According to the International Energy Agency's IEA survey, 45% of the world's electricity is consumed by motors. In China, the ratio is as high as 54%. This data shows how extensive the use of the motor is, and also illustrates the importance of developing and making efficient motors! In today's highly competitive and ever-changing environment, simply improving the efficiency of the motor has not adapted to the social trend. All motor control applications require people to constantly find new ways to improve energy efficiency, mobility and safety. In view of this, electronic enthusiasts invite Mr. Xin Benwei, the business development manager of Texas Instruments' analog products, to discuss the motor drive and control system. Mr. Xin Benwei, Business Development Manager, Texas Instruments Analog Products Open the motor market, efficient, safe, intelligent and stable is the key As a leading chip solution manufacturer for industrial control, Texas Instruments' motor drive products have always paid special attention to the safety and efficiency of motor drive and control systems, and have been working to improve the performance of control algorithms. First of all, in terms of efficiency, TI's products usually choose the optimal drive MOS. For small current motor drive products, TI usually integrates MOSFETs and optimizes RDSON, while also reducing the quiescent current to reduce the power consumption when the motor is not running. . In addition, Mr. Shinmoto said that in the industrial field, on-chip protection is the focus that TI has always emphasized. Like the DRV series of motor drive products, they all integrate complete on-chip protection mechanisms, including overcurrent, overheating, short circuit, undervoltage, etc., and first tried the so-called AnTI-Voltage Surge on the latest DC brushless drive products DRV10983 and DRV10975. The protection mechanism actively responds to the transient voltage overshoot caused by the motor itself during the operation of the motor. The motor drive products have also been specially designed for automotive applications. For example, how the load dump condition can increase the withstand voltage of the product under this condition without increasing the excessive cost. TI's extensive motor expertise, wide range of options, and comprehensive support enable highly reliable operation of different motors or different loads from a single chip and eliminates the need for customers to invest in excessive R&D resources. For example, the DRV10983 does not require the customer to write code to drive a sensorless DC brushless motor (controlling the sensorless DC brushless motor is very complicated), providing enough EEPROM for the user to configure for different motors for optimal results. Stepper motor is the "baby" of the motor family. Most stepper motors have problems such as zero-crossing distortion and inductance discharge distortion. In the opinion of Mr. Shinji, the biggest challenge is how to solve various problems at the same time without increasing. At a high cost, TI's latest DRV8846 and DRV8880 series products have adopted innovative adaptive current attenuation and subdivision algorithms to fully consider small current distortion. Mr. Shin-Ben also emphasized that TI's algorithms have always been dedicated to reducing noise, reducing vibration, improving the stability of motor operation, and maintaining competitiveness in the motor drive market. Four advantages of motor drive products and solutions As a global market leader, TI leverages extensive experience in advanced motor control expertise and combines analog and embedded processing product lines to provide complete motor system solutions. To sum up, TI motor drive products and solutions have four main advantages: 1. The product coverage is wide. The product can be used to drive DC brushed, brushless, stepper motors, as well as solutions for servo motors. In each subdivided motor type, there are also different solutions. For example, for the hottest BLDC, we have a sensible, non-inductive solution, as well as square wave control, sine wave control and more complex FOC. Different power motors can find the corresponding solution. 2, easy to use, can shorten the customer's research and development cycle. The DRV8 series brushed and stepper motor drives and the DRV10 series of brushless motor drive chips all integrate the control part inside the motor and have high performance. The customer can easily design the motor drive end and put more energy into it. Invested in the research and development of the system. 3. High reliability. TI's motor drive solution integrates protection mechanisms inside the chip and is highly reliable. At the same time, TI's algorithm is also dedicated to driving motors with different parameters, so that the same product can be used in end products with different application requirements without problems, simplifying the development cycle. 4. Complete products and support. TI's products are not just the chip itself, we also provide supporting evaluation kits, reference designs, application manuals, etc., for user convenience. When customers have problems, they can contact our FAE, but it is more convenient to log in directly to our E2E forum or to the Texas Instruments online support community. The motor drive experts will help customers solve technical problems directly on the forum. The motor is a very important part of the industrial field. It is also called a large power consumer. How to use the motor is always a problem that the industry attaches great importance to. Mr. Shin-Ben believes that the optimization of the algorithm is in fact focused on the optimization of efficiency, and has always been the industry leader in this field. TI's products usually choose the MOS of the optimal driver. For small current motor drive products TI usually integrates MOSFETs and optimizes RDSON, while also reducing the quiescent current to reduce the power consumption when the motor is not running.
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