and over-temperature. When integrated with a host controller, it can provide an advanced solution for efficiency and flexibility.

Overview

The MAX14690JEWX+T is an integrated utility module with the field-oriented motor control (FOC) algorithm for three-phase motors. It includes low noise power MOSFET gate drivers and a complete set of protection features for short DC link, short motor phase, over-current and over-temperature operations. Also integrated are a digital core with 8-bit microcontroller, a 32-bit coprocessor and a range of power management circuitry, additional on-chip RAM and a SPI interface. With a maximum peak current of 8A, it is able to control high power three-phase motors. The motor drive voltage is programmable and can either be single-phase (±20V), or dual-phase (±10V). The three-phase motor control optimization and realization of MAX14690JEWX+T optimizes the process of current and voltage control.

Application Field and Working principle

The MAX14690JEWX+T is mainly used in industrial and consumer motor control, such as electric vehicle (EV) and hybrid electric vehicle (HEV) motor control, industrial electric drives and robotic motor control. It also provides motor control solutions for motorized ride-on toys, as well as ATV, lawnmower and snowblower motor control applications.

The motor control works by using the information received from the motor encoders to compute the current vector and do the vector control, in order to obtain the desired speed. The vector control methodology is a process in which the control of the motor is done without the need for a speed sensor. The vector control algorithm works on the principle of torque and voltage control. The torque is calculated from the measured current, and then is compared to the torque reference command. The voltage that is required to produce the desired torque is then determined. The system also monitors the speed of the motor in order to avoid current over-flows and reach the desired speed. The motor is controlled by a synchronous vector control algorithm, which adjusts the current vector instead of the actual power used by the motor. The vector control algorithm processes the electrical signals generated by the motor encoders, or tachometers, to obtain the estimated speed, current and torque of the motor.

Benefits

The MAX14690JEWX+T platform is designed to provide an optimized solution for higher power three-phase motor control applications. It integrates high-performance protection circuitry that effectively avoids the common threats and ensures the reliability of the motor operation. Its ability to work with either single-phase or dual-phase motor drive voltage enables flexibility while still providing an efficient motor control solution. The microcontroller core and its powerful coprocessor enable advanced algorithms and make the MAX14690JEWX+T suitable for highly integrated system solutions.

Conclusion

The MAX14690JEWX+T is an efficient and reliable solution for three-phase motor control applications, offering high performance and protection against common problems in motor operating conditions. With its flexible power management and motor control modules, it is suitable for both consumer and industrial applications. The microcontroller core and coprocessor powered by the advanced vector control algorithm enable greater flexibility and optimization of design. As a result, the MAX14690JEWX+T provides a complete motor control solution for high power motor control applications.

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